Your industry is ready for digital transformation. Are you?
Senior Software Engineer, Backend
Location
Germany
Posted
77 days ago
Salary
0
Seniority
Senior
Job Description
Senior Software Engineer, Backend
WSD
• Design and develop scalable backend services using Node.js (NestJS) and Java / Kotlin (Spring Boot). • Build and maintain event-driven architectures using Apache Kafka. • Develop RESTful and asynchronous APIs for internal and external services. • Design and optimise data models using PostgreSQL, MongoDB, and Redis. • Deploy and operate services across Windows Server, Docker, and Kubernetes environments. • Build and maintain CI/CD pipelines using GitHub Actions to automate testing, security checks, and deployments. • Implement and maintain cloud-native application architectures focusing on reliability, scalability, and observability. • Integrate Elasticsearch for logging, search, and analytics capabilities. • Ensure code quality and security standards using tools such as SonarQube, OWASP dependency checks, and TruffleHog. • Participate in Agile ceremonies including sprint planning, stand-ups, and retrospectives. • Mentor junior engineers and contribute to engineering best practices and architectural decisions.
Job Requirements
- Minimum 5+ years of experience.
- Strong backend development experience with Node.js and NestJS.
- Solid experience building services with Java / Kotlin and Spring Boot.
- Experience working with Apache Kafka or other distributed messaging systems.
- Strong knowledge of relational and NoSQL databases including PostgreSQL and MongoDB.
- Experience using Redis for caching, messaging, or performance optimisation.
- Hands-on experience with containerisation (Docker) and orchestration platforms (Kubernetes).
- Experience deploying or maintaining applications on Windows Server environments.
- Practical experience building CI/CD pipelines using GitHub Actions.
- Familiarity with cloud-native architecture patterns (microservices, distributed systems, resilience).
- Experience with Elasticsearch for search, logging, or monitoring solutions.
- Knowledge of secure development practices, including static analysis and security scanning tools such as: SonarQube OWASP tools TruffleHog.
- Experience working in an Agile/Scrum development environment.
Benefits
- WSD is an employer that values diversity. We highly encourage applications from appropriately qualified and eligible candidates irrespective of age, race, religion, national origin, gender, sexual orientation, gender identity and/or expression, veteran status, disability, or any other status protected by applicable law.
Related Guides
Related Job Pages
More Backend Engineer Jobs
Senior TypeScript/Node.js Developer
Sigma Software GroupWe support enterprises, product houses, and startups with custom software solutions development and IT consulting.
• Own and govern API design by defining and maintaining strict OpenAPI specifications before implementation begins • Design and implement high-performance microservices using TypeScript and Node.js within a serverless AWS architecture • Drive FinOps excellence by architecting solutions with AWS Lambda, API Gateway, DynamoDB, and EventBridge to achieve a Scale-to-Zero cost model • Enforce logical isolation patterns across services, ensuring strict tenant data separation via JWT policies and Row-Level Security • Maintain adherence to the Ad Context Protocol (AdCP) across all data models for consistent AdTech data language • Develop reusable “Golden Path” templates, shared libraries, and engineering best practices • Conduct rigorous code reviews focusing on latency (<200ms), availability (99.99%), and observability • Translate product and commercial requirements into scalable technical specifications • Contribute to evolving the overall platform architecture toward standardization and reusability
Senior .NET Developer, Healthcare Project
Sigma Software GroupWe support enterprises, product houses, and startups with custom software solutions development and IT consulting.
• Design, develop, and maintain complex .NET-based applications • Collaborate with cross-functional teams including engineers, QA, and domain experts • Implement secure, scalable, and efficient solutions aligned with healthcare industry standards • Participate in code reviews, architecture discussions, and technical decision-making • Take ownership of features from requirements breakdown to deployment • Deploy and monitor services in AWS cloud-native environments • Handle production issues and incidents with accountability
• Programming in the CAD environment using C++ • Implementing new features in our standard software primtech as well as in primtechDT innovation projects • Discussing use cases with internal users and project managers • Testing new releases, performing internal approvals, and fixing bugs
.NET, SQL, Crystal Reporting, Mid-Level Developer
Vitamin SoftwareAchieve capital efficiency & beat deadlines through reliable and innovative healthcare technology solutions.
• Helping with letter configurations (there’s a big backlog) • Mapping requirements to backend fields in Meditrack • Supporting claims estimates • General technical support
