I call it my mainframe resource continuum. As our expert workforce advances, it became clear that we needed a solution to recruit new talent and guide them along an upskilling path. Partnering with Interskill and leveraging its industry-leading training is a cornerstone of that strategy.
Greg Hulliberger, Director of Operations
Why DDC chose Interskill
- Workforce-wide upskilling
- Recognizable industry brand that attracts talent
- Federal compliance & quality assurance
- Tools to futureproof the organization’s technical capabilities
Overview
Diné Development Corporation (DDC), a Navajo Nation owned enterprise, delivers leading technology solutions to the U.S. Federal Government. DDC leads high-impact programs for its DOD and civilian customers, delivering cybersecurity, software development, infrastructure, and legacy system support—often centered around mission-critical mainframe environments.
For DDC, maintaining technically current, credentialed, and compliant teams is essential to meeting the rigorous performance, security, and reporting requirements of federal contracts. With a generational shift in mainframe expertise underway, DDC turned to Interskill Learning to ensure its workforce remains prepared for today’s challenges—and tomorrow’s opportunities.
Many of our senior team members actively use Interskill. It’s a platform that supports continuous learning at every stage of our team members’ careers.
Greg Hulliberger, Director of Operations
The Challenge: Bridging the Mainframe Skills Gap
Supporting critical government programs requires DDC to onboard new mainframe talent quickly while continuing to upskill experienced team members. Their training solution needed to be:
- Scalable and accessible across a distributed workforce
- Compliant with government training and reporting mandates
- Aligned to evolving technologies and legacy infrastructure
- Capable of supporting both early-career professionals and seasoned experts
DDC also sought to position itself as an employer of choice in a competitive talent market by offering meaningful career development through high-quality, industry-recognized training.
The level of service from the Interskill team is unmatched—I rely on Terri as if she’s an extension of my team. Detailed reporting on usage, badges, and analytics provides critical insights that demonstrate the advanced skill levels of our team members.
Erin Guise, DISA Operations Manager
The Solution: Interskill’s Mainframe eLearning Platform
DDC selected Interskill Learning as its training partner to support the full range of mainframe learning needs across its workforce. Interskill delivered:
- Role-based training paths for developers, system programmers, operators, and security staff.
- Self-paced, online modules accessible from anywhere, on any schedule.
- Compliance-tracked certifications and learning metrics for government reporting.
- Training in both foundational skills and advanced topics such as z/OS, RACF, JCL, and mainframe modernization.
When I interview candidates for mainframe positions, I consistently see their enthusiasm for the Interskill resource. It is a significant recruiting advantage that truly differentiates DDC from other employers.
Erin Guise, DISA Operations Manager
Implementation Highlights
- Scalable Deployment: Interskill was rolled out across geographically dispersed teams, enabling consistent training access regardless of location or time zone.
- Structured Learning Journeys: Custom learning paths were aligned to project roles, from entry-level hires to seasoned system engineers.
- Compliance-Ready Reporting: Interskill’s LMS provided detailed usage analytics and certification data to meet federal compliance standards.
- Hands-On Support: DDC IT managers received white-glove service and program administration, ensuring smooth rollout and ongoing performance, so DDC could focus on outcomes and program success.
Interskill has been instrumental in supporting internal promotions and team transitions. It not only empowers our mainframe technologists with the confidence to take on new roles, but also provides hiring managers with data-driven insights into our team’s qualifications.
Erin Guise, DISA Operations Manager
Results
Enhanced Workforce Readiness
New hires onboard faster, reaching operational productivity in record time. Teams are equipped to handle increasingly complex mainframe environments with confidence.
Federal Compliance & Quality Assurance
Training meets federal standards, providing leadership with confidence in project delivery readiness. Audit-ready documentation satisfies contract training obligations with minimal administrative overhead.
Continuous Upskilling
Ongoing access to updated modules enables DDC to future-proof their workforce as federal clients push for hybrid cloud and mainframe modernization.
Talent Attraction & Identification
Offering Interskill training helps DDC attract skilled candidates and identify internal high-potential talent with strong learning agility.
Talent Retention & Career Growth
Employees benefit from career-long development opportunities, improving satisfaction and internal mobility.
Our partnership with Interskill not only attracts talent to DDC, but also helps us identify candidates with the aptitude and drive to learn. When we build on that foundation with Interskill’s training, our team members are empowered to achieve outstanding results.
Greg Hulliberger, Director of Operations
Conclusion
By partnering with Interskill Learning, DDC has established a scalable, future-ready training ecosystem that empowers its workforce and strengthens its position in the federal IT landscape. With secure legacy systems vital to government operations, DDC is equipped for long-term success—powered by a skilled and confident mainframe team.
About DDC
Diné Development Corporation (DDC) delivers IT, engineering, professional, and environmental solutions that advance the missions of the federal government. As a Tribally owned organization, DDC is deeply committed to creating sustainable prosperity for the Navajo Nation while delivering innovation-forward, value-driven services to our clients.
A trusted provider of mainframe solutions, DDC partners with federal agencies to deliver secure, reliable, and mission-critical hosting and computing solutions. Through continued collaboration with mainframe training and workforce development leaders like Interskill, we remain focused on strengthening enterprise environments while empowering the next generation of mainframe professionals. To learn more about our family of companies, visit www.ddc-dine.com.
Greg Hulliberger
Greg Hulliberger possesses more than a decade of operations management experience, leading PMOs and operations for growth-stage and mid-size firms. With cross-functional expertise in management, financial governance, and delivery, Hulliberger aligns strategy and execution to drive mission success. At DDC, Hulliberger serves as Director of Operations for DDC IT Services, Red Canyon, and Seventh Emergence, managing program performance across a rapidly expanding federal portfolio. Overseeing DDC’s mainframe programs, he architected DDC’s “mainframe resource continuum,” a scalable, data-driven talent model that recruits, upskills, and retains mainframe specialists. Through a strategic partnership with Interskill Learning, he delivers role-based training that accelerates onboarding, supports internal mobility, and future-proofs DDC’s mainframe capabilities.
Erin Guise
With more than 12 years in the IT field and five years leading operational teams, Erin Guise brings a strong blend of technical knowledge and management expertise. As Operations Manager for DDC IT Services, Red Canyon, and Seventh Emergence, she leads multiple mainframe programs, driving performance, team development, and mission success in support of federal clients. Erin is deeply engaged in DDC’s mainframe initiatives, helping to ensure continuity and modernization within mission-critical environments. She also plays a key role in contract transitions, performance reporting, and continuous process improvement—laying the operational groundwork for scalable growth. Through DDC’s partnership with Interskill Learning, Erin supports the deployment of targeted training that equips team members for evolving mission requirements in mainframe and hybrid cloud environments.
About Interskill
Interskill is the core mainframe workforce skilling resource of mainframe organizations around the world. Interskill delivers over a million hours of mainframe training annually and powers 80% of all IBM digital badges awarded by IBM for mainframe training. Strategic, data-driven, mainframe workforce training that produces real learning, real progress, real results, real ROI!
Visit www.staging.interskill.com to learn more.