36 backend developer English-speaking jobs in North Rhine-Westphalia

Senior TypeScript Developer (3+ Years Experience) | AI & FinTech Our client is an innovative, venture-backed ... ingDesign, develop, and maintain scalable applications using TypeScr iptBuild and enhance both frontend and backend

scalability and long-term maintainability Collaboration Work closely with product managers, designers, and backend ... You’ll be expected to bring strong opinions on architecture, performance, and developer experience, helping ... About the Role: As a Senior Android Developer (m/f/d), you will take full ownership of our Android application

handling Test strategy: experience building testing practices systematically within a team Background in developer ... You spend most of your time on the backend – building AI-integrated services, async pipelines, and the ... YOUR ROLE Backend & API: Build and extend FastAPI endpoints, Celery task orchestration, PostgreSQL schemas

generation & context engineering Experience with AI and agentic frameworks (AI SDK or similar) Strong backend ... financial analysis features (P&L analysis, liquidity planning, KPI dashboards) Technologies: AI API Backend

Laboratory employee/developer focused on emulsions for R&D projects in cold forming. Plans and executes experiments, documents results, and supports scaling to production.

Champion developer experience by building intuitive tooling, documentation, and self-service workflows ... and test engineers to integrate new components smoothly, resolve build and linking issues, and keep developer ... performance through caching strategies, parallelization, dependency analysis, and tooling that minimizes developer

Senior iOS Engineer will shape the architecture of Redcare Pharmacy's mobile platform. Responsibilities include driving modularization, defining technical standards, improving CI/CD reliability, and strengthening testing strategies. Requires expertise in Swift, large-scale production apps, modular architecture, and modern concurrency concepts.

Android Developer with 5+ years of experience in Agile/Scrum environments. Expertise in Jetpack Compose, Coroutines, Flow, LiveData, ViewModel, and Navigation Component. Strong understanding of Android architectural patterns, mobile design principles, and CI/CD pipelines.

fragmented ownership Affinity for conversational AI technologies (LLMs, NLU, chatbots, voicebots) and backend

Join our team in Berlin, Essen, München and apply online as Segment Developer Data Centre (f/m/d).

Requirements and Skills 10+ years experience in backend engineering and system architecture.

Requirements and Skills 10+ years experience in backend engineering and system architecture.

University degree in information technology or related Minimum 4 years of work experience as an SAP IT developer

University degree in information technology or related Minimum 4 years of work experience as an SAP IT developer

University degree in information technology or related Minimum 4 years of work experience as an SAP IT developer

platforms or similar environments Informatica platform certification (e.g., Cloud Data Integration Developer

Requirements 10+ years experience in backend engineering and system architecture.

including storage, analysis, data privacy, and security.Qualifications and Skills10+ years experience in backend

Computer Scientist / IT Specialist (m/f/d) as a C# Software Developer for CAD Applications Become ... 1, 2026, we are looking to strengthen our team in Troisdorf near Cologne/Bonn with a C# Software Developer

Requirements and Skills 10+ years experience in backend engineering and system architecture.