Senior Machine Learning Engineer

This position is office-based, meaning regular in-person collaboration or use of office equipment is essential to maximize effectiveness for this team and position. Qualified applicants must live within commuting distance of our Glasgow office location and should expect to be in office a minimum of 4 days per week. At Sonos data helps us build a better business, a better product and ultimately helps us make happier customers. By understanding how our customers listen in their homes (and beyond), the Product Data team uses data to guide and influence the product direction and improve the customer experience. We are seeking a Senior Machine Learning Engineer to help pioneer ML innovation across Sonos' product and software ecosystem. This role will drive the design, development, and deployment of ML models that power data-driven decision-making, personalization, and customer experience intelligence. You will play a key role in building Sonos' next generation of predictive and data-driven capabilities - from intelligent experimentation systems and customer segmentation models to predictive marketing and proactive self-help experiences. As a senior contributor, you'll lead end-to-end ML initiatives, mentor junior engineers, and collaborate cross-functionally with Data Analysts, Data Engineers, and business teams in Software, Product, Marketing, and CX. What You'll Do

• Design, develop, and deploy scalable machine learning models across experimentation, personalization, and customer intelligence domains.
• Lead machine learning initiatives using product and customer data.
• Partner with Software, Product, Marketing, and CX teams to identify opportunities for machine learning driven innovation and measurable impact.
• Contribute to the design of machine learning infrastructure, pipelines, and deployment frameworks in collaboration with Data Engineering.
• Drive best practices in the development, deployment, and continuous improvement of machine learning solutions.
• Mentor and guide junior machine learning engineers.
• Translate business challenges into machine learning solutions that improve product experience and customer engagement.

• A degree in computer science, data science, statistics, or related field (or equivalent experience)
• 3+ years of experience in applied machine learning or data science.
• Strong programming skills in Python and proficiency with at least one major machine learning framework (e.g., TensorFlow, PyTorch, or equivalent).
• Experience building, deploying, and maintaining end-to-end machine learning workflows, from experimentation to production.
• Ability to adapt to new tools and technologies quickly, with a strong understanding of IoT data and machine learning infrastructure concepts.
• 2+ years of experience with distributed or stream processing frameworks (e.g., Apache Spark, Apache Flink)
• Proven ability to work cross-functionally with data, product, and business stakeholders.
• Excellent communication skill, with the ability to explain technical concepts clearly and effectively to diverse audiences.

Preferred Qualifications:

• Strong understanding of supervised and unsupervised learning, model evaluation, and A/B testing frameworks.
• Experience deploying models into production environments (AWS, GCP, or on-device).
• Familiarity with semantic data modeling and data governance best practices.

Research shows that candidates from underrepresented backgrounds often don't apply for roles if they don't meet all the criteria. If you don't have 100% of the skills listed, we strongly encourage you to apply if interested. Visa Sponsorship: Sonos is unable to sponsor or take over sponsorship of an employment visa for this role at this time. We ask that applicants be authorized to work for any UK employer, both now and in the future.