Senior AI Engineer: Build & Deploy Interactive AI Agents

Oliver Bernard; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Oliver Bernard is seeking a Senior AI Engineer to own complex AI and research-engineering challenges, turning ambiguous questions into practical, high-impact solutions. You will shape data strategies and build robust systems that connect models to interactive software tasks.

The role emphasizes hands-on model fine-tuning, deep AI/ML fundamentals, and delivering end-to-end from idea to production, with a strong focus on Python and reliable engineering practices.

Qualifications

• Hands-on experience fine-tuning or post-training models, not just model APIs.
• Strong foundations in modern AI/ML including training, optimisation and evaluation.
• Experience with SFT, RL, RLHF or related post-training techniques.

Responsibilities

• Own challenging AI and research-engineering problems from idea to production.
• Develop approaches for creating, curating and improving training data for advanced models and AI agents.
• Build AI agent harnesses and systems connecting models to interactive software tasks.
• Prototype rapidly, validate through experiments, then productionise successful approaches.
• Take ownership of substantial technical projects over months, not just isolated features.

Skills

Fine-tuning models

AI/ML fundamentals

Post-training techniques

Python proficiency

Ownership of outcomes

Tools

Sandboxed environments

Job description

Oliver Bernard is seeking a Senior AI Engineer to own complex AI and research-engineering challenges, turning ambiguous questions into practical, high-impact solutions. You will shape data strategies and build robust systems that connect models to interactive software tasks.

The role emphasizes hands-on model fine-tuning, deep AI/ML fundamentals, and delivering end-to-end from idea to production, with a strong focus on Python and reliable engineering practices.