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R&D Engineer

Sperra

$70,000 - $135,000
Sep 25, 2025
Los Angeles, CA, US
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Sperra is looking to solve the world’s biggest challenges in energy, coastal resilience, and sustainable infrastructure by pioneering a new market—Blue Ocean Infrastructure—developing large-scale concrete products using 3D concrete printing technology.

Requirements

  • B.S. in Mechanical Engineering, Civil Engineering, Materials Science, or a related field.
  • 1–3 years of hands-on lab or industry experience in concrete, construction, or additive manufacturing.
  • Strong mechanical aptitude and experience using hand and power tools.
  • Experience with CAD software (e.g., SolidWorks, AutoCAD) or willingness to quickly learn.
  • Familiarity with CAD, robotics, or automated fabrication systems is a plus.
  • Experience with 3D concrete printing, large-scale printing systems, or construction automation.
  • Familiarity with concrete mix design, curing, and mechanical testing.

Responsibilities

  • Operate and maintain large-scale 3D concrete printing systems, including setup, calibration, and troubleshooting.
  • Execute printing experiments from start to finish, including material preparation, robot operation, and post-print handling.
  • Work directly with concrete and other construction materials: mix, test, and monitor curing to ensure quality.
  • Assist in prototyping, assembly, and testing of new structural components or printing hardware.
  • Use CAD tools to review designs, prepare printing files, and modify models as needed.
  • Maintain lab equipment, tools, and robotics, ensuring proper functioning and safety compliance.
  • Record observations, collect data, and contribute to experiment documentation, technical reports, and presentations.

Other

  • A Bachelor’s degree in Engineering (Civil, Mechanical, or related field).
  • 1–3 years of experience in construction, prototyping, fabrication, or additive manufacturing.
  • Ability to work independently, take ownership of experiments, and troubleshoot practical challenges.
  • Strong problem-solving, organizational, and communication skills.
  • M.S. or Ph.D. in Mechanical Engineering, Civil Engineering, Materials Science, or a related discipline.