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PRODUCT SOFTWARE ENGINEER (BACK END JAVA) (M/W/D)

Köln, NORDRHEIN_WESTFALEN🌐 Remote💼 Full-time🗓 2026-05-26 → 2026-09-26

Core

Design and implement Java back ends for new and evolving products, translating business goals into domain models and reliable services.

Role type

Senior IC Product Software Engineer (Back End Java)

Builds

Headless microservices, clean APIs, and automated workflows for sustainability and recycling products.

Domain

Environmental services / Plastics recycling / Sustainability

Deliverable

production ML models | product features

Required skills

Java, Spring Boot, Hibernate/JPA, RESTful API design, relational databases (MySQL/PostgreSQL), Docker, GitLab CI/CD

Preferred skills

React/Next.js/TypeScript, cloud services, test automation

Responsibilities

Collaborate with Product and Front-End teams to design and implement back ends; Model business goals into domain models and services; Create clean APIs and refine coding standards; Build and refine GitLab pipelines and Docker images; Mentor junior engineers; Experiment with new Java features and cloud patterns.

Seniority

Senior, hands-on IC with mentorship responsibilities

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