Senior Backend Developer
Core
Design and build high-performance backend services and APIs for a global payment orchestration platform, handling millions of transactions and integrating with AI-driven fraud prevention and routing agents.
Role type
Senior Backend Developer (Payments Infrastructure)
Builds
Core transaction processing engine, event-driven microservices, and integration frameworks connecting to payment providers and gateways.
Domain
Fintech / Global Payments / AI-driven Financial Infrastructure
Deliverable
production ML models | product features
Required skills
Kotlin, Go, microservices architecture, payment processing concepts, relational databases (PostgreSQL), containerization (Docker, Kubernetes), cloud infrastructure (AWS/GCP), unit/integration/contract testing
Preferred skills
Spring Boot, WebFlux, Kafka, PCI-DSS compliance, observability tooling (Datadog, OpenTelemetry), network tokenization
Technologies
Kotlin, Go, Java, Spring Boot, WebFlux, Apache Kafka, SQS, PostgreSQL, Redis, AWS, Kubernetes, Docker, Terraform, Datadog, OpenTelemetry, GitHub Actions, ArgoCD
Responsibilities
Design and evolve backend services and APIs for authorization, capture, refunds, and reversals; architect resilient event-driven microservices; strengthen integration frameworks for PSPs and acquirers; apply security best practices for PCI-DSS compliance; own the full lifecycle of features from design to production monitoring.
Seniority
Senior, hands-on IC
