JOB DESCRIPTION

CSCI is seeking a highly skilled z/OS Connect Mainframe Integration Developer to support the modernization of a critical federal legacy system. This role focuses on integrating legacy mainframe systems with modern cloud-native applications using z/OS Connect, enabling secure, scalable, and efficient data exchange through RESTful APIs.
You will work within an Agile/DevSecOps environment, collaborating with cross-functional teams to incrementally migrate and modernize a suite of legacy COBOL-based systems. This is a mission-critical role supporting the Department of Defense’s commitment to its retirees and annuitants.

MINIMUM REQUIREMENTS

• Ability to obtain a DoD security clearance
• 5+ years of experience in mainframe development and integration
• Strong hands-on experience with z/OS Connect EE, including API creation and service mapping
• Proficiency in COBOL, JCL, and DB2 on z/OS
• Experience with RESTful API design and JSON/XML data formats
• Familiarity with Agile methodologies and DevSecOps practices
• Understand secure software development principles and DoD cybersecurity frameworks (e.g., NIST SP 800-53, Zero Trust)
• Experience working in hybrid environments integrating legacy systems with cloud platforms (Azure preferred)
• Creativity and adaptability in problem-solving
• Ability to work with clients to understand their needs
• Strong organizational and time-management skills
• Excellent written and verbal communication skills
• Professional presence

PREFERRED SKILLS

• Experience with Oracle databases and Java-based microservices
• Familiarity with tools such as GitLab, Jenkins, Selenium, Fortify, and ServiceNow
• Knowledge of DoD financial systems and standards (e.g., SFIS, SLOA)
• DoD 8140/8570 cybersecurity certification (e.g., Security+, CISSP)
• Ability to work in a team environment, as well as independently
• Strong customer and vendor relationship skills
• Demonstrated ability to comply with data standards and policies
• Motivation to learn new technologies and methodologies that demonstrate value
• Past experience working with a federal agency
• Department of Defense experience is a plus!

• Design, develop, and maintain z/OS Connect APIs to expose mainframe services for integration with modern applications
• Collaborate with Java and Oracle developers to ensure seamless orchestration between legacy and modernized components
• Support the incremental migration of mainframe functionality to cloud-native services using containerized architectures
• Participate in Agile ceremonies including sprint planning, backlog refinement, and retrospectives
• Ensure all integration solutions comply with DoD cybersecurity standards, including Zero Trust and RMF
• Assist in performance tuning, troubleshooting, and optimization of mainframe API services
• Document integration processes, data mappings, and interface specifications
• Support testing, deployment, and configuration management activities in a DevSecOps pipeline