Mainframe Modernization Engineer; COBOL

CTG is seeking an experienced Mainframe Modernization Engineer (COBOL) to support a large-scale legacy modernization initiative. This role combines deep expertise in COBOL, CICS, and DB2 with modern Java development to migrate mission-critical applications to scalable microservices architectures.

Location: Columbus, OH Duration: 12 months

• Develop, maintain, and migrate COBOL/CICS/DB2 online and batch applications.
• Design and build Java 21/Spring Boot microservices.
• Support application modernization, testing, deployment, and production support.
• Develop containerized solutions using Docker and Kubernetes.
• Implement Kafka-based messaging solutions.
• Optimize SQL performance and participate in Agile development activities.

• 7+ years of backend or full-stack development experience.
• Strong hands‑on experience with COBOL, CICS, DB2, and mainframe migration.
• Expert knowledge of Java 17+/21 and Spring Boot.
• Experience with microservices, Docker, Kubernetes, Kafka, Git, and CI/CD.
• Strong SQL, troubleshooting, and enterprise application architecture skills.

Excellent verbal and written English communication skills and the ability to interact professionally with a diverse group are required.

• Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field.
• Equivalent combination of education and relevant professional experience may be considered.

The expected base salary for this position ranges from $45.00 to $50.00/hour. Salary offers are based on a wide range of factors including relevant skills, training, experience, education, market factors, and where applicable, licensure or certifications obtained. In addition to salary, a competitive benefit package is also offered.

CTG will consider for employment all qualified applicants including those with criminal histories in a manner consistent with the requirements of all applicable local, state, and federal laws.

CTG is an Equal Opportunity Employer. CTG will assure equal opportunity and consideration to all applicants and employees in recruitment, selection, placement, training, benefits, compensation, promotion, transfer, and release of individuals without regard to race, creed, religion, color, national origin, sex, sexual orientation, gender identity and gender expression, age, disability, marital or veteran status, citizenship status, or any other discriminatory factors as required by law.

CTG is fully committed to promoting employment opportunities for members of protected classes.