- Turn ideas into running code:
- Work in cross-functional squads with Product, UX and Data colleagues to design, build and evolve applications end-to-end.
- Back end: choose your strength (Java/Spring Boot or PHP/Laravel) and create reliable domain logic and APIs.
- Front end: craft engaging UIs in React/Next.js with TypeScript, component libraries and modern CSS.
- Build the glue in-between: Design clear contracts between front end and back end (REST or GraphQL), handle auth flows and optimise performance all the way to first paint.
- Shape a modern platform: We’re moving toward a headless, microservice-oriented landscape. As a senior, you’ll help create clean APIs, refine coding standards and champion the right refactorings.
- Automate where it matters: Build and refine GitLab pipelines, Docker images and workflow engines that remove manual steps - both in development and inside the products themselves.
- Grow - if you want to: Mentor junior engineers, run architecture sessions or even lead a small squad when it fits your personal goals.
- Stay curious: Experiment with new language features, edge-side rendering, server components, cloud services - any idea that helps us close product loops faster.
Senior Product Software Engineer (Full Stack) (m/w/d)
limited
Interzero Europe GmbH • Köln
-
Vollzeit
Köln
ab sofort
Interzero is one of the leading service providers in closing product, material, and logistics cycles and a pioneer in plastics recycling, operating Europe’s largest sorting capacity. Guided by the principle of “zero waste solutions,” the company supports more than 80,000 customers across Europe in the responsible handling of recyclable materials, helping them improve their sustainability performance and conserve primary resources. With around 2,000 employees, Interzero generates annual revenues of nearly one billion euros. According to Fraunhofer UMSICHT, Interzero’s recycling activities alone saved approximately 1.04 million tons of greenhouse gas emissions and 8.09 million tons of primary raw materials compared to primary production in 2024. Further information at: www.interzero.de.
Aufgaben
Profil
- Experience: 5 + years of professional software experience.
- Backend: Solid back-end chops in either Java/Spring Boot or PHP/Laravel.
- Frontend: Modern front-end skills with React, Next.js and TypeScript.
- Architecture: Clear understanding of RESTful API design, relational databases (MySQL/PostgreSQL) and containerisation with Docker.
- DevOps: Familiarity with GitLab CI/CD – our DevOps team handles the heavy lifting, but you're comfortable tweaking pipelines.
- Quality: A feel for clean architectures, test automation and the judgement to choose the right pattern at the right time.
- Mindset: Fluent English (German is a bonus), a collaborative mindset and genuine curiosity about how products succeed in the real world.
Angebot
- Job Security: You can expect a varied, exciting, and secure role with one of the largest environmental service providers in a future-proof industry.
- Compensation: You receive performance-based pay with a strong focus on maintaining your work-life balance.
- Flexibility: You benefit from flexible working hours and the option to work remotely.
- Creative Freedom: You work in an environment where ideas, initiative, and creative freedom are encouraged and supported.
- Flat Hierarchies: You operate within flat hierarchies and quickly take on responsibility for your own tasks.
- Collaboration: You experience a culture of collaboration and respect at eye level, both within and beyond your team.
- Development: You have access to internal and external training and development opportunities.
- Health: You benefit from a comprehensive health management program.
- Benefits: You receive attractive perks such as corporate benefits, bike leasing, free drinks and fruit on-site, and coverage of the Germany ticket or an Edenred card.
Ansprechpartner
Jobs mit Sinn - für unsere Zukunft
Interzero – resources SAVED by recycling
Im Jahr 2022 hat Interzero 2,1 Millionen Tonnen Wertstoffe im Kreislauf geführt. So konnten wir 8,7 Millionen Tonnen Primärressourcen schonen. Dies entspricht dem Gesamtgewicht von mehr als 170.000 Einfamilienhäusern. Gleichzeitig wurden durch die Einsparung von einer Million Tonnen Treibhausgasen CO2-Emissionen von 100.000 Einfamilienhäusern kompensiert. Let’s #MoveTheDate
