Linux Systems Developer (C++ / PostgreSQL / Mainframe Integration)
Linux Systems Developer (C++ / PostgreSQL / Mainframe Integration)
TechDoQuest • Calgary, AB, CA
13 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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