Legacy Systems Developer - Remote Work | REF#295368

BairesDev; United States; Remote; USD 100,000 - 150,000; Full time

Benefits offered by this job

100% remote

USD or local currency compensation

Hardware & software setup for home

Flexible hours

Paid parental leaves & holidays

Global Top 1% talent environment

Mentorship & growth opportunities

Job summary

BairesDev is seeking a Legacy Systems Developer to maintain and modernize COBOL applications on IBM mainframes. You will ensure stability of core business logic while driving modernization, all within a 100% remote role. Excellent compensation in USD or local currency, plus home setup and flexible hours.

Join a global team and collaborate on migration projects toward modern architectures, supported by mentorship and growth opportunities. Strong English required.

Qualifications

• 4+ years of experience in Software Engineering focusing on mainframe systems.
• Proven expertise in maintaining and modernizing COBOL applications on IBM mainframes.
• Proficiency in mainframe technologies including CICS, DB2, JCL, and VSAM.
• Experience with batch and online transaction processing.
• Experience with legacy system integration and migration.
• Advanced proficiency in English.

Responsibilities

• Develop, maintain, and enhance mainframe applications using COBOL and CICS.
• Manage and optimize data storage and retrieval using DB2 and VSAM file structures.
• Create and troubleshoot JCL scripts to automate batch and online processing workflows.
• Perform deep-dive analysis of existing codebases to identify refactoring and modernization opportunities.
• Support production systems through rigorous debugging, performance tuning, and technical documentation.
• Collaborate on migration projects to transition legacy workloads toward modern architectures.

Skills

COBOL

CICS

DB2

VSAM

JCL

Mainframe

Batch & Online TP

English proficiency

Tools

JCL

CICS

DB2 Utilities

Job description

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 Legacy Systems Developer, you will maintain and modernize critical COBOL applications running on IBM mainframes. You will ensure the continued stability of core business logic while implementing strategies to transition legacy systems into contemporary technological environments.

What You’ll Do

• Develop, maintain, and enhance complex mainframe applications using COBOL and CICS.
• Manage and optimize data storage and retrieval using DB2 and VSAM file structures.
• Create and troubleshoot JCL scripts to automate batch and online processing workflows.
• Perform deep-dive analysis of existing codebases to identify refactoring and modernization opportunities.
• Support production systems through rigorous debugging, performance tuning, and technical documentation.
• Collaborate on migration projects to transition legacy workloads toward modern architectures.

What We Are Looking For

• 4+ years of experience in Software Engineering with a focus on mainframe systems.
• Proven expertise in maintaining and modernizing COBOL applications on IBM mainframes.
• Proficiency in core mainframe technologies including CICS, DB2, JCL, and VSAM.
• Hands-on experience with both batch and online transaction processing.
• Demonstrated ability to support legacy system integration and migration initiatives.
• Advanced proficiency in English.

How we do make your work (and your life) easier:

• 100% remote work (from anywhere).
• Excellent compensation in USD or your local currency if preferred
• Hardware and software setup for you to work from home.
• Flexible hours: create your own schedule.
• Paid parental leaves, vacations, and national holidays.
• Innovative and multicultural work environment: collaborate and learn from the global Top 1% of talent.
• Supportive environment with mentorship, promotions, skill development, and diverse growth opportunities.

Join a global team where your unique talents can truly thrive and make a significant impact!

#BD-PRIO-2026