Tower Holdings Group is a company integrated by ten independent entities in the United States of America, Ireland, and the United Arab Emirates committed to providing the highest quality in different services across the vast construction industry.

Our impeccable reputation was built on delivering both, large and small projects efficiently, on schedule and on-budget for more than 30 years.  Our experience as developers, general contractors and tradesmen allow us to proficiently manage all phases of each project on a macro and micro level to ensure our clients receive invaluable personalized attention.

We specialize in the following areas:
  • Development
  • General Contracting
  • Construction Management & Supervision
  • Value Engineering
  • Installation of Façades
  • Supply & Distribution of Aluminum Components for Façades
  • Subcontractor Bidding & Contract
  • Turnover Sequencing & Closeout Process



Kevin O’Sullivan. President & CEO

During his past 30 years in the construction and development industry, and prior to founding Tower Holdings Group, Kevin served as Founder and President of Time Square Construction and as Senior VP of a NY-based General Contracting firm leading prominent projects such as the Arthur Ashe Stadium, the Apple Flagship store, and renovations at Grand Central Station.

Kevin holds a degree in construction management from Tralee Technical College in Co. Kerry, Ireland.


Michael J. Giambra. Chief Financial Officer

Michael is a CPA licensed in NYS, with 30 years of experience in financial controls and due diligence with a successful record of large-scale private equity sales, and sweeping asset purchase, transactions in the NYC high-rise construction industry. In addition to various CFO positions, and financial consultant engagements in the NY/NJ construction arena, highlights of Michael’s professional career include Co-Founder, Managing Member, CFO of JM Barclay LLC, and Carrick Holding Company LLC as well as VP, Chief Accounting Officer at Dualstar Technologies Corp.

Iryna Suhnaska. Executive Vice President

Iryna provides business acumen and focuses on structuring, negotiating, and documenting all aspects of development and construction matters.

Prior to joining Tower Holdings Group, Iryna practiced as an attorney in Chicago, Illinois representing developers, contractors, and sureties on private and public projects.  A native of Ukraine, Iryna moved to Illinois at a young age where she later earned her bachelor’s and Juris Doctor degrees from the University of Illinois; she is admitted to the Illinois and New York Bar.

Fergal Conefrey.  Director, Tower Holdings Group

Fergal has been with Tower Holdings Group for over fifteen years. Originally a Project Manager, he was promoted to Senior Project Manager, and later to Head of Construction before assuming his current position as the Director of Construction within the Group’s companies. Prior to his time with the company, he served as a Project Executive for one of the largest contracting firms in New York. With over 20 years of experience in NYC Construction, he has worked both in the capacity of trade contractor, construction manager, and developer and has overseen the construction of over 1000 residential and hotel units and over 1 million square feet of high rise construction


Martin Dooley. Director of Operations, Alubuild USA & HDK Construction.

Martin brings more than 20 years of high-rise construction experience. As Director of Operations for Alubuild USA and HDK, he oversees the entire construction process from project set-up and on-site coordination up to its completion. Given his background as a Special Rigger, he brings invaluable and unique solutions to each project he is involved in. Martin attended Athlone Institute of Technology in West Meath, Ireland, and earned a certificate in engineering from the Department of Civil, Construction and Mineral Engineering.


Conor Lee. Director of Operations, Tower Holdings Ireland

Conor is an RICS Chartered Project Manager with 26 years of extensive construction management and development experience in Europe and the Middle East. With significant exposure in operational and business leadership, management of clients, local authorities, design and project delivery teams (including D&B/ EPC), across all sectors of the industry. Previous to joining Tower Holdings Group, Conor managed a construction business unit in the UAE which was part of the Interserve Plc group of companies.


Liam Ó Súilleabháin. Director of Operations, Al Abbar North America

Liam has worked exclusively in the façade and envelope sector for 30 years, primarily in UK and Middle East in every facet of the industry including design, production and project delivery. Liam has participated in or has led the delivery of major projects internationally including Vauxhall Cross MI6 HQ, Commercial Union and Nat West Tower façade refurbishment, Milton and Shire House in UK and Burj Al Arab Hotel, Emirates Towers, Dubai International Airport and The Burj Khalifa in Dubai as well as a number of major schemes in Saudi Arabia, Bahrain, Qatar and beyond.


John Weafer. Director of Operations, Trinity Engineering

John brings more than 26 years of experience working in the Electrical Industry. Having worked in Ireland, The Middle East Holland, Sweden and Denmark, John held Management roles since 2012 with the top three Electrical Engineering Companies operating out of Ireland: Jones Engineering Group, Mercury Engineering and Dornan Engineering, working overseas. Prior to his experience abroad, he worked on various Projects in Ireland with some of the largest Architects, M+E Consulting Engineering and Main Contractors and founded the successful electrical contracting company, Berkley Electrical LTD, where he served as Managing Director.



Building Business by Building Strong Relationships

We not only build structures.  We build long-lasting relationships based on trust and integrity earned over the last twenty years by consistently delivering high quality and compliant projects on-time, regardless of size, scope, budget, or complexity.



Taking a collaborative partnership approach with our clients and consultants, we offer an unprecedented suite of construction services which translates into quality service, quality work and thoughtful cost management.



With the strongest emphasis on safety, performance, quality and environmental sustainability, we strive to exceed our customer’s expectations at all times. Safety is not only part of our culture, it is our priority.



We have implemented a flat organization model that promotes the productivity, autonomy, and self-realization of our employees. Our culture of open communication and feedback among peers ensures all comments and feedback reach the staffs involved in decisions more quickly and therefore, to work more efficiently.

By maintaining a streamlined communication, we not only encourage our employees’ involvement in decision making, but we also recognize and value each one’s contribution to our companies’ success.

We aim to achieve a diverse, dynamic, high-performing team. If you would like to learn more about our current job openings, please visit us on LinkedIn or check our careers section.