Senior Machine Learning Engineer

Harnham; Greater London; Hybrid; GBP 99,000 - 121,000; Full time

Benefits offered by this job

Salary up to £110,000

20% bonus

Hybrid working

Clear scope for technical ownership

Collaborative culture

Job summary

Harnham is seeking a Senior Machine Learning Engineer in London to take ownership of end-to-end machine learning delivery. The ideal candidate will play a key role in designing, building, and productionising machine learning solutions across various use cases while collaborating with data scientists and engineers. This position offers a salary of up to £110,000 plus a 20% bonus, with hybrid working (two days per week in-office), and the chance to work on impactful ML projects with a collaborative team.

Qualifications

• Strong commercial experience developing machine learning solutions in Python.
• Solid understanding of the Python ML ecosystem including libraries like NumPy and pandas.
• Experience building and deploying containerised services and APIs.

Responsibilities

• Building and deploying machine learning models into live production environments.
• Designing and maintaining MLOps workflows.
• Developing APIs and containerised services to support ML products.

Skills

Developing machine learning solutions in Python

Understanding of Python ML ecosystem

Building containerised services and APIs

SQL and data driven application development

Experience with cloud platforms

Familiarity with MLOps tooling

Job description

Senior Machine Learning Engineer

London, Hybrid (Twice Per Week)

Up to £110,000 + 20% Bonus

This is an opportunity to take ownership of end to end machine learning delivery in a role that blends technical depth with real world impact. You will work on production grade ML systems that directly improve operational and commercial outcomes, with the backing of a highly skilled, collaborative data team.

The Company

They are a specialist, data led organisation applying advanced analytics and machine learning to solve complex commercial problems. Their work spans the full lifecycle of data products, from discovery through to deployment, with a strong focus on building robust, scalable solutions. The environment is delivery focused, technically ambitious, and designed for people who want their work to make a measurable difference.

The Role

You will play a key role in designing, building, and productionising machine learning solutions across a range of use cases. Working closely with data scientists, data engineers, and delivery colleagues, you will help set technical standards and ensure solutions are production ready.

Key responsibilities include:

• Building and deploying machine learning models into live production environments
• Designing and maintaining MLOps workflows, including model lifecycle management
• Developing APIs and containerised services to support ML products
• Implementing DevOps best practices across development and production
• Collaborating cross functionally to align data, modelling, and business requirements

Your Skills and Experience

• Strong commercial experience developing machine learning solutions in Python
• Solid understanding of the Python ML ecosystem including libraries such as NumPy, pandas, and scikit learn, with exposure to PyTorch or TensorFlow
• Experience building and deploying containerised services and APIs
• Working knowledge of SQL and data driven application development
• Hands on experience with at least one major cloud platform such as AWS, GCP, or Azure
• Familiarity with MLOps tooling, workflow orchestration, or feature stores is highly beneficial

What They Offer

• Salary up to £110,000 plus a 20% bonus
• Hybrid working with two days per week in the London office
• Exposure to varied, high impact machine learning projects
• Clear scope for technical ownership and career progression
• A collaborative culture with strong investment in data and AI capability