Senior Software Engineer, Full-Stack
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Job Description
Senior Full Stack Engineer developing real-time security monitoring tools at Cobalt AI. Collaborating on frontend and backend technologies including React, TypeScript, Django, and GraphQL.
Responsibilities:
- Build and refine real-time security dashboards, event triage interfaces, and fleet management tools used by security teams 24/7
- Design and implement complex, interactive UIs — canvas rendering (environment maps, robot positioning), data visualization, live robot video via WebRTC, and subscription-driven event streaming
- Own component architecture in a monorepo and contribute to a Storybook-driven design system
- Build and extend the GraphQL API — queries, mutations, and WebSocket subscriptions — serving all frontend applications
- Work with Django models in PostgreSQL — multi-tenant data isolation, schema design, query optimization, and migrations
- Ship full-stack features end-to-end — from React components to GraphQL mutations to Django models and background jobs
- Partner with the CDS and ML teams on the detection-to-event pipeline
- Write well-tested code with strong observability — tracing, structured logging, and metrics
- Participate in code reviews, architectural discussions, incident response, and on-call rotations
Requirements:
- 5+ years of professional software engineering experience, with depth in frontend development
- Strong proficiency in React and TypeScript — opinionated about component architecture, state management, and rendering performance
- Experience building complex, interactive UIs — canvas/2D rendering, real-time streaming, data visualization, or WebRTC
- Backend fluency in Python and Django — building GraphQL APIs, writing migrations, and optimizing ORM queries
- Solid understanding of PostgreSQL — data modeling, indexing, and query performance
- Comfort working in a monorepo with shared packages, generated types, and cross-team code ownership
- Experience deploying to AWS and working with containerized applications.
Benefits:
- Competitive salary
- Equity
- Full benefits (medical, vision, dental)
- Flexible work arrangements
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