Carey G.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 7, 2026.

Trusted by engineers at organizations such as Microsoft, Bloomberg, Cisco, and Sony, I help companies design, modernize, and stabilize complex software systems. I’m a senior software architect and hands-on developer specializing in C++, Python, and .NET backend systems, with 25+ years building production software in finance, healthcare, cloud, and embedded environments. Clients hire me when they need clear thinking, calm execution, and software that simply works - not experiments, shortcuts, or technical debt. IDEAL CLIENTS: • Teams inheriting complex or aging systems that need expert stabilization • Companies in regulated or high-risk environments (finance, healthcare, enterprise) • Projects where architecture, performance, and long-term support matter more than quick hacks WHAT I DO BEST (Software Architecture & Backend Engineering): • Architecting and modernizing large, complex software systems • Stabilizing legacy codebases and modernizing large production software systems • Designing secure, scalable backend systems, APIs, and distributed services • Porting and cross-platform migrations (Windows, Linux, macOS) • Hardware and device integration (USB, SDKs, proprietary protocols) • Performance tuning, reliability engineering, and maintainability • Mentoring teams and raising engineering standards Core search areas: Senior Software Engineer, Backend Developer, Systems Engineer, C++ Developer, Python Developer, .NET Developer, Software Architect, Legacy Modernization, API Development, Performance Engineering, Distributed Systems, Cross-Platform Software. TECHNICAL EXPERTISE: Languages: C++ (98–17), C#, Python, SQL, Managed C++, Pascal Frameworks & Platforms: .NET (since 1.1), WPF, WinForms, Qt, Django, Flask, COM, DCOM, ATL, MFC Cloud & Infrastructure: Azure, AWS, Docker, NGINX Databases: SQL Server, PostgreSQL, MySQL, Oracle Tools: Visual Studio, Xcode, CMake, Git, GDB, WiX Installer Operating Systems: Windows, Windows Server, Linux, macOS, Solaris, FreeBSD Protocols & Formats: REST, SOAP, XML, JSON, XSLT SELECTED PROJECT HIGHLIGHTS: • Led the migration of a 1M+ line production codebase from 32-bit Linux to 64-bit Windows for Bloomberg, delivered with zero operational disruption • Designed and implemented a cross-platform C++ adapter for proprietary medical USB devices used in regulated healthcare environments (Abbott) • Built and deployed a geo-IP API using Python, Django, and NGINX on Azure, supporting production traffic at scale • Led PlayStation’s documentation pipeline migration from Windows to Linux, including a full legacy Qt framework upgrade • Delivered core camera and licensing APIs for Microsoft Vista Licensing and LifeCam software HOW I WORK: I prioritize clarity, correctness, and long-term maintainability. I ask the right questions early, surface risks before they become problems, and communicate clearly with both technical and non-technical stakeholders. OPEN SOURCE & SPEAKING: • Geonames US Ambassador -- Speaker at Social Sciences Conference • Macroquest2 Contributor -- Advanced plugin system (MQ2Collections) EDUCATION: B.S. Computer Science -- New York University I’m open to engagements as a Senior Developer, Software Architect, Backend Engineer, or Technical Lead, depending on what your system needs most.