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Senior Backend TypeScript Engineer – Node.js, AWS Lambda, SQS, SNS – OUTSIDE IR35
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Senior Backend TypeScript Engineer – Node.js, AWS Lambda, SQS, SNS – OUTSIDE IR35
£700–£800 per day (Outside IR35) • 100% Remote • 11-month rolling contract
Takeaway: Lead the architecture and build of a greenfield SaaS platform as a deeply senior, hands-on backend TypeScript engineer, with heavy emphasis on high-performance distributed systems, Node.js excellence, and real-world AWS serverless delivery. You’ll also have the opportunity to develop hands-on skills with Claude Code, one of the most advanced AI-assisted development tools in the industry.
Role Overview:
You’ll operate as the technical spearhead for a greenfield product build, reporting to the Director of Engineering. Expect deep backend engineering, distributed system design, and high-quality serverless delivery, plus the chance to adopt modern AI-assisted development practices as part of your workflow.
What You’ll Bring:
- Senior/Staff-level backend mastery in TypeScript and Node.js, with the ability to architect and lead distributed REST microservices at scale
- Strong authority in AWS serverless engineering: Lambda-first mindset, hands-on experience with API Gateway, SQS, Step Functions, EventBridge and IAM
- Deep data expertise across Aurora MySQL and DynamoDB: schema design, access patterns, indexing, query tuning, and pragmatic trade-offs around consistency, scale, and cost
- Real-world experience designing event-driven systems with SQS: idempotency, retries, ordering, DLQs, and operational resilience
- Strong API design sensibility: versioning, documentation, throttling, backwards compatibility, and a genuine obsession with developer experience
- Product-first mindset: comfortable shaping requirements, partnering with BAs, and operating without a traditional PO
- Concept to production: prior experience taking products from a blank sheet to live
- Excellent communication skills and confidence in ad-hoc client interaction
- Rigorous engineering standards: Git-based workflows, trunk-based development, CI/CD (GitHub Actions), IaC (CDK/Terraform), comprehensive testing, and secure-by-default coding
- Pragmatic, outcome-oriented, comfortable with ambiguity, and biased toward shipping
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What You’ll Own:
- Architecting, building, and shipping complex, high-performance distributed services in backend TypeScript/Node.js on AWS Lambda
- Designing and delivering resilient event-driven systems using SQS and related AWS messaging primitives
- Owning features end-to-end: product thinking, scoping, trade-offs, sequencing, and delivery
- Designing clean, well-versioned, well-documented APIs that other engineers love to consume
- Championing a high-quality engineering culture: testing discipline, peer review, CI/CD excellence, observability, performance, and secure coding
- Developing hands-on skills with Claude Code, including AI-assisted development patterns, smart refactoring, automated context management, and productivity-boosting workflows
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Contract Details:
- £700–£800 per day
- Outside IR35
- 100% remote (UK only)
- 11-month rolling contract
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