Senior/Staff Software Engineer - C++

San Leandro · Headquarters · USD 160,000-240,000 · 5+ years experience · Onsite · Posted Oct 1, 2026

At a glance

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.

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.
You will work closely with firmware, hardware, and application engineering teams across every phase of product development.

Design, develop, and optimize high-performance software using modern C++ (C++17/20)
Develop scalable, reliable, and maintainable software for Linux-based systems
Design multi-threaded and asynchronous software architectures
Analyze, profile, and optimize software performance across CPU, memory, storage, networking, and I/O
Read, understand, maintain, and enhance existing Python code used for automation, testing, and data analysis
Collaborate closely with firmware, hardware, and application engineering teams
Participate in software architecture, technical design, and code reviews
Debug complex system-level issues across software and hardware boundaries
Take ownership of software components throughout the product development lifecycle

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, and performance optimization
Excellent debugging and problem-solving skills
Experience using Git and modern software development workflows

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

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