Principal Software Engineer, Backend



Software Engineering
San Francisco, CA, USA
Posted on Tuesday, June 4, 2024
CHAOS Inc. is a global technology company that is delivering next generation capabilities to the defense and critical industrial sectors. Founded in 2022 by a seasoned leadership team, CHAOS has quickly become the place where world-class multi-disciplinary engineers come to build mission-critical technologies. CHAOS has a mission-focused culture, dedicated to solving the toughest technical challenges. Its unique agile engineering approach enables rapid prototyping, while deep partnerships with defense and industry ensure real-world solutions.

Role Overview

CHAOS is seeking a highly skilled and motivated Software Engineer to join our team supporting our product engineering. This is a highly-collaborative role which will allow you to wear multiple hats and work very closely with our product. As a member of our engineering team, you also have the opportunity to expand your skillset across our product line.


  • Develop software that runs the CHAOS products – everything from the backend endpoints to the product assembly, operation, analysis, and testing
  • Build and maintain our data infrastructure, real-time data processing, data transportation, and networking
  • Work with the commercial off-the-shelf (COTS) hardware (e.g. computers, switches, Software-Defined Radios, etc.)
  • Support and collaborate with system, software, and hardware engineers
  • Travel to our LA office once every 2 weeks (for 2-3 days at a time) to participate in Engineering Sprint activities

Minimum Requirements

  • Bachelor's Degree in Computer Science or relevant engineering field
  • Minimum of 8+ years of experience in professional, object-oriented software development (outside of the academic setting)
  • Experience with Python, SQL, numpy, and distributed systems
  • Experience with message-based architectures like Kafka, SQS, or ZeroMQ
  • Experience with the Software Architecture, System & SW requirements development, and flow-down process
  • Experience with System or Subsystem-level Integration, Verification, and Validation (IV&V)

Preferred Requirements

  • Master's or PhD degree in relevant field
  • Development experience in Ground or Airborne Sensors (Radars, EO/IR, EW, etc.)
  • Data Engineering/Big Data incl ingestion & analysis
  • Network Communications
  • Modeling & Simulation, including hardware-in-the-loop and software-in-the-loop testbeds for algorithm verification
  • Experience designing algorithms for RF/IQ, target detection, and tracking
  • Familiarity with Agile lifecycle processes including Scrum, Continuous Integration, and Test Driven Development Methodologies
  • Working knowledge of Linux, VxWorks, or other Real-time operating systems
  • Experience with Software Defined Radios (e.g. Ettus)
  • Experience cross-compiling targeting multiple processors (e.g. ARM)
  • Experience with cmake and complex, build systems.
  • Experience with 2D and 3D Visualization ideally in defense use cases
  • Experience with production-level SW development, including Continuous Integration/Continuous Delivery (CI/CD) using modern FOSS/COTS toolsets.
  • Experience with SW development tools enforcing SW-development best practices (e.g. linting, code coverage, code quality/security scanning, doc gen, etc.)
  • Experience with SW Design, code, integration, and test of production systems
  • Experience with git
  • Excellent written and verbal communication skills
  • Ability to work with minimal supervision and collaborate on small teams
  • Familiarity with cloud computing and virtualization technologies
  • Experience with additional languages such as Rust, NodeJS, Java, Bash, etc.


  • Health Benefits: Your medical, dental and vision benefits will be 100% paid for by the company
  • Additional benefits: life, FSA, HSA, 401k (+ Company match), and more
  • Our Perks: free lunch every day, ‘No meeting Fridays’, unlimited PTO (for exempt employees), casual dress code, beautiful office location in Hermosa Beach with ocean views!
  • Compensation Components: competitive base salaries, generous pre-IPO stock option grants, relocation assistance + (coming soon!) annual bonuses
  • Company Size: 60 employees and counting!
  • More About Us: We're building the next generation of aerospace, defense and critical industry technologies with a seasoned team of mission-focused individuals. We were founded in June 2022 and our goal is to become the platform where world-class engineers come to solve critical, real-world problems. We use agile engineering approaches which enable rapid prototyping, deep partnerships with the defense industry ensuring real-world application, and our newly-invented Coherence platform (through which we’ve made a fundamental breakthrough) improves sensor performance and decision-making in real-time. As of September, 2023 we have raised ~$100M with 8VC as a leading investor. With a managing team that includes Epirus’ founding members (responsible for building a $1.5B company from scratch) + key drivers from Palantir (instrumental in Palantir’s growth to $1B in revenue), we are well-positioned to become one of the fastest growing companies to date!

Salary Range: $190k - $285k

The stated compensation range reflects only the targeted base compensation range and excludes additional earnings such as bonus, equity, and benefits. If your compensation requirements fall outside of the range, we still encourage you to apply. The salary range for this role is an estimate based on a range of compensation factors, inclusive of base salary only. Actual salary offer may vary based on (but not limited to) work experience, education and/or training, critical skills, and/or business considerations.