Senior Fullstack Engineer (m/w/d)

Drive features from idea to production across the full stack, collaborating directly with product and design and seeing the real-world impact of your work. Contribute to the technical direction, coding standards, and development workflows across backend and frontend. Build scalable, performant, and robust backend services using NestJS, TypeORM, and GraphQL, while also contributing to our Vue.js/Nuxt frontend. Develop comprehensive tests to ensure high product stability and quality assurance. Collaborate closely with product and design during feature discovery, prototype evaluations, and feasibility assessments, representing engineering interests. Actively engage in sprint planning, stand-ups, and retrospectives, suggesting process enhancements. Balance rapid feature development with long-term code quality, maintainability, and scalability. Participate in code reviews and contribute constructively to the evolution of our codebase. Foster strong teamwork through active collaboration and building trust within the team. Influence how we build, not just what we build. Your ideas and technical proposals have a direct path to production. Tech Stack 100% TypeScript GraphQL over HTTP and WebSocket NestJS, TypeORM, Bull, Node.js PostgreSQL, Redis Nuxt / Vue.js, SCSS, Storybook Nx Monorepo Terraform, Docker, Kubernetes (AWS) 5+ years of professional experience in fullstack or backend-heavy engineering, ideally in Node.js / TypeScript environments Strong understanding of relational databases (PostgreSQL), query optimization, and data modeling Experience designing and maintaining APIs (REST and/or GraphQL) Solid knowledge of a modern frontend framework, ideally Vue.js / Nuxt, but React or Angular experience transfers well Solid testing practices: unit, integration, and end-to-end You communicate clearly, take ownership, and thrive in a small team where your decisions have real impact Interest in AI tools and technologies Willingness to spend part of each week in the office, closely collaborating with product and design teams Experience with DevOps practices (Kubernetes, AWS, Terraform, CI/CD, Datadog) is a plus Flexible working hours We understand that every employee has different needs and commitments. That's why we offer flexible working hours models. With this, we aim to ensure that work and private life are in harmony and that you can complete your work in a way that works best for you. Learning We believe that continuous learning is an important part of our employees' personal and professional development. Therefore, we not only provide a learning budget but also access to our reteach academy to ensure that you can fully realize your potential. Urban Sports membership We believe that a healthy work-life balance is important and that regular physical activity contributes to this. Therefore, we provide you with a 40 EUR/month contribution towards your Urban Sports membership. Company pension scheme We want our employees to be able to provide for their old age in the best possible way. Therefore, we offer not only the option to sign up for a commission-free company pension scheme or to transfer your existing one but also add an additional amount on top of the monthly payment. Virtual Employee Stock Option Plan (vESOPs) We want our employees to have the chance to share in the success of reteach. Therefore, we offer the opportunity to receive virtual shares (vESOPs). Birthday Leave We gift you an additional day off for your birthday, so you can fully enjoy it. Let’s make learning a great experience. reteach ist eine innovative Software-as-a-Service Lösung, die digitales Lernen revolutioniert. Sie ist die ideale Lernplattform für effektive unternehmensinterne Trainings (z.B. Onboarding, Unterweisungen, Qualitätsmanagement) sowie Produkt- und Kundentrainings.