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Senior-Backend-Developer (m/w/d)

Mariendorf, Berlin💼 Full-time🗓 2026-05-12 → 2026-08-05

Core

Designing, building, and optimizing scalable microservices and APIs for a premium used car trading platform.

Role type

Senior Backend Developer (Microservices)

Builds

Scalable microservices, REST & GraphQL APIs, and integrated external systems for the automotive sales platform.

Domain

Automotive / E-commerce

Deliverable

production ML models | product features

Required skills

JavaScript, TypeScript, Node.js, Microservices architecture, API design (REST & GraphQL), Relational databases, NoSQL databases, CI/CD pipelines, Code reviews, Performance optimization.

Preferred skills

Mentoring junior developers, Clean Code principles, SOLID principles, System integration.

Technologies

Node.js, TypeScript, JavaScript, REST, GraphQL, Microservices, CI/CD

Responsibilities

Architecting and implementing microservices, developing and optimizing APIs, integrating external systems, ensuring performance and scalability, conducting code reviews and testing, mentoring junior developers.

Seniority

Senior, hands-on IC

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