Backend Developer Jobs in North Rhine-Westphalia, Germany

Devoteam Germany is a KI-based technology consultancy specializing in cloud platforms, cybersecurity, data, and AI, supporting digital transformation for over 2,000 customers in Germany. As a Kotlin Backend Developer, you will own the full software lifecycle of API-first applications in agile teams—from requirements engineering through implementation to go-live and support—while designing scalable, resilient REST-based backend architectures.

Sopra Steria’s AI Backend team builds robust backend components for data‑intensive AI applications, designing API architecture, integrating models, and optimizing Neo4j graph‑database solutions. The role involves creating RESTful APIs, developing inference pipelines, and collaborating on AI portfolio prototyping and delivery.

Devoteam, a KI-based technology consultancy, seeks a Kotlin Backend Developer to drive end‑to‑end API‑first software delivery within its agile teams. The role designs scalable REST backend architectures, implements high‑performance services, automates operations, and mentors peers on technical challenges.

Devoteam Germany, a KI-based technology consulting firm specializing in Cloud, Cybersecurity, Data, and AI, seeks a Kotlin Backend Developer to join its Frankfurt team. You will own the full software lifecycle of API-first applications in an agile setting—from requirements engineering through implementation to go-live and support—while designing scalable, resilient REST-based backend architectures.

Devoteam Consulting, a KI‑basierte Technologieberatung, delivers end‑to‑end cloud and data solutions for enterprise clients. As a Kotlin Backend Developer you will design and implement scalable REST‑API services, build resilient backend architectures, automate operational processes and mentor teammates on technical challenges.

AEM Backend Developer - Senior on the Digital Experience team, building enterprise-grade digital experiences using Adobe Experience Manager. Designs, develops and maintains backend AEM solutions, creates components and services, integrates REST APIs, and collaborates with multidisciplinary teams to deliver scalable, high‑performance applications.

Backend Engineering at Bjak builds the core systems behind the AI Neobank app. The role designs and implements reliable APIs, workflows and financial product infrastructure that scale across markets and millions of users, collaborating with product, frontend, mobile and AI teams.

Devoteam Consulting, a KI‑basierte Technologieberatung, builds cloud‑native platforms and AI‑driven solutions for enterprise clients. As a Kotlin Backend Developer you will design and implement scalable REST‑API services, architect resilient backend systems, and drive automation across the software lifecycle while mentoring teammates.

Development team at Hootsuite builds and maintains the core backend platform that powers the SaaS social media management product. The role designs and implements infrastructure services, automation tools, and platform features while supporting developer experience and production environments.

Optiplay is hiring a Middle+/Senior Backend Developer to design and maintain external integrations with casino operators and partner platforms, with about 70% of the role focused on integration work and 30% on general backend and platform system design. Day-to-day work includes building resilient integration layers, contributing to core services and APIs, participating in slot game logic development, defining integration testing practices, and collaborating with Game Logic, Product, and DevOps t

BJAK Backend Engineering builds the core systems behind the AI Neobank app, enabling reliable APIs, financial product infrastructure and integrations at scale. The role designs, implements and maintains backend services for onboarding, payments, KYC, risk and more, collaborating with product, frontend, mobile and AI teams to launch features quickly and safely.

Devoteam Germany is a KI-based technology consultancy specializing in cloud platforms, cybersecurity, data, and AI, supporting digital transformation for over 2,000 German customers. As a Kotlin Backend Developer, you will design scalable, resilient REST-based backend architectures, own the full lifecycle of API-first applications in agile teams, and translate business requirements into technical solutions.

Turnblock.io backend team builds modular services for a tokenization platform. The Backend Developer (NodeJS) designs, implements, and maintains NodeJS/Express APIs, integrates third‑party RESTful services, and collaborates with frontend and blockchain engineers to deliver scalable products.

Engineering Team at payabl. builds scalable, high‑performance backend services for fintech and payments platforms. The Senior Backend Python Developer designs and implements Python microservices, integrates third‑party APIs, and drives performance improvements using AWS, Docker, and CI/CD pipelines.

Technology Projects team at GRAS Global Risk Assessment Services builds sustainable cloud platforms and backend services. The Senior DevOps Engineer will co‑own AWS/GCP infrastructure, design CI/CD pipelines, manage Docker containers, and develop Python APIs for geospatial data processing.

Engineering team at bisure GmbH builds scalable backend services for the company's digital platform. The Senior Backend Developer designs, implements, and optimizes server-side applications, collaborates with cross-functional teams, and ensures high performance and reliability.

AEM Backend Developer on the Digital Experience team, building enterprise-grade digital experiences using Adobe Experience Manager. Designs, develops, and maintains backend AEM solutions, integrates REST APIs, and collaborates with multidisciplinary teams to deliver scalable web content management platforms.

Engineering team at zeitsprung GmbH focuses on building scalable backend services for their platform. The Senior Backend Developer designs, implements, and optimizes APIs and data pipelines, collaborates with cross‑functional teams to ensure reliability and performance, and mentors junior engineers.

ARHS Group client team in Luxembourg builds mission‑critical backend systems for European institutional customers. The Senior Java Backend Developer / Technical Lead designs, develops, and maintains Java/Spring Boot services, leads technical design, mentors developers, and ensures secure, scalable delivery.

Secure Software Engineering research department at Fraunhofer SIT develops innovative security analysis tools. The student assistant will extend the backend of these tools using Java, implementing new vulnerability scanner functionalities within an agile development process.