Builds and maintains a production GraphQL API modeling complex, nonlinear mortgage processes. Designs event-driven systems, semantic models, and developer-friendly abstractions using TypeScript, NestJS, and Temporal.io.
130k – 220k/yr
HybridBackend Engineering
About the role
Responsibilities
Define semantic models for mortgages in code, expanding what a mortgage can be — product design at the API layer.
Build toward an event-driven API that responds to requests and proactively informs about events, reasons, and next actions.
Make complex mortgage processes feel simple through thoughtful abstractions, clear documentation, and focus on developer experience.
Design for nonlinearity, encoding choice, branching, and path-dependence natively for guided experiences.
Treat the API as a product surface: manage breaking changes, versioning, onboarding, and full lifecycle.
Tech Stack
TypeScript
GraphQL (core product)
NestJS
SQL (PostgreSQL)
Temporal.io (workflow orchestration)
Event-driven architecture
AI-driven development tooling and agentic infrastructure
Requirements
Deeply curious.
Owns features from design to development, deployment, and maintenance.
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