Senior Fullstack Engineer (m/f/d)

EGYM

Berlin, DE

Your daily workout

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 teams in Berlin.

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

Your fitness level

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

Your training goal for your first 6 months

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

Modern Tech Stack & AI Evolution: We don't just maintain; we evolve. Explore our Tech Radar to see our stack, and join us in building an AI-agentic, iterative, and incremental product culture where AI is a core accelerator of our development lifecycle
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
Dynamic & International: Be part of a motivated, ambitious and international team that uses English as a working language - get some team insights
Work-Life-Balance: Enjoy a hybrid workplace model, lots of flexibility and 30 days of vacation
Fit & healthy: Train for free with EGYM Wellpass in several thousand sports and health facilities across Germany and/or use our in-house gym with EGYM products
Flex Budget:Use €60 per month flexibly for public transportation and a meal subsidy
Mentoring Program: Exchange knowledge and grow together across teams and locations through our self-organized mentoring platform
Discounts: Get a variety of great discounted offers, from fashion to leisure, through our employee benefits portal
Bike Leasing:Stay active and use our leasing bike offer for your way to work or in your spare time
Subsidized Pension: Profit from our employer-subsidized pension