Senior Front-end Engineer focused on React, Angular, React Native, Expo, and Capacitor, with 11+ years across software development and application delivery.

I turn product requirements into reliable web and mobile delivery: from system design, API contracts, and implementation planning to staged rollouts, monitoring, and production releases. I work on both new features and the long-term evolution of existing products.

Resume · LinkedIn · Poland / Remote

• Frontend: React, AngularJS / Angular, Next.js, TypeScript, shared UI libraries, MUI, and Storybook
• Mobile: React Native, Expo/EAS, Capacitor, Apache Cordova modernization, and bringing existing web products to iOS and Android
• Native integrations: custom plugins, WebView bridges, deep links, authentication, push notifications, file uploads, and vendor SDKs
• Application architecture: API contracts and migrations, React Query, RxJS, Zod, feature flags, and reusable cross-platform flows
• Delivery: GitHub Actions, GitLab CI, Bitrise, fastlane, semantic versioning, TestFlight, and App Store / Google Play releases
• Product quality: testing, performance, production monitoring, accessibility, localization, and long-term maintenance
• Teamwork: feature planning, code review, mentoring, and coordination with product, design, and backend teams

• Led development and launch of a React + Capacitor app with 1M+ installs and 130,000 active users, including migration from React Native and release automation.
• Built internal tooling used to create or update around 1,000 iOS and Android apps, with automated build and publishing workflows.
• Contributed frontend features to a platform serving 40,000+ B2B clients and 15M monthly active users.
• Worked across AngularJS 1.5 through Angular 15, including booking widgets, Nx monorepos, shared components, and hybrid mobile applications.
• Take ownership of mobile delivery from requirements and implementation through EAS builds, testing, distribution, store publication, analytics, and ongoing support.

• Video to Text Converter — local multilingual video and audio transcription with TypeScript and Whisper.cpp; text, subtitles, and structured output.
• Capacitor Installer Source — a plugin that identifies the Android app store or package installer, with support for Capacitor 6, 7, and 8.
• Capacitor SEON Plugin — integration with the SEON Android SDK for device fingerprinting.
• Capacitor Facebook Login — my maintained fork with deferred deep-link and external-browser improvements.

Merged Sentry PR #22300 adds an option to stop Session Replay without flushing captured data, supporting applications that need to stop capture when consent is withdrawn.

Practical AI-assisted development with Claude Code, Codex, and local LLMs: planning, implementation, debugging, and project documentation, while keeping changes reviewable and maintaining a clear understanding of the systems I work on.

Open to long-term remote collaboration on frontend and cross-platform mobile products.