ResultStack is seeking a Sr. Enterprise Engineer to modernize and support legacy point-of-sale and fuel system software for a major retail technology platform. This high-impact role focuses on enhancing core business-critical platforms and solving complex problems in high-volume environments.
Responsibilities:
- Modernize and support store-level POS and fuel control systems
- Payment Authorization Flow
- Translate legacy software into modular, maintainable code
- Troubleshoot production issues across hardware/software integrations
- Collaborate with engineers and product managers to scope modernization efforts
- Participate in code reviews, platform documentation, and refactoring legacy components
- Support system reliability and performance in high-transaction retail environments
Requirements:
- Must be a US CITIZEN or Have a GREEN CARD
- 8+ years of professional software engineering experience
- Strong hands-on experience with C++ and/or C# (.NET)
- Experience working on or modernizing legacy enterprise systems, ideally in retail, fuel, or POS industries
- Familiarity with hardware integration (e.g., payment terminals, barcode scanners, fuel pumps)
- Self-starter mindset with the ability to take ownership of legacy-to-modernization projects
- Experience with NCR platforms (Radiant, R10, StorePoint), Gilbarco, Verifone, or similar systems
- Software Engineer: 8 years
- C++: 5 years
- C#: 5 years
- .NET: 5 years
- Version Control: GitHub: 5 years
- Infrastructure: Docker, Windows-based systems: 5 years
- C-Stores: 3 years
- Writing Payment Network Authorizers: 3 years
- React, Node.js, AWS — exposure helpful but not required