Senior C++ Software Developer – ZEA Platform Maintenance & Enhancement

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: TYPE OF WORK

Any

: SALARY

TBD

: HOURS PER WEEK

20

: DATE UPDATED

Aug 15, 2026

JOB OVERVIEW

Phanium LLC seeks an experienced Senior C++ Software Developer to update, maintain, and enhance our existing Zero-Exposure Architecture (ZEA) platform codebase. You will work on improving performance, adding enterprise features, refactoring legacy code, and implementing security enhancements to our quantum-resistant encryption software. This role focuses on continuous improvement and optimization of production code rather than greenfield development. Remote position with flexible hours accommodating US business schedules.

Responsibilities: Review and analyze existing Visual C++ codebase to identify optimization opportunities and technical debt; refactor code for improved maintainability, performance, and security; implement feature enhancements and bug fixes prioritized by product roadmap; integrate new cryptographic libraries and post-quantum algorithms into existing architecture; optimize USB driver code and hardware integration layers; improve multi-threading and memory management efficiency; conduct code reviews and provide constructive feedback to team members; collaborate with product and security teams to prioritize updates; maintain comprehensive documentation of changes and architectural decisions; ensure all modifications comply with FIPS 140-2 and security standards.

Required Experience:

8+ years professional C++ development experience
Expert-level proficiency in Visual C++ (MSVC) and modern C++ (C++17/20)
Proven experience maintaining and refactoring large, production codebases
Strong understanding of Windows development (Windows API, Visual Studio, WinAPI)
Demonstrated expertise in software optimization and performance tuning
Experience with memory management, debugging memory leaks, and profiling tools (Valgrind, AddressSanitizer)
Knowledge of multi-threading, synchronization primitives (mutexes, condition variables), and thread-safe design patterns
Proficiency with version control (Git) and CI/CD pipelines
Strong debugging skills using Visual Studio debugger and platform-specific debugging tools
Experience writing and maintaining unit tests (Google Test, Catch2, or similar frameworks)
Excellent communication skills and ability to document code changes clearly
Highly Valued Experience:

Cross-platform C++ development (Windows, Linux, macOS)
Experience with cryptographic libraries (OpenSSL, libsodium, Botan)
Familiarity with post-quantum cryptography or quantum-resistant algorithms
Knowledge of FIPS 140-2 compliance and secure software development practices
Experience with embedded systems or hardware driver development
Background in cybersecurity or security-focused software
Experience with CMake, build system optimization, and dependency management
Proficiency with static analysis tools (Clang, Cppcheck, Coverity)
Prior code optimization work on performance-critical systems
Experience refactoring legacy C++ codebases
Responsibilities in Detail:

Code Analysis & Refactoring

Analyze existing Visual C++ codebase to identify performance bottlenecks
Refactor code for improved readability and maintainability
Eliminate technical debt while maintaining backward compatibility
Modernize legacy code patterns to C++17/20 standards
Performance Optimization

Profile code using Visual Studio Performance Profiler
Optimize memory allocation and data structure usage
Improve algorithm efficiency
Reduce CPU and memory footprint for embedded/hardware components
Feature Implementation

Add new enterprise features to existing architecture
Integrate new cryptographic capabilities (post-quantum algorithms)
Expand cross-platform support (Windows, Linux, macOS)
Implement API enhancements for customer requirements
Security Hardening

Review code for security vulnerabilities and fix findings
Implement secure coding practices
Enhance memory safety and buffer overflow protections
Maintain FIPS 140-2 and FedRAMP compliance standards
Testing & Validation

Write comprehensive unit tests for modified code
Execute regression testing to ensure changes don't break existing functionality
Conduct memory leak detection using debugging tools
Validate changes against security requirements
Documentation & Communication

Document architectural decisions and code changes
Maintain code comments and inline documentation
Communicate technical decisions to cross-functional teams
Create technical specifications for major refactoring efforts
Tools & Technologies:

IDE: Visual Studio 2022 (primary), VS Code (secondary)
Languages: C++17/20, C
Build Systems: CMake, MSBuild
Debugging: Visual Studio Debugger, gdb, Valgrind
Version Control: Git, GitHub
Testing: Google Test, Catch2
Profiling: Visual Studio Performance Profiler, perf
Static Analysis: Clang, Cppcheck, Coverity
CI/CD: GitHub Actions, Azure Pipelines
What Success Looks Like:

Codebase performance improves 15–30% through optimization
Technical debt reduced by 20–40% through refactoring
Zero security vulnerabilities introduced by your changes
Code review feedback demonstrates thorough understanding of system
Mentorship of junior developers on best practices
Positive contributions to team culture and knowledge sharing

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Senior C++ Software Developer – ZEA Platform Maintenance & Enhancement

Please login or register as jobseeker to apply for this job.

TYPE OF WORK

SALARY

HOURS PER WEEK

DATE UPDATED

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