Job Opportunity
Senior Backend Cloud Engineer - AWS Serverless
We're a startup operating in the UK, focusing on gift-card shopping as a rewarding experience. Our mobile app and web platforms run on an AWS serverless backend.
* Maintain and evolve microservices behind API Gateway and WebSocket using AWS Lambda; implement authentication/authorization via Cognito User Pools (JWT) and Lambda authorizers for REST;
* Optimize data models and access patterns in DynamoDB and RDS databases; manage indexes, migrations, and query performance;
* Develop asynchronous workflows using SQS/SNS (idempotency, dead-letter queues, retries) and ensure healthy observability with CloudWatch metrics/logs and alarms;
* Maintain and improve IaC (AWS SAM/CloudFormation), CI/CD pipelines, and environment promotions;
* Integrate and support third-party services used for payments, open banking, notifications, fraud/risk, analytics, and support tooling;
* Troubleshoot production issues, drive root cause analyses, and implement preventive fixes and runbooks;
* Adhere to security best practices (least-privilege IAM, secret management, input validation, auditability).
You'll work across our event-driven, serverless stack to maintain and evolve production systems. That means adding features, fixing bugs, improving performance and cost, tightening security, and raising reliability—while collaborating closely with Mobile/Web teams.