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Keeley Companies
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Construction and technology services across infrastructure
Keeley Companies
Work Here?
Construction and technology services across infrastructure
Overview
Keeley Companies delivers construction and technology services through its subsidiaries—L. Keeley Construction, ADB Companies, ZeroDay Technology Solutions, and Keeley Development—for industrial, civil, building construction, infrastructure, and technology projects. Projects are executed through project-based contracts and long-term partnerships by coordinated teams across construction and tech disciplines, with a strong emphasis on safety and team growth. The company differentiates itself with a forward-thinking culture that empowers employees and prioritizes customer-centric partnerships to build loyal client relationships. Its goal is to provide reliable, on-time, and safe construction and technology solutions while growing through repeat business and strong partnerships.
About Keeley Companies
Industries
Consulting
Industrial & Manufacturing
Enterprise Software
Cybersecurity
Company Size
51-200
Company Stage
N/A
Total Funding
N/A
Headquarters
St. Louis, Missouri
Founded
1976
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Simplify's Take
What believers are saying
- Keeley broke ground on Mapletree’s 419,520-square-foot Joliet facility in August 2026.
- Keeley completed or advanced multiple 2026 healthcare and industrial projects, signaling broad backlog.
- Revenue from repeat clients like DHL and Mapletree strengthens referrals and future awards.
What critics are saying
- New Balance faces Keeley Electrical’s unpaid-work lawsuit after the March 2026 lien.
- Industrial demand concentration exposes Keeley if Joliet and Woodridge pipelines slow in 2026.
- Bill Keeley’s exit and Sean Keeley’s promotion concentrates leadership risk inside one family.
What makes Keeley Companies unique
- Keeley unified construction, wireless, technology, and development under one family platform.
- Sean Keeley became president in October 2025, preserving founder-driven execution.
- Keeley wins repeat work from Mapletree, DHL, and HELUKABEL across industrial projects.
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Benefits
Hybrid Work Options
Growth & Insights and Company News
6 month growth
↑ 13%1 year growth
↑ 13%2 year growth
↑ 13%“Maryville University recently announced its partnerships with Keeley Companies and RUNG for Women as just two of the many efforts to help build capacity and expansion for businesses in St. Louis,” said Davis.
Keeley Companies is Hiring for 2 Jobs on Simplify!
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About Keeley Companies
Industries
Consulting
Industrial & Manufacturing
Enterprise Software
Cybersecurity
Company Size
51-200
Company Stage
N/A
Total Funding
N/A
Headquarters
St. Louis, Missouri
Founded
1976
Keeley Companies is Hiring for 2 Jobs on Simplify!
Find jobs on Simplify and start your career today