Welcome to Wallace!

we’re glad you’re here.

Welcome to Wallace!

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Welcome to Wallace!

We’re excited to have you join our team.

At Wallace, we believe great work starts with great people. Every project we take on is an opportunity to make lives better - for our clients, our communities and one another. That purpose guides how we work, how we collaborate and how we continue to grow together.

We are committed to striving for excellence in everything we do and to setting the standard in our industry through innovation, service and the way we support one another. The work we do matters, and the way we do it matters just as much.

You are joining a team of talented, driven and caring professionals who are passionate about making an impact. We value curiosity, teamwork, innovation and integrity, and we believe each person brings unique perspectives and strengths that help make our firm better.

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As you begin your journey here, know that your contributions matter. We encourage you to ask questions, build relationships and take advantage of the opportunities ahead. Whether you are in the field, in the office or connecting across disciplines and locations, you are an important part of One Wallace.

I also want you to know that my door is always open. At Wallace, we value connection and accessibility at every level of the organization. If you ever have questions, ideas or simply want to connect, I encourage you to reach out.

Thank you for choosing to be part of Wallace Design Collective. We look forward to the ideas, energy and perspective you bring to our team and to the future we will build together.

Darren Burns, PE, Principal President & Chief Executive Officer

Every career at Wallace begins with a shared mission: to make lives better through the work we do and the communities we serve.

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we are wallace

Our purpose is simple: make lives better.

It’s what drives us – and what we measure every action against. Whether it’s through a design decision, a client relationship, or an internal policy, we believe everything we do should improve the lives of our employees, their families, our clients and our communities.

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About us.

Wallace is a multi-disciplinary consulting firm specializing in civil and structural engineering, landscape architecture, surveying, land planning, roof consulting and special inspections. But we’re not just about what we do – we’re about how we do it.

We partner with our clients to solve complex challenges with technical skill, creativity and a practical optimism that moves projects forward. Our team is passionate about quality, collaboration and delivering results that stand the test of time.

With offices across the country, we operate as one, tapping the right expertise to create seamless, efficient and enjoyable project experiences. We’re big enough to handle the toughest projects, and small enough to give each client the attention they deserve.

Our Core Values.

We work hard to be the kind of firm people want to work with - and work for. Our culture runs on responsiveness, flexibility, quality and creativity.

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Our services aren’t just what we do - they’re an extension of who we are.

Structural Engineering | Designing, evaluating and restoring the bones of our built environment.

Civil Engineering | Creating and designing functional, sustainable sites and infrastructure to support our built environment and communities.

Landscape Architecture | Designing outdoor environments that connect people and place.

Land Surveying | Delivering the high-tech data and accuracy that every project starts with.

Land Planning | Navigating regulations to create inclusive, efficient master plans.

Roof Consulting and Special Inspections | Specialized expertise in IBC-mandated special inspections and roof evaluations.

Digital & Water Resilience (GIS & H&H) | Advanced mapping and hydrology to protect and empower communities.

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Markets we serve.

At Wallace, we believe the built environment has the power to make lives better. That belief drives the work we do across a diverse range of markets - creating places where people live, shop, learn, work, heal and gather.

Our experience spans a wide variety of sectors, including: • Aviation • Bridges • Civil + Cultural • Commercial • Education • Entertainment • Healthcare • Hospitality • Industrial

• Mixed-Use • Parking • Residential • Retail • Specialty • Sports + Recreation • Transportation • Vehicle + Vehicle Maintenance • Worship

Our leading markets by revenue include retail, education, commercial, industrial and healthcare - reflecting the depth of expertise, trusted partnerships and long-term relationships we’ve built across these sectors.

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Eight offices. One Wallace.

With eight offices across the country and licensure in all 50 states, we work together closely, sharing knowledge, experience and support. Our size allows us to offer meaningful resources and opportunity, while keeping our work rooted in the communities we serve.

Committed to our communities.

Being part of a community means showing up - not just once, but year after year. Our offices choose local organizations to support annually, focusing on causes that matter most to their teams and the places they call home.

Whether it’s helping feed families, supporting children and caregivers, or caring for animals, it’s one of the ways we stay connected to the people and places our work touches every day.

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508 hours of service Given by our team in 2025 to support community organizations across the places we live and work.

