GUICHENG Q.

I help startups and product teams turn ideas into functional, manufacturable products. From concept and mechanical design through prototyping, testing, DFM, and manufacturing, I help develop products that work in the real world, not just on screen. With 20+ years of product development and manufacturing experience, I can support projects involving: ✅Core Capabilities • Product and mechanical design • 3D CAD modeling and assemblies • Complex mechanisms and functional prototypes • Design for Manufacturing (DFM) • CNC machining and 3D printing • Injection-molded plastic parts and tooling • Manufacturing drawings and production documentation • Supplier and manufacturing coordination in China ✅Engineering Approach My CAD tools include Creo, SolidWorks, and Fusion 360. My focus is not only creating CAD models. I consider functionality, fit, tolerances, materials, assembly, manufacturability, and production requirements during development so problems can be identified before they become expensive manufacturing issues. I have completed 300+ successful projects and earned a 100% Job Success Score with Top-Rated Plus status. Trusted by product teams, startups, and engineering organizations, including clients from Bosch and Qualcomm. ✅What Clients Say ⭐️⭐️⭐️⭐️⭐️Daniel, USA | R&D Manager, Bosch I have been in product development for 30 years and lead a product development organization in chicago of approx 100 people. I understand the design process very well and can say Daniel does as well. Daniel made a really nice Prototype for me. He combined electrical with mechanical design and did a great job delivering on the contract. He is a professional that takes his projects seriously. He is timely and uses the tools available to him to ensure we are in good communication. Drawings, text messages, calculations, video and phone calls. Strongly recommend ⭐️⭐️⭐️⭐️⭐️Charles, USA | Startup CEO Daniel and his team were absolutely wonderful to work with. I love a team that can get quality work done in a short time with little to no supervision. Micromanaging can be stressful and takes my bandwidth, which lowers the value of what I am paying full price for. Daniel and his team spent a good bit of time getting a clear direction and asking a lot of questions about the project goals. After that, they came back to me in a very short time with 5 different design directions. Together we worked through the pros and cons of each and finalized the design. They went to work on a prototype and in less than a few weeks I had the first and possibly final design sitting in my hands, and it was much better than I expected. I will be using them immediately on my next project and you should not hesitate to do the same A+. ⭐️⭐️⭐️⭐️⭐️Ryan, USA | Engineering Manager, formerly at Qualcomm Daniel is unquestionably the best freelancer that I have worked with on Odesk. He is also among the best mechanical engineers with whom I have worked at any company. I was previously an engineering manager at Quaclomm, and while there I worked closely with a talented mechanical engineering team to create cellphone and tablet reference designs. Daniel would have no problem matching or exceeding the performance of many engineers on the Qualcomm team. He is diligent, responsive, and pays very close attention to detail. He is an expert at his craft, having strong knowledge of mechanisms, plastics, injection molded part design, and requirements for high volume production. He also understands basic physics and applies it to his work. This is a surprisingly rare quality. His communication is great. He provides very detailed write-ups and speaks excellent English. If you need a mechanical design, and you want it done on time, and done right the first time, Daniel is your man. ✅Lets Discuss Your Project Send me a short description of your product, existing CAD files, sketches, or prototype photos. I’ll help you determine the most practical development approach, key engineering considerations, estimated cost, and next steps.