About Celestial AI

As the industry strives to meet the demands of the AI workloads, bottlenecks in data transfers between processors and memory have hindered progress. The Photonic Fabric based Memory Fabric provides an optically scalable solution to the ‘Memory Wall’ problem, enabling tens of Terabytes of memory capacity at full HBM bandwidths with low tens of nanoseconds of latency and extremely low power. The Photonic Fabric based Compute Fabric enables Terabyte class bandwidth between compute nodes at low latency and power. Photonic Fabric delivers a transformative leap in AI system performance, ten years more advanced than existing technologies.

Job Description: 


Celestial AI, a trailblazer in cutting-edge technology at the intersection of photonics, packaging, and advanced manufacturing, is actively seeking a seasoned Mechanical Engineer to join our innovative team. As a pivotal member of Celestial AI, you will play a crucial role in the design and improvement of components for large-scale manufacturing, driving process enhancements to propel our productization initiatives. We are looking for a candidate with outstanding mechanical design and analytical skills, specifically focused on advancing the design, implementation, and production of our Photonic Fabric-based components and systems. Your responsibilities will include utilizing creativity and engineering acumen to design components, performing root cause analysis of complex issues related to electro-opto-mechanical components and manufacturing processes, and identifying and implementing mechanical design and manufacturing process solutions to enhance performance, reduce costs, and improve reliability. Operating within a dynamic and collaborative work environment, you will excel in conducting testing campaigns to validate designs and ensuring compliance with form, fit, and function requirements. Additionally, you will be accountable for creating precise stress and thermal models, developing dependable mechanical systems, and spearheading continuous improvement initiatives to optimize the efficiency of our engineering tools and processes, ultimately ensuring the mechanical integrity and thermal performance of our cutting-edge systems. Join Celestial AI in shaping the future of technology and innovation as we push the boundaries of what is possible in photonics and advanced manufacturing.



  • Design components and create detailed mechanical drawings for various volume manufacturing processes, including machined, cast metal, injection molded plastic, sheet metal stamped, etc.
  • Develop, evaluate, and prototype complex mechanical designs, conveying them effectively using engineering concepts and rigorous mathematical analysis.
  • Identify issues, provide clarity, and collaborate with cross-functional teams to deliver effective product solutions backed by solid engineering work.
  • Work closely with suppliers to identify, develop, and implement alternate part fabrication methods, reducing hardware costs and enhancing the strength of the supply chain.
  • Execute design verification/validation test protocols and document results in comprehensive test reports.
  • Investigate and determine the root cause of design, manufacturing, or material defects, implementing solutions in line with industry standards and company procedures.
  • Provide mechanical engineering support for resolving field and manufacturing issues.
  • Support product risk assessments, Corrective and Preventive Actions, and diligence checks as required.
  • Mentor and guide other multi-disciplinary teams within Celestial AI to enhance technical expertise and support system-level integration activities.
  • Drive ideation and innovation of component and system-level solutions in collaboration with vendors to advance productization efforts



  • Bachelor's degree in Mechanical Engineering or equivalent experience.
  • 10+ years of experience in mechanical manufacturing, with a focus on technical and process development, NPI, and component/fixture manufacturing.
  • Proficiency in CAD, with expert-level Solidworks experience highly preferred.
  • Experience in metal and plastic manufacturing processes, including molding, stamping, die casting, CNC machining, welding, glue dispensing, pad/silk screen, painting, surface finishing, and assembly.
  • Experience with electronic equipment chassis/enclosure design
  • Experience with board, heatsink and enclosure development
  • Strong understanding of design input/output, requirement traceability, and FMEA risk analysis.
  • Experience conducting DOEs and utilizing statistical process control tools for data analysis.
  • Familiarity with APAC supply chain vendors.
  • Knowledge of cross-functional areas: Board/System Level component integration, material/process technologies, thermals, design for manufacturing, reliability, and cost.
  • Familiarity with component and system-level reliability, testing, and failure analysis.
  • Project management experience, including effective communication of technical and project/program status at all levels of the engineering organization.
  • Excellent problem-solving skills, sound engineering judgment, and analytical ability.
  • Strong communication skills, with the ability to engage with internal cross-functional teams and domestic/overseas suppliers.
  • Detail-oriented, process-oriented, self-driven, and capable of working independently with minimal supervision.
  • Experience with development of rack-mount server or Ethernet switch chassis, preferred


Location: Bay area location is preferred.

 For California location:

As an early startup experiencing explosive growth, we offer an extremely attractive total compensation package, inclusive of competitive base salary and a generous grant of our valuable early-stage equity.  The target base salary for this role is approximately $150,000.00 - $180,000.00. The base salary offered may be slightly higher or lower than the target base salary, based on the final scope as determined by the depth of the experience and skills demonstrated by candidate in the interviews.







We offer great benefits (health, vision, dental and life insurance), collaborative and continuous learning work environment, where you will get a chance to work with smart and dedicated people engaged in developing the next generation architecture for high performance computing.

Celestial AI Inc. is proud to be an equal opportunity workplace and is an affirmative action employer.



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