Open Source LLM Tools Lead — Post-Training & Deployment

Methodfi; Greater London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A cutting-edge AI research company in Greater London seeks experts in AI development to join its team. The role involves developing open-source tools for community engagement and requires strong software engineering skills with a focus on Python and deep learning frameworks. Ideal candidates will have a graduate degree in a related field and a robust portfolio of contributions. The position offers top-tier compensation, health benefits, and an inclusive work environment.

Benefits

Top-tier compensation

Comprehensive medical, dental, vision insurance

Fully paid parental leave

Paid time off

Daily lunch and dinner provided

Qualifications

• Strong portfolio of open source contributions, particularly in LLM tooling.
• Deep understanding of post-training techniques (SFT, RLHF, DPO).
• Solid software engineering capabilities with experience designing library APIs.

Responsibilities

• Own the development of the deployment ecosystem for Reflection’s models.
• Build the RL and SFT tooling for external developers.
• Create Reflection-native libraries for performance or flexibility.

Skills

Open source contributions

Post-training techniques

Software engineering

Python

Deep learning frameworks

Education

Graduate degree in Computer Science or related discipline

Tools

PyTorch

Job description

A cutting-edge AI research company in Greater London seeks experts in AI development to join its team. The role involves developing open-source tools for community engagement and requires strong software engineering skills with a focus on Python and deep learning frameworks. Ideal candidates will have a graduate degree in a related field and a robust portfolio of contributions. The position offers top-tier compensation, health benefits, and an inclusive work environment.