Open to opportunities

Artur User

@arturuser3

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Senior frontend developer crafting reliable, high-load web apps in fintech and mission-critical systems.

Germany

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What I'm looking for

I’m looking for a role building complex web applications where architecture, maintainability, and long-term growth matter—especially in fintech or mission-critical systems with high reliability requirements, where thoughtful performance and clean code reduce costly errors.

I’m a Senior Frontend Developer focused on complex web applications with high load and reliability requirements. I’ve built a mission-critical communication web platform with chat, audio/video calls, geolocation, emergency triggers, a live activity map, and a media player for replaying recorded sessions.

At TASSTA, I also led frontend architecture work as Tech Lead: selected and configured the stack, set up automation and CI/CD, and established repo best practices. I’ve improved performance (load time 4.5s→2s, bundle size 2.4MB→1.6MB), sped up CI/CD 2x (15→7 min), and scaled UI development with Storybook and reusable component libraries while mentoring developers through code reviews.

Experience

Work history, roles, and key accomplishments

Current

Senior Frontend Developer

Current

Tassta GmbH

Mar 2022 - Present (4 years 4 months)

Built a feature-rich emergency communications web platform, including chat with audio/video messaging, geolocation features, and an admin panel. Implemented private and group WebRTC calls with automatic emergency call triggers and developed mapping, replay, and a reusable UI component library.

TypeScript Next.js Redux toolkit styled components Storybook WebRTC Formik Vite I18next Jest Sentry Pnpm CI CD Lazy Loading Clustering Geofencing

Head Frontend Developer

Modulbank

Jun 2020 - Mar 2022 (1 year 9 months)

Developed and maintained an entrepreneur banking web platform, including a client dashboard and admin panel for business agents. Led an AngularJS to React/Redux migration with test coverage improvements and bundle/load-time optimizations.