Machine Learning Engineer - Tech Lead in Bristol

Join to apply for the Tech Lead Machine Learning Engineer role at Kaluza. Kaluza reimagines energy to bring net-zero within everyone’s reach. The Kaluza Platform enables energy utilities to unlock the full value of a radically changing energy system and propel us to a future where renewable energy is sustainable, affordable and accessible for all.

At Kaluza we embrace a flexible, hybrid work model that balances autonomy with the power of in-person connection. We’re focused on shaping thoughtful, team-driven approaches that support both business impact and individual well-being. We also prioritise meaningful company-wide gatherings like our annual conference and end-of-year celebrations, that bring us together to align, connect, and celebrate.

Location: London, Bristol, Edinburgh — Hybrid/work model as described above.

Salary: £80,000 - £100,000

Where you will be working: You’ll be part of the centralised Kaluza ML team and wider Data community where you’ll share knowledge, support other MLEs, Analysts and Product teams. You’ll be developing optimisation, ML algorithms and GenAI solutions across Kaluza.

What you will be doing:

• Develop ML and GenAI Solutions: Design and implement machine learning using Python, leveraging data technologies such as Databricks, Kafka, and the AWS cloud environment. Our architecture is based on microservices, allowing for dynamic deployment of new features.
• Productionise Algorithms: Deploy algorithms into production environments where they can be tested with customers and continuously improved. You’ll automate workflows, monitor performance, and maintain data science products using best practices for tooling, alerting, and version control (e.g., Git).
• Contribute to a Collaborative Data Science Culture: Share your knowledge and experience with the wider team. You’ll play a key role in fostering an ML / AI community that values openness, collaboration, and innovation.
• Identify Opportunities for Impact: Help uncover new opportunities where ML/AI can add value across our products and services. This includes asking the right questions, identifying high-impact areas, and contributing to the broader data strategy.

Qualifications:

• Proven experience leading teams in real-world ML / AI projects, with a strong understanding of core algorithms, data structures, and model performance evaluation.
• Proficiency in Python, including libraries such as Scikit-learn, Pandas, NumPy, and others commonly used in the ML ecosystem.
• Hands-on experience with GenAI APIs and tools, including deployment and integration of GenAI solutions into production systems.
• Strong analytical and problem-solving skills, with the ability to guide teams through complex challenges while keeping business impact in focus.
• Experience across the full ML lifecycle, including data preprocessing, model training, evaluation, deployment, and monitoring in production environments.
• Expertise with MLOps tools and practices (e.g., MLflow, SageMaker, Docker, CI/CD pipelines), and the ability to set standards and best practices for the team.
• Excellent communication and presentation skills, capable of clearly articulating technical results and strategic implications to both technical and non-technical stakeholders, including senior leadership.
• Demonstrated track record of stakeholder engagement, leading cross-functional collaboration with product, engineering, and business teams.
• Solid foundation in statistics, including techniques such as hypothesis testing, significance testing, and probability theory.
• Comfortable working in an agile environment, driving iterative development cycles and mentoring cross-functional teams.
• Some experience with Scala is a plus.

Why this role: We’re on a mission, we build together, we’re inclusive, we get it done, we communicate with purpose. Our values are at the heart of our culture and reflect what we care about as people and as a business.

From us you’ll get:

• Pension Scheme
• Discretionary Bonus Scheme
• Private Medical Insurance + Virtual GP
• Life Assurance
• Access to Furthr - a Climate Action app
• Free Mortgage Advice and Eye Tests
• Perks at Work - access to thousands of retail discounts
• 5% Flex Fund to spend on the benefits you want most
• 26 days holiday
• Flexible bank holidays, giving you an additional 8 days which you can choose to take whenever you like
• Progressive leave policies with no qualifying service periods, including 26 weeks full pay if you have a new addition to your family
• Dedicated personal learning and home office budgets
• Flexible working — we trust you to work in a way that suits your lifestyle
• And more…

We want the best people. We’re keen to meet people from all walks of life — our view is that the more inclusive we are, the better our work will be. If you’re excited about joining us and think you have some of what we’re looking for, we’d love to hear from you.

Seniority level: Mid-Senior level

Employment type: Full-time

Job function: Engineering and Information Technology

Industries: Technology, Information and Internet