Ask HN: Freelancer? Seeking freelancer? (July 2025)
45 whoishiring 62 7/1/2025, 3:01:36 PM
Please lead with either SEEKING WORK or SEEKING FREELANCER,
your location, and whether remote work is a possibility.
Please only post if you are personally looking to hire a freelancer or work as one. Agencies, recruiters, job boards, and so on, are off topic here.
Willing to relocate: No
Location: Los Angeles, California
Website: https://jonathanlahijani.com/
Email: (myusername)@gmail.com
I'm a contract (1099) full-stack web application developer with over 20 years experience and work with many medium-sized companies. My latest project is a custom order and production management system for a print-on-demand company in Los Angeles which took over a year to build (it's extremely complex). It handles thousands of orders per day across multiple factories and used by hundreds of employees and manages over 100 different product types each with unique graphical requirements.
I work mainly with PHP/MariaDB/Laravel/ProcessWire and I am experienced in all areas of development including developing REST APIs, system administration and much more.
Remote: Yes
Willing to relocate: No
Technologies: JavaScript, React, Next.js, Node.js, PHP, WordPress, Tailwind CSS, Hugo, SQL, APIs, AWS, GCP, Vercel, Netlify, CDNs, Shopify, iOS, Swift, Progressive Web Apps
Résumé: https://hire.scottmakes.tech/resume
Portfolio: https://hire.scottmakes.tech/portfolio
Email: scottmakestech+hn@gmail.com
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Full-stack developer with 18+ years of experience building websites and applications across industries including media, finance, and e-commerce. I work across the full stack to create fast, accessible, and scalable solutions. Comfortable owning the entire development lifecycle—from architecture and infrastructure to UI/UX and performance optimization. Deep experience with custom CMS solutions, serverless architectures, and integrations with complex APIs.
I'm Phil and I have a PhD in computer engineering, specializing in operations research (mathematical optimization, constraint programming, mixed-integer programming, etc). For the past several years I've implemented custom, production-ready solutions for a variety of problems (scheduling, routing, etc). Recent work includes a constraint programming solution for goal-based selection of indexes in Postgres, a heuristics-based scheduling tool used in hundreds of vehicle workshops around the world, and an optimization model used for scheduling autoclave cycles in a drug manufacturing facility.
Résumé/CV: https://github.com/PhilippeOlivier/curriculum-vitae/blob/mai...
Website: https://www.pedtsr.ca
Willing to relocate: Yes
Hi I’m Mark, a Web Developer, Consultant and Automation Engineer originally from the UK. I specialise in devops/system tools, workflow automation integrations, and NodeJS web development.
10+ years working in IT, experienced delivering large projects for Fortune 500 companies internationally, and working remotely.
Most recently I’ve been developing social media SaaS and statically generated (a.k.a Jamstack) websites, built using GitHub actions, deployed to Netlify, as well as OAuth 2.0 authenticated REST APIs.
Technologies:
NodeJS, Perl, Python, Bash, Git, Express, Mocha, HTML/Javascript/CSS, ES2015-2020, OAuth 2.0, JQuery, Bootstrap, AWS, Digital Ocean, Netlify, Heroku, Docker, Lambda, Serverless, Message Queues, Stripe, Mailgun, Linux, Postgres, MongoDB, Redis, Nginx, Letsencrypt, GitHub Actions
About me: https://markjgsmith.com/about
Portfolio: https://markjgsmith.com/portfolio
Recommendations: https://markjgsmith.com/recommendations
Résumé/CV: On request via email
Email: markjgsmith@gmail.com
Full-stack web, software and game developer, specializing in high-performance, minimal-dependency solutions. Available as an individual contributor, lead developer, or consultant. Passion for simple, efficient code and pushing web technologies to their limits. Can mentor teams or bring expertise to complex projects.
Proven track record of building multi-million dollar websites from scratch to production.
Expert-level HTMX, C, Zig, Odin, WebAssembly, vanilla C/HTML/JS/CSS, PHP.
Proficient in Laravel and game dev frameworks.
Also experienced in technical streaming, community engagement, and mentoring developers on modern dev practices.
Specialties:
High-performance web development with HTMX and vanilla JS
WebAssembly and C/Zig/Odin for game and web projects
Offline mode implementation for web apps
Indie game development
Performance optimization and legacy code refactoring
API design and integration
Technical mentoring and team alignment
Resume & Contact - https://spirofloropoulos.com | spiro(at)spirofloropoulos.com
Full-stack web developer, specializing in engineering a solid User Experience. Available as an individual contributor, team lead, or fractional CTO. No ego. Can bring my own offshore team if necessary.
Track record of taking projects from 0 -> MVP -> PMF.
Expert-level Ruby, JavaScript, PHP. Confident with Python too.
Also a certified Lego Serious Play facilitator and can help your team find their strengths and align on strategic goals.
