Senior Software Engineer (Full-Stack)

Cobalt AI, LLC; United States; Hybrid; USD 160,000 - 210,000; Full time

Benefits offered by this job

Competitive salary (base)

Equity

Full benefits (medical, vision, dental

Flexible work arrangements

Job summary

Cobalt AI, LLC is hiring a frontend-focused software engineer in the United States to build and refine real-time security dashboards and full-stack features for our hybrid AI platform. You will own complex UI work, including canvas rendering, live streams, and data visualization, while collaborating with Django/Python services and GraphQL APIs.

We value deep frontend expertise, React/TypeScript proficiency, and experience with real-time data, WebRTC, and scalable backend systems.

Qualifications

• 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.

Responsibilities

• Build and refine real-time security dashboards, event triage interfaces, and fleet management tools used by security teams 24/7.
• Design and implement interactive UIs - canvas rendering, environment maps, robot positioning, data visualization, and live video streams.
• 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 for frontend apps.
• Work with Django models in PostgreSQL - multi-tenant data isolation, schema design, and migrations.
• Ship full-stack features end-to-end - from React components to GraphQL mutations to Django models and background jobs.
• Partner with CDS and ML teams on the detection-to-event pipeline.
• Write well-tested code with observability - tracing, structured logging, and metrics.
• Participate in code reviews, architectural discussions, incident response, and on-call rotations.

Skills

Frontend development

Real-time data visualization

TypeScript

Tools

React

GraphQL

WebRTC

Django

PostgreSQL

AWS

Monorepo tooling

Job description

Summary

Cobalt AI uses automation to elevate physical safety and security in the workplace. Our platform, Cobalt Monitoring Intelligence, is a hybrid AI system, cloud-hosted with edge-deployed hardware, that provides human-verified, real-time monitoring of surveillance cameras, alarms, and robots across enterprise locations.

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

Qualifications

• 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

Why Work for Us

• Competitive salary, equity, and full benefits (medical, vision, dental).
• Flexible work arrangements.
• A proven platform, an expanding customer base, and the opportunity to shape the engineering org at an inflection point.

Salary Range

Salary Range: $160k - $210k (actual compensation will be determined based on experience, location, and other factors permitted by law)

Equal Employment Opportunity

Cobalt AI is an equal employment opportunity employer and values diversity. Qualified candidates are considered for employment without regard to race, religion, gender, gender identity, sexual orientation, national origin, age, military or veteran status, disability, or any other characteristic protected by applicable law.