John Vallejos

John Vallejos serves as a Contract Specialist within the DSC Contracting Services Division of the National Park Service, where he manages the acquisition of critical infrastructure services essential to preserving and modernizing America’s national parks. His responsibilities include planning, soliciting, evaluating, and awarding contracts for architectural, engineering, and construction-related services that support the rehabilitation of historic structures, upgrade of utility systems, and enhancement of visitor facilities across ecologically sensitive and remote sites. Vallejos ensures compliance with federal procurement regulations while aligning acquisitions with the agency’s strategic goals of resilience, sustainability, and cultural preservation. He maintains consistent working relationships with leading firms such as AECOM Technical Services, Inc., Vanasse Hangen Brustlin, Inc., Johnson, Mirmiran & Thompson, Inc., HDR Engineering Inc., and McKenzie Construction & Site Development LLC, engaging them primarily for design-build, environmental planning, and civil infrastructure projects. These partnerships reflect a preference for established, technically proficient vendors with demonstrated experience in federal environmental and historic preservation contexts, fostering long-term collaboration grounded in regulatory compliance and performance accountability. Vallejos exhibits a strong commitment to socioeconomic contracting, with 55.6% of his acquisitions structured as total small business set-asides under FAR 19.5. He consistently prioritizes small business participation, ensuring opportunities for small disadvantaged businesses, HUBZone firms, and other qualified small entities across multiple contract actions. This pattern underscores a deliberate strategy to broaden vendor diversity while maintaining technical excellence in mission-critical projects. His procurement focus centers on NAICS 541310 (Architectural Services) and 541330 (Engineering Services), reflecting deep expertise in historic preservation design, site engineering, and environmental compliance. He also procures specialized services in sign manufacturing, administrative management consulting, and heavy civil construction equipment, demonstrating a multidisciplinary approach to managing complex, multi-faceted infrastructure programs across the National Park System.