Specialties:
GitHub: https://github.com/geetotesLinkedIn: https://www.linkedin.com/in/leegillentine/
Contact: lee(at)fishburd.com
I've been working on production-grade AWS deployments for over 10 years, so it's a bit hard to frame my experience/skill set. That being said, if you need help with almost anything AWS - architecture, infrastructure, performance, scale - feel free to reach out. Although versed in Well-Architected/multi-region/multi-account, I strive to supply the simplest solution for your particular scenario.
Keywords: IAM, VPC, Cloudwatch, EC2/ASG/ELB, Lambda, API Gateway, RDS, Redshift, DynamoDB, CodeDeploy, Cognito, Athena, S3, Cloudfront, Kinesis, SQS, SNS, IoT Core, Sagemaker, ElastiCache, MediaConvert
$150 USD/hour, minimum 50 hours (rates are standard and listed on my website)
hn@cldcntrl.com
While I'm familiar with various technologies, my passion lies in programming with Rust. Whether it's backend development, blockchain, compilers, DevOps, embedded systems or mobile applications, I am totally onboard as long as there is a little bit of Rust involved.
For more information, take a look at my CV (https://c410-f3r.github.io/curriculum.pdf) or my GitHub account (https://github.com/c410-f3r).
Biotech/Bioinformatics Software Engineer | 7+ years experience
I'm a software engineer currently at Gencove (biotech) with deep expertise in bioinformatics and genomics software development. I help biotech companies build robust, scalable solutions from MVP to production.
What I bring: Domain expertise in genomics pipelines, bioinformatics workflows, and biotech-specific challenges. Full-stack development with Python (primary), Go, Rust, React/Next.js. Available as fractional CTO or founding engineer for early-stage biotech startups. Highly self-motivated with extensive remote work experience.
Ideal for: Biotech/bioinformatics/genomics companies needing technical expertise, developer tools and infrastructure projects, early-stage startups requiring foundational technical leadership, and short to mid-term consulting engagements.
Open source: Notable project at https://github.com/mliezun/caddy-snake
Blog: https://mliezun.com
Contact: https://linkedin.com/in/mliezun
Available for immediate engagement. Happy to discuss how I can help accelerate your biotech project.
Before that, at Ruckit, I was part of the founding team where we developed a collaborative logistics platform that scaled the company to over $2M in monthly revenue. I managed a distributed team of engineers, drove third-party integrations, and helped position the company for acquisition by Command Alkon.
Now it's time for something new. You can checkout my CV/resume linked above for lots more details, and please reach out with any interesting opportunities.
LinkedIn: https://linkedin.com/in/sebastianlauwers
Technologies & Skills: Backend software development, architecture, cloud architecture, VPC design, Rust, Python, Pandas, Polars, Big Data pipelines, SQL, AWS, Postgres, Airflow, REST APIs.
I have a significant amount of experience as a tech lead, team lead, VPoE, and CTO. I can easily integrate in teams, I can build teams, I can mentor juniors. I work well in both enterprise and startup environments, and anything in between.
15+ years of experience in pharma, security, database, telephony industries.
Location: Germany
Remote: Yes
Willing to relocate: No
Languages: English, German
Technologies: Python, Natural Language Processing (NLP), Search Engines, Machine Learning (ML), Finance, Law, Perl, Lua, Linux, LLM, RAG, scientific Py (numpy, scipy, pandas, matplotlib, scikit-learn), QGIS & geographical Py, nltk, vector search, elasticsearch, apache solr, lucene, quickwit tantivy, PostgreSQL, clickhouse, mongodb, redshift, AWS, Azure, docker, git
Web: https://richard.bergmair.eu/
Email: richard.bergmair@urefpa25.onmicrosoft.com
Hours: CET (European), US East, Indian
Ph.D. in NLP from the University of Cambridge; recently: course on LLMs from MIT's AI & ML Certificate
13 years of freelancing in long-term remote gigs
~ 10 years of that was heavy on Data Science & ML (Goldman Sachs, Telefónica Germany, Flowminder Foundation, ...)
~ 7 years of that was heavy on Search Engines & NLP (DuckDuckGo, JUJU a.k.a. job-search-engine.com, ...)
some special interests: privacy & data protection (TÜV-certified), legal tech, law & compliance, finance, bookkeeping
I'm experimenting with a new model for CS education using advisors who follow and adapt to students' interests. The core idea is that students should learn how to learn early and to self-direct their own education. However, they need support for when they get stuck.
At the moment, I'm looking to work with students who have deep interests in CS/tech, but want something more dynamic than a fixed curriculum program.
Experience: * Self-taught programmer. * Worked on data engineering at a large hospital. * Ex-VC - worked on technology due-diligence. * Started independent R&D lab (www.ithron.com). * Designed this model based on my experiences hiring engineers.
