---
title: 'Senior Technical Sales Engineer at SirenOpt'
canonical: 'https://feeny.ai/job/senior-technical-sales-engineer-sirenopt-san-leandro-s8972z8mbap1'
type: 'job'
last_seen: '2026-10-18'
---

# Senior Technical Sales Engineer at SirenOpt

- **Company:** SirenOpt
- **Location:** San Leandro, CA
- **Compensation:** $130k–$170k
- **Posted:** 2026-10-07
- **Last confirmed live:** 2026-10-18
- **Apply:** https://job-boards.greenhouse.io/sirenopt/jobs/4436266009

## Job description

## About SirenOpt

SirenOpt helps manufacturers make better, safer, and more reliable micro- and nano-materials. These materials are the building blocks of critical sectors of the global economy such as batteries, computer chips, aircraft components, and power systems. But, surging material demand and growing complexity are pushing production to unprecedented scales and speeds, leaving manufacturers effectively flying blind. Small, undetected variations during production lead to wastage, lower performance, higher costs, and safety risks.

SirenOpt is changing this by developing a manufacturing intelligence platform that non-destructively probes materials during production, revealing critical internal information without damaging them. Using a novel combination of cold atmospheric plasma, physics-informed machine learning, and predictive analytics, SirenOpt generates unique, real-time material fingerprints that capture material signals not accessible through conventional measurement techniques. These insights give manufacturers unprecedented visibility into how materials behave as they are made.

We turn hidden data into actionable intelligence to help manufacturers reduce variability and thus increase yield and performance. The technology can be deployed as a standalone tool or integrated directly into factory production lines. SirenOpt is currently deploying early versions of its platform with some of the largest industrial manufacturers in the world across North America, Europe, and Asia.

## About the job

Job Title: Senior Technical Sales Engineer

Location: On-Site (San Leandro, CA)

Job Type: Full-Time

## Role Overview

SirenOpt is hiring a commercially minded Senior Technical Sales Engineer professional to grow adoption of our products. This is one of the most consequential hires we will make: in a deeply technical business, the sales function is where engineering credibility becomes revenue. The person in this role owns that translation turning technical capability into clear customer value and moving quickly from first conversation to a well-scoped sale.

You will work with prospective customers to understand their use case, explain SirenOpt’s technology in practical terms, shape the right deployment solution, and carry opportunities through to close. You will be especially effective with organizations that need a tailored, credible path to evaluating or deploying new technology without a long enterprise sales cycle. Because our customers buy on technical confidence, the quality of these conversations directly determines how fast the company grows.

## What You'll Do

- Build and manage a pipeline for commercial deployments.
- Identify, qualify, and close opportunities across relevant industrial, research, and operational customer segments.
- Run discovery conversations that uncover technical requirements, buying context, timeline, and decision-makers.
- Present SirenOpt’s products and capabilities in a concise, customer-relevant way.
- Develop proposals, quotes, scopes of work, and deployment plans with internal technical teams.
- Translate customer needs into clear technical requirements and ensure handoffs are accurate.
- Lead product demonstrations, pilot discussions, and commercial negotiations.
- Maintain disciplined opportunity notes, forecasts, and next steps in the CRM.
- Bring market feedback into product, engineering, and leadership conversations.
- Represent SirenOpt professionally at customer meetings, industry events, and partner conversations.

## What We're Looking For

- Experience selling technical products, equipment, software-enabled hardware, or engineering services.
- Comfort engaging both technical users and commercial decision-makers.
- A practical understanding of consultative sales: discovery, qualification, value articulation, proposal development, and closing.
- Ability to grasp technical concepts quickly and explain them without unnecessary jargon.
- Strong written communication, particularly for proposals and customer follow-up.
- Self-directed, organized, and comfortable owning a deal cycle end to end.
- Sound judgment around scope, feasibility, pricing, and customer expectations.
- Willingness to travel occasionally for important customer meetings, demonstrations, or deployments.

Nice to have:

- Background in optical systems, sensors, scientific instrumentation, industrial technology, robotics, hardware, or related fields.
- Experience selling benchtop instruments, pilot projects, proof-of-concept engagements, or custom deployments.
- Existing relationships in SirenOpt’s target markets.
- Experience working in an early-stage company or small technical team.

