Senior Software Engineer (Transfers, Client Journeys)

Requirements

• Backend / BFF:
• Node.js (v20+) with TypeScript
• AWS Lambda handler development (both SST and raw CDK patterns)
• API Gateway (REST/V1) — authorizers, routing, gateway responses
• Middy middleware framework
• Integration patterns: cross-account STS AssumeRole, Secrets Manager, DynamoDB, SNS
• RESTful API design and OpenAPI specifications
• AWS & Infrastructure:
• AWS CDK and/or SST for infrastructure as code
• Core services: Lambda, API Gateway, DynamoDB, VPC, IAM, KMS, Secrets Manager, SSM Parameter Store, SNS
• VPC networking — Lambda in VPC, security groups, egress configuration
• Lambda provisioned concurrency and auto-scaling
• Understanding of WAF and ingress routing patterns
• Testing:
• Vitest for unit and integration testing
• MSW (Mock Service Worker) for API mocking
• Testcontainers experience is a plus
• ...