Full-Stack Platform Engineer for Agentic AI Systems

Lumbra; New York (NY); On-site; USD 120,000 - 190,000; Full time

Benefits offered by this job

Medical, dental, and vision

401(k) plan

Paid time off

Gym access on-site

Commuter benefits

Job summary

Lumbra seeks a full-stack engineer to own features end-to-end across Python backend and React frontend, delivering AI tooling to analysts. You will design FastAPI endpoints, implement interactive UI features, and build durable workflows in a fast-moving codebase.

Responsibilities include API contracts, UI state management, and performance optimization, while contributing to SDKs and ensuring test-first development.

Qualifications

• Ships production Python and React/TypeScript in a work setting.
• Strong data flow reasoning from schema to UI state.
• Writes clean, well-tested code with test-first approach.

Responsibilities

• Design and build FastAPI endpoints backed by PostgreSQL and SQLAlchemy for configuration and workflows.
• Implement interactive React and TypeScript features: conversation interfaces, workflow visualization, and knowledge-graph exploration.
• Build durable workflow orchestration for long-running agent execution, including delegation, monitoring, and timeout propagation.
• Own features across the full stack, from database migration through API contract to UI state.
• Contribute to Python and TypeScript client SDKs so programmatic consumers get ergonomic, well-typed access.

Skills

Python (async)

React

TypeScript

SQL / Relational modeling

Tools

FastAPI

PostgreSQL

SQLAlchemy

Kubernetes

GCP

Job description

Lumbra seeks a full-stack engineer to own features end-to-end across Python backend and React frontend, delivering AI tooling to analysts. You will design FastAPI endpoints, implement interactive UI features, and build durable workflows in a fast-moving codebase.

Responsibilities include API contracts, UI state management, and performance optimization, while contributing to SDKs and ensuring test-first development.