Senior Estimator

Ajax Building Company

Tampa (FL)

On-site

USD 110,000 - 160,000

Full time

14 days+

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Benefits offered by this job

Medical Insurance

Dental Insurance

Vision Insurance

401(k) retirement plan

Life & AD&D Insurance

Disability Insurance

Paid time off

Paid Holidays

Employee Stock Purchase Plan

Identity Theft Protection

Pet Insurance

Employee Assistance Program

Job summary

Ajax Building Company in Tampa, FL seeks an experienced Senior Estimator to lead bottom-up cost estimates for complex commercial construction projects. You will develop quantities from drawings, analyze data, and own the accuracy of cost models.

You will mentor junior estimators, coordinate with project teams, and support preconstruction through change orders and cost tracking. A bachelor’s in construction management or related field and 7–10+ years estimating required.

Qualifications

Bachelor's degree in Construction Management, Engineering, or a related field (or equivalent technical training).
7-10+ years of construction estimating experience
Strong experience developing detailed, bottom-up estimates required
Deep understanding of construction methods, sequencing, and cost drivers across multiple CSI divisions
Ability to read and interpret complex drawings and specifications

Responsibilities

Lead the development of complete, bottom-up estimates for assigned projects
Perform detailed quantity takeoffs and build estimates based on project documents and cost data
Analyze historical cost data and incorporate trends and lessons learned into estimates
Review drawings, specifications, and project documentation to ensure complete scope coverage
Maintain thorough, well-organized backup documentation for all estimate assumptions and quantities
Coordinate internally to validate scope, assumptions, and constructability considerations
Support estimate updates, revisions, and cost comparisons throughout the preconstruction process
Assist with cost tracking, change orders, and estimate reconciliation on awarded projects as needed
Mentor and support junior estimators as appropriate while remaining directly involved in estimate development
Perform additional assignments to support the Estimating team

Skills

Bottom-up estimates

Quantity takeoffs

Data analysis

Reading drawings

Communication

Education

Bachelor's degree in Construction Management

Equivalent technical training

Tools

On-Screen Takeoff

Bluebeam

DESTINI Estimator

Microsoft Excel

Job description

SUMMARY

Ajax Building Company is seeking an experienced Senior Estimator to lead the development of accurate, detailed cost estimates for complex commercial construction projects. This is a highly technical, hands‑on role focused on building complete estimates from the ground up-developing quantities based on drawings and project information.

The Senior Estimator reports to and is directly accountable to the Chief Estimator and plays a key role in delivering comprehensive, data‑driven cost models that support successful project pursuits.

This role is ideal for an experienced estimator who enjoys staying close to the work-diving into the details, building estimates personally, and taking full ownership of accuracy and outcomes within a focused, collaborative environment.

ESSENTIAL FUNCTIONS

Lead the development of complete, bottom‑up estimates for assigned projects
Perform detailed quantity takeoffs and build estimates based on project documents and company cost data
Analyze historical cost data and incorporate trends and lessons learned into estimates
Review drawings, specifications, and project documentation to ensure complete scope coverage
Maintain thorough, well‑organized backup documentation for all estimate assumptions and quantities
Coordinate internally to validate scope, assumptions, and constructability considerations
Support estimate updates, revisions, and cost comparisons throughout the preconstruction process
Assist with cost tracking, change orders, and estimate reconciliation on awarded projects as needed
Mentor and support junior estimators as appropriate while remaining directly involved in estimate development
Perform additional assignments to support the Estimating team

QUALIFICATIONS

Bachelor's degree in Construction Management, Engineering, or a related field (or equivalent technical training)
7-10+ years of construction estimating experience
Strong experience developing detailed, bottom‑up estimates required
Deep understanding of construction methods, sequencing, and cost drivers across multiple CSI divisions
Ability to read and interpret complex drawings and specifications

Technical Skills:

Proficiency in On‑Screen Takeoff (or similar), Microsoft Office Suite (Excel, Word, Outlook), Bluebeam and/or Adobe
Preferred: Experience with DESTINI Estimator (or similar), EarthWorks

Core Competencies:

Strong analytical and mathematical skills with the ability to build accurate, detailed estimates from project documents and cost data
High attention to detail and strong organizational skills
Ability to manage multiple priorities and meet deadlines in a fast‑paced environment
Strong verbal and written communication 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: