Marissa Russo

Marissa Russo serves as a key procurement professional within the Defense Information Systems Agency (DISA), supporting the agency’s mission to deliver secure, resilient, and interoperable information systems for global military operations. She manages the acquisition of mission-critical IT services, with a primary focus on computer systems design and integration to sustain the Department of Defense’s C4I infrastructure. Her work ensures the timely delivery of cybersecurity-enhanced, cloud-enabled, and spectrum-resilient solutions that underpin national defense communications. Russo’s acquisitions are strategically aligned with DISA’s modernization priorities, emphasizing agile development, zero-trust architecture, and enterprise-scale IT sustainment. Russo maintains a consistent and strategic working relationship with EXPRESSION NETWORKS LLC, a primary contractor for systems design and technical integration services. Her procurement pattern reflects a preference for long-term, performance-based partnerships with vendors capable of delivering complex, mission-oriented IT solutions under firm-fixed-price and cost-reimbursement contract types. These relationships are built on proven technical expertise in secure network architecture, enterprise cloud migration, and defense-grade software development, with an emphasis on compliance with DoD cybersecurity standards such as RMF and NIST SP 800-53. Russo’s contracting activity shows no use of socioeconomic set-asides, with 100% of awards issued under full and open competition. This reflects a mission-driven focus on technical capability and operational readiness over socioeconomic criteria, aligning with DISA’s need for rapid, scalable, and highly specialized IT support. While small business participation is not formally prioritized in her portfolio, all procurements adhere to full transparency and competitive fairness under FAR Part 6. Her primary procurement focus is on NAICS 541512 (Computer Systems Design Services), encompassing end-to-end system architecture, secure cloud infrastructure design, C4I modernization, and cybersecurity integration. She routinely acquires services related to enterprise network modernization, data center consolidation, and mission-critical application development, demonstrating deep expertise in defense IT domains requiring strict adherence to DoD standards and compliance frameworks.