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Senior Full Stack Developer (Node & TypeScript) @ IO Associates

GBOnsiteFull-time
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About this role

Salary: £42,000 - 72,500 per year

Requirements

  • Strong commercial experience with Node.js, specifically TypeScript
  • Experience with Amazon Web Services
  • Experience with serverless products
  • Experience with document databases, ideally MongoDB
  • Experience mentoring engineers
  • Experience leading technical delivery in a build-and-run engineering model
  • Experience with structured on-call processes and incident management
  • Experience working in regulated industries, ideally financial services or FinTech
  • Ability to work confidently with clients and senior stakeholders

Responsibilities

  • Design, build, and operate reliable, scalable, testable, and maintainable software solutions
  • Build new functionality and products using TypeScript and Node.js
  • Help build and evolve our products

Technologies

  • Incident Management
  • MongoDB
  • Serverless
  • TypeScript
  • Web
  • NodeJS
  • JavaScript
  • Fullstack

More

We are a FinTech company seeking six capable, self-driven Senior Software Engineers for a 12-month contract, working remotely outside IR35. Our technology powers products used by ambitious UK fintechs, banks, financial advisers, and wealth firms, with close to a million investors relying on our platforms. The rate is £530–£580 per day; remuneration is indicative and will depend on the successful candidates experience, skills, and qualifications, with final terms agreed under the contract.

last updated 46 week of 2026

Skills

Node.jsTypeScriptAmazon Web Services (AWS)ServerlessMongoDBIncident ManagementMentoring

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