Sterling R.
Prototype Engineer | CAD Design | 3D Printing
I help startups, inventors, and businesses turn ideas into functional, real-world prototypes through mechanical design, electronics integration, and rapid prototyping. From early concepts to production-ready designs, I focus on building practical, manufacturable solutions that are engineered to work in the real world. My background is in Mechanical Engineering with a specialization in Aerospace, which gives me a strong foundation in structural design, system-level thinking, and engineering under real-world constraints. I combine CAD design, 3D printing, embedded systems, and hands-on fabrication into complete prototype development workflows. I specialize in Fusion 360 CAD modeling, custom mechanical systems, and electromechanical product development, with a strong focus on design for manufacturability (DFM) and design for additive manufacturing (DfAM). I also have experience developing systems that integrate mechanics with electronics, sensors, and control systems. I have experience developing: • Functional mechanical prototypes and aerospace-grade structures • 3D printable and manufacturing-ready CAD models (FDM, SLA, injection molding) • Embedded systems and microcontroller-based products (Arduino/ESP32) • Custom actuator and motion-control systems and mechanical linkages • Prototype enclosures and integrated electro-mechanical assemblies • Products optimized for rapid iteration, testing, and real-world use I approach every project with a strong focus on problem-solving, rapid iteration, and clear communication. I am especially comfortable working in fast-paced environments where concepts need to be quickly translated into physical prototypes, tested, and refined. Whether you need help refining a concept, building a working prototype, designing mechanical components, or developing a complete proof-of-concept system, I can help bring your product idea to life efficiently and professionally.
Earnings and projects
Last 6 months ÷ 5.3 months active (since May 2026)
Last 6 months: $4.7k
Billed in all: $4,816$4.8k
$1.2k in the last 6 months
Across 6 contracts
Across 7 contracts
Earnings, last 30 days
Skill rankings: Top 10% in Neural Network
Ranked by MRR among everyone on Upwork with the skill.
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