Estimator Jobs in Decatur, GA (NOW HIRING)

Job Description
SUMMARY
Ajax Building Company is seeking a skilled Estimator to develop accurate, detailed cost estimates for complex commercial construction projects. This is a highly technical role focused on building estimates from drawings and project information .
The Estimator reports to and is directly accountable to the Chief Estimator and partners closely with internal teams to translate project scope and design information into comprehensive, data-driven cost models.
This role is ideal for estimators who enjoy diving deep into the numbers-building detailed estimates and focusing on the technical side of construction pricing within a structured, collaborative environment.
ESSENTIAL FUNCTIONS

• Review drawings, specifications, and project information to develop complete, bottom-up estimates
• 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
• Validate estimate completeness and accuracy based on project scope and documentation provided by Preconstruction
• Maintain clear, organized backup documentation for all quantities, assumptions, and pricing inputs
• Coordinate internally with Preconstruction to clarify scope, assumptions, and design intent as needed
• Support estimate updates, revisions, and cost comparisons throughout the preconstruction process
• Assist with cost tracking and estimate reconciliation on awarded projects as needed
• Perform additional assignments to support the estimating team

QUALIFICATIONS

• Bachelor's degree in Construction Management, Civil Engineering, or a related field (or equivalent experience/technical training)
• 3-6+ years of construction estimating experience
• Experience developing detailed, bottom-up estimates strongly preferred
• Strong understanding of construction divisions, methods, materials, sequencing, and cost drivers
• Ability to read and interpret drawings and specifications
• Proficiency in On-Screen Takeoff (or similar), Bluebeam/Adobe, Microsoft Office Suite (Excel, Word, Outlook)
• Preferred: Experience with DESTINI Estimator (or similar), EarthWorks
• Strong analytical and mathematical skills with the ability to build accurate, detailed estimates from drawings 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

Technical Skills:
Core Competencies:
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 at stobuildinggroup.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.
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.