Principal AI Engineer - Frontier AI (London, Hybrid)

Oliver Bernard; Greater London; Híbrido; GBP 198.000 - 242.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Equity

Descripción de la vacante

Oliver Bernard is seeking a Principal AI Engineer to own end-to-end efforts across model training, post-training, RL, and evaluation in London. This hands-on IC role influences technical direction and requires deep production-ready AI experience.

Location is hybrid with roughly two days onsite and a base salary up to £220,000 plus meaningful equity. You'll lead major research-engineering initiatives and own ambiguous problems from experiment to production.

Formación

• Must have hands-on experience with training LLMs and evaluating them.
• Proven ability to design and improve training, post-training and RL pipelines.
• Strong production-ready software engineering fundamentals, preferably Python.
• Track record of solving difficult AI problems in production in a top-tier setting.

Responsabilidades

• Lead major AI and research-engineering initiatives end to end.
• Build and improve training, fine-tuning and post-training pipelines.
• Develop evaluation systems, agent harnesses and feedback loops.
• Own technically ambiguous problems from experimentation through to production.
• Set technical direction while remaining close to code and models.

Conocimientos

LLM training

Post-training pipelines

Reinforcement learning

Evaluation systems

Python

Software engineering

Educación

CS/ML/Math degree

Herramientas

Python

Descripción del empleo

Oliver Bernard is seeking a Principal AI Engineer to own end-to-end efforts across model training, post-training, RL, and evaluation in London. This hands-on IC role influences technical direction and requires deep production-ready AI experience.

Location is hybrid with roughly two days onsite and a base salary up to £220,000 plus meaningful equity. You'll lead major research-engineering initiatives and own ambiguous problems from experiment to production.