Backend Cloud Engineer — Aws Serverless

Overvieweverup provides instant cashback on purchases of gift cards from top brands and offers the excitement of winning extra cashback through free and engaging games. Our mission is to extend consumer budgets during rising living costs, blending savings with enjoyment. We offer prize-linked digital branded prepayments and turn shopping into opportunities. everup is a unique gamified shopping experience in the branded prepaid and curated goods market, helping customers save money while bringing entertainment and excitement. The roleYou’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. ResponsibilitiesMaintain and evolve AWS Lambda microservices behind Amazon API Gateway (HTTP / REST & WebSocket) and AWS IoT Core; implement authentication / authorization via Cognito User Pools (JWT) and Lambda authorizers for REST / HTTP. Maintain and optimize data models and access patterns in DynamoDB and MySQL (RDS); handle indexes, migrations, and query performance. Maintain asynchronous workflows using SQS / SNS (idempotency, DLQs, retries) and keep observability healthy with CloudWatch metrics / logs and alarms. Maintain and improve our 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 RCAs, and implement preventive fixes and runbooks. Uphold security best practices (least-privilege IAM, secret management, input validation, auditability). Tech you’ll touchAWS Lambda, API Gateway (REST / WebSocket), Cognito, DynamoDB, RDS MySQL, SQS / SNS, S3, IAM, CloudWatch, CloudFormation / SAM, EC2, ECS, plus fintech / comms integrations (Open Banking / PSP, Gift Cards, Analytics, Messaging, Support, and Risk assessment tools). Must-haves8+ years building / maintaining production backends; 4+ years with AWS serverless (Lambda, API Gateway, DynamoDB). Proficiency in JavaScript / Node.js; strong REST API fundamentals and event-driven patterns. Solid SQL / NoSQL skills (schema design, indexing, query tuning). Experience maintaining IaC (SAM / CloudFormation) and CI / CD (Code Pipeline). Security-first mindset and practical debugging / troubleshooting chops (OWASP). WebSocket / API Gateway connection management and real-time features. Payments / fintech and fraud / risk integrations. Observability practices (dashboards, tracing, log correlation) and SLOs. Elastic Beanstalk familiarity and data pipelines / warehousing exposure. How we workRemote-first within UK time zone, startup-paced, with high ownership. We value clean code, small safe changes, and excellent operability. Hiring processIntro call Technical deep-dive (systems design discussions focused on maintainability and evolution) Practical walkthrough (IaC / API / data-modeling maintenance scenario) Founder / lead chat & references Equal opportunityWe’re an equal-opportunity employer and welcome every background and perspective. How to apply⦿ When applying, please include the following in your CV / application : A link to your CV, GitHub, or portfolio. A short note describing a production backend you maintained or evolved, and the reliability or cost improvements you delivered. Your current salary or expected monthly salary (in EUR). Your notice period. Confirmation of your availability to work at least 6 hours per day aligned with EU time zones. ⚠️ Applications that do not include the above details will not be considered. Thank you for your interest — we look forward to your application #J-18808-Ljbffr