End-to-End ML Engineer: Build, Deploy, and Drive Impact

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

Job summary

Dex's trusted partner company in London is seeking a hands-on ML engineer to join a small data and ML team. You will design, ship, and diagnose models end-to-end, with responsibility for the entire surface from data pipelines to live serving.

You’ll work on rewards and personalization, build ML infrastructure, and measure impact in weeks, contributing directly to user engagement and revenue.

Qualifications

• Hands-on in production ML, shipping end-to-end models.
• Work across the full stack: data pipeline, model, and live serving.
• Strong grounding in statistics, including A/B testing, regression, and probability.

Responsibilities

• Design and ship production machine learning models that directly impact user engagement and company earnings.
• Translate complex mathematical business problems into concrete ML formulations.
• Build and optimize reward and payout structures, balancing user motivation with cost sustainability and advertiser value.
• Diagnose and troubleshoot underperforming reward campaigns, identifying root causes and implementing solutions.
• Contribute to the design and implementation of the core ML infrastructure, from training pipelines to live model serving.

Skills

End-to-end ML

Production ML

Data pipeline

A/B testing

Statistics

Job description

Dex's trusted partner company in London is seeking a hands-on ML engineer to join a small data and ML team. You will design, ship, and diagnose models end-to-end, with responsibility for the entire surface from data pipelines to live serving.

You’ll work on rewards and personalization, build ML infrastructure, and measure impact in weeks, contributing directly to user engagement and revenue.