At BairesDev®, we've been leading the way in technology projects for over 15 years. We deliver cutting-edge solutions to giants like Google and the most innovative startups in Silicon Valley.

Our diverse 4,000+ team, composed of the world's Top 1% of tech talent, works remotely on roles that drive significant impact worldwide.

When you apply for this position, you're taking the first step in a process that goes beyond the ordinary. We aim to align your passions and skills with our vacancies, setting you on a path to exceptional career development and success.

As a Senior COBOL Developer, you will maintain and modernize mission-critical applications on IBM mainframes. You will connect legacy business logic with modern operational requirements, ensuring the stability and efficiency of high-volume processing systems in sectors like banking and insurance.

What You'll Do

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.

What We Are Looking For

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 p

📌 Senior COBOL Developer (Perú)
🏢 Bairesdev
📍 Perú