Quantitative Developer, Fixed Income RAD

Millennium; Greater London; On-site; GBP 100,000 - 140,000; Full time

Job summary

Millennium seeks a senior engineer to prototype and deliver production-grade analytics applications with a focus on AI/LLM capabilities in Fixed Income. You will collaborate with PMs, traders, and risk teams to design data pipelines and interfaces that surface insights and streamline workflows.

You will work across Python data science stacks and a modern front-end stack (React/TypeScript) while leveraging Kubernetes and ArgoCD in a fast-paced, collaborative environment.

Qualifications

• Bachelor's degree in Computer Science or related field.
• 5+ years of development experience in production environments, preferably Python with data science stack.
• Experience in financial markets using math, modeling, or statistics.
• Experience with AI/LLM tools for development and AI solutions.
• Full stack experience with React+TypeScript/Deno and cloud tech (Kubernetes EKS/ArgoCD).
• Strong communication and ability to work independently in a fast-paced setting.
• High attention to detail and ownership.

Responsibilities

• Work directly with portfolio managers, traders, desks, and risk teams to prototype and deliver production-grade applications.
• Build and maintain data pipelines combining internal and market data into analytics formats (dashboards, APIs, Excel/notebook tools).
• Design and build data visualizations and web UIs (React/TypeScript) to surface trends and streamline workflows.
• Develop AI/LLM-powered capabilities into team applications (RAG, chat-data ingestion, MCP servers/tools).
• Partner with FI Management, Execution, and Risk to capture requirements and manage delivery.
• Maintain and improve deployed capabilities as new requirements arise.
• Integrate into FI-RAD's fast-moving culture with timely, production-grade solutions.

Skills

Python

Data pipelines

React

TypeScript

Deno

Kubernetes

ArgoCD

AI/LLM tools

Communication

Ownership

Education

Bachelor's degree in Computer Science

Tools

ArgoCD

Claude/Codex/Cursor

Job description

Millennium seeks a senior engineer to prototype and deliver production-grade analytics applications with a focus on AI/LLM capabilities in Fixed Income. You will collaborate with PMs, traders, and risk teams to design data pipelines and interfaces that surface insights and streamline workflows.

You will work across Python data science stacks and a modern front-end stack (React/TypeScript) while leveraging Kubernetes and ArgoCD in a fast-paced, collaborative environment.