Who We Are

Our Team

Clint Redwine


Years at Magnum: 25
Years in Construction: 40
Certifications: Former Chair and Graduate of Leadership Broken Arrow, Former Executive Board Member of Associated Builders and Contractors of Oklahoma

As president of Magnum, Clint has been actively nurturing and growing the company since its inception 25 years ago. Clint proudly provides overall direction and administration of all company operations, ensuring the company functions and runs smoothly and client expectations are continually exceeded.

When not at work, Clint enjoys playing golf and working on classic cars.

Nick Redwine

Project Engineer

Years at Magnum: 1 
Years in Construction: 1
Certifications: Associate Constructor, American Institute of Constructors; OSHA 30 hour, Adult First Aid/CPR AED

Nick supports the project management team throughout the duration of projects by handling tasks including processing submittals, writing RFIs, assembling schedules and conducting weekly progress meetings. In addition, he supports the estimating team by communicating with subcontractors prior to bid dates, reviewing bids for adequate scope coverage, coordinating site visits and attending pre-bid conferences.


Outside of work, Nick enjoys playing the drums, golfing, skateboarding, hanging out with friends and family, and working on cars with his dad.

Nyles Buckingham

Vice President

Years at Magnum: 9 
Years in Construction: 19
Certifications: OSHA 30 Hour, LEED GA

Nyles provides general oversight for operations at Magnum Construction, including estimating and preparing customer budgets, establishing and maintaining relationships with design professionals, owners and subcontractors, and managing job order contracts. Nyles also assists with internal support, management, and conflict resolution, making him an invaluable asset to the company.

Outside of work, Nyles loves hanging out with his girls: Lyric, 9, Thea, 4, and Mom (age undisclosed). He spends his Sundays leading the band at the Downtown Church in Tulsa, Oklahoma, and in the summer he spends his weekends on the boat!

Pam Derichsweiler

Office Manager

Years at Magnum: 20 
Years in Construction: 20
Certifications: Construction Documents Technologist, CSI

Pam spends her time at Magnum optimizing operations and directing, coordinating and controlling office efforts in order to keep the company running and functioning smoothly.

In her free time, Pam enjoys reading, cooking, practicing yoga and spending time with her grandkids.

Leslie Gross

Administrative Support/Account Coordinator

Years at Magnum: 2
Years in Construction: 2

Leslie oversees all aspects of accounts payable and receivable. She also assists with processing subcontractor pay applications, payroll, and submitting weekly, quarterly and annual payroll taxes. 

When not at work, Leslie enjoys watching baseball, camping, spending time with her family, friends and grandkids and being involved with the Broken Arrow Elks Lodge.

Andréa Gullekson

Project Engineer

Years at Magnum: 9 
Years in Construction: 19
Certifications: OSHA 30, Forklift and Aerial Work Platform Operator

Andréa serves as liaison between all key stakeholders of construction projects, including owners, designers, and subcontractors. She also provides oversight and management of the primary factors driving every project: time, quality and cost. 

Andréa enjoys playing the piano and poker and loves spending time with her husband and step-sons, all while keeping up with her five pets: two great danes, a basset hound and two tabby cats.

Misti Neufeld

Contract Administrator/Administrative Assistant

Years at Magnum: 13 
Years in Construction: 13
Certifications: Versed Calendar, Policy and Procedure Guru

Misti’s work at Magnum includes preparing bid documents for proposal submission and ensuring all plans, specs and addendums are in order for bid day. In addition, Misti is in charge of reviewing contracts from owners and to subcontractors.

In her free time, Misti enjoys fishing, automobiles, softball and spending time with family.


Years at Magnum: 13


Equipment Manager
Years at Magnum: 24

Anthony Burchett

Years at Magnum: 4


Years at Magnum: 7


Years at Magnum: 16


Years at Magnum: 3

Greg Hannaford

Years at Magnum: 1


Years at Magnum: 25


Years at Magnum: 15


Years at Magnum: 1