David Miller

I’m a Senior Software Engineer with 15+ years of experience designing and building high-performance system-level software. I focus on emulators, embedded systems, and scalable applications, with deep expertise in low-level architecture, performance optimization, and cross-platform delivery.

In recent freelance and contract roles, I deliver system-level software, desktop tools, and embedded solutions across performance-critical domains. I build C/C++/Python/C#/JavaScript components across diverse CPU/OS targets, and I own end-to-end delivery—architecture, implementation, debugging, validation, and hand-off documentation.

I’ve engineered PlayStation-focused emulation paths for console-accurate behavior, profiling and optimizing low-level execution hot spots to improve stability and test-pass rates. At IBM, I extended QEMU TCG for IBM s390x z15 capabilities and authored automated validation suites covering 50+ instruction patterns, partnering on high-performance architecture simulation and optimization. I also led Qt/C++ UART hardware bring-up tooling that cut partner validation from multi-day bench cycles to same-day checks on 3+ boards, and I refitted a QEMU-based cloud gaming backend to keep interactive round-trips within sub-100-ms budgets.

Earlier in my career, I led product and engineering efforts as a Vice President of Gaming Development and shipped arcade platforms and emulator integrations as a Software Development Project Manager. My professional ethos is full ownership and measurable impact—turning profiling data, rigorous validation, and pragmatic architecture into systems that perform reliably in real environments.