Senior Data Scientist - NESO

National Energy System Operator (NESO) recognises the potential of bright and talented individuals, and we encourage you to join us as Great Britain’s energy system undergoes an ambitious, exciting, and vital transformation. Together with industry, we are creating a cleaner, more sustainable energy future.

The Markets team at NESO takes responsibility for meeting the nation’s energy needs at the lowest cost, while ensuring the power system maintains the highest levels of resilience and security and paving the way for the decarbonisation. These three complex and often conflicting drivers (the “Energy Trilemma”) require a specialised blend of technical and economic analysis to identify the right road forward for NESO and for the nation.

As a data scientist modelling and quantifying power system risks, you will analyse operations data to grow our understanding of system behaviour in a changing world. You will use your conclusions to shape policy in the Electricity National Control Centre as well as NESO’s strategy functions. You’ll also educate, inform, advise, and influence the wider industry.

This role can be based from Wokingham, Warwick or Glasgow, and we continue to offer hybrid working from office and home. We are open to full time and part time applicants, as well as flexible working arrangements.

National Energy System Operator’s (NESO) mission is to facilitate the decarbonisation of Great Britain’s energy network and ensure the delivery of reliable, affordable, and clean electricity for consumers. We work with stakeholders across the whole energy industry to plan for future network needs, using a wider adoption of technology and changes in consumer behaviour, as well as ensuring we have the right markets, networks, and frameworks in place, to transform the way we operate tomorrow.

Join us, and let’s energise progress.

energy, our future, together.

In Autumn of 2024, the ESO transitioned to National Energy System Operator, or NESO for short. Previously denoted as the Future System Operator (or FSO), the new National Energy System Operator is the independent body responsible for planning Great Britain’s electricity and gas networks and operating the electricity system.

The ESO, including all of its existing roles, are now at the heart of the new National Energy System Operator. As NESO, we will build on our existing roles, capabilities, and ways of working significantly to create an organisation the energy system and its users’ need. Our new capabilities will enable us to look across vectors, including electricity, natural gas and hydrogen, and crucially consider the trade-offs between them.

The organisation is set up as a public corporation with its own Board of independent directors, with complete operational independence from government, the regulator and any and all commercial interest. As was the ESO, NESO will be licenced and regulated by Ofgem through price control agreements and obligated to identify optimal solutions to system operations and planning in the most sustainable, affordable and secure way for all.

• 
  
• Develop models to optimise and forecast frequency and energy security.
  
• Identify, analyse and report on potential operability issues to NESO Senior Management, Ofgem, BEIS, and other industry parties.
  
• Develop and communicate operational policy internally and externally.
  
• Design, develop and maintain new or existing operational tools, interfacing with key operational users or IT as required.
  
• Support market and codes development, design and implementation.
  
• Represent ESO in collaboration with industry and academia.
  
• Maintain up to date knowledge of ongoing operability issues and opportunities.
  

We’re forging the path, and we know we can’t do it alone. That’s why we need visionary minds like yours to join us on this transformative journey. In this case, we’re looking for someone who:

• 
  
• Has solid experience of data analysis, with the ability to develop models and tooling from scratch where needed. Experienced in at least one of MS Excel (including VBA), R, Python, or SQL.
  
• Strong communicator with excellent presentation and writing skills.
  
• Passionate about understanding the big picture and finding ways to improve.
  
• Ideally, experienced in statistical modelling, machine learning, power system engineering or GB energy market arrangements.
  

Research shows that some people may hesitate to apply unless they meet every requirement. At NESO, we believe potential comes in many forms and we’re committed to a fair, inclusive recruitment process where everyone can show their talents. We celebrate the difference people can bring into our organisation, and welcome and encourage applicants with diverse experiences and backgrounds to build a workforce that feels valued and respected and represents the communities we serve.

A competitive salary between £55,000 - £70,000pa – dependent on experience and capability.

As well as your base salary, you will receive a bonus based on company performance, 26 days annual leave as standard and a competitive contributory pension scheme where we will double match your contribution to a maximum company contribution of 12%.

As we work towards creating a cleaner, greener, and more affordable future for all, we also work towards creating a place for our teammates to belong, with professional and personal growth and positive well‑being.

• 
  
• Full support and career‑development resources to expand your skills, enhance your expertise, and maximise your potential along your career journey.
  
• A diverse and inclusive community of belonging, where teammates are empowered to bring ideas to the table.
  
• Generous Total Rewards Plan – comprising of health, finance and wealth, work/life balance, and career benefits.
  

This role closes on 2nd November 2025 at 23:59, however we encourage candidates to submit their application as early as possible and not wait until the published closing date as this can vary.

We work towards the highest standards in everything we do, including how we support, value and develop our people. Our aim is to encourage and support employees to thrive and be the best they can be. We celebrate the difference people can bring into our organisation, and welcome and encourage applicants with diverse experiences and backgrounds, and offer flexible and tailored support, at home and in the office.

We're committed to building a workforce that represents the communities we serve, and a working environment in which each individual feels valued, respected, fairly treated, and able to reach their full potential.

#LI-AW2 #LI-HYBRID