Hire me!

I'm currently travelling. Greece right now, but this changes fast. Open to remote work or relocation.

When we should talk

  • You need a senior full stack developer who owns backend, frontend, and deployment.
  • Your Elixir/Phoenix or Rails product needs better structure, reliability, or speed.
  • You're building something with LLMs, RAG, or generative pipelines and want it done properly.
  • You want someone who learns the unknown stack before day one. That's the job.

Really Trusted (Elixir/Phoenix/LiveView developer, remote, Vancouver) · 2021–2025

3.5+ years structurally scaling the application: designed an internal queue-like framework on an asynchronous model backed by database transactions, with Phoenix PubSub broadcasting row-level lock and data-upgrade notifications across the ecosystem. Oban-based ingestion guaranteeing transactional safety and zero data loss across restarts. OAuth2 security configuration, containerized Moodle LMS integration, PDF/CSV document generation pipelines, extensive test suites and system-wide hardening.

IFAD / United Nations (Ruby on Rails consultant, Rome, partially remote) · 2019

Built an automated translation reporting engine for global IFAD-supervised operations: less friction in international reporting pipelines, automated summaries delivered securely to government representatives worldwide.

Packhelp (senior backend developer, Warsaw) · 2018–2019

High-traffic Rails/Spree production app: API design, custom operational scripts and rake tasks, native integrations with BaseCRM, Intercom, and Segment, modular React UI features, and leading a dedicated developer squad in Agile/Scrum.

United Signals (React.js/Redux + Rails developer, remote, Germany) · 2017–2018

Built and shipped an MVP for user interactions in the financial services market.

Xing (React.js/Redux + Rails developer, Hamburg) · 2017

Full-stack tasks focused on modern frontend patterns; deep fluency in the Jest testing framework with a high standard of client-side code coverage, inside a structured Scrum group.

Chimera Prime (Rails full stack developer, Warsaw) · 2016–2017

Corporate client's high-availability backend (Rails 4/5, PostgreSQL, Redis, Sidekiq, Ansible, AWS) plus infrastructure stability work; mentored a junior developer on a secondary production project.

Bluebox AS (Rails full stack developer, remote, Norway) · 2016

Built and managed the secure backend API for a physical medical device helping patients with diabetes (Rails 5, PostgreSQL, React/Redux). Contract ran until the project ended when further venture funding could not be secured.

Kontomierz (Rails full stack developer, Warsaw) · 2016

Advanced core security systems and feature rollouts for Kreditech's "Monedo Pay" digital wallet: refactored core exception handlers and rewrote the test suite for the full project.

CodeQuest (junior Rails full stack developer, Warsaw) · 2015–2016

Core engineering on LiftHero, an Uber-style ride-sharing platform for senior citizens. Owned payment workflows: integrated the entire platform with Stripe. Ended when the startup scaled down after not securing investment.

Ecom Media (web developer and Linux server administrator, Warsaw) · 2014

Cross-functional web programming (frontend layouts, relational database design) plus provisioning and maintaining multiple standalone Linux production servers.

Freelance webmaster and graphic designer · 2010–2013

Full-cycle webmastering for individual clients: search visibility, responsive styling, custom digital graphic design.

Public work

  • DeerStorage, open-source data storage application I conceived and led: zero-refresh WebSocket UI, multi-user partitioning, Nginx + Let's Encrypt setup graded A+ by SSL Labs. Case study and live demo.
  • 1op.eu source, WebSocket-based encrypted chat application using Elixir and Vue.
  • compare_time, Ruby gem for debugging time-related problems.