Senior Infrastructure Project Manager Jobs in Key West, FL

SUMMARY

Ajax Building Company, part of the STO Building Group, is seeking a motivated Assistant Project Manager to support the planning and execution of complex construction projects from preconstruction through closeout. This role offers a clear path to Project Manager, with hands-on exposure to all phases of project delivery while working alongside experienced PMs and field leaders. The APM will play an active role in driving day-to-day project operations, coordinating teams, managing documentation, and supporting cost and schedule controls-building the foundation needed to successfully step into a Project Manager role.

 
ESSENTIAL FUNCTIONS

• Distribute drawings, specifications, and design revisions to the Project Manager, Superintendent, and subcontractors, ensuring all parties are working from current documents.
• Assist in managing the RFI and submittal processes, including drafting, tracking, and coordinating responses with the design team and field.
• Maintain project logs, including RFIs, submittals, change orders, and meeting minutes, and ensure timely follow-up on outstanding items.
• Support day-to-day project operations by coordinating with field leadership, subcontractors, and vendors to keep work progressing per schedule.
• Assist with cost control efforts, including basic estimating, take-offs, and soliciting and leveling subcontractor/vendor quotes.
• Participate in project meetings, document and distribute meeting minutes, and track action items to completion.
• Support the development and implementation of project procedures and documentation standards.
• Assist in tracking project progress and reporting updates to the Project Manager.
• Support change management processes, including documentation and tracking of potential change events.

• Assist with project closeout, including punch list coordination, closeout documentation, and final deliverables.

QUALIFICATIONS

• 3+ years as Project Engineer or Assistant Project Manager in the construction management field.
• Bachelor's degree in Construction Management, Civil Engineering, or related field preferred, OR 4+ years of equivalent experience.
• Solid understanding of industry practices and trends and their impact on the corporation. 
• Strong interpersonal, communication, and organizational skills.

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: 

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 atstobuildinggroup.com. 
 

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.