Role Title: Senior Future Power System Engineer Reports to: Head of Future Power Systems Location:Belfast (Hybrid) About Us SONI (System Operator for Northern Ireland) is Northern Irelands Transmission System Operator (TSO). We manage the electricity grid to ensure that power can flow from where it is generated to where it is needed. We are now transforming the power system for future generations. Be part of the change! Our focus is on safety, security and reliability. Our work environment is challenging, fast-moving, collaborative and team orientated. Our culture is driven by performance, knowledge and continual development. Our people are committed to reducing Northern Irelands reliance on fossil fuels and making decarbonisation a reality while providing a safe and reliable electricity supply in a way that secures the future for those who follow us. Our future has never looked more exciting. This is an incredible opportunity to be part of it. The world is ready for change. If you are too, join us. The Role The Future Power Systems function within the Networks & Innovation Directorate is responsible for power system capacity & flexibility planning, techno-economic studies and future operations planning. This role sits within the Future Operations team and involves technical dynamic stability and security modelling of the All-Island power system in partnership with EirGrid. The team are responsible for developing, managing and maintaining the models underpinning the All-Island Lookahead Security Assessment Tool (LSAT), and our evolving model and study capability as part of our Operational Policy Roadmap, key to ensuring real-time secure operation of the All-Island Power System. The team in collaboration with their EirGrid counterparts are also responsible for the delivery of the Operational Policy Roadmap. To ensure that Northern Ireland can manage up to 95% renewables at any point in time by 2030, the Operational Policy Roadmap lays a pathway: to ensure future dynamic stability, to manage reserves and ramping and changes to future operational policy. The team also lead out on introducing new tools to enhance our technical modelling and analysis so that we can introduce new technologies into the system such as new technical capabilities from Grid form technologies. Key Responsibilities Identifying future power system needs and possible solutions by carrying out power system analysis such as steady state load flow, voltage, short circuit and transient stability. Identifying challenges associated with operating a high-RES power system and investigating and developing solutions. Carryout out power system studies with a particular focus on the value offered in future interconnection; long duration energy storage and offshore projects and how they may enhance future system strength and dynamic stability. Using power system modelling software such as PSS/E, PowerFactory, DSA tools, or similar. Building and maintaining the power system dynamic model, ensuring the model accurately reflects the transient performance of the transmission system during contingency events Identifying and implementing efficiencies in existing processes and policies. Identifying and implementing efficiencies in our modelling processes, such as using coding to automate modelling inputs. As required, support the development of technical reports and statutory publications such as the Ten-Year Transmission Forecast Statement. Writing robust technical reports and communicating these clearly to internal and external stakeholders. Presenting model results both internally and externally. Building strong and effective relationships with key stakeholders such as NIE Networks, the Utility Regulator, relevant government departments and developers. Mentoring junior team members and contributing to a team culture that is solution focused. What Youll Need Joining SONI as a Senior Future Power System Engineer, youll need: Essential: University degree in engineering, or other relevant equivalent degree, with a minimum of 3 years power system or electricity industry experience. Technical knowledge of power systems, network system planning and transmission equipment. Knowledge of power system modelling and analysis techniques such as dynamic, harmonic and EMT power system analysis. Experience in power system analysis with power system modelling skills in software such as PSSE, PowerFactory, DSA tools, Matlab, or similar. Understanding of generation, demand and enabling technologies connecting to the power system Demonstrated knowledge of relevant regulations, licence, technical standards, codes and policies relating to transmission system and connections planning. Advanced problem solving and analysis skills. Excellent interpersonal skills and a proven ability to work effectively as part of a team. Advanced level Excel skills for data analysis. Excellent written and verbal communication skills. Desirable: Proven understanding/good technical knowledge of the Northern Irish power system. Python coding development. Understanding of National and European policy and operational modelling Knowledge of alternative power system modelling and analysis techniques. Proficiency in project management as part of a team. Applicants should note that based on the response, SONI may increase the shortlisting criteria. What You Will Get This is an opportunity to lead and contribute to the advancement of a critical component of the energy infrastructure. The rewards package includes a competitive salary commensurate with experience, eligibility for an annual performance related payment, private medical provision, competitive pension with employer matching arrangements, a variety of salary sacrifice schemes (e.g. pension, cycle to work and electric vehicle leasing) together with hybrid working arrangements (3 days office: 2 days working at home), flexible start and finish times, competitive holidays and complimentary car parking with electric charging point on site. If you are seeking a challenging and impactful role within the electricity sector, we invite you to apply. Submit your application by uploading your CV with a cover letter (in one document). Closing date for applications is 29/09/25. SONI is an equal opportunities employer. SONI IS NOT providing sponsorship for this role. Skills: Future Power Systems Electrical Engineering