Engagement model: * Work with students 1 on 1 * ideal age range is 16-21, * 2-3 hours of meetings per week + 15-20 hours of self-directed time * 3 month batches, can be extended to a full-year. * More info at: https://www.divepod.to
Feel free to reach out at: frank [at] divepod [dot] to
Technical Writing / Copywriting
Remote: Remote Preferred
Skills and Technologies: Technical Content Creation, Copyediting, Shell Scripting, JavaScript, Python, Docs-as-Code, Markup Languages, Content Management, Static Site Generators, HTML/CSS, SQLite, Git
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Hello, I am a technical writer and copywriter seeking project based freelance work. I have over 14+ years of experience crafting copy for technical documentation, social media, events, end-user training guides, newsletters, product marketing, and web/mobile apps. I would love to help you edit AI-generated content, write blog posts, update your docs, create release notes and changelogs, or promote new features for your app, product, or service. Writing samples available upon request.
Résumé/CV: https://linkedin.com/in/alvin-charity
GitHub: https://github.com/unforswearing
Major Incident: Take Command before your IT hits the fan.
Hi, I’m Vincent — a one-man consultancy for service managers who need a second brain, a sounding board, or someone who’s seen worse.
With over a decade of hands-on experience in IT and Logistics operations, service quality, and process improvement, I help teams under pressure make sense of what’s actually happening, and what to do next.
Common reasons clients call me in: – Support is overwhelmed and nothing’s improving – Tooling, processes and roles are unclear, but nobody has time to fix it – Team leads or Service Managers are stuck and need a sparring partner – Leadership wants answers, and all you have is noise
This is call-a-friend consulting. Tactical. Direct. Remote-first.
https://www.major-incident.com for more, or email vincent@major-incident.com to talk.
I'm a computer engineer with hands-on experience in embedded systems, cloud infrastructure, and full-stack web development. Most recently, I co-founded a pharma-tech startup, where I led the development of real-time data infrastructure, visualization and analytics on a regulated cloud platform.
Selected projects:
- Autonomous drone delivery systems for last-mile food logistics
- BMC firmware for enterprise storage deployed across major data centers worldwide
- Robotics firmware powering large-scale warehouse automation
- Managed Kubernetes PaaS for automated, multi-tenant application deployment
I also help startups go from zero to launch in a week - taking rough ideas and turning them into clean, performant, production-ready tools.
If you have a project or challenge that matches, feel free to reach out - I’m happy to discuss how I can help.
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Technology:
TypeScript, JavaScript, React, Next.js, WebGPU, WebGL, Python, C/C++, Linux, AWS, Docker, PostgreSQL, MongoDB, Kubernetes, IoT, CI/CD, Eagle, Altium, SolidWorks, Fusion360, OnShape
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Portfolio: https://www.bartekbaran.com
GitHub: https://www.github.com/BBato
CV: https://www.bartekbaran.com/cv.pdf
Email: contact@bartekbaran.com
I’m a technical writer focused on internal documentation and outreach content for AI startups. I’ve produced in-depth material for tools and workflows involving ML, often incorporating video and multimedia when appropriate. I also curate and train datasets in a variety of model categories.
Past clients include Metaphysic.ai, Unite.ai, and Bucharest-based startups. Comfortable working with developers and adapting quickly to evolving systems.
Portfolio: https://martinanderson.ai LinkedIn: https://www.linkedin.com/in/martin-anderson-ai-writer/ Email: martin@martinanderson.ai
Full-stack engineer with 25 years of experience (7 years remote) will ship your MVP, take your product to the next level, optimize performance or costs, or consult you on software engineering problems.
Front-end: TypeScript, JavaScript, React, Vue.js, CSS, SPAs, traditional web apps.
Back-end: Django, Python, Rails, Ruby, Spring Boot, Java, Scala, Node.js, SQL, microservices, monoliths, REST APIs.
DevOps: Google Cloud, AWS, Heroku, Terraform, CI/CD.
Strong communication skills, including talking to non-technical people, project management, fluent English/German/Hungarian.
Available 10-30 hours/week.
Portfolio, detailed skills: https://salomvary.com
Contact: top.gift2091@salomvary.com
We are a small remote full-stack design and dev team specializing in healthcare apps. Our portfolio: https://vitalsphere.digital. Some recent projects we've worked on: https://pathways.org/mobile-app, https://axiosint.com/digitalsolutions, https://popset.xyz, https://www.signupmedia.com, https://emulatebio.com, https://conveyour.com, https://www.webvideocaster.com, https://ways2well.com.
Some of the technologies we're most familiar with: Web and mobile design, UI, UX, iconography, illustration, design prototyping, PHP, Node.js, Meteor, Python, Ruby, JavaScript, HTML, CSS, Sass, LESS, Stylus, CoffeeScript, WebSockets, AJAX, MongoDB, Redis, MySQL, Cordova, PhoneGap, React Native, iOS, Android, Browser extensions (Chrome, Firefox, Safari), AWS, WordPress, Joomla, Drupal, C, C++, C#, Java, Objective-C, Swift, pharmacy systems such as QS/1, HL7, HIPAA, Smart Contracts, Motoko, Web3.
We offer hourly rates and discounted monthly retainer options. Contact: via our website or you can contact me directly at eliyah@vitalsphere.digital.
