Posted by whoishiring 7/1/2025
Ask HN: Freelancer? Seeking freelancer? (July 2025)
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.
IPLocate is on a mission to provide developers with reliable, affordable, and easy-to-use IP address intelligence - geolocation, threat data, network information and more.
We're looking for engineers to write SDKs and integrations to use our APIs with popular programming languages, frameworks, and tools. We would prefer to work with multiple folks who are experts in their respective language/framework rather than a single engineer to write 20 integrations, so we'd love to hear about your experience.
We're also looking for content writers to help write practical tutorials, step-by-step guides, and real-world use cases for our website and blog, and for publication elsewhere (e.g. Medium, Dev.to).
Details and contact links: https://www.iplocate.io/build-for-iplocate
(We've recently launched this page as an open offer to interested folks. Get in touch with your details and we're happy to formalize an offer.)
Hi, I am Chris. I am an Australia but I have an EU work visa. I have 6+ years as a Full Stack Software Developer. I am experienced in the ReactJS and React Native tech Stack, and have developed API endpoints in Ruby on Rails. I have worked with companies such as Sportsbet, AIA Australia and Optus.
I have experience with AI / Machine Learning, where in my most recent project I was collaborating with the Queensland Cancer Council to produce a research paper (still in peer review) on breast cancer and Interpretable Machine Learning.
Tech Stack: Python (Pandas, Pytorch, Matplotlib), Typescript/Javascript, OpenAi / Antropic / Openrouter APIs, ReactJS/React Native, Redux, Ruby on Rails, NodeJS, Elixir/Phoenix, Coolify, AWS/Google Cloud.
Available: Immediate
Website: https://www.christopheragnus.com
I can be contacted via email at infinitycoin9 [at] gmail.com
Full-stack software engineer with 10+ years of experience delivering clean, scalable, and maintainable code. I specialize in modern web and mobile app development.
Core Skills Frontend: React.js, Vue.js, Next.js, TypeScript, JavaScript, HTML5, CSS3 (SASS), jQuery Backend: Node.js, Python (Django), Java Mobile: Flutter, React Native, Kotlin Databases: PostgreSQL, MySQL, MongoDB, Redis, Microsoft SQL Server DevOps / Cloud: AWS, Heroku Design / UX: Figma, Photoshop
From building interactive dashboards and mobile apps to deploying cloud services and optimizing legacy systems, I’ve worked across a wide range of industries and use cases.
Looking for short- or long-term freelance projects.
christadcooke@gmail.com https://christacooke.com/ https://www.linkedin.com/in/christadc/
Willing to relocate: No
Email: adrian.bercovici.hn@gmail.com
LinkedIn: https://www.linkedin.com/in/adrian-bercovici-8799b218/
GitHub: https://github.com/sanzor
Technologies: Erlang/OTP, C# (with Orleans, Blazor), Rust (actix, kameo, tokio), Python, Temporal, Azure, RabbitMQ, Redis (pub/sub also), Kafka, IIoT, SCADA, MES, OPC DA/UA
Available immediately.
Software architect and senior backend developer specialized in: Actor model programming (Erlang, Rust, and C#), Realtime applications (sockets, websockets), chat apps, event driven systems (event sourcing), domain driven design, SCADA/MES industrial control systems (interfacing with PLC/HMI, OPC DA/UA), rewriting systems (monolith to microservices), decoupling components, multiplayer game servers
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
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:
- Context Engineering
- User Experience Engineering
- Technical writing and documentation
- Vectorization and Elasticsearch Tuning
- RESTful API design and implementation
- React SPAs
- Web Scraping
- Cleaning up brownfield legacy code
- US/Offshore project planning and management
LinkedIn: https://www.linkedin.com/in/leegillentine/
Contact: lee(at)fishburd.com
Hi, I'm a seasoned software professional with 15+ years of experience across the stack, from low-level systems and protocols to web and mobile apps to DevOps CI/CD pipeline engineering to modern AI/LLM/agentic workflows. I like solving real business problems using stable and proven tools, as well as prototyping ideas, so whether you're looking to build a v1 of your product, a DevOps engineer, or looking for a CTO for a more established org, please reach out!
Technologies: TypeScript, Python, Go, JavaScript, Rust, Lua, Next.js, OpenResty, Nginx, PHP, Docker, Podman, CRIU, Linux namespaces, Firecracker, Express, Deno, Bun, Node.js, HTTP, X.509, TLS/SSL, SMTP, OAuth, OIDC, JWT, PostgreSQL, SQLite, Redis, MySQL, AI agents, LLM, RAG, vector databases, FastAPI, MCP, Streamlit, ELK, Terraform, OpenTelemetry
Résumé/CV: https://amirmalik.net/resume
Email: amir@amirmalik.net
Location: Warsaw, Poland
Remote: Yes
Willing to relocate: Yes
Des: User Research, User Flow, UX/UI, Web, Holistic, Design System, Wireframes, Email Design, Dashboards, Mobile App Design, 3D, Illustrations, Animations, Figma, FinTech, E-commerce.
Dev: Ruby, Rails, Hotwire, JavaScript, TypeScript, React, Vue, Svelte, Nest, Next, Nuxt, Tailwind, Postgres, Docker, CI/CD (Gitlab & Github), Grafana, etc.
Email: maxberdnikau@gmail.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
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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.