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Atlanta

• Year Established: 1999 (originally started as KSi Structural Engineers) • Leadership: Eric Blackmore, Kevin J. Smith and Kurt Swensson • Number of Employees: 20 • Services Provided Here: Structural Engineering • Community Outreach: Ronald McDonald House of Atlanta • Local Landmarks: Porsche North American Headquarters, Star Metals, Coda at Tech Square

Chouteau

• Year Established: 2003 (originally started as Bennett Surveying) • Leadership: Jordan Rodich and Wes Bennett • Number of Employees: 17 • Services Provided Here: Land Surveying

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Denver

• Year Established: 2004 • Leadership: Aaron Barnhart and Max Lehman • Number of Employees: 20 • Services Provided Here: Structural Engineering, Civil Engineering, Landscape Architecture • Community Outreach: Salvation Army • Local Landmarks: Denver Beer Co., RueterHess Reservoir Recreation Area

Kansas City

• Year Established: 1995 • Leadership: Doug Fredeen, James Granich, Michael Lancey and Darcey Schumacher • Number of Employees: 27 • Services Provided Here: Structural Engineering, Civil Engineering, Land Planning • Community Outreach: Big Brothers, Big Sisters Kansas City • Local Landmarks: A. Zahner Headquarters and North Dock, Boulevard Brewing Expansion

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Nashville

• Year Established: 2000 (originally started as KSi Structural Engineers) • Leadership: David Lower • Number of Employees: 6 • Services Provided Here: Structural Engineering • Community Outreach: Second Harvest Food Bank of Middle Tennessee • Local Landmarks: Schermerhorn Symphony Center, Stacks on Main

Northwest Arkansas

• Year Established: 2023 • Leadership: Andrew Kern and Alan Taylor • Number of Employees: 11 • Services Provided Here: Structural Engineering, Civil Engineering, Landscape Architecture • Community Outreach: The OMNI Center • Local Landmarks: Crystal Bridges Museum of American Art and the Momentary (by Howell & Vancuren prior to joining Wallace), Hotel Vin

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Oklahoma City

• Year Established: 2002 • Leadership: Patrick Altendorf, Kevin Bahner, Alec Bass, Jeremy Belitz, Chris Savage and Matt Schachle, • Number of Employees: 44 • Services Provided Here: Structural Engineering, Civil Engineering, Landscape Architecture, Land Surveying, Land Planning • Community Outreach: Homeless Alliance OKC • Local Landmarks: Continental Coliseum, Convergence, The Citizen

Tulsa

• Year Established: 1981 • Leadership: Danny Baldwin, Darren Burns, Matt Gebhardt, Justin Hartman, Ron Jantz, Carrie Johnson, Andrew Kern, Mondher Labbane, Dan Mazzei, Daniel McClain, Dan Popp, Scott Rodehaver, Jordan Rodich, Alan Taylor, Brad Thurman, Charles Wall and Nicole Watts • Number of Employees: 161 • Services Provided Here: Structural Engineering, Civil Engineering, Landscape Architecture, Land Surveying, Land Planning, Roof Consulting, Special Inspections, GIS • Community Outreach: Little Light House • Local Landmarks: Gilcrease Museum, 222 North Detroit, NOMA, Greenwood Rising 13

Our founder.

Tom Wallace is a unique blend of art and science. A gifted engineer with a passion for art and architecture, Tom worked with art professors while studying architectural engineering at Oklahoma State. He’s built geodesic domes and designed large structures. He’s a die-hard modern architecture apostle who values gray and white pipe steel above all else.

Tom used to say, “The best thing you can say about a structural engineer is that you’ve never heard of him,” as many structural engineers were known because of problems. Yet over time, he, his partners and our amazing Wallace staff built a company that’s nationally-recognized.

Tom’s original vision fueled a company that we feel is truly great. Our core values of responsiveness, flexibility, quality and creativity are a direct line to the way he believed professional services should be performed. He wouldn’t have it any other way.

And neither will we.

That’s it, the bio’s over. Back on your heads. #iykyk

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It started with a simple vision.

In early 1981, Tom Wallace was working for a Tulsa engineering firm when his brother-in-law approached him about a building he wanted to construct. The project provided Tom with an opportunity he’d been looking for – a start for his own company. Wallace decided to act on the chance and, on June 1, 1981, Wallace Engineering was born.

