Erica Buckley is an operations project manager with significant experience of managing software localisation teams. She is an advocate of service excellence, with a strong track record of leading effective operations teams in international business environments.
Erica is Field Service Coordinator for Deena Energy and has been with the business since 2017. She is responsible for field mobilisations, permits and visas and serves as the main point of contact for all of Deena Energy’s field projects.

Macdara MacCathmhaoil holds Bachelor’s and Master’s degrees in Engineering from UCD, as well as a Postgraduate Diploma in Computer Science from TCD. Mac began his career with GE Power where he fulfilled a number of mechanical and control systems field engineering positions on international projects. Following a successful field engineering career, Mac worked in senior management roles with a number of Irish-based companies servicing the Energy industry.

As one of the founders of Deena Energy, Mac is focused on growing the business and developing the optimum talent mix needed to best service new and existing customers. He also oversees the day-to-day operation of the business, along with introducing new technologies to support the on-going optimisation of business processes.

Sam McArdle has a BA BAI in Mechanical Engineering from Trinity College, Dublin and an MBA from Ulster University. His early career was spent working in the aeronautical industry and subsequently with GE as a Field Engineer working on power generation projects globally, both new-build and plant maintenance. Subsequently he moved into project engineering and commercial operations management for a number of international technical and engineering services organisations.
Sam is Field Service Director for Deena Energy and is one of the founders of the business. His focus is on key customer relationships, engineering management and the delivery of service excellence, while managing day-to-day operations.

Mary Sirr is an ACCA-qualified accountant and has spent her career in financial management roles since 2005. She is experienced in managing and advising international businesses in all areas of financial reporting and control. Her experience to date covers a range of international business services in the energy, healthcare and investment sectors.
Mary operates as Finance Manager where she heads up the accounting and reporting function. She has been with Deena Energy since it began operations in 2015.

Graduated from Trinity College Dublin with a BSc (Mgmt.) and is a Fellow of the Chartered Institute of Management Accountants (FMCA) and a Chartered Global Management Accountant (CGMA). He is an experienced operational and commercial finance executive, with a strong track record of leading people and executing change in large multinationals and fast-growing entrepreneurial organisations. Eoin has gained extensive international experience in the IT, Energy, Mining and Oil & Gas sectors encompassing R&D, Services, Supply Chain, Hi-Tech Manufacturing and Distribution & Logistics.

Mark Walsh holds a BSc (Hons) in Polymer Technology, is a CMI Chartered Manager, Certified Project Management Professional (PMP) and also holds post-grad. qualifications in leadership, business administration and employment law. He began his career in high-volume automotive design and manufacturing environments, working as a Development Engineer and Project Manager. Since 2003, Mark has been working with international engineering businesses managing recruitment, operations and HR functions.
Mark joined Deena Energy in 2022 as Operations Manager. As well as managing the day-to-day operations of the business, he is focused on deploying his extensive recruitment expertise to source & hire global talent, as well ensuring that Deena’s business processes continue to utilise the latest technologies.