Title:  Senior Tax Manager - NESO

About the role

National Energy System Operator’s (NESO) strength lies in our people. Together, we’re shaping the future where clean, affordable energy is accessible for all. Every day is an opportunity to make a real difference, accelerating the progress of sustainable GB energy, keeping people connected and society thriving as we create a brighter tomorrow.

Reporting to the Financial Controller in the Chief Financial Officer directorate, the Senior Tax Manager is responsible for establishing and leading the NESO Tax function. It supports the Financial Controller in managing, reporting and advising on the direct and indirect tax affairs of NESO. The role holder is responsible for ensuring NESO is tax compliant and has efficient and optimised tax arrangements in place.

This role can be based 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.

Key accountabilities

• Responsible for NESO’s tax operations, ensuring NESO’s Tax Policy is adhered to in respect of direct and indirect taxes and the Company meets its filing and payment obligations.
• Maintaining appropriate tax governance policies and processes to identify and minimise tax risk across all taxes, applying changes in legislation and outcomes of cases to ensure the business correctly accounts for corporate taxes.
• Establishing, setting the parameters for, and managing relationships with external tax provider(s).
• Managing outsourced contracts with external providers for day-to-day tax activities.
• Working closely with the external provider for tax, providing information and reviewing as required.
• Regularly reviewing performance of the contracts and ensuring that they are providing value for money and effective services.
• Supporting the transition of the tax function towards a fully digital function and readiness for Making Tax Digital for corporation tax.
• Fostering a good working relationship with HMRC and Ofgem for tax matters, managing and fulfilling enquiries from HMRC, defending positions where needed and representing NESO in relation to the shape of tax law and regulations.
• Supporting and acting as an advisor to the CFO function and the NESO business (particularly the Regulation team) on implications and advice regarding tax matters.
• Providing tax-specific information for the notes to the Annual Report and Accounts as required, to ensure accurate representation of the NESO’s tax position.
• Ensuring effective controls are set up and maintained around all aspects of the tax process, overseeing tax audits and implementing remedial actions as required to ensure compliance across NESO.

About you

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:

• Tax qualification, such as CTA or a finance qualification, such as ACA or ACCA.
• A strong background in UK tax, and strong knowledge and understanding of direct and indirect taxes including VAT, corporation tax and employment taxes
• Experience in a similar tax role.
• Experience in managing outsourced provider relationships.
• Contract management skills.
• Excellent stakeholder management and interpersonal skills.

About what you'll get

A competitive salary between £90,000 - £95,000pa – dependent on capability.

As well as your base salary, you will receive a car allowance, a bonus of up to 20% of your salary for stretch performance, private medical insurance, 28 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%.

You will also have access to a comprehensive benefits package tailored to support your well-being and professional success. From a competitive salary to flexible work arrangements, we promote your work-life balance. Enjoy fit for purpose wellbeing and lifestyle offerings, ongoing skill development aligned to our Purpose and Values and be part of a supportive community that values your individuality and where you can belong.

About us

National Energy System Operator (NESO) has a key role to play in tackling climate change by transitioning GB’s electricity system to net zero. We already operate the fastest decarbonising electricity system in the world, with an ambition for zero carbon power operation by 2030 when there is sufficient renewable generation. We are also providing advice to the Government on achieving a decarbonised power system by 2030.

So, join the energy transformation and help shape the future.

Your energy, our future, together.

About the National Energy System Operator (NESO)

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.  

NESO, 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.

The time to deliver is now. As part of our team, you won’t just be touching the lives of almost everyone in Great Britain – you’ll be shaping the way we use and consume energy for generations to come.

More information

This role closes on 17/07/2025 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.

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