CultureCallahan's unique family culture has fostered employee dedication and loyalty to our company.

Our CultureWe aspire to excellence


Our positive, high-energy and highly qualified employees aspire to be excellent every day and we believe we have created the environment that helps them achieve just that. We strive to build our employees professionally by providing them with the best in class systems and tools to do their job as the first piece of the puzzle.

We then focus on building our interpersonal relationships amongst our employees. Having strong interpersonal relationships allows for effective communication, less stress and anxiety and makes our operations efficient while building team camaraderie.


Culture Career Opportunities

Callahan's unique family culture has fostered employee dedication and loyalty to our company. Our success depends on attracting top talent. Individuals who are passionate about what they do, and those who are driven to learn, will excel and grow at Callahan. We are committed to a team-centered culture that supports every employee and incentivizes their growth and success. We are continuously seeking highly-qualified employees who are aligned with our mission and values to join our team.

AwardsOur reputable awards and recognitions are something to be proud of

Callahan awards for Boston Business Journal's 2022 Best Places to Work and The Boston Globe's 2021 Top Places to Work

We are in the business of building, and building the Callahan Team is our greatest achievement.

If you want to be a part of our motivated, skilled and engaged workforce come see what we are all about.

Our team is best in class when it comes to:
  • Safety
  • Quality Assurance and Quality Control
  • Training and Development
  • A passionate focus on the customer experience
  • Philanthropy

Our Mission
Building Relationships. Building Quality. Building Integrity.

Our Core Values
Our philosophy is that in order to be successful we must adhere to our core principles of integrity, transparency and service to others by constantly striving to create and maintain a culture of excellence among our employees.

Our Benefits
  • 401(k) Match Contributions and Profit Sharing
  • Health, Dental, and Vision Insurance
  • Employee Referral Program
  • Annual Bonus
  • Paid Time Off
Constructing Communities

Who We Are Callahan Constructing Communities

We also believe that in order to work successfully in a community, we must first become a true partner. Constructing Communities is our community partnership blueprint and reflects our core principles of integrity, quality, service, customer satisfaction and outstanding project management.

The Constructing Communities program reflects the family culture of Callahan and strives to support the local economy and workforce, inspire and mentor young people poised to become the next great engineer, architect, or builder, and serve as a positive partner for the local community during and long after construction is complete.

For Callahan, each project is an opportunity to inspire the next generation of engineers, architects, and builders to provide them with invaluable real world experience. Callahan is committed to working with local K-12 schools and vocational and technical schools to provide students with a real world STEM classroom through job shadowing and on-site tours. While touring the job sites, students will not only learn about day to day operations of the construction industry, but we also connect their frameworks to the real world. This gives the students a connection and helps them develop their knowledge on how to maximize opportunities in the future. Students get to experience the various stages and phases of construction first-hand over the course of the school year.

Giving Back to the Community

At Callahan, we are committed to leaving our mark through meaningful contributions in the communities we serve. Each year our employees dedicate their time and skills to support local charitable organizations. We also strive to support the local economy, inspire young people and serve as a positive partner to our clients.

33 Foundation

American Ireland Funds

Beth Israel Deaconess Hospital

Boston Bruins Foundation

Boston Ireland Funds

Boston Scholar Athletes

Boys & Girls Club of Dorchester

Boys & Girls Club of Boston

Breakthrough Boston

Bridge Recovery Center

BSA Foundation

Cambridge Health Alliance

Cancer Can’t

Caritas Communities

Children of the Nations

Claddaugh Fund

Cradles to Crayons

D.O.V.E Inc.

Dana Farber

Durkin Foundation

East Somerville Main Streets

Falmouth High School

Falmouth Youth Hockey

Find the Cause

Friendship Works

Habitat for Humanity Greater Boston & South Shore

Heading Home

Home Base


Italian Home for Children


Lazarus House

Manet Community Health Center

MGH Transplant Center

MS Society

One Company Fund

Pan Mass Challenge

QCARE Quincy

Quincy School Community Partnership

Quincy Youth Hockey

Rental Housing Association

Rhett Syndrome

Rosie’s Place

Somerville Community Development -Society Equity Campaign

Somerville Homeless Coalition

South Shore YMCA

South Shore Health

Special Olympics – Rhode Island Support the Harbor

The Hope Lodge

Travis Roy Foundation


United Way

Waltham Partnership for the Youth

Write Boston

Let's build something together

Callahan is committed to building strong, long-lasting client relationships, and to consistently delivering solutions that exceed expectations. Contact us today about starting your next project.