Market Operator in Belfast

SONI is Northern Ireland's Transmission System Operator. We are responsible for ensuring that every home, business, school, hospital, factory and farm has power when and where they need it. Our focus is on safety, security and reliability, and we are committed to reducing Northern Ireland's reliance on fossil fuels while transforming the energy system to make decarbonisation a reality.

The Market Operations Function is responsible for operating and enhancing the European integrated Single Electricity Market across the island of Ireland. This includes the operation of the day-ahead and intraday markets and the Balancing Market Operations. Analysing market behaviour is a significant activity, given the scale of money being transacted, approximately €5bn per annum, and the size of datasets generated.

The Market Operator plays a key role in the delivery of the full range of work within the Market Operations team, which includes operating and monitoring the trading desk on a shift rota arrangement. Upon joining, a comprehensive 3-month training programme is provided to become licensed to operate the electricity market auctions as part of the trading desk team.

During electricity market auctions, the trading team has specific tasks that need to be completed within pre-determined timelines. The Market Operator needs to work closely with other team members to ensure appropriate support and backup is available within this fast-paced environment. The Market Operator works closely with service providers to operate and verify the results from the various wholesale markets and must maintain oversight of all market operations auction activities during the auctions.

Key Responsibilities

• Monitor key market activities such as market inputs, auctions, validations and publication of reports to ensure accuracy and timeliness.
• Perform key daily checks and ensure market system processes operate smoothly.
• Engage with internal and/or external stakeholders to address market operation queries.
• Publish market messages to external stakeholders as required.
• Represent EirGrid in incident committee meetings with European Market Operators as required.
• Co-ordinate and execute user acceptance testing of system releases and enhancements.
• Review and enhance processes, procedures, and checklists for continuous improvement.
• Provide standby availability cover 7 days per month from 7am to 7pm in case issues arise on the trading desk.

Knowledge, skills, and experience required

• Typically, 3-years' experience in a data and/or critical operational role.
• Strong numerical and analytical ability.
• Effective time management to achieve strict deadlines in a fast-paced environment.
• Strong attention to detail and intermediate level Excel skills.
• Excellent communication skills and confidence to work cross-functionally.
• Ability to work effectively within a team environment under time pressures.

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.
• Access professional development opportunities and clear career progression pathways.

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 16 February 2026. Submit your application by uploading your CV with a cover letter (in one document).

SONI is proud to be an equal opportunities employer. We value diversity and are committed to fostering an inclusive workplace where everyone can thrive.