Full-Stack Engineer (f/m/d)

Zenjob·Berlinsenior

In short

→Desarrollas funcionalidades completas desde la idea hasta el despliegue en una plataforma de trabajo flexible con IA.
→Trabajas en backend (Java, gRPC) y frontend con TypeScript, priorizando calidad y observabilidad.
→Destaca por liderar proyectos E2E con autonomía y mentorar a otros ingenieros en equipo multidisciplinario.

No se requiere inglés, pero se valora la capacidad de comunicación en entornos multilingüe

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What they ask for

✓Experiencia comprobada en entregas completas E2E de funcionalidades técnicas.
✓Fuerte enfoque en observabilidad: logging estructurado y tracing distribuido.
✓Capacidad para colaborar con equipos técnicos y no técnicos, influir en decisiones técnicas.
✓Autonomía y orientación a resultados en entornos ágiles y de alta velocidad.
✓Empatía y habilidades de mentoría para fomentar un entorno colaborativo.
✓Conocimiento sólido en TypeScript y Java, con experiencia en gRPC.

Don't tick every box? That's normal — your free dossier shows your gaps and how to cover them in the interview.

TypeScriptJavagRPCevent-driven backend servicesfrontend applicationsobservabilitystructured loggingdistributed tracingCI/CDdocumentation

Who should you write to at Zenjob?

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Please note: For this position, we are unable to offer visa sponsorship or relocation support. Applicants must already hold the legal right to work in Germany (e.g., EU/EEA citizenship or a valid residence/work permit). About us Zenjob is an AI-powered flexible staffing platform that has efficiently connected companies and temporary workers since 2015. Companies use our platform to book ready-to-work staff in real time, while students use our app to find part-time jobs that conveniently fit around their studies. Over 40,000 students and 1,000 partner companies from logistics, retail, and hospitality in all major German cities share our belief that good work is not a coincidence. It is the result of innovative technology and genuine commitment. Good work starts here. About the role As a Fullstack Engineer (f/m/d) you'll play a key role in shaping and building our product at Zenjob. Working across the full stack, including event-driven backend services and polished user-facing interfaces, you'll collaborate closely with product managers and stakeholders, set engineering standards, and mentor others along the way. If you thrive in a fast-moving environment and want to make a real impact on a product used by thousands of workers and businesses, we'd love to hear from you. How you will contribute Design, develop, and own end-to-end features-from ideation and technical proposal through to production deployment and ongoing maintenance. Build and evolve backend services and frontend applications using TypeScript and Java, leveraging gRPC as our primary service communication protocol Collaborate cross-functionally with business, product and data to deliver high-value, high-reliability features. Champion continuous value delivery by advocating for quality and elevating engineering practices. Help drive architectural and process decisions, bringing your experience to bear on choices that affect the whole engineering organisation. Mentor and support other engineers, fostering a culture of learning, feedback, and continuous improvement. Enable the organisation through tooling, documentation, and shared libraries that raise the bar for contributions across the codebase. Who you are You have a history of consistently delivering complex, high-impact initiatives E2E – from shaping the business case to collaborating cross-functionally towards the finish line and measuring results You have a strong appreciation for observability - you understand the value of structured logging and distributed tracing in production systems. You are collaborative and communicative, with the ability to clearly articulate trade-offs, influence technical direction, and work effectively with both technical and non-technical stakeholders. You are self-driven and outcome-oriented, capable of leading complex initiatives from ambiguity to delivery with minimal guidance. You are empathetic and inclusive, with a broad understanding of the different roles and functions within a product engineering team. What we offer Innovative mission: Together we create something new. Work in a dynamic set-up where you learn a lot and your every idea is heard. Unique team spirit : We can rely on each other blindly and celebrate all successes together as a team. Vacation : Recreation and further education is important, which is why we offer 28 days of paid vacation (increased by 1 day for every 2 calendar years of service with us, up to a maximum of 30 days), 1 day of special leave for community service, 5 days of paid educational leave, and the possibility of unpaid leave Hybrid working model : We love our brand new office in Prenzlauer Berg. But sometimes you need a little more flexibility. Zenjob’s flexible working model combines the best of both worlds, so you can work remotely up to 2 days / week (1 day, during the first 6 months, so we can guarantee you the best onboarding). Dog-lover : If you have a dog, feel free to bring it with you.

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