Wallace’s goals for the firm were simple – 1) grow larger than his previous firm, who was then the largest structural consultant in Tulsa, and 2) eventually have a computer on every engineer’s desk. He wanted to create a company that was great to work for, that consistently turned out high-quality documents and was on the cutting edge of technology.

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History teaches us that the great revolutions aren’t started by people who are utterly down and out, without hope and vision. They take place when people begin to live a little better - and when they see how much yet remains to be achieved.

Hubert H. Humphrey - April 2, 1966

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Here are some of the watershed moments in the history of Wallace Design Collective:

1981 • Wallace Engineering is founded on June 1, 1981 as a sole proprietorship.

• On the first day of business, Tom purchased an HP computer for $15,000.00. He was so proud of it that he drove it around town in his VW Beetle that was, presumably, worth much less.

• The first office was a 500 SF space in the Wright Building, located at Third and Cheyenne in downtown Tulsa. Tom’s first meeting with a client took place with the drawings spread on the floor because there weren’t tables yet.

• Wallace Engineering’s clients were primarily designing residential and mid-rise office projects. The company’s first project was Guaranty National Bank, a six-story building near 11th and Garnett.

• The building that Tom’s brother-in-law envisioned was never developed.

• Among Tom’s first employees were Brian Walker, a draftsman working toward an engineering degree, and Doug Brown.

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1983 • Wallace Engineering has five full-time and one part-time employee, and has outgrown its office. The company relocates to a 1,200 SF space in Center Park, near 21st and Columbia.

1985 • Wallace Engineering continues to grow and, again, outgrows its office. The company moves back to downtown Tulsa, moving into a 5,400 SF space in the Pierce Building at Third and Detroit.

• Walmart approaches BSW Architects, one of Wallace’s largest clients, about producing prototype documents for one of their store formats. BSW and Wallace begin developing CAD prototypes and a document design and production process for the program.

1987 • Wallace and the Walmart design team continue to develop prototypes, including one for a new 82,000 SF store, the largest ever developed by Walmart at the time. In addition, Wallace is the structural consultant for the team selected to expand American Airlines’ Hangar #1 at Tulsa International Airport. It was the largest single project contract the firm had been awarded to that point.

• Wallace Engineering adds 25 employees that year and incorporates in 1988.

1989 • Wallace Engineering has grown to 45 employees and has literally filled every nook of its office space it can find. A local architectural firm is downsizing and Wallace negotiates to trade office spaces with them. With 12” of snow on the ground (in April!), Wallace moves into a new 10,000 SF space in the 201 Executive Center at Fifth and Cheyenne.

• Wallace continues to develop a niche in prototypical building programs, adding clients such as Montgomery Ward and developing the first Supercenter program for Walmart.

1991 • Tom Wallace offers ownership to a group of employees for the first time and five new principals are named: Ken Basden, Doug Brown, Tom Gangel, Paul Rose and Brad Thurman.

• Wallace Engineering continues to grow, expanding to take the entire second floor and half of the third floor of 201 Executive Center.

• Wallace begins designing multiplex theaters for AMC Theaters. Wallace also begins collaborating on projects with GMH Corporation, a growing Kansas City firm owned by Mike Gray (formerly Tom Gangel’s boss at HNTB) and Steve Huey.

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• Wallace also begins working with Gene Phillips to explore civil engineering projects with the intent of developing a civil engineering practice.

1992 • Tom Hendrick, Brian Walker and Charley Wall are named as principals of Wallace Engineering.

open two branch offices. Effective January 1, 1995, Mike Gray and Steve Huey become employees of Wallace Engineering, dissolving GMH. The company is located in the Union Carbide Building near Ninth and Baltimore in downtown Kansas City.

• In March 1995, Wallace also opens a firm, Wallace/SC, in Irvine, California to work with clients doing work for AMC Theaters. The office is located near the Irvine Spectrum area.

• Wallace begins providing civil engineering services.

• The firm continues to grow, numbering 96 employees at the end of the year.

1996 • Mike Gray and Gene Phillips are named as principals.

1993

• Wallace’s staff drops to under 50 for the first time in seven years as the transition agreement with BSW ends.

• BSW decides to develop an in-house engineering staff, beginning with an MEP group. To help smooth out the process and minimize any dramatic impact, Wallace Engineering and BSW begin negotiations on a 30-month transition agreement.

