Meet Our Team

Our Team Of Automotive Professionals

In the automotive repair process communication is vital.  Our team of advisers are trained to be great communicators.  First carefully listening to your concerns and drawing out information you may not even know you had.  Conveying that information to our technicians, who carefully access the problem,  then providing a solution with options back to you, and finally helping you decide what’s best for your unique situation.

Joel Sarantos

Joel Sarantos

ASE certified Service Advisor

ASE certified Master Automotive Technician.  

Joel is completely committed to finding solutions for you.  He is a certified by the National Institute for Automotive Service Excellence as a master technician and a service advisor.  This means that he is trained not only to fix cars, but to listen to you, and more importantly, to communicate your information to the technicians and then back to you.  Ill let him tell you more about himself.

“Hello my name is Joel Sarantos. I have been a service advisor at Advanced Auto Pros since August, 2007. I have always been interested in automobiles. Even as a young guy I was into racing remote controlled cars. My interest grew as I got older and I attended Front Range Community college, for the automotive technology program. I started out as a technician in the shop here. Now I have the privilege of working with the people of Greeley and helping them solve their automotive problems. Outside of the shop I like to spend time with my family and play guitar.”Joel definitely has a passion for getting problems solved. I’m proud to have him as a cornerstone of our organization.”

Highly qualified automotive technicians are scarce.

According to Wikipedia there are 255 million vehicles on the roads in the United States. 

According to the national institute for Automotive Service Excellence as of January 2016 there are only 72,701 Certified Master Automotive Technicians in the United States.  That’s one for every 3518 cars.   

If you are fortunate enough to find a Master certified L1 Advanced Level Specialist you are speaking with one of only 35,951 currently certified in the United States.  That’s one highly skilled technician for every 7092 vehicles in the United States. 

Unfortunately, we don’t have access to the data to tell you conclusively how many L1 Master certified technicians there are in Greeley Colorado.   What we can tell you is that we have L1 Master certified technicians, and Master certified technicians on our staff here at Advanced Auto Pros.  Allow me to introduce you to the men who will take care of your car. 


Marc DuBois

ASE certified Service Advisor

ASE certified Master Automotive Technician

Advanced L1 diagnostic certification

“My name is Marc DuBois, an ASE Master certified automotive technician. I am also certified by ASE as a Service Consultant, and L1 Advanced Engine Performance specialist. Advanced Auto Pros has been my work home for well over a decade. Rick hired me as a service advisor with no automotive knowledge, but gave me all the resources to succeed in the field. In two years’ I was ASE certified and started working in the back as an apprentice. A couple of years later I became a Master L1, and haven’t stopped learning automotive technology, since. I love learning about, and working on, automotive systems. Some things that help with learning about automotive technology are learning about electronics, programming, metal machining, physics, mathematics and chemistry. These are all hobbies of mine and during my free time they are all that I do. However, my wife and daughter are the loves of my life, and I spend every moment possible with them.”

I have never met anyone who has a passion for learning like Marc.  I am so proud to have Marc on the staff of Advanced Auto Pros.  I can assure you that with Marc on our team we will always remain on the cutting edge of the ever changing technology in the automotive industry. 







Jacob Maltby

ASE Master Certified Technician

Advanced L1 diagnostic certification

Associates Degree in Automotive Technology from Aims Community College

To sum up the kind of person Jacob is and why he is so important to Advanced Auto Pros I am going to share something he wrote in 2001. 

“It’s the year 2001; 1 have just graduated high school and like many in my directionless generation I think, “what now?” Do I pursue a career in computers and sit behind a desk? Do I pursue my admiration of working with my hands and loose my job to a man who will do it for half the pay? No.

Like many of the men in the world today, I wanted to work with my hands, but more importantly I wanted to work in a challenging career that tested me everyday. I am one of the most skilled, technical, scientific, and under appreciated men of our times; I am today’s automotive technician.

Today’s aspiring technician is faced with several dilemmas: first is education, second are monetary expenses, and third and most important is experience. Education is vital to a young tech, there is so much going on in a single vehicle it is impossible to gain that knowledge threw trial and error. It is very easy to damage and ruin integral components in today’s automobiles, costing you and your employer unnecessary payouts. Lets face it; these aren’t the cars you’re dad used to sup up in his driveway. These machines are some of the most technical human advances to date. Education is limited to a select few schools and in my case is a grossly under funded and under appreciated program. Technology is changing rapidly in the automotive industry, yet the men and women in administration, not only in schools but also in the field, do not give the proper support and attention needed to inspire today’s uninspired youth. I have found in my experience that men and women teaching today’s technicians are not willing to learn the new technologies associated with the vehicles of today. A Chevy Vega is not a Lexus ES 400 or even a Camry.

So I am learning the cut and dry basics in school, I can say that, but I need to get a job in the field. When I pick up a newspaper for career listings I find “must have own tools”. The tools required to work on the millions of makes and models of automobiles are not the tools you would find in your dad’s toolbox, they are an expensive investment. A tech relies on these tools to make a living; you cannot depend on some run of the mill wrench that only causes frustration and lost time. Good tools equal speed, which in turn equals money, so like always it takes money to make money but it is hard to start out in this business as a young tech, especially when you don’t know where to start. It just takes time.

The hardest obstacle to overcome when starting in this business is experience. It is impossible to know everything about every car. This trade is based on a commission pay, which starves the inexperienced tech right out of the field. Most of the time a young tech gets hired by some shad tree shop for minimal pay and ends up perpetuating that kind of persona further along in his career. This persona is not only bad for the tech; it is bad for the industry. It just conveys mechanics’ as dirty, filthy men out to rip people off. All the education in the world will not help today’s tech without hands on experience.

I feel today’s shop should embrace young technicians instead of making them jump threw hoops. This is a very technical trade that requires hard work and dedication. More programs should be available to young people to show them the advances in the automotive industry. I understand this is a business but it is also a passion of the men and women willing to endure the trials and tribulations of this complex industry. Today’s social views of technicians are wrong and need to be changed, but this can only be rectified by teaching young techs how to do it correctly. One day we will be appreciated, one day people will know the skills and dedication required to diagnose and repair their vehicle. I only hope it will be in my lifetime.”

We feel that the industry as a whole and certainly Advanced Auto Pros is better because of Jacob making the commitment to get his Associate’s degree in Automotive Technology and going on to becoming a Master Tech. 





.Stan Jantz

Stan Jantz

Shuttle Driver – Records Clerk

Hello! My name is Stan Jantz and I’m the shuttle driver for Advanced Auto Pros. I was born and raised on a dairy farm in Central Kansas. I came to Denver in 1969 and a few years later I moved to Greeley, where I owned and operated a cement contracting business for eight years. Upon selling the business, I began working for the Weld County government. After 30 years of employment, I retired from Weld County. I’m married and have three adult children all living in the Denver metro area. I cherish time spent with my family at our cabin in Estes Park. Driving the shuttle van for Advanced Auto Pros allows me the opportunity to meet interesting people and hear their stories.”