About Us


Automatic Door Doctors is a commercial door company, based in the Denver Metropolitan area, that repairs and installs automatic and manual doors. Our AAADM certified technicians have over twenty years of experience in the industry. Rated A+ by the BBB, we are small enough to know our customers by name and large enough to take care of you with our extensive inventory and technical expertise. Getting an automatic door installed has never been easier and more economical.

Our core values are integrity, quality, innovation, and communication. We strive to uphold these in everything we do.



Always do the right thing no matter what it costs our company. Treating customers how we would want to be treated is our number one priority.



Ensure our technicians are well trained and equipped to complete all jobs. Use attractive materials made to last.



Strive to find cost-effective solutions that a typical door company would miss. Offer creative and appealing solutions to every customer.



Keeping our customers, vendors, and technicians on the same page, so jobs can be completed quickly and in accord with our customers’ expectations. From start to finish you will be informed and guided through the process.

You will find information about hours, billing procedures, warranties, etc on our policy page.

At all times, you can reach someone at our office to answer questions or find solutions. We are extremely grateful to all of our customers who have given us an opportunity to serve them. We look forward to many more years of success.


Mike Sajdak
Operations Manager

Our Team

We look for employees who are conscientious and competent. Meet our team members.


Mike Sajdak / Operations Manager

Under Mike’s leadership, Automatic Door Doctors has thrived, driven by his commitment to recruiting the right talent and fostering a customer service ethos that mirrors the care he expects as a consumer. Away from the office, Mike dedicates his time to his family, stays active with running and biking, and gives back to his community.

Ruth McDevitt / Office Manager

Ruth brings over two decades of experience as a legal secretary to her role at ADD, where she has been a valued team member since April 2014. Her career includes 13 years of full-time work prior to becoming a mother and an additional 7 years in a part-time capacity, thoughtfully arranged so she could be present when her daughters returned from school each day. Family is at the center of Ruth’s life; she cherishes every moment spent with her loved ones and integrates family time into her daily routine.

Wendy Fry / Office Assistant

In September 2020, Wendy re-entered the workforce, joining Automatic Door Doctors as an office assistant. She thrives in her role, enjoying every interaction with customers. Wendy excels at connecting callers with the most suitable technician to meet their door-related needs, ensuring that each customer receives timely and effective solutions. Her background in nursing has endowed her with exceptional interpersonal and problem-solving skills, making her an invaluable asset to both our team and our clients.

Sarah Shires / Customer Relationship Manager

Sarah is committed to crafting innovative solutions and driving meaningful results. Her dedication shines through in her ability to develop and nurture client relationships, ensuring a smooth and engaging journey from start to finish. Sarah’s expertise in seamlessly integrating client needs with effective strategies makes every interaction not just a transaction, but a building block for a lasting partnership. Her proactive approach and meticulous attention to detail guarantee that each client receives a tailored experience that exceeds their expectations.


Mike Smith – Lead Technician

Mike Smith at work

Mike Smith embarked on his entrepreneurial journey right after college, opening his own car body repair shop. After several successful years, he shifted gears to work for local body shops, honing his skills and deepening his industry knowledge. Craving a new challenge, Mike seized an opportunity with Stanley Access Control in Denver, where he gained invaluable experience in commercial door repair and installation across the Denver area.

Fueled by his acquired expertise and a vision for superior service, Mike founded Automatic Door Doctors. His commitment to providing excellent customer service at fair prices quickly set the company apart, driving its growth by leaps and bounds. Today, Automatic Door Doctors is a testament to Mike’s dedication and entrepreneurial spirit.

Outside of work, Mike enjoys the thrill of dirt biking and cherishes quality time with his beautiful wife and son, balancing his professional achievements with a fulfilling personal life.

Adam Bruce – Door Technician

Adam Bruce, a skilled door technician, at work

Born and raised in the vibrant landscapes of Colorado, I have been immersed in the world of construction from a young age, an interest that has blossomed into a 14-year professional career. My expertise spans the breadth of the construction industry, bringing a wealth of knowledge and a hands-on approach to each project.

In addition to my construction experience, I devoted a decade to law enforcement, a role that honed my discipline and commitment to community service. Known among my peers as a jack of all trades, I bring a versatile skill set and a self-motivated drive to excel in various fields.

My attention to detail is meticulous, often tipping into perfectionism, a trait that ensures excellence in every endeavor. While I am passionate about my work, my heart truly lies with my family. Balancing professional pursuits with quality time at home is paramount for me, as those moments with loved ones are what I cherish most.

Brad Haskell – Door Technician

Brad Haskell ready for work

Brad combines his passion for the thrill of dirt bike riding with a pragmatic understanding of life’s necessities. An enthusiast of his leisure time, Brad recognizes the importance of a stable and fulfilling career. His choice to join Automatic Door Doctors was driven by the practical need to make a living, but it has turned into a surprisingly rewarding part of his life.

