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Hello, I’m Ruben Barillas. I’m a Mechanical Design Engineer focused on SolidWorks CAD, design iteration, and prototyping. I support product development and manufacturing by creating parts, assemblies, drawings, and BOMs, and I communicate design intent through clear documentation and review-ready visuals. I also enjoy hands-on prototyping using my own FDM and SLA 3D printers to validate fit and function quickly, especially in remote collaboration environments. I’m comfortable working across remote teams, iterating rapidly, and prioritizing manufacturability and serviceability. I value practical problem solving, clear communication, and delivering tangible, testable results that move projects forward with speed and reliability.…Hello, I’m Ruben Barillas. I’m a Mechanical Design Engineer focused on SolidWorks CAD, design iteration, and prototyping. I support product development and manufacturing by creating parts, assemblies, drawings, and BOMs, and I communicate design intent through clear documentation and review-ready visuals. I also enjoy hands-on prototyping using my own FDM and SLA 3D printers to validate fit and function quickly, especially in remote collaboration environments. I’m comfortable working across remote teams, iterating rapidly, and prioritizing manufacturability and serviceability. I value practical problem solving, clear communication, and delivering tangible, testable results that move projects forward with speed and reliability.

Ruben Barillas

Designer, Product Designer, 3D Designer, +2

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Hello, I’m Ruben Barillas. I’m a Mechanical Design Engineer focused on SolidWorks CAD, design iteration, and prototyping. I support product development and manufacturing by creating parts, assemblies, drawings, and BOMs, and I communicate design intent through clear documentation and review-ready visuals. I also enjoy hands-on prototyping using my own FDM and SLA 3D printers to validate fit and function quickly, especially in remote collaboration environments. I’m comfortable working across remote teams, iterating rapidly, and prioritizing manufacturability and serviceability. I value practical problem solving, clear communication, and delivering tangible, testable results that move projects forward with speed and reliability.…Hello, I’m Ruben Barillas. I’m a Mechanical Design Engineer focused on SolidWorks CAD, design iteration, and prototyping. I support product development and manufacturing by creating parts, assemblies, drawings, and BOMs, and I communicate design intent through clear documentation and review-ready visuals. I also enjoy hands-on prototyping using my own FDM and SLA 3D printers to validate fit and function quickly, especially in remote collaboration environments. I’m comfortable working across remote teams, iterating rapidly, and prioritizing manufacturability and serviceability. I value practical problem solving, clear communication, and delivering tangible, testable results that move projects forward with speed and reliability.

Available to hire

Hello, I’m Ruben Barillas. I’m a Mechanical Design Engineer focused on SolidWorks CAD, design iteration, and prototyping. I support product development and manufacturing by creating parts, assemblies, drawings, and BOMs, and I communicate design intent through clear documentation and review-ready visuals. I also enjoy hands-on prototyping using my own FDM and SLA 3D printers to validate fit and function quickly, especially in remote collaboration environments.

I’m comfortable working across remote teams, iterating rapidly, and prioritizing manufacturability and serviceability. I value practical problem solving, clear communication, and delivering tangible, testable results that move projects forward with speed and reliability.

Skills

3D Design

3D Model

Product Design

Experience Level

3D Design

Expert

3D Model

Expert

Product Design

Intermediate

Language

Spanish; Castilian

Fluent

English

Fluent

Work Experience

Mechanical Design Engineer (Contract) at Oxford Global Resources

October 1, 2025 - February 1, 2026

Provide remote mechanical design support for a confidential life sciences client, delivering SolidWorks concept development and CAD iteration for sub-zero testing applications requiring consistent sensor positioning and repeatable setup. Conduct requirements-based trade studies to support concept selection, create parts and assemblies plus clear review materials, and drive make-versus-buy evaluations to reduce complexity and improve serviceability.

Independent Mechanical Design Engineer at Self-employed / Multiple Clients

August 1, 2024 - Present

Provide end-to-end SolidWorks CAD support from concept through detailed part and assembly modeling, including drawing packages and manufacturing-ready files. Rapidly prototype and iterate designs using in-house FDM and SLA 3D printing to validate fit, function, and usability, accelerating feedback cycles and reducing rework. Apply DFM and practical tolerancing to improve manufacturability and assembly, and create client-facing documentation for remote collaboration, including exploded views and revision updates. Manage multiple concurrent projects with strong communication and fast turnaround.

Mechanical Engineer at Smooth-Bor Plastics

May 1, 2022 - July 1, 2024

Created and maintained SolidWorks parts, assemblies, and drawings to support product updates, tooling, and manufacturing needs, ensuring clear manufacturing intent. Drove design iterations for manufacturability and assembly, collaborating with cross-functional teams to resolve issues and improve robustness. Supported injection molding and tooling efforts to improve production readiness and repeatability. Built and refined prototypes and fit-check models to validate geometry and interfaces before release.

Mechanical Design Engineer (Independent Contractor) at Smooth-Bor Plastics

August 1, 2024 - November 1, 2024

Provided responsive remote engineering support as a contractor, delivering quick-turn CAD updates and documentation while coordinating feedback through virtual reviews and stakeholder communication. Created and maintained designs to support product updates, tooling, and manufacturing needs, and led design iterations for manufacturability and assembly.