• (317) 858-9970
  • contact@spencermep.com
Schedule a consultation

About Our Firm

responsive & quality MEP services since 2009

Your MEP designs should be correct, concise, cost effective, and meaningful.

Since Spencer Engineering was founded in 2009, our firm’s philosophy has been to provide owner-driven MEP designs in a timely, meaningful and cost effective way. This core belief drives our approach — from the first sketch to the final product. 

Full Mechanical, Electrical, Fire Alarm, and Plumbing Services.

At Spencer, we provide complete MEP engineering design services, and we take pride in providing our clients with innovative, creative and custom designs.

explore the industries we serve

At the core of our business: a versatile team of engineers who specialize in all the above disciplines.

This enables our team to complete even the most complicated design and engineering projects with ease.

Meet our team
schedule a consultation

Trust in your finished designs.

Our designs comply with all industry codes and standards, including but not limited to:

We believe engineering is most successful when high-level visions are married with real-world approaches to achieve the best, most economical solution. 

Innovation and discovery thrive when we simplify the complex — not by compromising quality, but by applying clear, common-sense approaches. Simplicity, in our view, reflects precision, not underachievement.

Our commitment to life safety and public protection is at the heart of our professional, ethical, and moral responsibility. But true engineering excellence comes from understanding the bigger picture — blending multiple disciplines to meet a project’s goals.

We believe academic strength in addition to natural talent and curiosity are essential for young engineers to grow and lead in an ever-evolving industry.

This belief system is why Don Spencer founded Spencer Engineering — to deliver meaningful, economical, and timely design solutions that adapt to our clients’ changing needs.

Explore the industries we serve

Experts across sectors.

We know each industry has unique needs.

Click your area of interest below to learn more about our experience in these areas. We also serve many additional industries, so if you have a need, please reach out.

Commercial & Specialized

projects completed
0 +

Discover how we help architects and contractors complete projects from clean rooms to entertainment centers and beyond.

PROJECT information

Veterinary Hospitals

projects completed
0 +

Discover how we help architects and contractors complete veterinary care projects from hospitals to animal management facilities.

veterinary information

Municipal
Projects

projects completed
0 +

Discover how we help architects and contractors complete municipal projects from schools to fire and police stations and more. 

municipal information

Multi-Family Housing

projects completed
0 +

Discover how we help architects and contractors complete multi-family housing projects from transitional housing to luxury apartments.

housing information

Making a local & global impact.

We’re proudly based in Indianapolis, Indiana, and have grown our local roots strong, serving communities and creating designs for iconic Indiana locations. 

Over the years, we’ve helped clients nationwide, and we’re ready to work with you, no matter how simple or complicated your project might be.

We’re registered in many states—and have the ability to consult in areas outside of where we are registered.

schedule a consultation

Meet Our Team

Donald E. Spencer, P.E.

President
Don graduated from Purdue University in 1992 with a BS in Construction Technology as well as an AAS in Architectural Technology. Having shifted gears after college, he decided to pursue and subsequently attained professional registration.

He worked for a small engineering firm in Indianapolis for 19 years and learned from his mentor in the industry – Marks Levy. He then founded Spencer Engineering in 2009. Professionally, he enjoys teaching and guiding young engineers as they navigate their careers.

Micah Cordray

Director of Business Development
Micah graduated from Purdue University in 2000 with a Bachelor’s of Science in Computer Graphics along with a minor in Organizational, Leadership and Supervision. Micah has been with the company since its start in 2009 and has also worked with Don since 2000.

While not at work he enjoys spending time with his family, camping with his son through BSA Scouts and watching his daughter play in the marching band at Fishers High School.

Brandon Pearl, EIT

Director of Engineering
Graduated from Purdue School of Engineering and Technology in Indianapolis with a Bachelor of Science in Energy Engineering with a minor in Business. Brandon has been with Spencer Engineering since 2015 and works as a Senior Design Engineer.

His main responsibilities would include project planning/conceptual design, project management and design support.

Justin Rude

Director of Operations
Graduated from Purdue School of Engineering and Technology in Indianapolis with a Bachelor of Science in Mechanical Engineering with a minor in Mathematics. Justin has been a team member of Spencer Engineering since 2018.

Justin specializes in heat load analysis on an array of projects from vet clinics to schools to maintenance facilities and everything in-between. Justin relishes the opportunity to tackle tough problems and come up with solutions that best meet the project’s needs.

