Senior Backend Engineer - Cards
Core
Build and maintain high-throughput, distributed backend systems for card issuing, lifecycle management, and transaction processing for merchants across Europe.
Role type
Senior Backend Engineer (Cards)
Builds
Card issuing systems, transaction processing pipelines, and lifecycle management platforms for European merchants.
Domain
Fintech / Payments / Distributed Systems
Deliverable
production ML models | product features | infrastructure
Required skills
Kotlin, distributed systems, API design, relational databases, containerization, orchestration, CI/CD
Preferred skills
Elixir, Java, Golang, AI tooling
Technologies
Kotlin, Elixir, Java, Golang, Kubernetes, Docker, CI/CD pipelines
Responsibilities
Own end-to-end delivery of backend services including observability and production support; Contribute to architectural discussions for complex distributed systems; Conduct code reviews and maintain code quality; Collaborate with product managers and adjacent squads; Participate in incident reviews and on-call rotation; Champion AI tooling to accelerate engineering workflows.
Seniority
Senior, hands-on IC
