Senior Construction Superintendent - Mission Critical

JOB DESCRIPTION Ajax Building Company, part of the STO Building Group, is seeking a Senior Superintendent to lead the field execution of complex mission critical construction projects. This is a hands-on leadership role responsible for overall data center site operations, including managing field teams, coordinating subcontractors, and driving performance across safety, schedule, quality, and budget. Summary Ajax Building Company, part of the STO Building Group, is seeking a Senior Superintendent to lead the field execution of complex mission critical construction projects. This is a hands-on leadership role responsible for overall data center site operations, including managing field teams, coordinating subcontractors, and driving performance across safety, schedule, quality, and budget. In this role, you will take full ownership of day-to-day construction activities while ensuring seamless integration of critical building systems (MEP), trade coordination, and project sequencing. You will serve as the on-site leader, working closely with project management, clients, and trade partners to successfully deliver high-performance, technically complex projects. The Senior Superintendent reports to and is directly accountable to the General Superintendent. Essential Functions Lead and supervise all field operations to ensure the project is constructed in accordance with design, budget, and schedule. Oversee and coordinate all subcontractors, with a strong emphasis on MEP systems integration and sequencing in mission critical environments. Plan, organize, and direct daily jobsite activities including manpower, materials, logistics, and equipment. Drive overall site safety culture; enforce safety policies, document violations, and implement corrective actions in coordination with Safety leadership. Partner with Project Management to develop and maintain project schedules, phasing plans, and lookahead planning. Lead coordination of complex building systems (electrical, mechanical, plumbing, controls), ensuring proper installation, commissioning readiness, and turnover. Interface with owners, engineers, inspectors, and trade partners as the primary on-site point of contact. Interpret drawings and specifications; provide technical leadership and recommend construction means, methods, and sequencing strategies. Monitor productivity, quality, and subcontractor performance to meet contractual and operational goals. Review and approve field-related transactions including purchase requisitions, field change requests, and subcontractor work as applicable. Lead or oversee field engineering, layout, and coordination efforts. Support commissioning, startup, and turnover processes critical to mission critical project delivery. Maintain strong working relationships with project teams, subcontractors, and clients. Qualifications 10+ years of supervisory experience in commercial construction, with significant experience leading large, complex projects. Strong experience as a Lead or Senior Superintendent on mission critical / data center projects from start through commissioning. Deep understanding of MEP systems, coordination, and sequencing in high-performance environments. Proven ability to lead large field teams and manage multiple trades simultaneously. Bachelor’s degree in Construction Management, Civil Engineering, or related field preferred. Strong knowledge of construction practices, scheduling, and field operations. Excellent leadership, communication, and organizational skills. Ability to thrive in a fast-paced, high-demand jobsite environment. Physical Requirements Must have the ability to perform the following tasks: Coordinate the movements of eyes, hands, and fingers with full use of hands, arms and fingers. See well (either naturally or with correction). Climb and maintain balance on ladders and scaffolding. Stoop, kneel, crouch, crawl or work at any height. Lift and carry objects weighing up to 50 pounds and occasionally more. About Ajax Founded in 1958, Ajax Building Company is a leading commercial contractor delivering complex, high-impact projects across the Southeast. Our work spans healthcare, K–12, higher education, justice, municipal, mission critical, and other institutional markets—giving our teams the opportunity to build projects that truly impact the communities they serve. At Ajax, you’ll find a collaborative, team-oriented culture where your contributions are valued, backed by the strength and stability of STO Building Group’s $15B global platform. As we continue to grow, our employees take on meaningful responsibility, gain exposure to diverse and challenging work, and have clear paths for career advancement. Benefits The Company offers the following benefits for this position, subject to applicable eligibility requirements: Medical Insurance Dental Insurance Vision Insurance Health Savings Account Healthcare Flexible Spending Account Dependent Care Flexible Spending Account 401(k) retirement plan with employer match Life & AD&D Insurance Long-term Disability Insurance Short-term Disability insurance Critical Illness Insurance Accident Insurance Hospital Indemnity Insurance Home & Auto Insurance Family Support Pre-tax Paid Parking/Public Transportation Paid time off Time Away Benefits Paid Holidays Group Legal Employee Stock Purchase Plan Identity Theft Protection Pet Insurance Employee Assistance Program Eeo Statement We are an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, and other legally protected characteristics. The STO Building Group family of companies—Structure Tone, Structure Tone Southwest, Pavarini Construction Co., Pavarini McGovern, LF Driscoll, Govan Brown, Ajax Building Company, BCCI Construction, Layton Construction, Abbott Construction, and RC Andersen—includes over 4,000 employees located in offices throughout the US, Canada, UK, and Ireland. We provide a complete range of construction services, from site selection analysis, design constructability review and aesthetic enhancements to interior fit-outs, new building construction, and building infrastructure upgrades and modernization. Learn more about how we partner with our clients to imagine, execute, and realize their vision at stobuildinggroup.com. About Us What We Do: We build. From workplaces and hospitals to hotels and cultural centers. We build the amazing places that define communities. Our services span the full lifecycle of construction-starting with site evaluations and preconstruction through to commissioning, close-out, and beyond. The STO Building Group family of companies—Structure Tone, Structure Tone Southwest, Pavarini Construction Co., Pavarini McGovern, LF Driscoll, Govan Brown, Ajax Building Company, BCCI Construction, Layton Construction, Abbott Construction, and RC Andersen—includes over 4,000 employees located in offices throughout the US, Canada, UK, and Ireland. We provide a complete range of construction services, from site selection analysis, design constructability review and aesthetic enhancements to interior fit-outs, new building construction, and building infrastructure upgrades and modernization. Learn more about how we partner with our clients to imagine, execute, and realize their vision at stobuildinggroup.com. #J-18808-Ljbffr STO Building Group