Senior Full Stack Engineer (Python & Typescript)

Remote, London·Added today (last checked 9 Nov)

Agency

io Associates

50 open roles

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Our summary

Salary: £500 - £525 a day
Work mode: Remote (London)
Contract: Contract role, outside IR35
Experience: Senior level

Skills

Requirements

What we're looking for

Strong Python development experience
FastAPI, API design, middleware, and asynchronous development patterns
Pydantic and schema validation
PostgreSQL database design, migrations, and query optimisation
React and TypeScript
Authentication and authorisation (SSO, JWT, RBAC)
Automated testing using pytest and JavaScript testing frameworks
Git/GitHub workflows, pull requests, and CI processes
Secure coding practices and security remediation
Hands-on experience with Claude Code and AI-assisted development workflows

The role

Senior Full Stack Engineer (Python & Typescript)

Location: Predominantly Remote
Start Date: November 2026
Duration: Until March/April 2027
Rate: £500 - £525 per day
IR35: Outside IR35

The Opportunity

We are supporting a client operating within a highly regulated environment and looking to engage an experienced contract engineer to join a critical delivery programme

This is an opportunity to join a fast-paced engineering team focused on delivering high-quality software solutions where hands-on development, AI-assisted engineering, and structured delivery practices are central to success.

What We're Looking For

Successful candidates will have experience working within heavily regulated or enterprise environments and be comfortable operating within formal governance frameworks, change controls, ticketing processes, and established development lifecycles.

You'll bring:

Proven experience delivering software solutions in regulated environments
Strong AI literacy and practical experience using AI-powered development tools
Experience building and delivering AI-enabled solutions
Hands-on experience with Claude Code in day-to-day engineering activities
Excellent communication skills and the ability to work effectively within distributed teams
A collaborative approach to code reviews, quality assurance, and secure development practices

Senior Full Stack Engineer

We're seeking an experienced Full Stack Engineer with a strong software engineering background who enjoys building robust, scalable solutions across both backend and frontend technologies.

Ideal Background

We're particularly interested in candidates from a strong software engineering background who are actively involved in designing, building, and delivering production code. These opportunities are best suited to engineers who enjoy creating features, solving business problems through software, and operating within high-performing development teams, rather than purely infrastructure or platform-focused professionals.

Interested in hearing more? Please get in touch with Rebecca Long on 0117 332 8100 / r.long @ ioassociates.co.uk

Disclaimer: Any remuneration stated in this advertisement is indicative and will be dependent on the successful candidate's experience, skills and qualifications. Final remuneration will be agreed with the successful candidate and will be subject to the terms of the contract.