Full-Time

Staff Mechanical Engineer

Posted on 8/15/2025

SirenOpt

SirenOpt

11-50 employees

Sensors and software for thin-film R&D

Compensation Overview

$130k - $165k/yr

Oakland, CA, USA

In Person

Category
Mechanical Engineering (1)
Required Skills
GD&T
SolidWorks
Requirements
  • B.S./M.S. in Mechanical Engineering with minimum of 6 years of relevant industry experience.
  • Experience autonomously leading independent mechanical design projects, in particular those that involve designing a product that can be integrated into a larger system.
  • Experience with design of motion control mechanisms. Ability to properly constrain parts, define datums run through tolerance analysis. Use of GD&T to control those tolerances in drawings. Setting requirements and selection of motors, couplers, stages, gearboxes.
  • Programing of motion controllers is a plus.
  • Static and dynamic stress and strain analysis including vibration testing and analysis.
  • Some familiarity with part quality and measurement setup for CMM or OMM inspection.
  • Experience with hands-on development of prototypes.
  • Experience with initiating and maintaining supplier support.
  • Experience with maintaining awareness of customer needs and iterating on designs accordingly.
  • Experience with mechanical design for manufacturing lines – experience with roll-to-roll and/or sheet-to-sheet processes is a huge plus.
  • Familiarity with standards requirements for high-voltage/low-voltage or gas distribution devices is a plus.
  • Experience with performing sensitivity and risk analysis and using the results of those analyses to inform future mechanical designs e.g., quantifying a prototype’s sensitivity to certain environmental disturbances and creating a mechanical design that mitigates the effects of those disturbances
  • Prior exposure to high-precision, high-throughput industrial designs for material handling, metrology, and/or process automation applications are a plus.
  • Experience taking designs from initial concept development to product launch. Design for reliability, manufacturing, and service (DFx) are a plus.
  • Proficiency with use of CAD and PDM tools (e.g., SolidWorks or OnShape) to design parts and assemblies and prepare technical documentation.
  • Ability to independently identify and procure parts, manage supplier relationships, and rapidly fabricate medium-fidelity prototypes using 3D printers, metal stock, optical breadboards, etc. is preferred.
  • Demonstrated the ability to adapt to new technical challenges and excited to work in a dynamic multi-disciplinary environment
  • Excellent written, verbal and visual communication skills.
  • Ability to rapidly create and iterate upon prototypes based on client and team feedback
  • (Preferred) Experience with metrology equipment and sensors, particularly those used for metrology of advanced materials
  • (Preferred) Some familiarity with thin films, in particular any those related to Lithium- and Zinc-based battery electrodes, Thermal Barrier Coatings for turbine blades, photovoltaics, optical coatings, displays, packaging materials, semiconducting wafers, and/or adhesives.
Responsibilities
  • Lead the mechanical design and validation of a low-temperature plasma-based metrology sensor platform.
  • Interface with a small, cross-functional project team to research, develop, and validate new concepts for low-temperature plasma-based metrology
  • Perform fundamental studies to characterize and understand the sensitivity of the sensor and platform performance.
  • Closely interact with clients to iterate on the design based on their feedback, paying close attention to integration speed.
  • Create and maintain technical design documentation (e.g. requirements, 3D and 2D data, assembly documentation, test processes and test reports)
Desired Qualifications
  • (Preferred) Experience with metrology equipment and sensors, particularly those used for metrology of advanced materials
  • (Preferred) Some familiarity with thin films, in particular any those related to Lithium- and Zinc-based battery electrodes, Thermal Barrier Coatings for turbine blades, photovoltaics, optical coatings, displays, packaging materials, semiconducting wafers, and/or adhesives.
  • Experience with mechanical design for manufacturing lines – experience with roll-to-roll and/or sheet-to-sheet processes is a huge plus.
  • Programing of motion controllers is a plus.
  • Familiarity with standards requirements for high-voltage/low-voltage or gas distribution devices is a plus.
  • Experience with performing sensitivity and risk analysis and using the results of those analyses to inform future mechanical designs e.g., quantifying a prototype’s sensitivity to certain environmental disturbances and creating a mechanical design that mitigates the effects of those disturbances
  • Prior exposure to high-precision, high-throughput industrial designs for material handling, metrology, and/or process automation applications are a plus.
  • (Preferred) Experience with metrology equipment and sensors, particularly those used for metrology of advanced materials
  • (Preferred) Some familiarity with thin films, in particular any those related to Lithium- and Zinc-based battery electrodes, Thermal Barrier Coatings for turbine blades, photovoltaics, optical coatings, displays, packaging materials, semiconducting wafers, and/or adhesives.

