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Senior Backend Engineer

SumsubLondon, United Kingdom
JavaMongoDBElasticSearchAirflow

Now we are looking for a Senior Backend Engineer to build and evolve backend services that power our core products.


What You Will Be Doing:

  • Design and develop core platform components, services, and shared libraries that power every product team across the company.
  • Build foundational infrastructure that enables product teams to deliver features faster while maintaining consistency, reliability, and security.
  • Develop security-critical services for protecting sensitive data, secure access, and encryption.
  • Design and optimize high-load distributed systems for image and video processing.
  • Improve the performance, scalability, and fault tolerance of mission-critical platform services.
  • Shape our observability platform by evolving monitoring, logging, tracing, and alerting capabilities.
  • Plan and execute large-scale, zero-downtime data migrations.
  • Expand and improve our multi-region infrastructure to meet latency, availability, and data-residency requirements.
  • Drive architectural decisions and take ownership of platform initiatives from design to production.
  • Work on a diverse set of technically challenging problems spanning distributed systems, infrastructure, security, and developer productivity.

About You:

  • Strong experience with backend development (Java, databases, distributed systems)
  • Confident in system design and building scalable, production-ready solutions
  • Able to work independently and take full ownership of complex tasks
  • Understand performance, reliability, and best practices for backend services
  • Experience working in a product-driven engineering team
  • Comfortable collaborating with other teams and contributing to shared codebases