Cartesian Systems
Software Engineer (Security)
$120K–$180K
Cambridge, MA +1 · Full-time · Posted Sep 4, 2026
- Location
- Cambridge, MA
Cambridge, Massachusetts, United States - Experience
- 3+ years; the posting says it is not an entry-level position.
About the job
Build and scale Cartesian’s software platform while leading efforts to secure customer data, infrastructure, and engineering practices.
What you'll do
- Develop product features, scalable web services, APIs, infrastructure, and CI/CD pipelines, with an emphasis on security.
- Improve threat modeling, access control, security monitoring, and guide the company through security audits and certifications such as SOC 2.
- Define security principles and processes that help the team build secure systems by default.
What they ask for
- 3+ years building software products at a company with a high engineering bar, including real exposure to security-minded work.
- Track record of driving complex, end-to-end projects.
- Strong opinions on structuring software applications for development speed, maintainability, and performance.
- Excellent written communication.
Pay
$120,000 - $180,000 annually (base salary); equity amount not stated
Tools
FastAPI, Python, Azure, Kubernetes, Helm, Terraform, Datadog, SOC 2
Model-written summary · the original posting is authoritative