SirenOpt creates sensors and software to speed up research and development and make manufacturing of high-performance thin films cheaper. Its hardware sensors collect real-time data on thin-film processes, while the accompanying software analyzes the data, runs models, and helps users optimize production. The company combines both hardware and software with consulting services to help clients integrate these tools into existing workflows. This blend of devices, analytics, and advisory support sets SirenOpt apart from others who may focus on just one part of the stack. The goal is to help customers in electronics, renewable energy, and advanced materials innovate quickly and produce high-quality thin films at lower costs, enabling scalable, efficient manufacturing.

Company Size

11-50

Company Stage

Grant

Total Funding

$18.5M

Headquarters

Oakland, California

Founded

2022

Simplify Jobs

Simplify's Take

What believers are saying

  • $6.6M seed funding from Voyager Ventures accelerates PlasmaSens commercialization.
  • $2.4M California Energy Commission grant boosts battery manufacturing adoption.
  • Cold plasma sensors gain traction in roll-to-roll renewable energy production.

What critics are saying

  • KLA Corporation blocks adoptions with 40% metrology market share.
  • Suzhou PlasmaTech undercuts prices by 50% in Asia electronics chains.
  • PlasmaSens AI fails 80% pilots, burns cash in 18-24 months.

What makes SirenOpt unique

  • SirenOpt uses cold atmospheric plasma for non-destructive thin film inspection.
  • PlasmaSens integrates AI analytics for real-time manufacturing insights.
  • Targets battery electrodes and electronics with 2026 factory deployments.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

401(k) Company Match

Paid Vacation

Paid Holidays

Growth & Insights and Company News

Headcount

6 month growth

-2%

1 year growth

0%

2 year growth

5%
Tech Funding News
Oct 14th, 2025
SirenOpt raises $6.5M for PlasmaSens expansion

California startup SirenOpt has raised $6.5M in a funding round led by Hitachi Ventures and InMotion Ventures, with participation from Voyager Ventures and Visionaries Tomorrow. The funds will enhance the development of its AI-powered PlasmaSens platform for real-time, non-destructive manufacturing inspection. SirenOpt also received a $2.4M grant from the California Energy Commission to advance PlasmaSens for battery electrode manufacturing, with full deployments expected by 2026.

Manufacturing Tomorrow
Jul 23rd, 2024
SirenOpt Raises $6.6M in Seed Funding to Transform Materials Manufacturing Blind Spots into Real-Time Insights Using Cold Atmospheric Plasma

SirenOpt raises $6.6M in seed funding to transform materials manufacturing blind spots into real-time insights using cold atmospheric plasma.

VC News Daily
Jul 23rd, 2024
SirenOpt Secures $6.6M Seed Funding

SirenOpt, an advanced manufacturing intelligence company, has closed a $6.6 million seed funding round. The round was led by Voyager Ventures and TOMORROW (part of Visionaries Club), with participation from Climate Club, Union Labs, Berkeley Skydeck Fund, Wireframe Ventures, Impact Science Ventures, Access Industries, Courtyard Ventures, and Climate Capital. The funding will support SirenOpt's efforts in sustainable and smart manufacturing of advanced materials.

My Science Career
Jun 22nd, 2023
Cyclotron Road Announces 2023 Cohort of Entrepreneurial Fellows | myScience / news / science wire

Jared O’Leary, SirenOpt : SirenOpt is developing a real-time sensing and software platform that improves the manufacturing performance and yield of batteries, solar cells, and carbon conversion technologies.

INACTIVE