Senior Mainframe Developer

Insight Global; Columbus (OH); On-site; USD 90,000 - 130,000; Full time

Job summary

Insight Global is seeking an Engineer II (Senior Mainframe Developer) to join the Mainframe Engineering team in Columbus, OH. The role focuses on designing, developing, testing, and implementing mainframe solutions using COBOL, DB2, CICS, and JCL, while contributing to Agile ceremonies and ensuring high availability.

Ideal candidates will have deep mainframe expertise, strong problem-solving and communication skills, and the ability to work with product teams and business partners on complex

Qualifications

• 7+ years hands-on experience with COBOL, DB2, CICS, and JCL.
• Strong understanding of Agile SDLC methodologies.
• Excellent problem-solving and communication skills; able to work independently and collaboratively.
• Experience working in large, complex mainframe environments.

Responsibilities

• Design, develop, test, and implement mainframe-based solutions using COBOL, DB2, CICS, and JCL.
• Analyze system requirements and translate them into high-quality technical deliverables.
• Troubleshoot, optimize, and enhance existing code within a high-availability mainframe environment.
• Participate actively in Agile ceremonies and contribute to sprint planning, refinement, and retrospectives.
• Collaborate cross-functionally with engineering teams to align on project goals and technical approaches.

Skills

COBOL

DB2

CICS

JCL

Agile SDLC

Problem solving

Communication

Mainframe environments

Job description

Job Description

Seeking Engineer level II (Senior Mainframe Developer) to join our Mainframe Engineering team. The ideal candidate will bring deep technical expertise in COBOL, CICS, DB2 and JCL plus the ability to grasp an understanding of complex enterprise environments. This role will contribute to major project initiatives, collaborating closely with engineering peers, product teams, and business partners to deliver high‑quality, scalable solutions. Engineer II most often use agile techniques and are a part of a larger, cross-functional team. There will also be a need to support on-call both business hours and off-hours.

We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. To learn more about how we collect, keep, and process your private information, please review Insight Global's Workforce Privacy Policy: https://insightglobal.com/workforce-privacy-policy/.

Skills and Requirements

Key Responsibilities

• Design, develop, test, and implement mainframe-based solutions using COBOL, DB2, CICS, and JCL.
• Analyze system requirements and translate them into high‑quality technical deliverables.
• Troubleshoot, optimize, and enhance existing code within a high‑availability mainframe environment.
• Participate actively in Agile ceremonies, contributing to sprint planning, refinement, and retrospectives.
• Collaborate cross‑functionally with engineering teams to ensure alignment on project goals and technical approaches.

Required Skills & Experience

• 7+ years of hands‑on experience with:
• COBOL
• DB2
• CICS
• JCL
• Strong understanding of Agile SDLC methodologies.
• Excellent problem‑solving skills with the ability to work independently and collaboratively.
• Exceptional communication skills, both verbal and written.
• Demonstrated ability to work effectively within complex, large‑scale mainframe environments.

Nice‑to‑Have Skills

• Experience with Azure or AWS cloud environments.
• Background working in both team‑driven and individual contributor roles.
• Ability to follow detailed instructions and process documentation.