• Work with theater clients continues to increase in the Kansas City office, and they soon outgrow their space. The office moves into the 11th floor of the Scarritt Building at Ninth and Grand in downtown Kansas City.

• Wallace’s growth begins to slow, with a total of 98 employees by year’s end.

1997 • Steve Huey is named as a principal of our firm.

1994 • Carrie Johnson is named as a principal of our firm.

1995 • To help stabilize the company, Wallace Engineering decides to 18

• Wallace begins a concerted effort to increase and diversify their client base. In addition, Walmart begins working with other architectural firms, who in turn hire Wallace Engineering as their structural consultant.

2001 • Wallace/SC relocates to Aliso Viejo, a developing community between Irvine and Laguna Beach.

• The company’s client base continues to grow and diversify in both the prototypical and traditional project markets. By year’s end, the firm employees a total of 139 people.

2002 • Wallace Engineering makes the decision to close Wallace/SC. • Wallace also begins renting office space in Oklahoma City for a field office to be used during construction visits.

2003 • Wallace Engineering begins to offer civil engineering services in the Kansas City office.

• Tom Wallace purchases an abandoned warehouse at the corner of Brady and Detroit in Tulsa’s Brady District, and plans to renovate it to house the Tulsa office.

2004 • Win Rice and Pryce Joyner move to Colorado and continue to work for Wallace Engineering out of their homes.

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2005 • Kevin Bahner moves to Oklahoma City to lead that office. Later that year, the Oklahoma City office relocates to the Confectionary Building in Bricktown.

• The Denver office moves into office space at I-25 and West Castleton Road.

2006 • Wallace Engineering’s Tulsa office relocates to 200 East Brady, occupying nearly 39,000 SF of space. The project begins to win a number of design awards and helps to act as a catalyst for the redevelopment of the Tulsa Arts District.

• On June 1, 2006, Wallace Engineering celebrates its 25th anniversary with a huge gathering in Tulsa.

2007 • Darren Burns, Ron Jantz, Mondher Labbane and Win Rice are named as principals of our firm, marking the first new ownership in ten years.

• The Denver office expands and relocates within the same building.

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2010

2017

• Like the rest of the country, Wallace Engineering continues to weather the 2008 economic crisis.

• Tom Hendrick is named our new President and Chief Executive Officer.

• Kevin Bahner and David Zuk are announced as new principals of our firm, effective January 1, 2011.

• Dan Mazzei and Sarah Appleton are named as principals.

2012

• Wallace makes the decision to close our Chicago office when Neal Benish takes another position.

• Justin Hartman, Andrew Kern, Sam Ray and Scott Rodehaver are named as principals of our firm.

• The Kansas City office relocates to the Crossroads Arts District.

2014

• The Oklahoma City office relocates to the Deep Deuce neighborhood.

• The Denver office relocates to the Meridian Business Center, currently the fastest growing area in Metropolitan Denver.

2018

• Sarah Appleton moves to Atlanta to lead our new office.

• Matt Schachle and James Granich are named as principals in our firm.

2015

2019

• Neal Benish is hired to help us establish and lead our Chicago office.

2016 • Darcey Schumacher and Doug Freeden are named as principals of our firm.

• The Atlanta office relocates to the King Plow Center.

• Civil engineering services are added to our Denver office.

• Kevin Bahner, Doug Brown, Doug Fredeen, Carrie Johnson, Andrew Kern, Scott Rodehaver and Charles Wall are named to the Board of Directors for 2019/2020. Carrie Johnson was elected as Chair and Charles Wall as Vice Chair.

2020 • COVID-19 strikes our globe and many employees begin working remotely in mid-March 2020.

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• We begin offering surveying services out of our Oklahoma offices.

2021 • Jordan Rodich is named a principal in our firm.

• Wallace opens our seventh office in Northwest Arkansas located in Rogers, Arkansas.

• On January 1, 2021, Howell & Vancuren joins Wallace, adding landscape architecture to the services we offer.

2024

• On June 1, 2021, we celebrate our 40th anniversary. In recognition, we announce our rebrand as Wallace Design Collective. The name was selected to honor our history while reflecting our growth as a multidisciplinary firm offering professional services beyond engineering.

