Mechanical Engineer 3

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
Performs complex mechanical engineering tasks involving design, analysis, fabrication, integration, testing, documentation, and data-driven decision-making. The role requires expertise in materials, mechanisms, fabrication methods, photonic assembly, structural mechanics, fluids, heat transfer, CAD, Python, and ANSYS Workbench. The engineer will work independently and collaboratively, mentor junior engineers, and help establish engineering practices in a fast-paced startup environment.
Summary Generated by Built In

Join our fast-paced and passionate team as a Mechanical Engineer 3. 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.

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).
  • Deep understanding of designing for photonic assembling methods: Die bonding, vacuum reflow soldering, wire-bonding, adhesives, etc.
  • 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.

Skills Required

  • Bachelor's degree in mechanical engineering, physics, or a related field
  • Minimum 5 years of relevant engineering experience
  • U.S. person status as defined by 8 U.S.C. § 1324b(a)(3), due to access to export-controlled information
  • Deep working knowledge of multiple mechanical engineering topics and standard mechanical engineering curriculum
  • Understanding of material properties, mechanisms, and fabrication methods including CNC machining, sheet metal, injection molding, laser cutting, water jet cutting, and 3D printing
  • Understanding of photonic assembly methods including die bonding, vacuum reflow soldering, wire bonding, and adhesives
  • Understanding of structural theory, including static, modal, random vibration, and shock analysis
  • Understanding of fluid mechanics and heat transfer, including conduction, convection, and radiation
  • Experience using mechanical CAD, preferably SolidWorks
  • Experience using quantitative analysis or programming tools, including Python
  • Experience with instrumentation and measurement, fabrication or procurement, integration and testing, data collection, analysis, and documentation
  • Experience within a startup or technology company

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

Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

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,

Gallery

Gallery

Similar Jobs

Northrop Grumman Logo Northrop Grumman

Aeronautical/Mechanical Engineer 2/3

Aerospace • Logistics • Security • Software • Cybersecurity
In-Office
Sunnyvale, CA, USA
85636 Employees
92K-171K Annually

Northrop Grumman Logo Northrop Grumman

Principal Engineer

Aerospace • Logistics • Security • Software • Cybersecurity
In-Office
Redondo Beach, CA, USA
85636 Employees
104K-155K Annually

Therma Logo Therma

Mechanical Engineer 3

Professional Services • Energy • Industrial • Manufacturing
In-Office
San Jose, CA, USA
10000 Employees
130K-160K Annually

Northrop Grumman Logo Northrop Grumman

Support Engineer

Aerospace • Logistics • Security • Software • Cybersecurity
In-Office
Redondo Beach, CA, USA
85636 Employees
83K-155K Annually

Similar Companies Hiring

Ford Energy Thumbnail
Automotive • Software • Energy • Utilities • Manufacturing • Renewable Energy
Glendale, Kentucky
55 Employees
Revel Thumbnail
Aerospace • Hardware • Robotics • Software
Marina Del Rey, California
70 Employees
Unusual Machines, Inc. Thumbnail
Hardware • Robotics
Orlando, FL
300 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account