Software Engineer, Backend (Mid/Senior)
Core
Design and ship end-to-end financial systems for transaction authorization, ledger accounting, credit decisioning, and rewards engines.
Role type
Senior IC backend engineer (fintech)
Builds
Modern credit programs, payment processing systems, and rewards platforms for brand partners
Domain
Fintech, payments, and financial services
Deliverable
production ML models | product features
Required skills
Go, distributed systems, relational databases, API design, cloud infrastructure, CI/CD, incident response
Preferred skills
AI tools adoption, system design leadership, mentoring
Technologies
Go, MySQL, DynamoDB, Temporal, Kafka, Kubernetes, AWS, GitHub Actions, Datadog, Statsig
Responsibilities
Own critical financial systems from authorization to rewards; build net-new products; contribute to foundational platform work; leverage AI across the stack; collaborate cross-functionally; participate in on-call rotations
Seniority
Senior, hands-on IC with potential for system design leadership