08.10.2026 aktualisiert

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Senior React Native / React / Node.js Developer (TypeScript), 100% Remote

Banja Luka, Bosnien-Herzegowina
Nur Remote
Bachelor of Electrical Engineering
Banja Luka, Bosnien-Herzegowina
Nur Remote
Bachelor of Electrical Engineering

Profilanlagen

Milan_Susnjar_Senior_Full_Stack_Engineer_React_Node_js_TypeScript.pdf

Über mich

Senior full-stack engineer, 14+ years. React Native, React and TypeScript on the front end, Node.js (NestJS) and PostgreSQL on the back end. I build mobile and web products end to end for teams in Germany, Austria and the UK, 100% remote, B2B.

Skills

JavaScriptMobile Application DevelopmentPostgreSQLNode.jsNext.jsTypeScriptReact.jsBackendReact NativeReact ReduxApi DesignNestJS
React Native and cross-platform mobile
Building and leading iOS and Android apps with React Native and Expo, from the first commit to App Store and Google Play releases. Multi-brand and white-label apps on shared component libraries (Medion, Vaillant), native platform debugging, offline-first data and React Native upgrades.

React and TypeScript frontend
Modern web apps with React, Next.js, TypeScript, Redux, React Query, MUI and Tailwind CSS. Complex, performance-sensitive UIs, including a canvas-based planning tool built on an Entity Component System (ECS) architecture.

Backend and APIs
Node.js, NestJS, PostgreSQL, Redis and Docker: REST APIs, schema design and migrations, caching, scheduled jobs and data pipelines. Also Express and GraphQL, and earlier Django REST Framework and MySQL.

DevOps and production
CI/CD pipelines (Bitrise, App Center, EAS Build), automated TestFlight and Google Play releases, Docker deployments on Hetzner with Coolify, monitoring with Sentry and structured logging.

Testing and quality
Jest and React Testing Library, Playwright end-to-end tests (including stabilising a flaky suite and CI), Maestro for mobile e2e, feature flags with ConfigCat for controlled rollouts.

Design systems
Turning Figma and Adobe XD designs into reusable, pixel-accurate components across multi-brand products.

AI-assisted development
Claude Code and Cursor as part of the daily workflow: planning first, delegating mechanical and verifiable work, and reviewing every change myself.

Own product: Večeras
An entertainment guide app I built and run on my own: Expo app for iOS and Android, NestJS API on PostgreSQL and Redis, a daily scraping and enrichment pipeline, Docker and CI/CD.
https://veceras.app


Deutsch: Senior React Native / React / Node.js Entwickler mit über 14 Jahren Erfahrung. Langjährige Remote-Zusammenarbeit mit Kunden in Deutschland und Österreich (u. a. Medion und Vaillant über codecentric, ABS Safety). Verfügbar ab sofort, 100 % remote, Abrechnung per Rechnung (B2B).
Projektsprache Englisch fließend, Deutsch Grundkenntnisse.

Erfahrung

Berufserfahrungmehr als 10 Jahre
Freelancer seit2019

Sprachen

GermanGrundkenntnisseEnglishverhandlungssicherSerbianMuttersprache

Projekthistorie

Founder & Full-Stack Engineer

Built and run an entertainment guide app end to end: Expo/React Native app for iOS and Android, NestJS REST API on PostgreSQL and Redis, scheduled data pipeline with scrapers and TMDB/IMDb enrichment, Docker, CI/CD on Hetzner with Coolify, Sentry and automated job reports, Maestro e2e tests, releases to both stores. https://veceras.app

Senior Software Engineer

ABS Safety GmbH
Built and shipped a TypeScript-based web product for roof safety-system and solar panel installations planning. Implemented ECS architecture, feature flags, React components, and PDF export. Converted Figma designs into reusable, pixel-perfect React components and customized MUI. Integrated REST and GraphQL APIs for real-time synchronization with backend services.

Lead Mobile Engineer

Sparwk
Architected and delivered React Native applications from scratch for iOS and Android, owning mobile architecture, release strategy, and deployment automation. Set up Bitrise CI/CD pipelines with automated TestFlight and Google Play releases. Built a reusable component library from Figma designs and implemented data fetching and caching with Axios and React Query.

Software Engineer

Codecentric
Delivered 10+ enterprise web and mobile applications across IoT, logistics, and HVAC. Built MVPs with React Native and Django REST Framework. Led end-to-end product development including requirements gathering, architecture, and stakeholder coordination. Built 3 IoT mobile apps for Medion and delivered the myVAILLANT Pro HVAC app with 3 white-label variants. Established engineering practices such as CI/CD, code reviews, pull request workflows, and pair programming.

Lead Mobile Engineer, part-time (concurrent)

Wowflow
Architected React Native mobile apps from scratch for Android and iOS, owning technical design and release automation. Configured App Center CI/CD pipelines for automated builds and releases. Built a reusable component library from Adobe XD designs to ensure consistency and speed up feature development.

Software Engineer

BPS Systems and Processes
Full-stack development using Java EE, JSF, Primefaces, MySQL, and CSS. Built and maintained enterprise web applications.

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