Linux Systems Developer (C++ / PostgreSQL / Mainframe Integration)TechDoQuest • Calgary, AB, CA

Linux Systems Developer (C++ / PostgreSQL / Mainframe Integration)

TechDoQuest • Calgary, AB, CA

6 hours ago

Job type

Full-time

Job description

Responsibilities

Design and develop Linux applications using C++ and POSIX APIs.
Customize and maintain build systems (Makefiles, CMake) for complex software compilation.
Perform cross-compilation for hybrid environments (Linux ↔ mainframe).
Optimize binaries for performance, memory usage, and reliability.
Implement database logic and optimize queries in PostgreSQL (PL / pgSQL, indexing, query tuning).

Mainframe Integration

Work with z / OS UNIX System Services (USS) for POSIX-compliant code execution.

Integrate Linux applications with CICS, IMS, and TableBase for transaction and data flows.

Handle EBCDIC ↔ ASCII conversions and ensure data integrity across platforms.

Application Support & Operations

Provide application support for production and non-production environments.

Collaborate with vendors for issue resolution, patches, and upgrades.

Maintain and update Standard Operating Procedures (SOPs) for operational tasks.

Monitor application health and troubleshoot performance issues.

DevOps & Automation

Work with CI / CD pipelines for Linux and mainframe integration.

Automate build, deployment, and monitoring processes using Shell / Python scripting.

Ensure compliance with security standards and operational best practices.

Required Skills

Strong proficiency in C++ (modern standards), STL, multi-threading, and memory management.

Hands-on experience with GNU toolchain (gcc, g++, ld, make, CMake).

Knowledge of PostgreSQL (schema design, query optimization, PL / pgSQL).

Familiarity with cross-compilation and hybrid architecture builds.

Experience with mainframe integration (CICS, IMS, TableBase).

Debugging and profiling tools : gdb, strace, perf, valgrind.

Strong scripting skills in Shell and Python.

Nice-to-Have

Experience with z / Linux (Linux on IBM Z).

Familiarity with containerization (Docker / Kubernetes).

Understanding of RACF / ACF2 security models.

Soft Skills

Strong problem-solving and troubleshooting abilities.

Excellent communication and vendor management skills.

Ability to document processes and maintain SOPs.

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Linux Systems Developer C PostgreSQL Mainframe Integration • Calgary, AB, CA

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