Ryan Drehs

Director of Technical Development
Ryan graduated from Purdue University in 2017 with a Bachelor of Science in Biological Engineering with a focus in Pharmaceutical Process Design. Ryan has been with Spencer Engineering since 2018. In his free time, he enjoys attending concerts, looking at the sky through his telescope, and spending time with family and friends.

Michael Morris

MEP Design Engineer II
Michael graduated from Purdue University in 2020 with a Bachelor of Science in Mechanical Engineering Technology and a minor in Organizational Leadership. Michael has been a part of the Spencer Engineering team since February of 2021. Some of his responsibilities include designing and applying electrical, mechanical, and plumbing systems to projects based on client specifications and design guidelines. He loves being able to tackle the tough challenges that each project uniquely brings.

Jared Riddle

MEP Design Engineer II
Jared graduated from Bradley University in 2021 with a Bachelor of Science in Industrial Engineering and a minor in Management and Leadership. Jared joined the Spencer Engineering team shortly after graduation in May of 2021. Jared works mostly on retail projects but has dipped his toe in many different types of projects as well. Outside of work Jared enjoys playing disc golf, walking his dogs, using his smoker, and doing just about anything outside.

Eduardo Chacon Olozagaste, LEED

MEP Design Engineer II
Eduardo was born in Córdoba, Veracruz and has been a Hoosier for 20 years. Eduardo attended Ivy Tech Community College before transferring to IUPUI. Eduardo graduated from IUPUI’s Purdue School of Engineering and Technology with a Bachelor of Science in Mechanical Engineering. Eduardo had 4 years prior work experience as an architectural draftsman before joining the Spencer Engineering team.

Julian Karras

Special Projects Coordinator
Julian Karras is originally from Oxford, England, he studied Mechanical and Production Engineering at Shrewsbury College of Arts & Technology. A recent addition to Spencer Engineering, Julian brings 25 years of experience to the table, including engineering design, project management, 3D CAD design and people management skills. Julian has known Don since 2015 and has collaborated with him previously on several projects.

Steven Schoening

MEP Design Engineer II
Steven graduated from Danville High School with the intent to become an HVAC technician before deciding to join the Navy. He served as a Sonar Technician from 2011-2017. Steven decided to pursue an engineering degree after he separated from the Navy and graduated from the Purdue School of Engineering and Technology in Indianapolis in 2022 and began working for Spencer Engineering in September 2022 as a Design Engineer.

Barry Curtis

BIM Manager
Barry graduated from ITT Tech in 1986 with an ASS in Architectural Engineering. He entered the industry designing modular commercial buildings. In addition to 17 years designing commercial buildings, he spent two years working as a commercial code plan reviewer, several years as a detailer in the structural department of a national architectural firm, and two years as Director of Engineering at Miller Building Systems in Elkhart, IN.

Nathan Hyndman

MEP Design Engineer I
Nathan graduated from Purdue School of Engineering and Technology in Indianapolis with a Bachelor of Science in Mechanical Engineering and a minor in Mathematics in May 2023. He joined Spencer Engineering in August 2023.

In his free time, Nathan likes to watch sports, listen to music, and spend time with friends and family.

Kevin Morrow

MEP Design Engineer I
Kevin graduated from IUPUI with a BS in Mechanical Engineering, also with an AS in Business Administration from Ivy Tech. He has a background in utilities and energy engineering.

His professional interest in design and drafting are what brought him to Spencer Engineering.

When not working, he enjoys spending time with his family, working on art, and reading.

Isaac Smith

MEP Design Engineer I
Isaac graduated from Purdue University in 2024 with a Bachelor of science in Mechanical Engineering, and a minor in Mathematics. Isaac has been with Spencer Engineering since March 2025.

In his free time, He enjoys Hiking, Playing basketball, bodybuilding, and spending time with friends and Family.

Hank Spencer

Draftperson
Hank graduated from Brownsburg High School in 2023. He has been working for Spencer Engineering since January 2025 as a Draftsperson.

In his free time he enjoys playing basketball, likes cars, and enjoys spending time with family and friends.

Eryn Buehler

MEP Design Engineer I
Eryn graduated from Purdue University in Indianapolis with a Bachelor of Science in Mechanical Engineering and a minor in Mathematical Sciences in 2024. She brings over five years of experience working with a variety of CAD programs. During her studies, she held several project management roles in extracurricular organizations where she developed strong coordination, organization, and adaptability skills. Her passion for tackling complex problems and continuous learning led her to join Spencer Engineering.

