Senior Mechanical Engineer - Optical Alignment Machines

Posted Yesterday
Be an Early Applicant
San Diego, CA, USA
In-Office
125K-175K Annually
Senior level
Hardware • Semiconductor • Quantum Computing • Manufacturing
Delivering quantum light engines at scale
The Role
Design and execute complex mechanical engineering tasks for optical alignment machines, including CAD design, quantitative analysis, fabrication, integration, testing, documentation, and data analysis. The role involves precision automation, large assemblies, structural and thermal analysis, materials and manufacturing methods, linear stages, instrumentation, and mentoring junior engineers in a startup environment.
Summary Generated by Built In

Join our fast-paced and passionate team as a Senior Mechanical Engineer of Optical Alignment Machines. As we scale, you will be instrumental in building our foundation from the ground up. This is a dynamic, hands-on role for a self-starter who thrives in a fluid startup environment. You'll have the opportunity to work on cutting edge technologies, work closely with leadership, and develop and implement engineering practices that support our mission and growth. Your key responsibilities are as follows:

  • Work independently and in a team while over communicating with the manager, project engineer and the teammates. Will mentor junior engineers.
  • Execute complex engineering tasks involving planning, preparation, data/information collection and analysis and decision-making in a process involving peer reviews and documentation of the results.
  • Use tenacity, patience, self-discipline and passion for excellence to assure accuracy of execution schedule, data quality/integrity, conformance to company best practices, clarity in communication and documentation.
  • Use every opportunity to grow competency thru mentorship, curiosity, communication, exposure and initiative.

Requirements
  • This position requires access to export-controlled information. Employment is contingent upon the applicant being a U.S. person as defined by 8 U.S.C. § 1324b(a)(3).

Experience:

  • A bachelor’s degree in mechanical engineering, Physics, or a related field.
  • Minimum of 5 years of relevant experience, ideally within a startup or technology company.
  • Experience with precision automation designs and/or robotics is a plus.

Skills:

  • Deep working knowledge of multiple ME topics and strong understanding of standard mechanical engineering degree curriculum.
  • Deep understanding of material properties, mechanisms, fabrication methods: CNC milling, CNC turning, sheet metal, injection molding, laser cutting, water jet cutting, and 3D printing (metal and plastic).
  • Creative design engineer who is accustomed to working with large complex assemblies.
  • Ability to process requirements and convert it into simple solutions.
  • Experience with motor selection is a plus.
  • Good understanding of precision linear stages and linear rails.
  • Deep understanding of structural theory: static, modal, random vibration, shock, etc.
  • Deep understanding of fluids and heat transfer theory: conduction, convection and radiation.
  • Demonstrated successful execution of engineering tasks including use of mechanical CAD (SolidWorks preferred) and quantitative analysis/programming tools (Python), instrumentation and measurement, part fabrication or procurement, integration and test, data collection, analysis (ANSYS Workbench) and documentation.

Startup Mindset:

  • You're creative, flexible, and eager to wear multiple hats.
  • You're passionate about building systems from the ground up and comfortable with ambiguity and change.

Benefits

The expected annual salary range for this position is $125,000-$175,000.

As a full-time employee, you will be eligible for Monarch’s comprehensive benefits package, which includes:

  • Medical, Dental, and Vision insurance
  • Fidelity 401(k) plan with 4% employer matching
  • 20 paid time off (PTO) days per year
  • 13 paid company holidays
  • 9/80 work schedule (every other Friday off)

Monarch Quantum is proud to be an equal opportunity employer and does not discriminate on the basis of race, color, citizenship status, national origin, ancestry, sex, sexual orientation, age, religion, creed, physical or mental disability, medical condition, marital status, veteran status or any other characteristics protected under applicable federal, state and local laws.

#LI-JM1

Skills Required

  • U.S. person as defined by 8 U.S.C. § 1324b(a)(3) due to access to export-controlled information
  • Bachelor's degree in mechanical engineering, physics, or a related field
  • Minimum of 5 years of relevant experience
  • Deep working knowledge of multiple mechanical engineering topics and standard mechanical engineering curriculum
  • Understanding of material properties, mechanisms, and fabrication methods including CNC milling, CNC turning, sheet metal, injection molding, laser cutting, water jet cutting, and 3D printing
  • Experience designing large, complex mechanical assemblies
  • Understanding of precision linear stages and linear rails
  • Understanding of structural theory, including static, modal, random vibration, and shock analysis
  • Understanding of fluids and heat transfer, including conduction, convection, and radiation
  • Experience with mechanical CAD, instrumentation and measurement, fabrication or procurement, integration and testing, data collection, analysis, and documentation
  • Experience with precision automation designs and/or robotics
  • Experience with motor selection
  • Experience with SolidWorks
  • Experience with Python and ANSYS Workbench

Monarch Quantum, Inc. Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Monarch Quantum, Inc. and has not been reviewed or approved by Monarch Quantum, Inc..

  • Leave & Time Off Breadth — Time-off provisions include 20 PTO days and 13 paid holidays, indicating broad leave availability. A 9/80 schedule is also advertised, adding flexibility with every other Friday off.
  • Retirement Support — Retirement benefits feature a Fidelity 401(k) with a 4% employer match and immediate vesting. This combination signals solid support for long-term savings.
  • Fair & Transparent Compensation — Compensation is presented as competitive with larger San Diego tech employers, and job postings publish substantial salary ranges by role and level. This visibility indicates an intention to align pay with market benchmarks.

Monarch Quantum, Inc. Insights

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The Company
HQ: San Diego, CA
160 Employees
Year Founded: 2025

What We Do

Monarch Quantum is a U.S.-based quantum photonics company that designs and manufactures integrated photonics systems, known as Quantum Light Engines™, for quantum computing, sensing, and communications.

Why Work With Us

We’re looking for curious, driven individuals inspired by the intersection of physics, engineering, and imagination. Here, you’ll collaborate with world-class experts to scale transformative quantum solutions, see measurable impact from your work, and grow through mentorship and cross-disciplinary collaboration while benefiting from a flexible,

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