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National Energy System Operator (NESO) is driving the transformation of Great Britain’s energy system to make it cleaner, more secure and more affordable for consumers. Together with industry, we are planning and operating an energy system that can meet net zero goals while keeping the lights on at all times.

We are looking for a Senior Quantitative Analyst to join the SSEP Economic Modelling team within NESO’s Strategic Energy Planning division. The team builds and analyses whole-system scenarios to identify cost-effective, spatially informed energy pathways for Great Britain.

In this role, you’ll apply your skills to challenging, real-time problems and help deliver meaningful solutions. You will lead the development of analytical tools, data pipelines and user interfaces that turn complex quantitative data into clear, actionable insight for the team and organization.

This role can be based from Wokingham, Warwick or Glasgow and we continue to offer hybrid working from office and home.

• Lead the development and deployment of analytical tools and data pipelines that improve modelling and analysis activities and streamline processes across the team.
• Design, build and maintain data solutions for analysis, modelling, integration and presentation within NESO’s enterprise data and Azure cloud environments.
• Develop intuitive Power BI dashboards and other user interfaces that allow stakeholders to explore data, monitor key metrics and understand system performance.
• Work with relational and non-relational databases, applying sound data modelling practices and using appropriate management tools to ensure data quality, integrity and performance.
• Collaborate with colleagues to understand business questions and translate complex quantitative data into clear narratives and visualisations for diverse audiences, including non-technical stakeholders.
• Partner with internal teams to ensure data solutions are aligned with operational needs and are robust, scalable and well-documented.
• Contribute to continuous improvement by identifying opportunities to enhance existing tools, processes and data flows, and by sharing best practice across the team.
• Stay up to date with the latest innovations in data science, analytics, visualisation and cloud technologies, and bring new ideas into our tools, methods and ways of working.

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:

• Passionate about translating complex quantitative data into clear, compelling narratives tailored to different audiences, including senior stakeholders.
• Experience of process and/or tool development focused on data-based processes, ideally within complex operational or enterprise environments.
• Solid experience of using Python, SQL, and/or other common programming languages for developing data solutions for analysis, modelling, integration and presentation within enterprise data environments
• Proven experience creating intuitive user interfaces and dashboards for data analysis and decision support.
• Demonstrates excellent stakeholder engagement skills, capable of liaising effectively with internal teams and external partners.
• Can work both independently, taking initiative and ownership of deliverables, and collaboratively as a member of a multidisciplinary team.
• Demonstrates excellent stakeholder engagement skills, capable of liaising effectively with internal teams and external partners.

Essential: Degree in a relevant field such as Statistics, Computer Science, Maths, Physics, Data Science, or Engineering (or equivalent experience). Strong programming skills in modern analytical or statistical languages (Python, SQL …). Experience working with relational and non-relational databases, including using data models.

Desirable: Familiar with Azure cloud computing environments and comfortable working within modern cloud-based data and analytics platforms.

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 £48,374 - £52,500pa– 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.

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.

Our 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.

This role closes on 7th January 2026 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. Interviews will be held in January 2026.

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.