Senior ML Engineer, Real-Time Ad Tech & Serving

Coding Black Females Ltd; Cambridge; Remote; GBP 90,000 - 140,000; Full time

Job summary

Roku in the UK is seeking a senior, hands-on ML engineer to design, train, and ship ML models for ad relevance and bid/yield optimization, and to build production ML infrastructure for real-time, low-latency serving.

You'll work across Spark, Python, and Java, taking models from research through deployment, collaborating with Praveen Krishnaiah’s Native Ads Modelling team and the wider Ad Performance ML group. Based in the UK (Manchester-anchored).

Qualifications

• Senior-level ML engineering experience, ideally with exposure to ad tech, recommendation, or auction systems.
• Strong grounding in ML fundamentals, feature engineering, and model evaluation.
• Experience with Spark, Python, and Java in production ML settings.
• Comfort with production ML infrastructure and real-time, low-latency serving requirements.

Responsibilities

• Design, train, and ship ML models for ad relevance and bid/yield optimization.
• Build and maintain production ML infrastructure for real-time, low-latency serving.
• Work across Spark, Python, and Java to move models from research to production.
• Apply sound feature engineering, validation, and evaluation practices throughout the modelling lifecycle.
• Diagnose production ML issues such as model drift or long-tail classification problems.
• Communicate technical trade-offs clearly to engineering and cross-functional partners.

Skills

Senior ML engineering

Ad tech experience

Model deployment

Real-time systems

Education

Bachelor's degree in CS/ML/related field

Tools

Spark

Python

Java

Job description

Roku in the UK is seeking a senior, hands-on ML engineer to design, train, and ship ML models for ad relevance and bid/yield optimization, and to build production ML infrastructure for real-time, low-latency serving.

You'll work across Spark, Python, and Java, taking models from research through deployment, collaborating with Praveen Krishnaiah’s Native Ads Modelling team and the wider Ad Performance ML group. Based in the UK (Manchester-anchored).