Backend Developer Jobs in State of Berlin, Germany

ZEOS B2B Platform team at Zalando builds the core engine enabling partners to integrate and scale within the Zalando ecosystem. As a Backend Engineer you will develop scalable Java microservices, design RESTful APIs, and own the full lifecycle from code to production monitoring in AWS and Kubernetes.

Customer Risk Lifecycle team at N26 builds secure, compliant banking services through micro‑service based risk management. The Backend Engineer designs, develops, tests, deploys and maintains Kotlin/Spring Boot services, collaborates cross‑functionally, and drives technical standards.

Core Systems team at N26 builds and revamps the bank's core banking platform, handling accounts, ledgers, and payment processing. The Backend Engineer will own end‑to‑end feature development on microservice‑based systems written in Kotlin, Spring Boot, and deployed on Kubernetes with Kafka and Postgres, collaborating cross‑functionally to improve reliability and security.

Software Engineering team at Bliq builds the software powering driverless operations. The Backend Engineer designs and implements backend services and internal tooling, shaping system architecture and the tech stack while leveraging AI coding tools for productivity.

Media Streaming Team at SoundCloud builds and operates a global-scale audio streaming platform. The role designs, builds, and maintains backend APIs and services, collaborates with Android, iOS, web, and full‑stack engineers, and ensures performance, scalability, and reliability through debugging and architecture work.

Backend Developer App at omos media GmbH focuses on building robust backend services for their product suite. The role involves designing, implementing, and maintaining APIs and server-side logic, collaborating with cross-functional teams to ensure scalability and performance.

Investments Team at N26 builds a secure, real-time trading platform for crypto, stocks, ETFs and managed funds. The Backend Engineer writes high‑performance Kotlin services, owns feature delivery from concept to production, and partners with product managers on discovery.

Search Engine Team at About You builds a cutting‑edge search platform that powers product discovery across the e‑commerce site. The Backend Engineer develops high‑traffic APIs with Node.js and TypeScript, manages large data volumes using BigQuery, and integrates search results with BI systems.

Purchasing Interface Team builds the core systems for buying, procurement, private label and fotostudio operations. As a Backend Engineer you will develop high‑traffic web applications with PHP/Laravel, design and scale RESTful APIs and background jobs, and own feature delivery from code commit to production monitoring.

Purchasing Interface Team builds the core system for operational processes in purchasing, procurement, private labels and photo studio. As a Backend Engineer you will develop high‑frequency web applications with PHP Laravel, design and scale RESTful APIs and background jobs, and own feature delivery from code commit to production on AWS ECS. Based in Hamburg or Berlin, on‑site work with a hybrid model as needed.

AdTech Platform Team builds a scalable advertising technology stack serving millions of users. The Backend Engineer designs and implements high‑performance services with NestJS, integrates external A/B testing and feature‑flagging APIs, and ensures robust testing and deployment pipelines.

Engineering team at Mercanis builds the Agentic AI Procurement Suite, a modern, transparent platform for intelligent procurement. As a Backend Engineer you will develop and maintain event‑driven backend services using Node.js, NestJS and TypeScript, write clean, well‑tested code, and collaborate with product, design and senior engineers to deliver scalable features.

Engineering team at koppla builds a next‑gen collaborative scheduling platform for construction. The Backend Engineer designs and implements backend services and APIs, contributes to system architecture, and collaborates cross‑functionally with product, design, and senior engineers.

Customer Identity team at N26 builds frictionless customer identity verification products that are secure and regulator‑compliant. As a Backend Engineer you will design, develop, test and deploy microservice‑based features using Kotlin/Java and Spring Boot, mentor junior engineers and uphold high security and code quality standards.

Qontext is building the independent context layer for AI, a foundational infrastructure that lets AI processes act on live company knowledge. As a Backend Engineer you will design and scale the backend systems, own the ingestion and retrieval architecture, and build high‑performance retrieval and ranking services.

Qontext builds the independent context layer for AI, providing real-time, context-aware data to AI agents. As a Backend Engineer you will architect and develop core backend services, build data ingestion engines, design scalable APIs and collaborate on data modeling for retrieval‑augmented generation workflows.

Backend Engineering team at Trade Republic builds and scales financial services platforms using modern JVM technologies. The role designs high‑availability cloud services on AWS, develops Kotlin‑based microservices with Spring and Vert.x, and implements automated CI/CD pipelines with GitHub Actions and Kubernetes.

Backend Engineering at Trade Republic builds scalable, high‑availability services for Europe’s largest savings platform. The role designs and implements cloud services on AWS, develops backend components using Haskell and JVM technologies, and automates delivery with GitHub Actions and Kubernetes.

GALVANY-Tech drives the energy transition with an AI-based Operating System for heat pumps and integrated energy systems. As a Backend Engineer you will design event‑driven architectures in Go and Kafka, build high‑performance APIs, integrate LLMs and ML models, and own services from design through deployment and observability.