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.