Senior Software Engineer (Backend)
WSD GmbHLondon, England, United Kingdom
Posted March 25, 2026
Full Time
About the Company
WSD GmbH is a specialist in delivering online solutions for structured financial products, building end‑to‑end websites and web applications for investment banks, brokers and other financial institutions worldwide. The company covers the full product lifecycle—from concept, design, and development to hosting, document generation (term sheets, prospectuses, PRIIPs, KID calculators) and ongoing site management—while integrating market‑data distribution and high‑reliability application hosting. WSD distinguishes itself through agile, customer‑centric project delivery, a highly motivated and creative engineering team, and a culture that balances innovation with work‑life harmony across offices in Frankfurt, Göttingen, Switzerland, Hong Kong, London and New York. These capabilities make WSD a trusted partner for leading financial service providers seeking cutting‑edge, technically robust digital platforms.
Job Description
We are looking for a Senior Software Engineer to design, build, and operate scalable cloud-native systems. You will work on distributed services, event-driven architectures, and modern DevOps pipelines while collaborating closely with product managers and other engineers in an Agile environment.
Requirements
- 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