Ryan Spees, EIT

MEP Design Engineer I
Ryan graduated from Purdue University in 2025 with a Bachelor in Science in Mechanical Engineering with Honors and a minor in Economics. Ryan has been with Spencer Engineering since the summer of 2023 as an engineering intern before becoming a full-time design engineer in May 2025 after graduation. In his free time, Ryan enjoys reading, watching films, playing cello, and sabre fencing.

Ikanke Inyang

BIM Support

Ethan Riber

MEP Design Engineer I
Ethan graduated from Purdue University in 2025 with a BS in Mechanical Engineering Technology. Originally from the Chicago suburbs, he has always been intrigued by the construction industry and enjoys learning about the behind-the-scenes processes that make projects come together. He joined the firm in August 2025, excited to apply his skills and continue learning from experienced mentors in the field. Ethan also enjoys working on his car, cooking, camping, hiking, fishing, mountain biking, snowboarding, and traveling.

McKenna Marlar

Design Engineer Intern
Graduated from Purdue School of Engineering McKenna is attending Purdue University and will graduate in December of 2025 with a Bachelor of Science in Mechanical Engineering. This is her second year as an intern at Spencer Engineering. While at Purdue, she has been a mentor for two years through the Women in Engineering Program. In her free time, McKenna enjoys reading, painting, spending time outside, and having cookouts with friends and family.

Nicholas Spry

Design Engineer Intern
Nicholas will graduate from Olivet Nazarene University in May 2026 with a BS in Engineering with an Electrical Concentration. During the school year, he works as an esports coach for his school. In his free time, he likes to play video games, watch football and basketball, take pictures, and hang out with friends and family.

Join our team.

We’re looking to expand our team with individuals who want to work in a dynamic, team-based environment.

explore our career opportunities

Hear from our clients.

We have worked with D Spencer Engineering on several building projects over an eight year period. They have provided mechanical engineering and drawing support for projects ranging from new restaurant construction to fire suppression systems. Their team of engineers and draftsmen are always professional and timely. We are currently working with them on a new project, and will likely use them again on any future project. I would highly recommend them.
Jim Dunbar Big Woods Restaurant Group
Hard Truth Distilling Co.
Quaff ON! Brewing Co.
Jim Dunbar
I have worked with Don Spencer and Spencer Engineering for 27 years and he is a stand up guy that does the right thing, takes responsibility when its appropriate, and tells it like it is. Spencer Engineering does all of our MEP work across the country and they complete their work with exceptional design solutions on time and with a high level of detail. We demand a lot out of their team, and they have stood up to the challenge every single time. We truly appreciate the work they do for MD Architects.
Rick RenschenMD Architects
Rick Renschen
I have worked with Spencer Engineering several times over the years. Being a civil engineering project manager and designer, it is key to communicate and pass along information to tie a project together between the civil world and MEP world. Don and his staff are responsive, accountable and provides a project with sound MEP design. I have enjoyed working with Spencer Engineering and look forward to collaborating on many more projects in the future.
Ryan LindleyBanning Engineering PC
Ryan Lindley
I have known Don Spencer before he started his own company from a single individual to a firm of 10-15 individuals in 10+ years! Don is a professional with high integrity, and communicates with his clients. I have worked with Don on a number of projects and know firsthand that he leaves the project with the design working properly. Existing and future clients will be satisfied with his team’s performance. Thanks for asking as it been a pleasure working with you over the years!
Jack J. Kibort, PEHydronic & Steam Equipment Co., Inc.
Jack J. Kibort, PE
I have often told my customers (the Owner) that no project can afford a perfect set of Construction Documents. That being said, every project discovers design obstacles. Without a doubt, your team has been most responsive in working with us and the contractors to resolve issues promptly and affordably. You have assembled a talented group of design professionals for which you should be proud. Thanks for asking as it been a pleasure working with you over the years!
Tom WalterPresident and CEO LINK Management, Inc.
Tom Walter
I have worked with Don for over 20 years in the Indianapolis market. His breadth of MEP project experience is unmatched. He and the team of engineers he has on staff are dedicated to designing the best system for his clients. He has always been easy to communicate with and work with over the years. I look forward to working with him and his team at D Spencer Engineering! Without a doubt, your team has been most responsive in working with us and the contractors to resolve issues promptly and affordably. You have assembled a talented group of design professionals for which you should be proud. Thanks for asking as it been a pleasure working with you over the years!
Tom HallColby Equipment
Tom Hall

We’re here to get your projects done—and done right. ​

Contact us to learn more.

Call us.

We'll happily pick up the phone at
(317) 858-9970.

Schedule an exploration call.

Click here to a time that works for you.

Fill out the form below.

And we’ll get back to you soon.