Data Quality Engineer — LLM Post-Training & Evaluation

Reflection AI; Greater London; On-site; GBP 70,000 - 120,000; Full time

Benefits offered by this job

Top-tier compensation

Comprehensive medical benefits

Fully paid parental leave

Paid time off

Daily meals provided

Job summary

A leading AI company is seeking an engineer to oversee data quality for LLM post-training. The role includes designing automated QA methods, collaborating with researchers, and ensuring high standards for training data. The ideal candidate will have strong Python skills, experience with large datasets, and a solid understanding of data quality impacts. This position offers top-tier compensation, comprehensive health benefits, and supportive family leave policies.

Qualifications

• Strong engineering fundamentals with experience building data pipelines or QA systems.
• Detail-oriented with an analytical mindset for identifying data quality issues.
• Experience designing and validating automated quality checks.

Responsibilities

• Own upstream data quality for LLM post-training and evaluation.
• Partner closely with research teams to translate requirements into quality signals.
• Design and scale automated QA methods to measure data quality.

Skills

Proficiency in Python

Experience with large datasets

Knowledge of LLM training and evaluation

Excellent communication skills

Job description

A leading AI company is seeking an engineer to oversee data quality for LLM post-training. The role includes designing automated QA methods, collaborating with researchers, and ensuring high standards for training data. The ideal candidate will have strong Python skills, experience with large datasets, and a solid understanding of data quality impacts. This position offers top-tier compensation, comprehensive health benefits, and supportive family leave policies.