Marcin N.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I'm a full-stack developer who uses AI like a villain would use his superpowers. We'll start off by closely discussing your vision. A few hours later, after clarifying questions, you're receiving a draft with proposed tech stack and plan to implement. After getting green light from you, first thing I do is I set up CI/CD in GitHub repo and deploy the hello world - so you'll see tangible progress from day one. Then the real work begins - GitHub Issues closed by PRs merged to main branch with comments detailing the progress. I've been doing this for 10 years professionally, first line of code was over 20 years ago, software engineering is second nature to me. I put huge focus on delivering high quality results in timely manner, your satisfaction is paramount to achieving my own goals. I approach every project with meticulous care and genuine passion. I communicate honestly and don't slack off - having hired freelancers myself, I understand the importance of reliability and clarity. Lucky for you, I don't do weekends, and work time is from dusk till dawn. I have a strong grip on computer science topics: software engineering stages, databases, operating systems, data structures and algorithms, system design, hardware, embedded systems. My experience includes building: - Full-stack development: backend (APIs, ORM, authentication), frontend (responsive apps, real-time dashboards), and mobile applications - Data solutions: databases (SQL, NoSQL, Redis), advanced data processing (batch and streaming), robust data pipelines (specialized expertise in Dagster), and optimized performance (numba, polars, efficient SQL) - Web scraping & IoT integration: automated data extraction (browser automation, APIs) and sensor data management - DevOps: containerization (Docker), orchestration (Kubernetes, Docker Compose), infrastructure management (Terraform, GitOps/Flux), CI/CD, Google Cloud suite (BigQuery, Data Studio, Cloud Functions, Firebase, IoT Core, Pub/Sub), Azure - Production-grade programming: Rust, Python, JavaScript/TypeScript (React/Next.js) - Blockchain & crypto trading: previously worked with DFINITY, but also experienced in crypto trading (using Nautilus Trader framework) Can't help much when it comes to professional design. For the right idea, I'm happy to consider partnership deals! Let's go get it!