Hybrid ML Engineer: Production AI for High-Stakes Analysis

ExTrac; Greater London; Hybrid; GBP 70,000 - 100,000; Full time

Benefits offered by this job

Private Medical Health Insurance

Enhanced pension contributions

Parental leave

Workplace nursery scheme

Education budget £500/year

33 days leave

Flexible working, hybrid: 2 days/week

Job summary

ExTrac is seeking an ML Engineer to join its Machine Learning team in London. You will work with software engineering and product design to understand requirements, contribute to agentic systems, and help train and evaluate domain-specific models for analysts operating at the frontier of intelligence.

You will own well-defined components end-to-end and collaborate on technical decisions, taking projects from prototype through reliable production deployment in a hybrid London setting.

Qualifications

• 2+ years of professional software engineering experience, with experience owning well-defined features or components end-to-end within a larger system
• Technical excellence with production systems or hands-on ownership of well-defined components in early-stage role
• Hands-on experience with model serving (small models and LLMs), agent orchestration or retrieval systems
• Developing rigour in evaluation and benchmarking, with support from senior engineers
• Strong engineering fundamentals: write clean, maintainable code
• Comfort with a fast-paced environment and clear ownership
• Exposure to modern coding agents and effective workflows

Responsibilities

• Design systems that balance research velocity with product and production constraints
• Contribute to model selection, training approaches, evaluation and deployment for well-defined components
• Build and ship production-ready components, merging research rigor with pragmatic engineering
• Take projects from early exploration through to reliable deployment
• Apply high standards for architecture, code quality, evaluation and research practices

Skills

Machine learning

Software engineering

Model serving

Agent orchestration

Retrieval systems

Code quality

System design

Tools

Python

ML frameworks

Job description

ExTrac is seeking an ML Engineer to join its Machine Learning team in London. You will work with software engineering and product design to understand requirements, contribute to agentic systems, and help train and evaluate domain-specific models for analysts operating at the frontier of intelligence.

You will own well-defined components end-to-end and collaborate on technical decisions, taking projects from prototype through reliable production deployment in a hybrid London setting.