Location: Montana, USA
Remote: Yes
Email: jordan@jordanschatz.com
Website: jordanschatz.com
15+ years of experience, startups, CTO for mid-sized company, consultant for fortune 500s.
I do DevOps and high performance compute consulting. If for example you want to:
- Reduce your AWS bill
- Implement a disaster recovery plan
- Setup multi-node Postgres with point in time recovery
- Overcome a scaling issue
Then hit me up!
Portfolio: https://angeliqueboudeau.org/#portfolio
Contact: hi@angeliqueboudeau.org
I’m a web & print designer who helps organisations involved in social and environmental causes. I’ve helped clients in the past with projects focused on thermal solar energy, household waste reduction, plant-based food advocacy and data science for social/environmental issues. My design process aims to understand your needs and challenges and create designs aligned with your goals and values.
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Design services:
· Web design: responsive mobile/desktop designs that are lightweight and fast, where I can also arrange web development
· UI design: wireframes, mockups, clickable prototypes
· Print design: posters, flyers and business cards, with prints optimised for reduced ink and material usage
· Branding: logo design, style guides, posters, booklets, slideshows and social media banners
· Included in all services: advice on sustainability, accessibility (WCAG), content/copy, and SEO
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Skills: Figma, FigJam, Canva, Inkscape, GIMP, Scribus. Basics of Git, HTML, CSS, Linux, Visual Studio Code, Hugo, static websites. Fluent in French and English.
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Contact me via https://angeliqueboudeau.org or hi@angeliqueboudeau.org with a short description of your project, and how you think I can help, then we can arrange a call to discuss next steps!
Built production LLM pipelines and apps: RAG, embeddings, OpenAI APIs; for fintechs, edtech, e-comm
Extensive backend/API and frontend experience – clean, secure, well-documented services; component libraries and user-centric UIs
Worked closely with founders at multiple startups from zero to launch
Ex-Lead Dev @ CredCore (fintech) | EU time (CET)
LinkedIn: https://linkedin.com/in/daveclayton78
Email: davedx@gmail.com
ABOUT ME Full-stack engineer with 9+ years of experience shipping production software and leading technical teams. I specialize in turning complex ideas into real-world products, especially at the intersection of emerging technology and pragmatic business needs.
My background spans startups, established products, and research. I've contributed to DARPA and NASA-affiliated research and helped launch multiple B2B/B2C/B2G products. My technical work is grounded by a business foundation (Finance B.S.) and strong product intuition.
I’m currently looking for freelance or contract roles where I can:
- Build MVPs or iterate on high-growth products
- Lead architecture and implementation from 0→1
- Join agile teams pushing the frontier in AI, biotech, data, or web3
- Consult on strategy + technical execution for emerging tech businesses
RECENT FOCUS
- LLM applications (chatbots, agent workflows, embeddings, prompt engineering)
- Blockchain tooling (Ethereum, Foundry, Viem, building protocols)
- Custom data dashboards & visualizations (GraphQL, D3, SQL)
- Real-time systems, graph databases, and event-driven architectures, general "big data" stuff
- Security-conscious engineering: OSINT, encryption, privacy tools
KEY SKILLS React, Next.js, Vue, TypeScript, Python, Java, GraphQL, Node, SQL, Linux, Rust (learning), Solidity, Viem, Foundry, Cryptography, Prompt engineering
CONTACT GitHub: github.com/wkyleg Email: wkyleg_eth [at] pm [dot] me ENS: wkyleg CV & LinkedIn: available upon request
ABOUT: Experienced full-stack Software Engineer in React.js / Next.js / TypeScript / Node.js / GraphQL / C# / AWS / MongoDB / PostgreSQL / Cyber Security. Worked in different roles dealing with Product Development, Solution & Enterprise Architecture, Security & Cloud
Email: jainrasik [at] gmail.comResume/CV: https://www.rasikjain.com/resume/
LinkedIn: https://www.linkedin.com/in/rasikjain/
Github: https://github.com/rasikjain
Stackoverflow: https://stackoverflow.com/users/1993944/rasik-jain
Remote: Yes
Willing to relocate: No
Product Leadership: Scaling SaaS startups → PE exit, 100+ remote teams
AI/Innovation: OpenAI, RAG, LangChain, NLP/LLM pipelines, distributed systems
Technical: TypeScript, Node, Python, React/Vue, AWS/Azure, SQL/NoSQL
Résumé/CV: https://www.linkedin.com/in/jeff-borden/
Email: jborden13 [@t] gmail [dot] com
Built and sold a B2B SaaS company serving Fortune 500 brands with e-commerce intelligence and compliance. Now seeking to lead product/innovation teams solving complex problems at the intersection of data, AI, and scalable systems.
* Open to fractional, advisory, or full-time roles.
LinkedIn: https://www.linkedin.com/in/eugen-geist/
Technologies & Skills: Software Engineering, Requirements Engineering, Data Modelling & Pipeline Design, Python, Golang, SQL, AWS, Azure, Kafka, DuckDB, Postgres, Airflow, PySpark, Clickhouse, API design (full list on request)
Experienced Engineer looking for Software / Data Engineering contracts.
