First seen by Alion on Nov 9, 2026.
We are looking for a Senior Full-Stack Developer with strong TypeScript and Python skills to join a small cross-functional team building an Agentic AI platform. You will take features end to end, from the data model to the UI, across two product streams.
Project: a new Agentic AI platform for a leading UK energy and utilities provider, covering a platform that makes AI coding agents follow the company’s engineering standards and the deployment of an AI control product.
Responsibilities:
Design, build and maintain features end to end: APIs, data models, background jobs, UI, tests and deployment
Develop the standards pipeline that turns written standards into versioned rules with code examples and test fixtures
Build the requirements tool, its Miro integration, and the layer connecting standards, requirements and the coding-agent plugin
Implement model adapters (Azure OpenAI, AWS Bedrock), policy and detector logic, and budget caps
Deliver Entra single sign-on and roles, cost and outcome reporting, and client-specific features
Lead one area while contributing across both codebases
Collaborate closely with the front-end, DevOps and QA engineers
Maintain high code quality, write tests proactively, and review AI-generated code before committing
Requirements:
4+ years of experience shipping production web software
Strong skills in TypeScript and Python
Experience with PostgreSQL, REST APIs and Docker
Daily use of AI coding agents, with careful review of their output
Ability to switch between two codebases within the same week
At least 6 hours of overlap with UK working hours
Upper-Intermediate English or higher, with good written communication
Nice to have:
LLM application experience: prompt pipelines, structured outputs, evaluation
MCP servers, Claude Code or GitHub Copilot extensions
Enterprise identity (Entra, OIDC) or observability (OpenTelemetry)
What We Offer:
Transparent strategy and thoughtful management that keep everyone aligned
Space for personal growth and career development without limits
A culture of continuous learning: internal courses, workshops, and English classes twice a week
Skill up events where we share experience and stay on top of trends
Competitive perks: flexible schedule, a strong compensation package, support for professional certifications, and generous vacation policy
Team spirit that thrives through regular events, gatherings, and celebrations