At Automatic Door Doctors, Brad has discovered not only a talent for addressing commercial door needs but also a genuine enjoyment in enhancing customer satisfaction. He finds joy in the daily interactions that not only solve problems but also build lasting relationships. The unexpected pleasure he takes in his work and the friendships he has cultivated with colleagues have enriched his professional experience, making every day rewarding.

Lance Fisher – Door Technician

Lance Fisher smiling in his workshop

Lance Fisher’s passion for travel began in high school with memorable trips to Russia, Finland, and Denmark, sparking a lifelong love for exploring new cultures. His adventurous spirit led him to join the Navy, where he traveled the globe for five years, with a particularly cherished experience being baptized in the Jordan River at age 20.

After his naval service, Lance channeled his entrepreneurial spirit into founding a successful home theater business in Washington, which he operated for 12 years. Today, he brings his extensive experience in electronics to his role at Automatic Door Doctors, specializing in access control and automatic door systems.

Beyond his professional life, Lance is devoted to his family—his wife and two sons are his joy. He treasures time spent playing Nerf guns, Frisbee, and ball with his boys. His hobbies include hiking, mountain biking, dancing, and enjoying music. He also loves spending time with his pets, solving problems, and being a reliable presence for those around him. An active member of his community, Lance consistently volunteers at his church, contributing to various initiatives.

Thomas Alexander – Door Technician

Thomas Alexander at work

Denver native Thomas Alexander has built a diverse and impressive career rooted in his hometown. An alumnus of the University of Denver, he excelled academically, earning two Bachelor’s degrees followed by a Master’s in Accounting. Not confined to one field, Thomas also excels as a commercial airline pilot and as a commercially licensed contractor.

In his contracting role, Thomas specializes in installing hollow metal doors, glass walls, and aluminum storefront assemblies throughout the Denver metro area, showcasing his precision and expertise. Outside of his professional endeavors, he is an avid outdoorsman who enjoys hiking, skiing, kayaking, and maintaining fitness through regular workouts.

Dedicated to giving back, Thomas commits at least 50 hours each year to various charitable activities, contributing positively to the community that has shaped him. His multifaceted career and commitment to service highlight his deep dedication to both his personal passions and professional pursuits.

Calvin Howard – Door Technician

Calvin Howard standing beside a door

From his first day on the job, Calvin Howard has exemplified exceptional dedication and a strong commitment to mastering his craft as a door technician. Known for his meticulous attention to quality, Calvin approaches every project with a keen desire to learn and improve, ensuring his work is not only done but done excellently.

Calvin is not only skilled but also deeply kind and considerate, always willing to go the extra mile to ensure that every aspect of a project is completed to the highest standards. His clients and colleagues alike appreciate his reliable, thorough approach and his unfailing courtesy.

Outside of work, Calvin cherishes the time he spends with his son, valuing every moment they get to spend together. Whether they’re exploring the outdoors or engaging in creative play, Calvin’s role as a father is central to his life, bringing him immense joy and fulfillment.

Chris Juarez – Door Technician

Chris Juarez

Chris Juarez is a highly skilled door technician renowned for his exceptional craftsmanship and attention to detail. He takes immense pride in his work, consistently delivering results that exceed expectations. Known for his dependability, Chris is deeply appreciative of the opportunities his career has afforded him, approaching each project with enthusiasm and commitment.

Personal Life

Beyond his professional life, Chris is a devoted father to four children. He treasures the time he spends with his family, engaging in activities that foster close bonds and create lasting memories. Chris’s dedication to both his professional and personal roles exemplifies his overall integrity and commitment to excellence.

David Mendoza – Door Technician

David Mendoza

David Mendoza is an indispensable member of our team, renowned for his steadfast commitment to integrity and excellence in every aspect of his work. His passion for commercial doors is matched only by his dedication to completing each project on time and to the highest standards.

David’s meticulous attention to detail ensures that every installation or repair is executed flawlessly, earning him respect and appreciation from both clients and colleagues. His enthusiasm for his work and his unwavering commitment to doing the right thing not only make him a reliable professional but also a role model within our team.

Michael Worsfold – Door Technician

Michael Worsfold

Michael Worsfold is a key asset to our team, recognized for his reliability, integrity, and strong work ethic. His expertise in commercial doors is extensive, driven by a continuous pursuit of knowledge and a commitment to staying at the forefront of industry advancements.

Michael consistently demonstrates a dedication to excellence, ensuring that each project not only meets but exceeds expectations. His proactive approach to learning and self-improvement makes him a standout professional in his field.

Outside of work, Michael finds joy and balance in life by spending quality time with his family. His ability to blend professional dedication with personal fulfillment exemplifies his well-rounded character.


Automatic Door Doctors is a commercial door company, based in the Denver Metropolitan area, that repairs and installs automatic and manual doors.

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