Senior/Staff Software Engineer - C++

The posting, as SirenOpt wrote it

About SirenOpt

At SirenOpt®, we are building the manufacturing intelligence layer for advanced materials. We help manufacturers visualize, understand, and control the material behavior that determines yield, performance, and safety across energy, aerospace, automotive, electronics, and semiconductor applications.

We are working on this problem because advanced materials are becoming more critical and more complex, but the tools used to manufacture them have not kept pace. Manufacturers still lack real-time visibility into the small variations that shape quality on the line. We care because those invisible variations cause scrap, waste energy and materials, create higher costs, inconsistent product performance, and introduce avoidable safety risks.

We developed PlasmaSens™, our manufacturing intelligence platform, to close that visibility gap and to lay the foundation for truly autonomous manufacturing.

We are uniquely suited to solve this problem because our expertise and our platform connect material science, plasma physics, machine learning, and manufacturing in one system. The same core technology works in-line, at-line, and off-line, and across form factors ranging from electrodes and wafers to 3D components. That flexibility lets us meet manufacturers where they are and carry insight from the lab into mass production.

We have deployed multiple PlasmaSens products with customers and collaborators across the United States, Japan, Germany, and Taiwan. We pair that real-world experience with support from leading US, European, and Japanese venture investors, the National Science Foundation, the California Energy Commission, and the Department of Energy. Our combination of differentiated technology, manufacturing experience, and global scientific and industry partnerships gives us the foundation to solve material variability at scale.

About the job

Job Title: Senior/Staff Software Engineer - C++

Location: On-Site (San Leandro, CA)

Job Type: Full-Time

Role Overview

SirenOpt is seeking a Senior / Staff Software Engineer to design and build the high-performance C++ and systems software that powers our manufacturing intelligence platform. In this role, you will help ensure the reliability, performance, and scalability of SirenOpt's software as it runs on real customer production lines, while contributing to the architecture and technical foundations needed for a growing commercial product.

Working closely with firmware, hardware, and application engineering teams across every phase of product development, you will design and optimize multi-threaded, asynchronous software on Linux, analyze and improve performance across CPU, memory, storage, networking, and I/O, and debug complex issues that span software and hardware boundaries. You will also read, maintain, and extend existing Python tooling used for automation, testing, and data analysis, and take ownership of software components throughout the full product development lifecycle.

T
[…]
rative environment and enjoy working across software, firmware, and hardware disciplines to build products used in real customer environments.

Required Qualifications

Bachelor's or Master's degree in Computer Science, Computer Engineering, Electrical Engineering, or a related technical field

5+ years of professional software development experience (Senior) or 8+ years (Staff)

Strong proficiency in modern C++ (C++17/20)

Working knowledge of Python with the ability to read, understand, maintain, and modify existing Python code

Strong experience developing software on Linux

Strong understanding of: Operating systems, Memory management, Multi-threading and concurrency, Software architecture, Performance optimization

Excellent debugging and problem-solving skills

Experience using Git and modern software development workflows

Nice to have

Experience designing and developing large-scale commercial software systems

Experience developing and shipping software for commercial products

Experience with scientific instrumentation or data acquisition systems

Experience collaborating with firmware and hardware engineering teams

Familiarity with low-latency, real-time, or data acquisition software systems

Experience developing desktop applications using Qt Widgets and Qt Charts

Familiarity with scientific computing, signal processing, physics, or machine learning

Experience with Linux systems programming

Experience with performance profiling tools such as perf or Valgrind

Experience with CMake and GDB

Familiarity with Embedded Linux

Experience with hardware communication interfaces such as Ethernet, USB, PCIe, or Serial

Familiarity with CI/CD and automated testing

Base Pay Range
$160,000 — $240,000 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