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# Full Stack Engineer

- **Company:** Harnham
- **Location:** London, UK
- **Experience:** Expert
- **Salary:** £80,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), JavaScript (Programming Language), Artificial Intelligence, Amazon Web Services, Software as a Service, Cloud Computing, Databases, Web Development, Django Web Framework, JQuery, Python (Programming Language), PostgreSQL, Node.Js, Cloud Services, Next.js, SQL Databases, TypeScript, ReactJS, Large Language Models, Backend, Fastapi, Kubernetes, Front End Software Development, Restful APIs, Terraform
- **Published:** October 28, 2026
- **Apply:** https://www.reed.co.uk/jobs/full-stack-engineer/57498948

## About the Role

* 5+ years' experience building and shipping production software
 * Strong commercial experience with React and TypeScript
 * Strong backend development experience using Python, ideally FastAPI or Django
 * Solid PostgreSQL, SQL and data modelling expertise
 * Experience building authentication, authorisation and permission-based systems
 * Knowledge of AWS, CI/CD pipelines and containerised applications
 * Previous involvement in architecture and technical decision-making
 * Exposure to AI-powered products, Next.js, Node.js, Kubernetes, Terraform or financial services environments would be advantageous, * Amazon Web Services (AWS)
 * Back-Related Terms
 * Cloud Services & Infrastructure
 * Communication Skills (Key)
 * Front-End Development
 * Java Programming (Basics)
 * JavaScript & jQuery
 * Node.js Development
 * React.js Development
 * TypeScript (Web Development)

## Description

This is a fantastic opportunity to join a newly established engineering team building an AI-powered SaaS platform from the ground up. You'll have genuine ownership across the full technology stack, work closely with senior leadership, and play a key role in shaping both the product and engineering culture from an early stage.
THE COMPANY

Our client is a fast-growing AI and technology business operating within the investment and financial services space. Backed by a well-established global organisation, they combine cutting-edge AI capabilities with enterprise-grade software used by leading investment firms. With a flat structure and high-performing team, this is an opportunity to make a visible impact while working on complex, real-world challenges.
THE ROLE

 * Build and deliver end-to-end product features across frontend, backend and cloud infrastructure
 * Develop modern applications using React, TypeScript, Python, PostgreSQL and AWS
 * Design scalable APIs, backend services and database architectures for enterprise-level products
 * Collaborate with AI teams to integrate LLM-powered features and intelligent workflows into the platform
 * Influence technical decisions, architecture and engineering best practices within a growing team
 * Work directly with senior stakeholders and contribute to the future direction of the product and platform