Senior Backend Cloud Engineer — AWS Serverless (Remote)

Senior Backend Cloud Engineer — AWS Serverless (Remote) About EverUp We’re a UK startup making gift-card shopping rewarding. Our mobile app (React Native) and web experiences run on a serverless AWS backend. We’re hiring a Backend Cloud Engineer to

evolve and maintain

the APIs, databases, and services that power payments, wallet, rewards, and near-real-time features. The role 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. What you’ll do Maintain 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 touch AWS 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-haves 8+ 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 work Remote-first within UK time zone, startup-paced, with high ownership. We value clean code, small safe changes, and excellent operability. Hiring process Intro 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 opportunity We’re an equal-opportunity employer and welcome every background and perspective. How to apply Send your CV, GitHub / portfolio, and a brief note describing a production backend you

maintained / evolved

and the reliability or cost improvements you delivered. Add your current compensation, time zone and location.