Mechanical Design Engineer (Tooling Design Focus)

Company Description

Arista Networks is an industry leader in data-driven, client-to-cloud networking for large data center, campus and routing environments. What sets us apart is our relentless pursuit of innovation. We leverage the latest advancements in cloud computing, artificial intelligence, and software-defined networking to provide our clients with a competitive edge in an increasingly interconnected world. Our solutions are designed to not only meet the current demands of the digital landscape but to also anticipate and adapt to future challenges.

At Arista we value the diversity of thought and perspectives that each employee brings to the table. We  believe that fostering an inclusive environment, where individuals from various backgrounds and experiences feel welcome, is essential for driving creativity and innovation.

Our commitment to excellence has earned us several prestigious awards, such as Best Engineering Team, Best Company for Diversity, Compensation, and Work-Life Balance. At Arista, we take pride in our track record of success and strive to maintain the highest standards of quality and performance in everything we do.

Job Description

Who You’ll Work With

As a Mechanical Design Engineer focused on tooling, you’ll collaborate with a cross-functional team of Hardware Engineering, Platform Design, Reliability Engineering, and global Contract Manufacturing (CM) partners. You’ll be part of a team that values precision, innovation, and early-stage design collaboration to ensure manufacturing success at scale.

What You’ll Do

In this role, you’ll lead the design, development, and validation of custom tooling and fixtures that support new product introduction and high-volume manufacturing. You’ll own the mechanical design process from initial concept through CAD development, documentation, and production support—driving innovation and manufacturability every step of the way.

We are looking for a mechanical design engineer with experience in tooling design Engineer who will be responsible for the conceptualization, CAD design, and engineering validation of custom tooling, fixtures, jigs, and test equipment that support high-volume electronics manufacturing. This role is centered on engineering innovation and design collaboration, not factory-floor production support. You will contribute to early-stage product design, ensuring manufacturability and quality through precise fixture and tooling design, and support NPI (New Product Introduction) into global manufacturing environments.

• Engineer, design, and validate custom tooling, test fixtures, and jigs to support high-volume production.
• Translate mechanical and process requirements into CAD models, engineering drawings, and detailed documentation.
• Participate in design reviews and provide feedback to optimize DFM/DFT aspects of new products.
• Partner closely with Hardware Engineering, Platform Design, CM partners, and Reliability Engineering teams.
• Select and specify manufacturing processes (CNC, injection molding, sheet metal, coatings) as applicable to designed tools.
• Drive tolerance stack-up analysis for complex mechanical assemblies.
• Interface with overseas CMs and vendors to enable tool release, prototype builds, and pilot production.
• Investigate and recommend new manufacturing technologies to improve quality and cost- effectiveness of tooling solutions.
• Create and manage BOMs, ECOs, and revision histories (Agile PLM and Windchill PDMLink experience a plus).

Qualifications

• B.S. or M.S. in Mechanical Engineering.
• 5–7+ years of experience in mechanical design of tooling and fixtures—preferably for high- volume or precision electronics manufacturing.
• Proficient in 3D CAD (Creo/ProEngineer preferred); GD&T and tolerance analysis required.
• Familiarity with DFM/DFA best practices.
• Experience working cross-functionally with design, test, and manufacturing engineering teams.
• Understanding of common fabrication methods (CNC, molding, sheet metal), but with a focus on design and specification—not shop-floor operation.
• Organized, detail-oriented, and highly self-motivated.
• Work with cross functional teams to deliver on scope, tooling requirements and schedule.
• Manage procurement of materials and components required for tooling projects.
• Produce equipment training documentation.
• Oversee technician/operator training on equipment. 
• Fluent in English; strong technical communication skills.
• Some travel is required. Ability to travel domestically and internationally is required.

Nice to Have

• Experience with automated test stations or tooling incorporating sensors or software interfaces.
• Familiarity with shock, vibration, and E