Senior Full-Stack Engineer: AI, Geo & IoT

Trinnex; Seattle (WA); On-site; USD 102,000 - 179,000; Full time

Job summary

Trinnex is seeking a Senior Full Stack Developer to join the Digital Solutions team in Seattle. You will work on modern applications combining sensor/IoT data, geospatial tech, ML/AI-powered agents, and RAG-enabled features.

You will influence technical direction while building scalable, production-ready solutions. Responsibilities span frontend and backend development, API design, and secure, high-performance systems.

Qualifications

• Bachelor's degree required or equivalent experience.
• 5 years of related experience required.
• Equivalent additional directly related experience will be considered in lieu of a college degree.

Responsibilities

• Design, develop, and maintain scalable frontend and back-end applications.
• Build, integrate, and optimize REST, GraphQL, and other APIs.
• Apply best practices in code quality, security, performance and testing.

Skills

Full stack

React

C#/.NET

TypeScript

APIs REST/GraphQL

Education

Bachelor's degree

Tools

ESRI

PostGIS

Mapbox

Kubernetes

Job description

Trinnex is seeking a Senior Full Stack Developer to join the Digital Solutions team in Seattle. You will work on modern applications combining sensor/IoT data, geospatial tech, ML/AI-powered agents, and RAG-enabled features.

You will influence technical direction while building scalable, production-ready solutions. Responsibilities span frontend and backend development, API design, and secure, high-performance systems.