Full-Stack Engineer (f/m/d)

Zenjob; Berlin; Hybrid; EUR 70,000 - 100,000; Full time

Benefits offered by this job

28 days paid vacation + annual accrual

Hybrid working model

Dog-friendly office

Annual training budget EUR 750

Urban Sports Club grant

Monthly NAVIT mobility credit

Quarterly team events

Job summary

Zenjob Limited in Berlin is seeking a passionate Fullstack Engineer (f/m/d) to shape and build our platform across the full stack. You will work on event-driven backend services and polished user interfaces, collaborating with product managers and stakeholders to raise engineering standards and mentor others.

If you thrive in a fast-moving environment and want to impact a product used by thousands of workers and partner companies, we'd love to hear from you.

Qualifications

• Experience delivering frontend and backend features end-to-end.
• Strong observability practices with logging and tracing.
• Collaborative with technical and non-technical stakeholders.
• Mentor teammates and help raise engineering standards.

Responsibilities

• Design, develop, and own end-to-end features from ideation to production.
• Build and evolve backend services and frontend apps using TS and Java.
• Collaborate with business, product and data to deliver high-value features.
• Champion quality and improve engineering practices across teams.
• Influence architecture and processes to benefit the org.
• Mentor engineers and foster a culture of learning and feedback.
• Create tooling and shared libraries to raise contribution quality.

Skills

End-to-end features

TypeScript

Java

gRPC

Observability

Mentoring

Cross-functional collaboration

Tools

gRPC tooling

Observability tooling

Job description

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.

Nice to have

• Familiarity with marketing and third‑party integration platforms such as Braze (customer engagement and push notifications), Adjust (mobile attribution and analytics), or Usercentrics (consent management / CMP)
• Experience managing consent flows and privacy‑respecting data pipelines, ensuring that user tracking and marketing signals are handled in compliance with GDPR and our internal PII guidelines.
• A practical appreciation for how marketing tooling integrates into event‑driven architectures-for example, forwarding events to third‑party destinations, managing SDK initialisation server‑side, or building robust webhook consumers.

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. We don’t bite and always have a bowl of water in our range of drinks
• Personal growth: Ongoing focus on your personal development (annual training budget of EUR 750, mentoring opportunities, constant career development conversations)
• Healthy mind in a healthy body: With us you will receive a 30 EUR Urban Sports Club grant to keep you fit. In addition, we have a small sports room in the office ourselves.
• Always mobile: You will receive EUR 40 credit per month for NAVIT, a sustainable mobility tool for public transport, bike sharing and much more.
• Legendary Events: Quarterly team events, winter and summer parties, budget for birthdays and anniversaries of our employees

We are proud to be an equal opportunity employer. We are committed to judging every qualified individual on their ability, regardless of age, gender identity, ethnicity, sexual orientation, disability status, or religion. There is no need to add your photo and age to the application.