I support you through all phases of the software development lifecycle - from planning and requirements engineering through development and testing until go live and maintenance.
8+ years experience in different industries (HFT, automotive, logistics, internet telecommunication technology, energy) helping customers to solve their problems.
As a seasoned software and data engineering expert, my extensive experience lies in developing and connecting software to various trading exchanges worldwide in different domains (inter alia XETRA, LSE, TSX, ASX, Binance, EPEX, Reuters,..).
My latest projects have been in full-stack Edge R&D for SLaM, memory controller firmware dev for POWER servers, and chip bringup/testing for Z mainframes.
I'm passionate about modular synthesis and tinkering with all sorts of analog circuits and DSP. Currently upskilling in analog PCB design and refining my abilities in FPGA development.
Services I offer: custom firmware implementation, hardware/software integration, full-stack edge AI architecture.
Feel free to reach out directly at dm@datameta.info
I’m a full-stack engineer with 10+ years of experience building scalable apps and shipping products end-to-end for startups and Fortune 500s (healthtech, pharma, SaaS). I specialize in React, TypeScript, Node.js, AWS.
Recently led engineering on MapLab (Komodo Health), a patient data analytics platform.
I also:
- Speak English & French, and communicate well with product/design - Won AI & crypto hackathons (Solana, Filecoin, ETHGlobal) - Contributed to Salesforce’s React Native SDK (TypeScript migration)
Tech: React, Next.js, Node.js, GraphQL, Terraform, Docker, AWS, GitHub Actions, Salesforce, ChatGPT, HuggingFace
- hn@jpmonette.net
Location: Vancouver, WA
Remote: Yes
Willing to relocate: Open to discussion
Technologies: Javascript, Typescript, Web Developer-centric things
Résumé/CV: https://drive.google.com/file/d/165fbWB_769XWZjFQTbDu6tenP2W...
Email: nathankerr@gmail.com
Web developer for over 10 years with an emphasis on leading front-end development using React, Typescript, etc.
Very quick learner and have interest in most computer things.
Particularly love solving complex problems using simple solutions.
Authorized to work in US without sponsorship.
Technologies: Go (Golang), TypeScript/JavaScript, PostgreSQL, AWS, Terraform, Docker
8+ years of experience in software development. I have worked on a variety of projects, from small startups to large enterprises.
LinkedIn: https://www.linkedin.com/in/radu-lucut/
GitHub: https://github.com/radulucut
Email: mail[at]radulucut.com
I help startups implement secure API architectures through audits, strategy development, or ongoing support. As a solo consultant with 10 years of experience across startups to enterprise, you work directly with me (no junior handoffs). My goal is to enable your team to develop secure APIs independently, not create long-term dependency.
My website has more info: https://www.soeren.codes/
You'll find additional contact info there as well - feel free to reach out!
LinkedIn: https://www.linkedin.com/in/ogarten
Website: https://orellgarten.com
Technologies & Skills: Software Engineering, Data Engineering, Data Modelling & Pipeline Design, Python, FastAPI, SQL, AWS, Azure, DuckDB, API design (full list on request)
Experienced Engineer looking for software / data engineering contracts to solve business problems.
I usually work on the entire data chain from data generation up to BI or ML use cases at the end. Main focus is data from your business operations (logs, sensor data, process data, ...).
More than 7 years of experience in various industries (Aviation, Automotive, AdTech, ...) where I have helped my clients successfully tackle their challenges.
- Vanilla JS/HTML/CSS - Flutter/Dart - Monkey C (Garmin) - Hugo/Go - PHP, SQL - Python - WordPress + Plugins - Image/audio/video editing
CV: mm-dev.rocks/mm-dev-cv.pdf
Email: In CV
I'm Mark, I've over 15 years industry experience working with startups, household names, solo entrepreneurs. I live semi off-grid in my touring caravan, currently in South Wales. I've been working on my own open source projects for a while and want to get back amongst it.
Non-code skills:
- Communication: translate ideas from inside your head into a buildable plan
- Manage expectations, understand priorities, keep you in the loop
- I'm a generalist from art/design origins
Linux/Windows/Android/MacOS/iOS.
Interested in repairability and getting the most out of cheaper, lower-powered devices.
Seeking:
- Short-term, full-time projects - Longer part-time commitments (eg 1-2 days a week, few hours a month, retainer) - Agency overspill - Open to other ideas!
PERL Expert | DevOps Engineer | SQL/SOLR Specialist
Language: English, German
Areas of expertise:
Other notables experiences: WEB: https://perlexpert.de/en/Email: ja.hn4[at]mailgw.com
20+ yoe as dev/IC. 10+ yoe in managerial and executive roles. Multiple great exits and acquisitions. I have recently built a software NGO with over half a million supporters and over a thousand active volunteers and major political and media networking. I have built tech for Tezos, Oracle, Shell, Digitas, Saatchi & Saatchi, Time Warner, Sparkasse, Bank of America.
