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AWS Developer


● Test-First Feature Delivery: Develop high-performance services using Node.js/TypeScript and Lambda alongside the automated tests that prove them.
Collaborate with AI agents to refine plans, generate test cases from specs, and validate generated code against acceptance criteria.

● Integrated Testing: Own the integrated test suite — Jest unit tests, API/integration tests, and end-to-end checks — and use AI to broaden coverage while keeping the suite fast and stable.
Ensure backend data and UI outputs are continuously verified together.

● Test Strategy & Pyramid: Shape and maintain the team's test pyramid.
Decide what gets unit-tested, contract-tested, integration-tested, or covered end-to-end, and keep that balance healthy as the codebase grows.

● Operational Excellence: Provide 3rd-line support (08:00–18:00 UK) using CloudWatch Logs for root cause analysis, assisting DLQ message recovery, and triaging flaky tests when they surface.

● Environment & Test Data Management: Manage feature flags in LaunchDarkly, support multi-environment deployments, and curate test data so suites run reliably across environments.

Qualifications

● Programming: Strong proficiency in JavaScript/TypeScript and Node.js.

● Cloud Proficiency: Practical experience with S3, Lambda, DynamoDB, SQS, EventBridge; enough VPC/IAM knowledge to provision and tear down test environments.

● Testing (primary): Strong experience designing test strategies across the test pyramid (unit → integration → end-to-end) — unit (Jest), integration, contract (e.g. Pact), and end-to-end. Practical exposure to performance/load testing, mocking/stubbing patterns, test data management, coverage reporting, and integrating tests into CI to fail fast and stay stable.

● AI Tooling: Familiarity with using AI coding assistants to break down problems, generate test cases and stubs, and iterate on both code and test generation.

Soft Skills & Values

● Attention to Detail: Meticulous approach to verifying data and logs.

● Flexibility: Willingness to handle occasional out-of-hours incidents as part of the "You Build It, You Run It" model.

Must Have

  • Programming: Strong proficiency in JavaScript/TypeScript and Node.js.

  • Cloud Proficiency: Practical experience with S3, Lambda, DynamoDB, SQS, EventBridge; enough VPC/IAM knowledge to provision and tear down test environments.

  • Testing (primary): Strong experience designing test strategies across the test pyramid (unit → integration → end-to-end) — unit (Jest), integration, contract (e.g. Pact), and end-to-end. Practical exposure to performance/load testing, mocking/stubbing patterns, test data management, coverage reporting, and integrating tests into CI to fail fast and stay stable.

  • AI Tooling: Familiarity with using AI coding assistants to break down problems, generate test cases and stubs, and iterate on both code and test generation.
    Soft Skills & Values

  •  Attention to Detail: Meticulous approach to verifying data and logs.

  • Flexibility: Willingness to handle occasional out-of-hours incidents as part of the "You Build It, You Run It" model.

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