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 ( & WebSocket) and AWS IoT Core ; implement authentication / authorization via Cognito User Pools (JWT) and Lambda authorizers for REST /

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.