S

SirenOpt

Sensors and software for thin-film R&D

Metrology Data Scientist - Signal Modeling & Applied Metrology

Full-TimeUpdated on 10/23/2026
$120k - $170k+ Equity
Mid, Senior
Bachelor's, Master's
San Leandro, CA, USA
In PersonOn-site in San Leandro, California.
AI & Machine LearningApplied Machine Learning

About the job

Requirements
  • A Bachelor of Science in Data Science, Statistics, Applied Mathematics, or a related quantitative science field with 3–5 years of applied machine learning or data science experience, or a Master of Science with 1–3 years of experience; a Ph.D. is a plus but not required.
  • Hands-on experience building and validating supervised and self-supervised predictive models in Python.
  • Ability to analyze multivariate, high-dimensional datasets and perform feature engineering and selection.
  • A solid grasp of statistical modeling, including uncertainty quantification, regularization, covariate analysis, and feature-importance methods.
  • Ability to present technical findings to technical and non-technical audiences.
Responsibilities
  • Build, calibrate, and validate predictive models that map sensor signal features to material properties.
  • Design and evaluate model architectures and featurization strategies for small-data, high-dimensional scientific datasets.
  • Apply regression, dimensionality reduction, probabilistic modeling, anomaly detection, and physics-informed machine learning.
  • Develop testing and validation frameworks for model performance, including uncertainty quantification and out-of-distribution detection.
  • Characterize model robustness across sample types, process conditions, and instrument configurations.
  • Prepare models and documentation for handoff to the software engineering team for production deployment.
  • Analyze datasets from customer proof-of-concept studies.
  • Compile technical reports and supporting materials for customers.
  • Translate findings and stakeholder feedback into model-improvement roadmaps.
Desired Qualifications
  • Experience working with time-series, spectroscopic, or other sensor-based signal data.
  • Prior work in manufacturing, materials science, energy storage, semiconductors, or another physical-science domain.
  • Prior customer-facing or applications-engineering experience in a technical product company.
  • Experience deploying models in production software environments.
  • Familiarity with data pipeline development, such as PostgreSQL or similar.
  • Fluency in Mandarin Chinese, Japanese, German, Korean, or another key stakeholder language.

About the company

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

Early VC

Total Funding

$18.5M

Headquarters

San Leandro, California

Founded

2022

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Simplify's Take

What believers are saying

  • On August 26, 2026, CEC awarded SirenOpt $2.4M BRIDGE funding.
  • On August 27, 2026, Hitachi Ventures and InMotion Ventures backed commercialization.
  • NSF’s $275K Phase 1 grant signals external validation for inline electrode quality control.

What critics are saying

  • Autumn 2026 ECF rollout failure kills SirenOpt’s first marquee factory reference.
  • Battery-electrode focus concentrates revenue around one manufacturing vertical and narrow buyer base.
  • SirenOpt depends on grants and strategic investors before meaningful commercial scale.

What makes SirenOpt unique

  • PlasmaSens combines cold atmospheric plasma with real-time, non-destructive manufacturing inspection.
  • Autumn 2026 ECF deployment gives SirenOpt a rare pilot-to-factory validation path.
  • Hitachi Ventures, InMotion Ventures, and grant funding reinforce hardware-plus-software differentiation.

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Benefits

  • Health Insurance
  • Dental Insurance
  • Vision Insurance
  • 401(k) Company Match
  • Paid Vacation
  • Paid Holidays

Growth & Insights and Company News

6 month growth

-2%

1 year growth

2%

2 year growth

8%
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.

VCNewsDaily
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.

MyScience
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.