At Abacus Solutions Group, we believe in building long-term partnerships rooted in trust, accountability, and shared purpose.
As a small business, we understand the value of loyalty to the mission, to our clients, and to the people who rely on us.
We don’t overpromise; we show up, we listen, and we follow through. Whether we’re supporting federal cybersecurity programs, staffing cleared talent, or helping agencies meet compliance goals, we approach every engagement with care and respect for the work at hand.
Integrity is our foundation. It guides how we make decisions, how we lead teams, and how we show up for our clients. We believe in doing right by people, even when it’s not the easy path.
Our team brings deep experience in government operations, and we take pride in being steady hands when things are complex or uncertain. From technical execution to policy support, we work alongside you—not above you—to move the mission forward.
Our faith shapes how we lead and how we serve. It keeps us grounded in humility, service, and a belief that real success is measured by the good we leave behind.
Credentials & Certifications
Every certification we hold supports one goal: delivering trustworthy, compliant, and mission-ready service.
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Service‑Disabled Veteran‑Owned Small Business
Certified by the Department of Veterans Affairs as a Service‑Disabled Veteran‑Owned Small Business, confirming majority ownership and control by a service‑disabled veteran and eligibility for federal SDVOSB set‑aside contracts.
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Veteran-Owned Small Business
Recognized as a Veteran‑Owned Small Business, reflecting ownership and leadership by U.S. military veterans and qualification for veteran‑focused federal contracting opportunities.
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Actively registered in the System for Award Management (SAM), meeting all requirements to contract directly with the U.S. federal government.
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Verified by the VA’s Center for Verification and Evaluation, confirming veteran ownership and control under the Vets First Verification Program.
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Computer Systems Design Services
Registered under NAICS 541512, supporting federal agencies with computer systems design, secure architectures, and integrated IT solutions.
Get to Know Us
At Abacus Solutions Group, our people are our greatest strength. They’re the reason we earn trust, deliver results, and show up with purpose every day. This team—made up of veterans, technical experts, and dedicated professionals—is the pride of our company and the foundation of our success. Their character, commitment, and care are what truly define who we are.
Buffy Koehn
CEO
I served as an Army Medical Service Corps officer for eight years and have a BA in psychology. Now, I strive to lead Abacus with compassion and mentorship through my experiences. I am a mother of three busy children that I love following around to their activities, that would prefer to have my office outside, enjoying nature.
Shane Pulver
Founder / COO
As a co-founder of Abacus, I am passionate about the work we do and how we serve our customers, employees, and future employees. When I am not working, I enjoy traveling with my family, and I am currently preparing to run the Boston Marathon.
Chris Kohen
Board of Advisors
Chris Koehn is a Fremont County native and founder of Second-61, a U.S. Department of Defense technology and security contractor. He co-founded Emergent Campus in Florence to bring tech jobs and economic opportunity to rural Colorado communities.
Jason Iloff
Corporate Program Manager
I am a leader who specializes in bringing order, clarity, and momentum to complex technical environments. For more than 20 years, I’ve led teams, modernized infrastructure, and delivered secure, scalable solutions across both federal and commercial organizations. I’m driven by problem‑solving, continuous improvement, and building strong relationships that make technology work better for the people who rely on it. My military background shaped my mission‑focused mindset, and I bring that same discipline and accountability to every role I take on.
McKenzie Miranda
Administrative Assistant
With a background in customer service and digital communications, I bring a people-centric, organized approach to everything I do. I’m passionate about creating a positive experience for our team and clients alike. Originally from NW Michigan, I now call SE Georgia home. Outside of work, you’ll find my toddler and me anywhere the sun’s rays hit! We enjoy walking nature trails, dipping in the ocean, or just hanging out in the yard every chance we get.
Nicole Decker
Director of Recruiting
I hold an MBA with a focus on leadership and am passionate about using my knowledge and skills to serve others. I thrive on helping others advance their careers through mentorship and guidance. As a former athlete and coach teamwork is at the core of my approach to achieving success. In my free time, I enjoy giving back to the community through volunteer work, spending time outdoors, and savoring a hot cup of french pressed coffee.
Jacoby Crayton
Senior Recruiter
I believe in aligning myself with God’s will for my life and working alongside those who share similar values. I approach everything with faith, wisdom, and hard work. Outside of work, I enjoy spending time with my beautiful wife and two kids and restoring classic model cars.
Brittany McCrea
Technical Recruiter
I thrive on connecting talented individuals with amazing opportunities. With an energetic personality and a genuine love for people, I believe that every great hire starts with understanding the unique story of each candidate. As a proud wife of a US Army veteran and mother of two adventurous boys, I understand the value of building strong, supportive communities — both in the workplace and at home. I love connecting with candidates, learning their unique stories, and helping them navigate their career paths with confidence. When I’m not scouting for top talent, you can find me either at my sewing machine, exploring the great outdoors with my family, or cooking up the latest Pinterest recipe I’ve found.
Rebekah Washington-Deberry
Technical Recruiter
I have a strong background in Technical Recruiting within the Department of Defense. When I shifted my career to Recruiting, I knew I had found what I was meant to do for a living. I feel fulfillment in helping candidates through the job hunt and hiring process, and I am passionate about building and maintaining strong relationships with my candidates. Outside of work, you will find me enjoying spending quality time with my husband, daughter, and our two Boston Terriers! I love to try new recipes, read books with my book club, and listen to podcasts on a nice walk outside.
Grace Bateman
Human Resources and Benefits Administrator
As Abacus Solutions Group's Human Resources and Benefits Administrator, I am passionate about making our company a place for you and your career to thrive! Our outstanding staff is the heart of our company and it is my job to support you every step along the way. Outside of work, you can find me cooking, hiking around the Colorado mountains, or hanging out with my cat, dogs, and pythons.
Pam Osuna
Human Resources Assistant
Let’s talk basketball, it’s my all-time favorite sport! I believe that teamwork is the key to success both on the court and in the workplace, so I strive to always be a servant to my team and community. I have been able to carry out my mission for the last seven years alongside this incredible team at Abacus Solutions Group.