Senior Full Stack Engineer (m/w/d)

Location: Berlin (hybrid, 3 office days per week)
Languages: Fluent in English
Experience Level: 5-10 years in software engineering

About marta
At marta, we build technology that makes high-quality home care accessible, transparent, and human. Our platform connects families and caregivers across Europe, creating trust, dignity, and simplicity in one of the most essential industries: elderly care.

After establishing ourselves as the technological leader in the live-in care market, we are now entering the next growth phase — scaling our product and engineering organization to deliver greater speed, stability, and impact. Our goal is clear: to set the new standard for technology in elderly care.

• Build high-quality features across backend and frontend using TypeScript, Node.js, and React.
• Translate product requirements into clean, maintainable implementations.
• Take full ownership of your code — from design to testing to observability.
• Ensure features include regression tests and predictable behavior under load.

• Contribute to core services across 9 microservices and multiple apps.
• Help simplify and consolidate the system where possible (e.g., monorepo adoption, shared library improvements).
• Maintain predictable APIs, clear data flows, and stable interfaces.

• Deliver quickly without compromising quality — lean, simple, pragmatic solutions.
• Identify unnecessary complexity and reduce it.
• Write code that others can understand and build upon.
• Use AI tools to accelerate documentation, scaffolding, and test creation.

• Break down features into clear, executable tasks.
• Give constructive feedback early when requirements are unclear.
• Align with Product on feasibility and necessary trade-offs.
• Build secure-by-default components and handle data with care.
• Assist in improving reliability, monitoring, and incident response.
• Follow CI/CD processes and avoid untested changes or hotfix shortcuts.

• Have 5–10 years of experience building production-grade systems.
• Write fast, clean, and maintainable code in TypeScript, Node.js, React.
• Understand backend fundamentals: Hexagonal Architecture, NestJs/Inversify, Express.js, AWS SQS/SNS, Sockets, PostgreSQL, TypeORM.
• Know your way around AWS (ECS/EKS), Docker, Kubernetes, Terraform.
• Have experience with CI/CD pipelines (GitHub Actions, CircleCI).
• Work pragmatically: prefer simple solutions over abstractions.
• Care deeply about testing and long-term reliability.
• Take ownership of what you build — even after it ships.
• Communicate clearly with engineers, product managers, and designers.
• Enjoy working in a lean, fast-moving team with minimal hierarchy.

• Experience with observability (Prometheus, Grafana, Sentry).
• Prior work in distributed systems or microservices.
• Experience with AI-assisted development workflows.