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# Senior JavaScript Engineer

- **Company:** Unitedkingdom
- **Location:** UK
- **Experience:** Expert
- **Salary:** £60,000.0 - £70,000.0
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Artificial Intelligence, Amazon Web Services, Automation of Tests, Software as a Service, Cloud Computing, Cloud Engineering, Databases, Continuous Integration, Amazon DynamoDB, PostgreSQL, Node.Js, NoSQL, Commercial Software, Software Deployment, TypeScript, Test-Driven Development (TDD), ReactJS, Front End Software Development, Terraform
- **Published:** September 11, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/senior-javascript-engineer/46546830

## About the Role

at senior level Deep experience with JavaScript and TypeScript, particularly in Node.js environments Strong frontend capability using React and Hands-on AWS experience across application deployment and infrastructure Experience with Infrastructure as Code, ideally Terraform Strong database fundamentals across relational and NoSQL stores such as PostgreSQL or DynamoDB Proven experience within modern CI/CD environments Clear understanding of scalable system design and cloud-native architecture Nice to have: Experience writing backends in Rust Exposure to AI-powered developer tooling or agentic workflows Background in platform engineering, SaaS, or product-led businesses Why Apply? £60,000 to £70,000 base salary plus performance-based bonus Hybrid working from Belfast Senior-level ownership without heavy management layers Real architectural influence over a platform central to global product delivery Modern, disciplined tech stack with genuine engineering standards Clear pathway toward Lead
or Principal progression Next Steps To discuss in confidence, connect with Ryan Quinn on LinkedIn or reach out directly at . Clean and ready to post. One thing worth adding if you have it: the interview process. Skills: React TypeScript AWS Benefits: Bonus

## Description

infrastructure managed through Terraform. The expectation at this level is clear: strong fundamentals, clean architecture, and confident decision-making. If you want architectural ownership and the space to shape how a platform scales, this is worth your attention. Key Responsibilities Design and evolve core platform systems with scalability and long-term maintainability in mind Deliver full-stack features across TypeScript and Node.js backends and React and frontends Architect and deploy cloud-native solutions on AWS Define and manage infrastructure through Terraform Own CI/CD pipelines and release processes Apply test-driven development and strong automated testing principles throughout Contribute to architectural decisions and long-term platform direction Troubleshoot complex production issues across the stack Work closely with product and delivery stakeholders to shape technical solutions from the outset What You'll Need Essential: 5+ years of commercial software engineering experience


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