If there's a problem related to tech, I can solve it, and build a team or company around it. Available for work as dev/IC, EM, Director, or CTO, with experience in each. Full-solution MVP development from scratch. Performance optimization and modernization of older systems. DSL and programming language design, compilers. Let me know if you're looking for experience that isn't below! HN posts are short. CV upon request.
If you think I might be able to help you, shoot me an email: damian.jobsites+hn@gmail.com
~~
Example engagement types:
- Long term dev / IC or managerial roles
- Security audits for cryptography and secure code
- Review your code and dev processes, 10-page report
- Short-term dev and research work
- One-shot meetings
(see reply for skill list)
- Backend Programming: Zig, Rust, Haskell, Python, JS, TypeScript, Node, Vue, React, Elm, Scala, C, C++, SQL, Perl, PHP, Clojure, OCaml, Erlang, Elixir, Theorem provers (TLA+, Isabelle HOL, Agda), ...
- Devops & co: NixOS, Terraform, AWS, Docker, Ansible, Linux admin, Distributed Systems, ... Quote from code review: "This is the most beautiful Bash code I've ever seen written"
- Fintech: Dev experience with banks and financial institutions. Launched Tezos and other major blockchains. Dozens of smart contract audits.
- Bizdev: Gamification, consumer modelling, data-driven retention and engagement
- AI: LLMs, predictive text, machine vision (trajectory tracking), DSP, Big Data, ...
- Infosec: Cryptography, Red team testing, RE, audits, threat modeling, ...
- Other tech: Godot game engine, audio engineering (mastering), Verilog, VHDL
Management and business: Minor in Psychology, led and managed teams between 2 and 30 people, product design and gamification, hiring, executive and political outreach, media appearances, and a lot of other experience that won't fit in this post.
Fractional CTO for Startups – MVP to Maturity
I help early-stage teams avoid costly tech mistakes and scale confidently. I provide a range of services for teams at different growth stages.
I have 35 years of deep technical experience: For more information please contact me directly via https://www.theconsultantcto.com/?sid=hnf2507 or on LinkedIn: https://www.linkedin.com/in/lajosm/.Ex-Google engineer, 10+ years in software, last 2+ focused fully on GenAI. I’m looking for consulting and hands-on prototyping work—building real stuff, not just giving advice.
I help teams integrate LLMs into real-world workflows. Comfortable working across the stack (Python, React), from quick prototypes to production systems.
Past work includes agentic workflows, eval pipelines, prompt frameworks, GPT-powered tools, and full-stack AI products.
I prefer working directly with stakeholders. Big fan of startups.
LinkedIn: https://www.linkedin.com/in/andrei-puni/ Email: andrei@voxcode.ai
Location: Seattle, WA, USA
Remote: Yes
Willing to relocate: No
Email: josh@standardlabs.dev
Website: https://standardlabs.dev
Resume: https://standardlabs.dev/resume
I’m a U.S.-based principal engineer with 10+ years of experience, specializing in JavaScript, React, and Next.js. I help product teams ship fast, modernize legacy frontends, and solve tough architectural problems without adding tech debt. I’m a strong written communicator — ideal for async, remote-first teams.
Highlights
- Refactored complex React apps for performance and maintainability
- Migrated production apps to Next.js for improved SSR and data handling
- Boosted Core Web Vitals and Lighthouse scores
I’m currently available for remote, part-time or short-term contract work. If your team could use a senior partner to move faster and cleaner, let’s talk.
Hi! I'm Matt. I solve team problems: individual issues, teamwork, cross-functional collaboration, delivery, workflows.
Looking for fractional / consulting / coaching work helping managers (directors, etc) or high-performing ICs.
I've delivered disproportionate value in helping solve issues with quality, delivery, collaboration, attrition, and org design.
I've also helped managers/leaders upgrade their systems and behaviors to get much better results out of their team with a lot less work.
PhD, MBA, Business development USA, EU (Germany), China, Brazil
https://www.linkedin.com/in/jayvmiles/
Hexa is building the governance backbone for modern enterprises. Complex data integration, intelligent workflows, zero legacy systems.
What we need:
- Backend engineer with LLM API integration experience
- Experience with RESTful APIs, database architecture, scalable infrastructure
- Comfortable with full-stack work when required
Stack: TypeScript, SvelteKit, PostgreSQL, Python
Interested? hiring@wehexa.com
Portfolio: https://jonathancj-portfolio.netlify.app
CV: https://drive.google.com/file/d/1uKcwO-bxxvLsEkg0KzDkQlq--D3...
Hi! I’m Jonathan — a creative and purpose-driven freelance web developer and tech consultant passionate about building thoughtful digital experiences that serve real people and solve real problems. Whether it’s launching a responsive site, integrating a backend system, or helping your team align tech with strategy, I bring both technical skill and heart into every project.
