Nathan R.

I'm a Staff-level Software Engineer with 20+ years of experience building complex systems across startups and global companies like Cisco Systems and Qualcomm. I specialize in designing and delivering production-grade systems end-to-end - from low-level real-time infrastructure all the way up to full-stack web and mobile applications. Most developers focus on one layer. I bring deep systems expertise + full-stack execution, which means I can take ownership of your entire product. ⚡ What I Do 🔹 Real-Time & Performance-Critical Systems Low-latency applications, streaming, audio/video, and systems that must perform under pressure. 🔹 AI Integration (Production, Not Hype) RAG systems, speech processing, and integrating AI into real-world products. 🔹 Full-Stack & Mobile Development Modern web apps and cross-platform mobile apps when needed—built on solid backend architecture. 🔹 System Architecture (0 → Scale) I design systems that are maintainable, scalable, and ready for real users—not just prototypes. 🏆 Experience Highlights Technical Lead — Cisco Systems ✔ Led real-time audio and ML-powered systems used in Webex ✔ Delivered cross-platform production systems (desktop + mobile) ✔ Owned architecture from design to deployment Senior Software Engineer — BabbleLabs ✔ Built real-time AI speech systems from scratch ✔ Developed system-level integrations across OS environments ✔ Contributed to successful acquisition by Cisco Senior Software Engineer — Qualcomm ✔ Delivered carrier-grade real-time communication systems (VoLTE / video) ✔ Worked with global operators and production-scale infrastructure 🧩 Technical Breadth Systems & Backend: C/C++, Python, Go, Node.js, distributed systems, microservices Full Stack: React, modern frontend frameworks, REST APIs Mobile: Cross-platform + native integration experience AI / Data: LLMs, RAG, speech processing, real-time ML Platforms: Linux, macOS, Windows 🎯 What Makes Me Different Most freelancers: -Build features I: 💪Design systems that last 💪Solve complex engineering problems 💪Own projects end-to-end 📩 Let’s Talk If you need someone who can design, build, and scale your system the right way, send me a message - I'll help you define the best approach before we start.