What success looks like

Within your first months, you will have built a qualified pipeline, developed a crisp understanding of SirenOpt’s ideal customer and sales motion, and helped close initial benchtop and one-off deployment opportunities. Over time, you will create a repeatable commercial playbook that turns technical interest into well-scoped revenue the foundation the rest of SirenOpt's commercial growth is built on. Base Pay Range $130,000—$170,000 USD

## Benefits

- Equity and Salary compensation depends on experience
- Health, Dental, Vision plans provided
- 401k matching provided
- Time off: 20 days of PTO per year, plus approximately 15 paid US holidays per year

## About SirenOpt

## Company Overview
- **One-liner**: SirenOpt provides a non-destructive, real-time materials characterization platform that uses cold atmospheric plasma and AI to create detailed material fingerprints for manufacturing quality control.
- **Entity Type**: Private (Venture stage; total funding $21.5M)
- **Headquarters**: San Leandro, California, United States
- **Founded**: 2022
- **Founders**: Jared O’Leary (CEO), Ali Mesbah (CTO, UC Berkeley), Joel Paulson (co-founder, UW–Madison)

## Core Business
- **Primary Industry**: Manufacturing intelligence / advanced materials characterization (battery, semiconductor, aerospace, medical devices, packaging, electronics)
- **Target Customers**: B2B, Enterprise manufacturers with high-throughput production lines (roll-to-roll, piece-to-piece)
- **Mission**: “Create a paradigm shift in advanced materials characterization by leveraging cold atmospheric plasma, machine learning and predictive analytics to non-destructively create a uniquely distinctive, multifaceted material fingerprint in real-time.” [sirenopt.com](https://www.sirenopt.com/about)

## Products & Services
- **PlasmaSens™** – A modular, scalable platform for inline and offline material analysis. Uses cold atmospheric plasma to measure multiple material properties (e.g., cathodes, anodes, separators, coatings) non-destructively and in real time. Available as a benchtop standalone system, piece-to-piece (robot-arm mounted) for inline inspection, and roll-to-roll (up to 1.5m width) for continuous high-throughput monitoring. Delivers pass/fail feedback and enables predictive quality control. [sirenopt.com](https://www.sirenopt.com/)

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: Total funding **$21.5M** across five rounds (Pre-Seed $3.0M led by SkyDeck Berkeley, Seed $6.6M led by Visionaries Tomorrow and Voyager Ventures, Venture $6.5M led by Hitachi Ventures and InMotion Ventures, Grant $2.4M from California Energy Commission) [linkedin.com](https://www.linkedin.com/company/sirenopt) [cbinsights.com](https://www.cbinsights.com/company/sirenopt)
- **Notable Investors/Partners**: Voyager Ventures, Visionaries Tomorrow, Hitachi Ventures, InMotion Ventures, SkyDeck Berkeley, California Energy Commission (BRIDGE Grant), Lawrence Berkeley National Lab Cyclotron Road, Activate
- **Growth Signals**: 41 employees (59% technical), deploying with largest industrial manufacturers across North America, Europe, and Asia; first commercial product scheduled for 2026; announced deployment at ECF in Autumn 2026 [sirenopt.com](https://www.sirenopt.com/) [linkedin.com](https://www.linkedin.com/company/sirenopt)

## Competitive Advantages
- **Unique technology**: The only non-destructive measurement method using cold atmospheric plasma to generate a rich, multi-property material fingerprint in real time, without chemicals or sample preparation.
- **Speed**: From hours to seconds – quality decisions made at production speed, catching defects before they propagate.
- **Physics-informed AI**: Combines plasma signals with machine learning to detect hidden defects and predict failure modes, providing insights conventional testing cannot.
- **Flexibility**: Modular platform (benchtop, inline, roll-to-roll) adaptable to diverse substrate sizes and production environments.

## Strategic Focus
- **Commercialization**: Accelerating deployment of PlasmaSens into factory production lines, with a first commercial release in 2026 and an inline deployment at ECF that autumn.
- **Market expansion**: Targeting battery, semiconductor, aerospace, medical device, and packaging manufacturers globally.
- **Sustainability**: Enabling smarter manufacturing to reduce waste, improve yield, and accelerate development of advanced materials. [sirenopt.com](https://www.sirenopt.com/about)

## Why Work Here
- **Impact**: Join a deep-tech startup at the forefront of manufacturing intelligence, working on a “new to the world” metrology tool that transforms how materials are measured and controlled.
- **Engineering culture**: 59% of the team holds technical roles (specialist/senior level); the company values hands-on work in hardware, firmware, software, and AI.
- **Benefits**: Incentive stock options, comprehensive health coverage (medical, dental, vision), 20 days PTO, 15 paid company holidays, and 401(k) matching for qualified employees. [sirenopt.com](https://www.sirenopt.com/careers)
- **Location**: Based in San Leandro, CA (Bay Area). Office presence expected; remote/hybrid policy not explicitly stated.
- **Growth trajectory**: Early-stage (41 employees, $21.5M funding) with active hiring (5 open roles including Lead Software Engineer, Staff EE, Quality Manager) and strong backing from top-tier investors.

## Sources
1. [sirenopt.com](https://www.sirenopt.com/) – Product details, company overview
2. [sirenopt.com/about](https://www.sirenopt.com/about) – Mission, leadership, investors
3. [sirenopt.com/careers](https://www.sirenopt.com/careers) – Benefits, job openings
4. [linkedin.com/company/sirenopt](https://www.linkedin.com/company/sirenopt) – Employee count, funding rounds, department breakdown
5. [cbinsights.com/company/sirenopt](https://www.cbinsights.com/company/sirenopt) – Funding details, product differentiators

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