JENNMAR encourages you to explore a wide range of job opportunities. We offer career development and the various tools you need to succeed within the company. 

Search our current job openings now. 

Search Jobs

Great 401K

At JENNMAR, we invest in our employees’ future. We will match up to 12% of your 401K plan contributions.


50% of our employees have been with us for 5 years plus, and 35% of our employees have been with us for 10 years or more.


Employee benefit premiums for a family medical plan are better than 80% of nationwide offerings for manufacturing industry.


Plus, many more cost-saving benefits to our employees and their families makes all the more reason to be part of a global company!

Visit our careers portal to find all of our current opportunities and apply for a job today!


At Frank Calandra Inc. and subsidiaries, we believe our greatest asset is our employees. We recruit and develop a talented and diverse group of individuals to continue to grow our business and contribute to our success. Our company is a leader in supplying high-quality products to the mining and tunneling and civil construction industries. Frank Calandra Inc. and its subsidiaries are highly respected all over the globe by their customers, suppliers, and the communities we serve.

We are searching for people that share our mission, values, and vision of safety, service, and innovation and are ready to connect with our teams in various industries and countries where we operate.

Looking to start your career?

JENNMAR’s opportunities range from free training of high school and technical college students and graduates to a variety of summer jobs, internships, and free certification programs. JENNMAR offers a world of opportunities that will expand your skills and capabilities ranging from professionals who are ready to take the next step in their careers by sharing their expert knowledge to the high school graduate eager to learn and every level employee in-between.

JENNMAR supports you.

So much of our modern world begins underground, in the form of the raw material that is molded into products that range from ordinary to exotic, are converted to energy which is at the very heart of every modern society, and rarely given a second thought. But, that raw material must first be extracted from the earth and it must be done safely. That’s where we come in. Our products and services allow men and women to safely mine the earth, to safely build tunnels and underground structures; in short, to safely unleash the creative potential within us all. While that may sound grandiose, it is absolutely true. It is never another mundane day at work for us. We are silent partners to the industries that make modern life possible.

Explore Our Products

JENNMAR makes a broad range of reliable, diverse, and complementary products. Browse our hundreds of products that make the mining and tunneling industries safer and more efficient.