Remote Senior COBOL Developer – Mainframe & Modernization

BairesDev; Peru (IL); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Remote work 100%

Competitive USD compensation

Home office hardware setup

Job summary

BairesDev is seeking a Senior COBOL Developer to maintain and modernize mission-critical IBM mainframe applications. You will connect legacy business logic with modern operational requirements, ensuring stability and efficiency in high-volume processing across banking and insurance sectors.

We offer 100% remote work, competitive compensation in USD, and flexible schedules to fit your life. You will join a globally distributed team and contribute to large-scale, impactful projects.

Qualifications

• 4+ years of experience in Software Engineering with a focus on COBOL development.
• Proven expertise in maintaining and modernizing COBOL applications on IBM mainframes.
• Proficiency in working with CICS, DB2, and JCL in mainframe environments.
• Deep understanding of VSAM and both batch and online processing.
• Strong background in mainframe system architectures within banking, insurance, or government sectors.
• Advanced proficiency in English.

Responsibilities

• Design, develop, and maintain complex COBOL programs for both batch and online mainframe environments.
• Optimize mainframe application performance using CICS, DB2, and VSAM to handle large-scale data transactions.
• Analyze and troubleshoot existing legacy codebases to resolve production issues, job failures, and system abends.
• Modernize legacy systems by developing interfaces, data feeds, and integration processes with newer technologies.
• Develop and manage JCL jobs to automate and streamline mainframe batch processing workflows.
• Produce comprehensive technical documentation, including program specifications and job flow diagrams, to ensure system maintainability.

Skills

COBOL development

IBM mainframes

CICS

DB2

JCL

VSAM

Batch processing

Online processing

English proficiency

Job description

BairesDev is seeking a Senior COBOL Developer to maintain and modernize mission-critical IBM mainframe applications. You will connect legacy business logic with modern operational requirements, ensuring stability and efficiency in high-volume processing across banking and insurance sectors.

We offer 100% remote work, competitive compensation in USD, and flexible schedules to fit your life. You will join a globally distributed team and contribute to large-scale, impactful projects.