(Senior) Product Engineer (Backend) (m/f/d)

Accountabilities:

• • Design, develop, and maintain reliable and scalable backend services for SaaS products.

  • Build APIs, data models, integrations, and other backend capabilities using Kotlin or Java and modern web frameworks.

  • Take ownership of features from problem discovery and prototyping through development, rollout, and impact measurement.

  • Collaborate closely with product managers, designers, and engineers across backend, frontend, mobile, and AI.

  • Extend beyond backend development when needed, contributing to web, mobile, infrastructure, or other areas to deliver complete product experiences.

  • Use AI coding assistants and modern development tools to explore unfamiliar codebases, accelerate development, and make well-structured cross-stack changes.

  • Focus on user outcomes rather than simply completing predefined technical tickets, using conversations, prototypes, instrumentation, and experimentation to validate ideas.

  • Contribute to technical decisions, engineering practices, code quality, and scalable product architecture.

  • Participate in an evolving engineering culture focused on end-to-end ownership, rapid experimentation, and continuous improvement.

  Requirements:

  • Professional experience in backend software engineering, with openness to candidates ranging from a few years of experience to senior-level engineers.

  • Strong hands-on experience with Kotlin or Java and a web framework such as Micronaut or Spring.

  • Experience developing SaaS products, ideally in an Agile or cross-functional product environment.

  • Strong backend engineering fundamentals combined with an interest in contributing outside the backend stack when a product feature requires it.

  • Familiarity with AI-powered coding assistants such as Cursor, Claude Code, GitHub Copilot, or similar tools, or a strong willingness to adopt them.

  • A product-minded approach, with the ability to understand user problems, evaluate potential solutions, and take ownership through delivery and rollout.

  • Strong curiosity, adaptability, communication skills, and engineering judgment.

  • Ability to collaborate effectively with product managers, designers, and engineers across multiple technical disciplines.

  • Experience working directly from design mockups or prototypes is a plus.

  • Knowledge of instrumentation and experimentation tools or practices, such as A/B testing, Grafana, or Mixpanel, is advantageous.

  • Experience with Kubernetes and Helm is a plus.

  • Practical experience with PostgreSQL is beneficial.

  • Familiarity with messaging technologies such as RabbitMQ or Apache Kafka is advantageous.

  Benefits:

  • Remote-first working model with the flexibility to work from home.

  • Option to work remotely from within the European Union.

  • Occasional team events, workshops, and meetings at offices in Berlin or Stuttgart, planned with advance notice.

  • Flexible work-life balance and support for an active lifestyle through an E-Gym-Wellpass membership.

  • Job bike leasing.

  • Regular team events and culture days designed to strengthen collaboration and team connection.

  • Relaxed and collaborative working environment with highly motivated colleagues.

  • Opportunity to play an active role in shaping a rapidly growing technology company.

  • Support and development opportunities to deepen technical expertise while expanding product and AI engineering capabilities.

  • Inclusive workplace welcoming people regardless of gender, age, sexual identity, background, religion, worldview, or disability.