Full Stack AI Engineer
- Contract
- United Kingdom
- Hybrid

Your recruiter
Luke Pentney
Founder & Senior Recruiter
About the job AI Full Stack Engineer | Financial Services | Asset Management & Investment Technology | London / EU Remote
📌 Production-grade Python backend engineering and proven hands-on experience orchestrating LLMs and autonomous agents.
💷 Competitive market day rate (Contract) + potential conversion to permanent.
🏠 Hybrid or EU Remote (London hub or remote across eligible EU jurisdictions, including Portugal).
👥 Federated AI Incubator delivering enterprise-grade agentic applications for international sales and marketing teams.
🏢 Global Tier-1 Active Investment Manager accelerating multi-billion-dollar regional asset growth through AI-powered automation.
💻 Python, LangChain, LangGraph, React, PostgreSQL / Aurora, AWS, Kubernetes, Terraform.
A premier global investment manager is scaling its central AI incubator to design and deploy agent-based, enterprise-ready workflow solutions for its international client-facing divisions. You will take end-to-end engineering ownership of autonomous agent orchestration, retrieval pipelines, and core service integration from technical design through to production.
This is a Contract opportunity offering high autonomy and a clear pathway toward permanent conversion as platforms expand.
As the successful candidate, you will:
System Architecture & Agent Delivery: Architect and deliver robust Python backend services and supervisor-style agent frameworks utilizing LangChain and LangGraph to automate complex institutional workflows.
Context Retrieval & Grounding: Build resilient data pipelines, vector search strategies, and prompt management workflows that eliminate hallucinations across massive enterprise document repositories.
Full Stack & UX Integration: Connect backend agent runtime platforms with secure enterprise APIs, PostgreSQL databases, and lightweight React front ends to ensure seamless business user interaction.
Cloud Native & Production Governance: Deploy microservices into firm-governed Kubernetes namespaces and AWS environments while applying rigorous infrastructure-as-code and observability standards.
Candidate Requirements
Required
Enterprise Python & Agent Engineering: Proven track record building enterprise-grade backend services in Python paired with practical production experience implementing LLM frameworks such as LangChain or LangGraph.
End-to-End Technical Ownership: Demonstrated capability to translate complex business problems into technical design documents, navigate existing codebases autonomously, and deliver production code without hands-on direction.
Full Stack Breadth: Working knowledge of modern JavaScript/TypeScript and React sufficient to wire UI components, connect REST/GraphQL gateways, and integrate core user workflows.
Enterprise & Production Background: Background delivering robust software within mature, product-managed environments where reliability, test coverage, and security are non-negotiable.
Eligibility & Availability: Based in the UK or an EU-eligible location (including Portugal) with availability to start within a one-month timeframe.
Nice to Have / Ideal
Infrastructure as Code & Cloud Delivery: Familiarity with Terraform, AWS, and Kubernetes deployment workflows to streamline team infrastructure provisioning.
Capital Markets Domain: Exposure to asset management, wealth distribution, or institutional financial services operational workflows.
An exceptional opportunity to deliver mission-critical AI agent platforms for a world-renowned investment management leader.
This vacancy is being managed by a third-party recruiter. By applying, you agree to your application being processed for this role.