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.
Tech Lead, Enterprise Architect or C# developer - decide on checkout. 15+ years of experience from airline, finance, pension and manufacturing as well as 2 startups. Ready for freelance contracts.
Location: Copenhagen/EU
Remote: Yes
Willing to relocate: No
Technologies: C#, React, React Native, a bit of Python
Specialties: Making IT and business love each other. Finding order in complexity, Seeing shortcuts and problems with design and implementation. EIOPA, Shrems II, NIST
Résumé/CV: https://www.linkedin.com/in/jesper-reiche-65b42226/
Website: https://jesperreiche.com
Email: jrhn@jmr.dk
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.
Location: EU
Looking for a principal-level C++ developer?
- Library Design – Design and implement modern C++ libraries and tools
- Architecture Review – Conduct architecture and design reviews
- Security Audit – Perform security and vulnerability assessments
- Performance Optimization – Tune performance and optimize hotspots
- CI/CD Engineering – Build CI/CD pipelines and cross-platform workflows
- Team Augmentation – Seamlessly integrate with your existing development team
Location: EU, EEST Bucharest time zone
Remote: Yes
Willing to relocate: Possibly
Technologies:
C++ 17, Python 3, Linux, OOP, TDD, Jenkins
Résumé/CV: https://docs.google.com/document/d/1pnVituSV1qz0hFUMajTj38bi...
Email: (Check Résumé/CV)
About: Software engineer with expertise in C++, Python (14+ years of full time software development experience). Proven track record in designing, developing, and deploying scalable backend systems and embedded applications. Passionate about writing clean, efficient code. Language agnostic, open to multiple tech stacks.
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
Hey I am Tunahan from Istanbul. I have experience with React on the frontend and with the experience level Rust, Nodejs and Golang on the backend.
CV: https://drive.google.com/file/d/1W7fa2NLFrix6Fwl7EEC0ZYEJ0Na... Linkedin: https://linkedin.com/in/dvtkrlbs Mail: hn@tunahan.me
Location: Augsburg, Germany
Remote: on-site, hybrid, remote
Willing to relocate: no
Technologies: C, C++, C#, Python, LabVIEW, embedded systems, mathematical optimization, simulation
Résumé/CV: https://www.linkedin.com/in/peter-ilberg/
Email: peter dot ilberg at gmail dot com
Software engineer with experience in user interfaces, real-time systems, data acquisition, semiconductor test systems, compilers, debuggers, algorithms, and general application development.
I’m looking for a software engineering position in embedded systems and formal methods, decision support systems and optimisation, and simulation and visualisation.
Portfolio: arabicworksheet.com Email: ahmed.gmurtaza@hotmail.com LinkedIn: https://linkedin.com/in/ahmedgmurtaza
Services: Website design and development, AI Chatbots, Custom RAG Applications, Websites using AI for image, document and responses generations.
I have over 10 years web development experience. I am building arabicworksheet.com which is AI based arabic learning website. I am based in Riyadh working for Bank Albilad and would love to do part time remote roles 20hrs/week.
Experienced (15 years) Data Engineer with a background in software engineering (BSc) and data science (MSc). I know all the ins and outs of building data pipelines, integrating various systems, preparing data for machine learning and deploying ML models. I also very much enjoy helping the customer brainstorm and coming up with a lean approach to reaching your goals.
Technologies I'm most familiar with include Python, C#, SQL, Azure, Spark, Databricks, DBT, Postgres.
Linkedin: https://www.linkedin.com/in/leoncullens/
Email: leoncullens@gmail.com
Senior Data Engineer (Ex-Google)
15+ years experience
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Development:
- ETL: Any framework, Python, Java, Go
- ELT: Any warehouse, dbt, SQLMesh, Dataform
- Streaming: Kafka, Flink, Dataflow/Beam, Spark
- CDC/Replication: Debezium, dlt, Airbyte
- Orchestration: Airflow, Prefect, Dagster
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Optimization:
- Performance, cost optimization
- Resource utilization, capacity planning
- Execution log, explain plan analysis
- Query rewriting, storage optimization
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Modernization:
- Code translation: Oracle, Teradata, Hive, Informatica
- Data migration: transfer, reformatting, validation
- Automation: sqlglot, jOOQ, Calcite, OpenRewrite
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Observability:
- Data quality: Great Expectations, Soda
- Data lineage: RCA, impact analysis
- Telemetry: logging, monitoring, alerting
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Automation:
- Build automation: Gradle, Maven
- CI/CD: Argo, Dagger, Jenkins
- IaC: Teraform/CDKTF, Helm/CDK8s
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Engagement model: 2-week sprints @ $15k per-sprint upfront
Free consultation: http://bit.ly/46lF7If | aj@ajwelch.dev | https://ajwelch.dev