Registration Controller (Single Electricity Market Operator - SEMO) in Lisburn

Contract: Permanent

Location: Belfast Hybrid (3 days in office, 2 days at home)

Who We Are

SEMO (Single Electricity Market Operator) is a joint venture between EirGrid plc and SONI Ltd, responsible for operating the all-island Single Electricity Market (SEM). We ensure the efficient, transparent and compliant operation of the wholesale electricity market, supporting a secure and sustainable energy future for everyone across the island of Ireland. At SONI, we are the people behind Northern Ireland's electricity grid. Every day, we work to ensure homes, businesses, schools, hospitals, factories and farms have the electricity they need, when they need it. Our focus is on safety, security and reliability. Our work environment is challenging, fast-moving, collaborative and team orientated. Our culture is driven by continual development, knowledge and teamwork.

We are now seeking a Controller to join our Registration Team within the Operations Directorate. This is an exciting opportunity to contribute to a critical function within SEMO while helping to drive process improvements and support the continued evolution of our operations.

Job Description

The opportunity is available in the Settlement, Stakeholder Engagement and Registration team. The role holder will work collaboratively across the Group, engaging effectively with key stakeholders, to bring about the change necessary to deliver on our strategic ambitions. The role holder is responsible for supporting the Registration business processes and managing day to day registration activities. The role also involves responding to queries and working with the other controllers on key deliverables.

Job Relationships

Reporting to the Head of Settlement, Stakeholder Engagement and Registration in the Operations Directorate supported by the Manager of Registration and Stakeholder Engagement.

Key Responsibilities

• Supports the Pre-Registration & Registration activities of participants from all markets (SEMO/SEMOpx/Capacity Market).
• Supports the manager in the coordination and management of queries regarding registration, prioritising solutions and making recommendations.
• Provides technical support to the registration team in relation to the registration business processes.
• Co-ordinates daily deliverables for the registration team working with teams from across the organisation.
• Identifies issues and proposes practical solutions, escalating complex issues to the Manager and Head of Function as appropriate.
• Represents registration on projects or parts of larger initiatives and works with others to ensure projects meet deadlines and overall objectives.
• Uses own initiative and knowledge to undertake complex analysis to troubleshoot operational issues and ensure that the right business solution is agreed and implemented.
• Approaches problem solving with an innovative mindset, being open to a wide range of technology solutions.
• The controller ensures the deliverables are met to a high quality, within timelines and customer focused. This also involves communicating and reporting to a high level both internally and externally.

Knowledge, Skills and Experience

• Relevant third level qualification, or 2+ years relevant experience, ideally in a regulated environment.
• Demonstrated ability to continuously improve the way we work, creating transparent and easy to understand materials for both technical and non-technical audiences to get buy in changes proposed.
• Excellent analysis, judgement and problem-solving skills along with a conclusive ability to make decisions and recommendations in a changing and dynamic environment.
• Excellent attention to detail.
• Exceptional ability to develop and provide innovative solutions to complex issues in a timely manner.
• Outstanding organisational skills, commercial awareness and a proven track record of delivery.
• Demonstrated quality orientation and attention to detail.
• Ability to work effectively as part of a team, flexible and able to use own initiative to develop and execute own projects whilst under minimal supervision.
• Proven experience in delivering process improvement, change management and the automation of routine tasks into operational businesses.
• Excellent communications skills including effective presentation skills and excellent report writing capability.
• Experience of establishing and maintaining effective relationships with internal and external stakeholders.
• A tenacity to drive excellence and quality in all aspects of their areas of responsibility in line with the company vision and strategy, identifying and embracing best practice.
• Demonstrates commitment to continuous professional development.

Why join us?

• Play a vital role in shaping sustainable energy projects that benefit communities and the environment.
• Enjoy a competitive salary, performance-related bonus, private medical cover, and pension matching.
• Benefit from flexible working arrangements, including hybrid options (3 days office / 2 days home).
• Enhanced holidays, maternity and paternity leave and wellbeing days.
• Benefit from our award-winning wellbeing programme, designed to support your physical and mental wellbeing.
• A one-off payment of up to £5,000 is available to support employees undergoing fertility treatment.
• Employees are entitled to two weeks' paid bereavement leave following a miscarriage, reflecting our commitment to supporting colleagues through significant life events with compassion and care.
• Access salary sacrifice schemes (such as cycle to work, EV scheme), free car parking, onsite EV charging and complimentary lunch.
• Access professional development opportunities and clear career progression pathways.
• We offer an inclusive culture that values diversity, supports flexible working and empowers you to grow.
• We know flexible working means different things to different people. Contact us if you would like to talk about how this role could work for you.

If you are seeking a challenging and impactful role within the energy sector, we would love to hear from you. Join us in shaping the future of SONI and delivering a cleaner and more secure energy future for everyone living in Northern Ireland.

Closing date for applications is 6 November 2026. SONI reserves the right to extend this deadline where necessary to maximise the applicant pool. Submit your application by uploading your CV with a cover letter (in one document).

SONI is proud to be an equal opportunities employer. We are committed to an inclusive workplace where diverse perspectives are valued, and everyone can thrive. As a STEM organisation, we are continuing to strengthen gender diversity across our engineering and technology roles and welcome applications from women who want to build and apply their expertise to Northern Ireland's energy system.

We have a duty to prevent illegal working and applicants must demonstrate they have a legal right to work in the UK. SONI is not providing sponsorship for this vacancy.