Software Engineer (Early Career) – C++ & Systems

SirenOpt•San Leandro, CA

14h•$120,000 - $160,000•Onsite

About The Position

SirenOpt is seeking an early-career Software Engineer to help build and maintain the real-time data pipeline behind its sensing platform. The pipeline acquires data from multiple sensors, processes and stores it on Linux-based systems, and delivers it to customer applications. The role primarily uses modern C++ and Python, with mentorship from senior engineers and hands-on work with real hardware in the lab. The engineer will contribute to production software end to end, from design discussions through features running at customer sites.

Requirements

Bachelor's or Master's degree in Computer Science, Computer Engineering, Electrical Engineering, or a related technical field; recent graduates are welcome.
0–2 years of professional software development experience; internships, co-ops, research, and substantial personal or open-source projects count.
Solid foundation in C++, including memory management, references and pointers, the standard library, and basic object-oriented and generic programming.
Strong ability to read, understand, and write Python, including working within existing Python codebases used for automation, testing, and data analysis.
Ability to pick up new programming languages quickly and read, and occasionally modify, code outside of C++ and Python.
Understanding of core computer science fundamentals, including data structures, algorithms, operating systems, and concurrency basics.
Comfort with the everyday toolchain: Linux command line, build tools such as CMake, a debugger, and Git-based workflows including branches, pull requests, and code review.
Hands-on experience using AI coding tools such as Claude Code, GitHub Copilot, or Cursor in a real development workflow, with the judgment to review and test their output.
Comfort working hands-on with lab and test equipment, setting up sensors, running the system on real hardware, and collecting data for testing and validation; training on company-specific equipment is provided.
Clear written and verbal communication and the ability to work well with teammates across disciplines.

Nice To Haves

Experience with Qt, gRPC, or Protocol Buffers.
Familiarity with CI/CD pipelines and automated testing.
Experience with profiling and debugging tools such as perf, Valgrind, GDB, or sanitizers.
Familiarity with hardware communication interfaces such as Ethernet, USB, or Serial.
Contributions to open-source projects.

Responsibilities

Develop and maintain software components in modern C++ (C++17/20) for Linux-based systems, with guidance from senior engineers.
Implement features, fix bugs, and write unit and integration tests across the data pipeline, from sensor acquisition through processing and storage to services that deliver results to applications.
Write and maintain Python scripts for automation, testing, and data analysis.
Read and, when needed, modify existing code written in other languages across the codebase.
Use AI coding tools such as Claude Code and GitHub Copilot to accelerate development, and verify their output through testing, profiling, and code review.
Run the system on real hardware in the lab to test and validate changes, including setting up sensors and collecting data.
Participate in code reviews, receive and give feedback, and follow team conventions for code quality.
Help diagnose and debug issues across software and hardware boundaries in collaboration with firmware and hardware engineers.
Measure and improve the performance of existing code under the direction of senior engineers.
Document work so other team members can build on it.