Gabriel Marais

Senior Mechanical Engineer at Sunday

San Francisco Bay Area

About

Experienced mechanical design engineer with experience designing for prototype and mass manufacturing in CATIA and NX. Practical experience with DFM/DFA, tolerance analysis, plastic design, stamping design, casting design, and sealing. Hands on skills in machining, prototyping, validation, and testing.

Experience

  • Senior Mechanical Engineer at Sunday
    Feb 2026 - Present · 6 mos

    Robots for your home!

  • Senior Product Design Engineer, iPhone at Apple
    Jun 2022 - Feb 2026 · 3 yrs 9 mos

    • Next generation consumer product battery technologies • Design of next generation iPhone architecture including flex PCB designs, and integration of antenna, electrical subsystems and USB-C. • Design for high volume manufacturing with tolerance analysis, led prototype builds and DOEs to troubleshoot new designs, work collaboratively cross functionally across industrial designers, RF, EE, and reliability teams.

  • Tesla (3 yrs 6 mos)
    • Mechanical Design Engineer
      Jan 2019 - Jun 2022 · 3 yrs 6 mos

      • Engineered V4 supercharging post, with liquid immersed high voltage conductors, from concept through early production ramp and defined key technical specifications. • Performed heat transfer analysis and optimization to design supercharger high voltage junction box electronics enclosure to HV creepage and clearance regulations. • Root-caused connector field failures and implemented design solutions reducing monthly services costs and supercharger post downtime. • Designed new supercharger A-surface injection molded dock, including pawl locking mechanisms, NFC payment solution and Tesla's first outdoor display integration.

    • Mechanical Design Engineer
      May 2020 - Dec 2020 · 8 mos

      • Developed innovative architecture and layout for the new generation Model S Plaid and Model X Plaid battery packs • Designed Plaid battery pack enclosure stampings for manufacturing, assembly, sealability, and serviceability • Designed high-volume power electronics injection molded enclosure for the Semi-Truck Dc Link Controller and Subpack Controller PCBs.

    • Mechanical Design Engineer
      Jan 2019 - Dec 2019 · 1 yr

      • Redesigned battery pack high-volume, injection molded parts to drive down manufacturing line rework time and BOM costs in automated in manual assembly • Led prototyping, fixture design, drawings, validation, and release of owned components ramping up to mass manufacturing and assembly for over 500,000 vehicles a year • Designed Semi-Truck battery pack structural components achieving structural integrity of vehicle for a target of 10 years • Led design and validation for Semi-Truck A and B sample battery pack enclosures

  • Mechanical Engineering Intern at ProMach
    Apr 2018 - Sep 2018 · 6 mos

    • Designed mechanical components • Drafted part and assembly drawings to be manufactured in house