Mechanical Design Engineer

Selby Jennings; Austin (TX); On-site; USD 95,000 - 150,000; Full time

Job summary

Selby Jennings seeks a Mechanical Engineer to design and develop mechanical components for high-performance computing platforms and specialized trading infrastructure in Austin, TX. You will build CAD models and production drawings for enclosures, fixtures, and subsystems, and perform thermal and structural analyses to optimize performance.

You will prototype, test, and refine hardware designs, collaborating with electrical, firmware, and infrastructure teams, and creating thorough technical

Qualifications

• Bachelor's degree in Mechanical Engineering or related field.
• 3+ years designing mechanical systems using CAD tools.
• Experience with thermal management for electronics.
• Proven ability from concept to prototyping to production.
• Hands-on fabrication and prototyping methods.

Responsibilities

• Design and develop mechanical components and systems for high-performance computing platforms and specialized trading infrastructure.
• Build detailed CAD models and production drawings for assemblies, enclosures, fixtures, and other mechanical subsystems.
• Conduct engineering analyses, including thermal simulations, structural evaluations, and system-level tradeoff studies.
• Prototype, test, and refine hardware designs through hands-on validation and integration.
• Translate concepts into manufacturable solutions while optimizing for performance, reliability, and serviceability.
• Partner with external vendors and contract manufacturers to support fabrication, assembly, and production.
• Develop tooling, fixtures, and test setups to enhance assembly, testing, and validation processes.
• Assist with prototype builds, system bring-up, and troubleshooting during deployment.
• Collaborate with cross-functional teams (electrical, firmware, and infrastructure) to integrate mechanical designs into complete systems.
• Create and maintain technical documentation, including drawings, specifications, assembly instructions, and test procedures.
• Provide design input to improve manufacturability, scalability, and operational performance.

Skills

CAD design

Thermal management

Prototyping

DFM

Documentation

Education

Bachelor's degree in Mechanical Engineering

Tools

SolidWorks

Fusion 360

Job description

• Design and develop mechanical components and systems for high-performance computing platforms and specialized trading infrastructure
• Build detailed CAD models and production drawings for assemblies, enclosures, fixtures, and other mechanical subsystems
• Conduct engineering analyses, including thermal simulations, structural evaluations, and system-level tradeoff studies
• Prototype, test, and refine hardware designs through hands-on validation and integration
• Translate concepts into manufacturable solutions while optimizing for performance, reliability, and serviceability
• Partner with external vendors and contract manufacturers to support fabrication, assembly, and production
• Develop tooling, fixtures, and test setups to enhance assembly, testing, and validation processes
• Assist with prototype builds, system bring-up, and troubleshooting during deployment
• Collaborate with cross-functional teams (electrical, firmware, and infrastructure) to integrate mechanical designs into complete systems
• Create and maintain technical documentation, including drawings, specifications, assembly instructions, and test procedures
• Provide design input to improve manufacturability, scalability, and operational performance

What You’ll Do

• Design and develop mechanical components and systems for high-performance computing platforms and specialized trading infrastructure
• Build detailed CAD models and production drawings for assemblies, enclosures, fixtures, and other mechanical subsystems
• Conduct engineering analyses, including thermal simulations, structural evaluations, and system-level tradeoff studies
• Prototype, test, and refine hardware designs through hands-on validation and integration
• Translate concepts into manufacturable solutions while optimizing for performance, reliability, and serviceability
• Partner with external vendors and contract manufacturers to support fabrication, assembly, and production
• Develop tooling, fixtures, and test setups to enhance assembly, testing, and validation processes
• Assist with prototype builds, system bring-up, and troubleshooting during deployment
• Collaborate with cross-functional teams (electrical, firmware, and infrastructure) to integrate mechanical designs into complete systems
• Create and maintain technical documentation, including drawings, specifications, assembly instructions, and test procedures
• Provide design input to improve manufacturability, scalability, and operational performance

What You’ll Get

• Hands-on experience building highly specialized, high-performance hardware with direct business impact
• A collaborative environment where your work is visible and valued
• Varied and engaging projects-no two systems are the same
• Opportunity to work alongside top talent from a diverse, global team
• Competitive compensation with performance-based bonuses
• 401(k) with up to 50% employer match
• Comprehensive benefits including medical, dental, vision, mental health, disability, and life insurance
• Generous paid time off (25 days) plus market holidays
• Office perks such as daily meals, snacks, social events, clubs, and sports leagues

What You’ll Need

• Bachelor's degree in Mechanical Engineering or a related discipline
• 3+ years of experience designing mechanical systems using CAD tools (e.g., SolidWorks, Fusion 360)
• Experience with thermal management and cooling solutions for electronics
• Proven ability to take designs from concept through prototyping and production
• Hands-on experience with fabrication and prototyping methods (machining, 3D printing, fixture design, etc.)
• Strong understanding of manufacturing processes and design for manufacturability (DFM) principles
• Experience performing engineering analyses such as structural, thermal, or CFD simulations
• Ability to troubleshoot mechanical issues during prototyping and implement practical solutions
• Strong written and verbal communication skills, with experience producing clear technical documentation
• Authorization to work in the United States (no sponsorship available)

Nice to Have

• Experience designing hardware for high-performance computing systems, networking equipment, or electronics enclosures
• Familiarity working with contract manufacturers or external fabrication partners
• Experience with fiber optics, dense electronic assemblies, or complex electromechanical systems
• Hands-on experience building or integrating systems such as servers, robotics, drones, or optical platforms
• Personal interest or experience in building or modifying computers