Senior AI Engineer - Production-Ready Coding Agents

JetBrains; Greater London; Hybrid; GBP 90,000 - 160,000; Full time

Benefits offered by this job

Flexible work location

Remote work up to 30 days/year abroad

Medical insurance allowance

Professional development opportunities

Relocation support

Language classes

Lunch allowance

Mental health support

On-site gym or sports stipend

Job summary

United States Digital Space LLC is seeking a Staff/Senior AI Engineer to transform internal coding models into production-ready coding agents. You’ll handle model training, context engineering, tool use, and end-to-end product integration, not just research.

You’ll ship capabilities used by thousands of developers and help define the technical direction for future work. You will collaborate with product managers, software engineers, ML engineers, and researchers to build robust, scalable AI

Qualifications

• Strong software engineering fundamentals and a track record of shipping complex systems to production.
• Hands-on experience building LLM-powered products or AI systems.
• Experience evaluating model behavior and benchmarking for AI systems.
• Ability to work with ambiguity and drive direction over iterations.

Responsibilities

• Build production-ready coding agents and agentic workflows for real developer tasks inside the company products.
• Turn model capabilities into dependable product behavior via prompting, context engineering, or post-training methods.
• Design and improve the agent loop, including tool use and safeguards.
• Create evaluation suites and quality infrastructure for agent behavior and regression checks.
• Build feedback loops from real usage using logs and signals to improve data and performance.
• Collaborate with product managers, software engineers, ML engineers, and researchers to ship features end to end.
• Help define the technical direction for future work in ambiguous areas.

Skills

Shipping complex systems

LLM-powered products

Evaluation and benchmarking

Ambiguity tolerance

Communication skills

Job description

United States Digital Space LLC is seeking a Staff/Senior AI Engineer to transform internal coding models into production-ready coding agents. You’ll handle model training, context engineering, tool use, and end-to-end product integration, not just research.

You’ll ship capabilities used by thousands of developers and help define the technical direction for future work. You will collaborate with product managers, software engineers, ML engineers, and researchers to build robust, scalable AI