# Senior COBOL Developer (z/OS) - LATAM Remote

> Workstate · Colombia (Remote) · Contract · Posted 2026-10-02

**Workplace:** remote

## Description

Workstate seeks a Senior COBOL Developer to join our team for an 18-month modernization project! In this role, you will convert a legacy RPG II codebase to COBOL on IBM z/OS in preparation for a cloud migration to Google Cloud Platform using the Raincode mainframe rehosting platform. If you are a strong COBOL engineer who enjoys working with data and delivering high-quality results for clients, you'll fit right in at Workstate.

We aim to engage consultants who can motivate and galvanize our clients, while diving deeply into the work at hand and envisioning future projects. Our consultants are skilled decision-makers, committed to championing client visions and driving quality results.

This position is fully remote and available to people residing in Colombia or Argentina with the right to work in that country.

## Requirements

The ideal candidate will have 6+ years of professional COBOL development experience on IBM z/OS mainframes. Beyond that, we're looking for some of the following skills, but not necessarily all:

-   Strong SQL and data skills, especially DB2 for z/OS (embedded SQL, query tuning, data modeling)
-   JCL, TSO/ISPF and batch processing
-   VSAM, QSAM/sequential files and GDGs
-   Mainframe utilities such as DFSORT/SYNCSORT and IDCAMS
-   CICS
-   Legacy modernization, code conversion or mainframe migration projects
-   Mainframe rehosting or emulation platforms (Raincode, Micro Focus/Rocket Enterprise Server) or GCP
-   Source control and change management tools (Git, Endevor, ChangeMan)
-   Data validation, reconciliation and parallel-run testing
-   B2 level (upper-intermediate) or higher English language competency with ability to communicate effectively in professional settings, both written and verbal.

_Experience with RPG II or other IBM midrange languages is a plus but is_ _**not**_ _required._

**Job Duties**

-   Convert legacy RPG II programs into well-structured, maintainable COBOL on z/OS
-   Analyze existing program logic, file layouts and data flows to make sure the converted code behaves the same way
-   Develop and maintain JCL, batch job streams and related utilities
-   Write and tune SQL (DB2 for z/OS) and work with VSAM and sequential datasets
-   Take part in unit, regression and parallel testing, including data validation and reconciliation between legacy and converted output
-   Prepare code and data for rehosting on GCP with the Raincode compiler and runtime
-   Document converted programs, data dependencies and technical decisions
-   Work with the client's technical and migration teams in an Agile setting

## Apply

[Apply at Workstate](https://apply.workable.com/workstate/j/BFEF2C8AC9/apply)

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