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# Programmeur principal ou programmeuse principale, systèmes mainframe

- **Company:** Alithya
- **Location:** United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Customer Information Control System (CICS), COBOL (Programming Language), IBM DB2, Job Control Language (JCL), Rexx (Programming Language), Mainframes, Pl/i, Virtual Storage Access Methods, Z/OS, Data Language Interface
- **Published:** October 3, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=2867830f32f52e4b

## About the Role

* 8+ years of hands-on z/OS experience, with significant time spent below the application layer;
 * Strong HLASM skills (not substitutable by COBOL or PL/I experience);
 * Binder and linkage-editor fluency;
 * Working knowledge of Language Environment internals, VSAM/QSAM control blocks, and the z/OS authorization model (APF, authorized concatenations);
 * Comfort with JCL and REXX; dump and abend analysis (IPCS, SLIP, GTF or component trace).

Extra edge

 * Db2 language interface internals, CICS global user exits and thread safety, IMS DL/I or MQ internals, SMP/E, experience with z/OS trace or diagnostic tooling, or IBM Z certifications.

Language skills

 * English: Proficient

## Description

En tant que réseau mondial de conseillers et conseillères de confiance, nous créons des solutions technologiques de pointe pour relever les défis d'aujourd'hui et anticiper les besoins de demain. Tout commence par la collaboration d'une équipe diversifiée d'innovateurs passionnés et d'innovatrices passionnées ayant la volonté de faire la différence. Ensemble, nous remettons en question le statu quo et nous nous surpassons pour atteindre de nouveaux sommets.
Prêt ou prête à laisser votre empreinte sur des mandats stimulants et à façonner l'avenir grâce à la transformation numérique et au conseil stratégique ? Donnez vie à vos ambitions en relevant votre prochain défi avec nous !

En raison du lieu de publication, cette offre d'emploi est disponible uniquement en anglais.

Your role, your impact

As a Senior Mainframe Systems Programmer, you'll work on low-level systems tooling in an IBM z/OS test environment. The work is Assembler-centric and sits below the application layer (module-level changes, subsystem exits, and the diagnostics around them), working alongside the infrastructure, application and security teams. If you're comfortable with vendor-supplied modules, module maps and dumps, then this role is for you.

Your day-to-day

 * Write and maintain HLASM code that runs as part of the runtime and subsystem environment;
 * Build and package modules and analyze load modules;
 * Work with access methods (VSAM, QSAM) and Language Environment at the control-block level;
 * Develop and install subsystem exits (CICS, Db2, IMS or MQ);
 * Use JCL and REXX to automate build, install and verification steps;
 * Troubleshoot dumps and abends, and demonstrate that a change is behavior-neutral before it ships.