C Programming Consulting

Zwiegnet provides deep C programming expertise for performance-critical, systems-level, and embedded applications on Linux and Unix platforms. With decades of experience in C on everything from mainframes to modern servers, we deliver robust, efficient, and maintainable code.

Our C services include:

• Systems Programming – Kernel modules, device drivers, daemons, network services, and low-level system utilities.
• Application Development – High-performance servers, tools, CLI utilities, and custom business logic in ANSI/ISO C (C99/C11/C17).
• Porting & Migration – Moving legacy C code from Solaris, AIX, HP-UX, or older Unix to modern Linux; handling endianness, API differences, and compiler changes.
• Performance Optimization – Profiling (gprof, perf, valgrind), algorithm improvement, memory efficiency, and multi-threading (pthreads).
• Debugging & Troubleshooting – Core dump analysis (gdb), memory leak detection (valgrind), race condition resolution, and signal handling.
• Security Hardening – Secure coding practices, buffer overflow prevention, static analysis (cppcheck, clang-analyzer), and vulnerability remediation.
• Build System Expertise – Makefile, CMake, autotools, and cross-compilation for different architectures.
• Legacy Code Maintenance – Understanding and enhancing large, decades-old C codebases with minimal documentation.
• Integration – Interfacing C with databases (Oracle, PostgreSQL), scripting languages (Perl, Python), and modern frameworks.
• Code Review & Best Practices – Enforcement of coding standards, modular design, error handling, and documentation.

C remains the language of choice for maximum performance and control — we help you leverage it effectively while ensuring long-term maintainability.

Located between Madison and Milwaukee, Wisconsin since 2009 — direct access to seasoned C developers with extensive Unix/Linux systems programming experience.