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# Senior Fullstack Engineer

- **Company:** EGYM GmbH
- **Location:** Berlin, Germany
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, Java (Programming Language), Artificial Intelligence, Application Integration Architecture, Continuous Delivery, Continuous Integration, DevOps, Interaction Design, Online Service Provider, E2e Testing, Prometheus, Software Engineering, SQL Databases, Data Streaming, Systems Architecture, TypeScript, Web Services, ReactJS, Grafana, Backend, Kubernetes, Codebase, React Native, Front End Software Development, Terraform, Grpc, Api Management, Golang, Microservices
- **Published:** November 12, 2026
- **Apply:** https://www.adzuna.de/details/5961896924

## About the Role

* Frontend Mastery: You have at least 7 years of hands-on experience in frontend development and operating professional web services
 * Web Expert: You possess advanced knowledge of TypeScript, React, and are comfortable solving complex UI challenges
 * State & API Management: You are experienced in integrating APIs and managing application state using TanStack Query, Jotai, or similar modern state managers
 * Backend Literacy: You can comfortably read and reason about backend code in our stack (Java/Go), follow data flows across microservices, understand service boundaries and dependencies, navigate SQL database structures, and diagnose the root cause of issues
 * Modern Tooling: You have experience working with design systems and a strong commitment to unit, integration, and end-to-end testing
 * CI/CD & DevOps: You have a solid understanding of CI pipelines and the principles of end-to-end continuous delivery
 * Bonus Points: You have experience with web-to-native bridges like Ionic, Capacitor, or React Native is a big plus, * Dynamic & International: Be part of a motivated, ambitious and international team that uses English as a working language - get some team insights

## Description

You are a Senior Fullstack Engineer (m/f/d) with in-depth Frontend knowledge driving the end-to-end development of our online services. While your primary focus is delivering high-performance web-based interfaces, you possess the technical depth to navigate our Backend and Mobile ecosystem end-to-end. You'll maintain architectural oversight across the entire solution, collaborating with team members to engineer holistic technical solutions that translate into global well-being. Are you excited to build interfaces that impact millions of users? Then apply now as Senior Fullstack Engineer (m/f/d) for our team in Berlin.

Your daily workout

 * Feature Ownership: You will lead the development of customer-facing features, guiding them from initial concept and UX testing to full implementation
 * Operational Excellence: You will facilitate engineering best practices within our monorepo setup and participate in our Communities of Practice to drive platform wellness and technical ownership across the organization
 * Technical Leadership: You will provide direction to the team, helping define the technical roadmap, system architecture, and development processes
 * AI-Enhanced Workflow: You will leverage AI-assisted coding tools to accelerate development, improve code consistency, and focus on solving high-level architectural challenges
 * Frontend Excellence: You will create complex user interfaces with a deep focus on interaction design, clean code and testability using industry best practices
 * Cross-Functional Collaboration: You will communicate effectively across teams to unblock challenges and design scalable solutions that work across the entire EGYM ecosystem, * Ownership: You take full ownership of your work, understanding its architecture and delivering on product requirements while improving testability
 * Ecosystem Integration: You become familiar with the EGYM ecosystem and the roles of various teams within the software engineering department
 * Codebase Proficiency: You contribute effectively and confidently to our shared codebase

The equipment we provide

 * Learning time: Use 10% of your time on learning topics of your choice (conferences, hackathons, internal and external events, videos, books or innovation projects)
 * Continuous Development: Develop your skills with varied, challenging tasks and regular feedback to benefit from a steep learning curve
 * Tech Stack: Work with our modern tech-stack such as: Go, Kubernetes, Prometheus, Grafana, Terraform, gRPC or PubSub. Curious? Then see all the technologies we use here: https://tech-radar.co.ts.egym.com