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Open nowPosted yesterday

Senior Estimator

STO Building Group445 open roles

Where
Atlanta, GA, United States
Work mode
On site
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Your applicationOpen nowSenior EstimatorSTO Building Group · Atlanta, GA, United States

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The clock on this job

Early applications get read.

12.8% of postings close within 7 days. Measured by our own scanner across the market. STO Building Group postings stay open a median of 6 days.

Share of postings closed within
  1. 2.2%1 day
  2. 4.5%3 days
  3. 12.8%7 days
  4. 20.6%14 days
  5. 35.6%30 days
  6. 58.4%60 days
This job: posted yesterday

STO Building Group median: 6 days open

The posting

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: 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

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.

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.

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