With 3+ years in full-stack development and 5+ years of hands-on freelancing experience, I’ve had the privilege of working with startups, organizations, and mission-driven teams like FinEd, JCFAP, and Hydroball SG.
Note: I’m comfortable working solo or in tandem with a partner (we’re building a coding studio together soon), and I typically work on fixed-price engagements.
Skills: Vue, Nuxt, JavaScript, WordPress, Figma, Tailwind, Bootstrap, WCAG accessibility, SEO, website performance optimization, and thoughtful UI/UX.
Let’s connect: Email me at contact [at] ssvideogrammer.com with a short intro that includes:1. Your project overview 2. How I might be able to help 3. The business outcome you’re aiming for 4. Any timelines or constraints
I'll get back to you within one working day to discuss next steps or set up a call.
GitHub: github.com/joonjavellana25
LinkedIn: linkedin.com/in/jonathan-c-j-698822100
Remote: Yes
Location: UK (Flexible on your timezone)
Relocation: No
Languages\Tech:
* PHP + Laravel + PHPUnit/Pest + Livewire/Inertia
* Javascript/Typescript, React, Zustand
* Python
Backend: Laravel, Node
Frontend: React , Vue , Livewire
Email: PTGPSoftware@outlook.com
PHP/JS/TS Development, Extremely competitive rates available.
I build new projects and revitalize legacy code. I work mostly with Laravel and React/Inertia or Livewire.
I integrate modern tools pragmatically, adding real-time features via Websockets (Laravel Reverb etc) and AI capabilities like RAG for context-aware search and content generation.
I develop methodically – implementing tests for new features and maintaining clear documentation while keeping sharp focus on shipping tangible results. Through proactive communication, we'll collaboratively define the sweet spot between code quality and delivery pace.
Location: California
Remote: Yes
Willing to relocate: No
Technologies: I'm a Rails dev and engineering leader, with 10+ years shipping Rails apps to production and leading teams doing the same. I started in Rails back in Rails 2 and have been in the Rails world ever since. I'm known in the Rails world for my writing (including a book) on the Hotwire stack.
Résumé/CV: You can learn a bit more about me and read some of my technical writing here: https://www.colby.so/writing
Email: david@colby.so
Location: USA / India
Remote: Yes
Willing to Relocate: Yeah
Technologies: Python, Django, FastAPI, React JS, NumPy, Pandas, Polars, GeoPandas, PostgreSQL
Résumé: https://dheerajck.github.io/dheerajck/
Email: dheerajck18@gmail.com
Hi there, I’m looking to join a small but high trust team / startup where I can focus on backend development with Python and also work on the AI side aswell.
I am a Generalist.
I work in US / EU timezones right now.
I am interested in working with an early stage fast moving startup now.
Feel free to reach out via email for any questions.
Thank you!
Senior Data Engineer (Ex-Google)
15+ years experience
Development:
Optimization: Modernization: Observability: Automation: Engagement model: 2-week sprints @ $15k per-sprint upfrontFree consultation: http://bit.ly/46lF7If | aj@ajwelch.dev | https://ajwelch.dev
Portfolio: https://seanw.org/
Live example projects: https://checkbot.io/ https://inclusivecolors.com/
Location: Edinburgh, UK and remote (I’m used to time zone differences and async work)
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I help startups with the UX/UI and web design of their products. This includes web apps, websites, landing pages, copywriting, and I can assist with frontend development where needed. My background of launching my own products and being a full stack developer helps me create practical designs that balance usability, aesthetics, development effort, and performance. I work to fixed price quotes for self-contained projects.
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The best live example of my work is Checkbot (https://checkbot.io/), a browser extension that tests websites for SEO/speed/security problems. The entire project is my own work including coding the extension itself, UX/UI design, website design (the homepage is optimised to load in 0.7 seconds, 0.3MB data transferred), marketing, website copy, and website articles on web best practices.
[ Rated 4.9/5, 80K+ active users, 100s of paying subscribers ]
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I have 10+ years of experience, including a PhD in software verification and 5+ years working for myself helping over 25 companies including Just Eat, Triumph Motorcycles and Fogbender (YC W22). See my website for testimonials, portfolio and more: https://seanw.org
Skills: Figma, Sketch, TypeScript, JavaScript, Vue, Hugo, Jekyll, WordPress, Django, HTML/CSS, Bootstrap, Tailwind, OCaml, Java, Python, C, analytics, WCAG accessibility, website SEO/speed optimisation.
Note: For large projects, my partner usually assists me in the background (I’m working on starting a design studio with her in the future)
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Email sw@seanw.org with a short description of 1) your project 2) how you think I can help 3) the business outcome you’re looking for and 4) any deadlines. I can get back to you in one working day to arrange a call to discuss a quote and how we can work together!
Application Developer with over a decade of experience.
* Native application development for iOS, Android, Mac and Windows
* Creating and/or integrating APIs/SDKs
* TV/Video applications on all platforms (Apple, Android, Amazon, Roku)
Extensive experience building products and platforms from the ground up.
Email: info at squirrelpointstudios dot com
Location: Portugal
Remote: Yes, remote only
Willing to relocate: No
Technologies: HTML, CSS, JavaScript, TypeScript, RxJS, Angular, Ionic, Cordova, Capacitor
Résumé/CV: https://nunoarruda.com/resume.pdf
Email: nuno@nunoarruda.com
Frontend Angular Developer and Ionic Developer Expert
Willing to relocate: No, but willing to travel
Technologies: Javascript/Typescript, Rust, Go, Node.js, React/Redux, Vue, PostgreSQL, SQLite, GPT APIs (OpenAI, Amazon Bedrock), etc
Résumé/CV: https://dwayne.xyz/resume
Email: contact@dwayne.xyz
I’m a web and app developer with over 15 years of professional experience. I’ve worked at startups, mid-sized companies, and large corporations including Apple, eBay, and the Comcast Silicon Valley Innovation Center. Since starting my freelance business in 2020, I’ve done a lot of work with Rust, Stripe payment APIs, and multiple GPT/LLM APIs. I specialize in full-stack web development, but I’m also experienced in iOS development, server administration, database design, API integrations and more. I'm happy with both short-term jobs (alone or on a team) or medium-term contracts in an agile environment.
Full-stack software engineer with machine learning skills. I have a decade of experience building successful products for early stage startups and larger organisations.
Most of my experience has been developing new greenfield projects in contexts with significant uncertainty. I navigate this through careful consideration of stakeholder needs, business requirements, and an iterative approach. Beyond new projects, I have also worked extensively with a wide range of existing front-end and back-end systems. I get up to speed and can be effective quickly.
I am familiar with cross-functional teams of 5-10 people in design, product, and engineering roles. Alongside this, I have experience working with smaller select teams tasked with building the technical foundation of a startup.
I consider myself a “product engineer” in the sense that I focus on the product as a solution to end users’ problems, not a technical challenge. Over the years I have worked with many designers, user researchers, and user experience professionals who have shaped my attitude towards software. User experience is paramount to me and I can create effective user interfaces without aid of an existing design. My overall outlook is entrepreneurial and product-focused.
I have a GitHub with open source projects that have thousands of active users, and the bulk of an MSc in artificial intelligence.
Available for remote opportunities. I can accommodate flexible working patterns to suit different needs. I am also open to project-based work at a fixed price dependant on scope and complexity.
What I do:
- Lead greenfield projects, navigate ambiguity, and translate non-technical ideas into a technical product
- Innovate solutions to hard problems with high complexity that touch on areas such as algorithms or system design
- Design robust front-end and back-end systems, such as web apps with complex interfaces, or Serverless architectures
- Implement supervised, unsupervised, or semi-supervised machine learning techniques. Including use of LLMs and associated tooling
- Debug and fix bugs in existing software, including both front-end and back-end systems
- Collaborate and work with teams on existing projects
GitHub:
https://github.com/andrewwalsh
Portfolio, projects, and contact details:
https://www.awalsh.io/projects
Example project tooling: Scrum and Kanban, typically using Jira
I am a freelance full-stack engineer/fractional CTO, and helping people consider their approach to freelancers is one of my favorite engagements.
tl;dr: get a founding engineer’s tech plan for your early stage startup • takes 2 weeks • $350 • happens over email • techplanletters.com
I don't really have that many skills.
The most complex thing I've made is https://docs.os.90s.dev/
Email me if it matches up with stuff you need done: admin@90s.dev
We are duo of an experienced developer and designer that will help build your app or prototype quickly, no bullshit. We have experience with building a variety of web apps that are used by millions of users, B2B and B2C.
Contact us at powdery.coda.7a@icloud.com
I am a Site Reliability Engineer (SRE), Google Style, with experience at both large and small organizations. I can help you build a Platform Engineering practice from the very beginning. I'm looking to help small dev teams increase their velocity by implementing best-practices of Devops: CI/CD, Kubernetes Deployments, and effective Monitoring frameworks.
My resume: https://resume.gauntletwizard.net/ThomasHahnResume.pdf
My LinkedIn: https://www.linkedin.com/in/thomas-hahn-3344ba3/
My Github: https://github.com/GauntletWizard
Looking for contract, part-time or volunteer work, specifically in renewable energy or smart grid consulting. I can also help write/review grant applications for Canadian federal/provincial support, but outside my areas of direct work.
Preferably smart grid technology, wind energy, solar PV, energy policy. Happy to chat about the long term revenue streams on the electricity grid, especially opportunities on the distribution system.
Location: Remote, prefer opportunities in US/Canada
Experience - Fifteen years total. Wind energy design background (Netherlands), Power systems degrees, experience working with the Canadian Federal government.
Remote: Yes, please. Willing to relocate: No.
Résumé/CV: On request. See linkedin: https://www.linkedin.co/in/eldrichrebello Email: eldrich [at] eldrichrebello.ca Scientific publications: https://scholar.google.com/citations?user=a0oog-YAAAAJ