2022 • Danny Baldwin, Alec Bass, Dan Popp and Alan Taylor are named as principals in our firm.

• Matt Gebhardt, Daniel McClain and Chris Savage are named as principals in our firm.

• Darren Burns is named our new President and Chief Executive Officer.

• Thor Wiggins is named our new Chief Operating Officer.

• David Thacker is named our new Chief Financial Officer.

2025

• On April 1, 2022, KSi Structural Engineers joins Wallace, adding 20+ talented professionals from offices in Atlanta and Nashville.

• Aaron Barnhart and Max Lehman are named as principals in our firm.

• The firm launches a new website and branding across marketing collateral.

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2026

• Nicole Watts is named a principal in our firm.

• Patrick Altendorf, Michael Lancey and Kevin Smith are named as principals in our firm.

• On February 1, 2023, Bennett Surveying joins Wallace, adding nearly 20 talented professionals to our firm. This teaming 22 22

brings more land surveying depth to our firm, allowing us to provide this service to clients across a broader geographical area.

and the story continues...

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your journey at wallace.

Where can a career at Wallace take you? We invest in future leaders by providing the tools and mentorship you need to sharpen your expertise and take ownership of your professional trajectory. From day one, you’ll step into a real role - taking on responsibility, contributing to projects that shape communities and building momentum in your career.

Path to Licensure: We provide the resources, study materials and mentorship needed to help you earn your PE, PLA or PLS. Your success is our success.

Continuous Learning: Through internal “Lunch & Learns,” technical seminars and project debriefs, the learning never stops.

Career Growth: We look for “grit and intelligence.” If you have the drive, we provide the ladder to move from Intern to Associate and beyond.

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Project Ownership: Lead projects from start to finish setting direction, guiding teams, managing clients and delivering work with confidence and autonomy.

Client Relationships: Build on the relationships you’ve earned, with the support to strengthen and grow longterm client partnerships.

Leadership Paths: Leadership isn’t one-size-fits-all.

Grow in ways that align with your strengths - technical, team, client, or strategic.

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I’ve been at Wallace for my entire career and have often been asked why I’ve never made a change. There’s more than one reason but it’s always boiled down to the fact that I’ve been able to find or create opportunities for growth and change for myself and others, inside and outside of Wallace. We want and strive to be better - that’s what fuels my fire everyday.

Darcey Schumacher, PE, SE, LEED AP BD+C Principal | Structural Engineer

Continued Growth: Experience is respected here.

Collaboration, shared knowledge, and diverse project exposure keep you learning and moving forward.

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Great work. Great people.

We believe top-notch work and a little fun go hand-inhand. We take our work seriously - but not ourselves.

We stay curious. We take pride in what we do. And we genuinely enjoy the process, because we believe trust, problem-solving and quality don’t have to come at the expense of a good time. Simply put: we think we have more fun doing our jobs than just about anyone else.

Our culture is built on collaboration, curiosity and community. From cross-office lunches and “Lunch & Learns” to volunteering in the neighborhoods where we live and work, we make time to connect, learn and give back. We celebrate milestones, share knowledge and support each other - because great work happens when people feel trusted, challenged and inspired. And yes, we laugh along the way.

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I feel incredibly fortunate to work alongside individuals who have become more like a second family to me. Their support, encouragement and camaraderie make coming to work each day a true joy.

Andrea Shoaf Administrative Professional 27

Memorable Moments at Wallace.

What makes a workplace unforgettable? For us, it’s the moments of care, trust and connection.

Memorable Moments at Wallace are personal stories – of flexibility for new parents, support through family challenges, continued learning and feeling welcomed across borders and backgrounds. They remind us why we do what we do – and who we do it with.

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“Wallace really listens. To its employees.

To what I had to say. It made me really feel like I had a voice here and could make a positive change.”

- Joe McKenzie

“I am proud to work for a company that applies one of its core values, flexibility, not only to its clients, but also its employees, allowing us to mesh our Wallace lives with our non-Wallace lives.”

- Purvi Patel

“So as a Wallace employee it really means a lot to see a company have such great community outreach, and more specifically, with an organization that is near and dear to my heart.” - Aaron Coonley

Explore more stories from our team and culture.

Watch at www.youtube.com/@wallacedesigncollective 29

Fantastic people.

Cool projects.

Fun culture.

We are Wallace.