About Me

Product-minded backend engineer with 13+ years of experience — the last decade in TypeScript and Node.js — and Master's degrees in Computer Science and Mathematics. I own products end to end on small, remote teams: I built Validately's real-time UX testing platform from scratch, a key factor in its acquisition by UserZoom, then co-led its integration. Most recently, I've been building AI-agent and secret-detection security at Astrix.

Work Experience

Full Stack Engineer at Astrix Security (acquired by Cisco)

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Remote | Tel Aviv, Israel
  • Integrating EDR platforms (Microsoft Defender, SentinelOne, CrowdStrike) to discover AI agents and MCP servers on customer endpoints
  • Turning EDR telemetry into AI agent usage and vulnerability findings
  • Built and maintain scalable backend services and REST APIs for secret scanning — detecting and analyzing exposed credentials across multiple data sources
  • Improving the team's AI-assisted development workflow — authoring Claude Code hooks, skills, and MCP servers used in day-to-day engineering
  • Stack: Python, TypeScript, PostgreSQL, MongoDB, AWS

Backend Engineer at CRED

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Remote | London, United Kingdom
  • Extended the GraphQL backend serving large volumes of scraped analytical data
  • Implemented several web scrapers for new complex data sources
  • Worked closely with data engineers to implement their models in production systems
  • Stack: TypeScript, Node.js, GraphQL, PostgreSQL, Google BigQuery

Full-time parenting at Career Break

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Poland
  • Took a few months off to spend time with family and relocate between two cities.

Software Engineer at Winware.ai

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Remote | New York, United States
  • Cut core algorithm calculation time tenfold.
  • Invented a unique statistical model to assess user health based on the analysis of their in-app actions.
  • Stack: TypeScript, Node.js, TensorFlow, MySQL, Google BigQuery

Lead Software Engineer (promoted from Senior) at UserZoom

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Remote | Barcelona, Spain
  • Co-led the integration of Validately's moderated UX platform into UserZoom's after the acquisition, making it available across both UserZoom and UserZoom GO.
  • Led ongoing development of the platform, including its internationalization.
  • Hired, onboarded, and mentored a developer who quickly became a productive member of the team; wrote technical specs and ran code reviews.
  • Stack: TypeScript, Node.js, Redis, MySQL, WebRTC, WebSockets, React, GCP, AWS

Software Developer at Validately (acquired by UserZoom)

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Remote | New York, United States
  • As lead architect, built the remote moderated UX testing platform from scratch. Praised by clients for its stability, it became a key factor in the company's acquisition by UserZoom and the subject of US patent application US20210407312A1.
  • Designed the platform's REST API — consumed by the web frontend and the iOS and Android apps — scaled real-time sessions across instances with Redis-backed Socket.io, and tuned its Kubernetes deployment on GCP.
  • Wrote technical specs and ran code reviews as the platform grew from a solo effort into a team-maintained product.
  • Stack: TypeScript, Node.js, Redis, MySQL, WebRTC, WebSockets, React, GCP, ffmpeg

Software Developer at Orbis Investment Advisory Limited

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London, United Kingdom
  • In the Quantitative Analysis Department, co-designed and built an Rx/dataflow-based tool for backtesting alpha models, which became several analysts' tool of choice.
  • As lead implementer in a three-person team, engineered a tool to help portfolio managers optimally manage their portfolios' cash flows.
  • Stack: C#, SQL Server, WPF, WCF, Matlab, R

Software Programmer at University of Warsaw

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Warsaw, Poland
  • Developed an innovative semantic faceted search engine based on data extracted from Wikipedia, as my master's thesis.
  • Co-developed an efficient relational database schema that streamlined storing and querying parsed scientific articles, for the Synat research initiative, funded by the National Centre for Research and Development.
  • Stack: C#, Python, PostgreSQL

Education

Master's degree in Computer Science at University of Warsaw

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Thesis: Implementation of a system for conceptual graph queries · GPA 4.5/5

Master's degree in Mathematics at University of Warsaw

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Thesis: Using faceted search for navigating through scientific documents · GPA 4.5/5

Bachelor's degree in Mathematics at University of Warsaw

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Thesis: Co-Training approach in Machine Learning · GPA 4.5/5

Languages

English (full professional) · Polish (native speaker)

Skills

Backend: Node.js, TypeScript, Python, PostgreSQL, GraphQL, REST, Redis, MySQL
AI / ML: LLMs, MCP, Claude Code, AI-assisted development
Frontend: HTML / JSX, SCSS / CSS, TypeScript, React
DevOps: AWS, GCP, Docker, Kubernetes, Bash, Git

Interests

Generative art, Pen plotting, Toy making, Painting