Senior Full-Stack Engineer for AI, Geo & IoT Platforms

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

Job summary

Trinnex is seeking a Senior Full Stack Developer to join our Digital Solutions team in Olympia, WA. You will work on modern applications that fuse sensor/IoT data, geospatial tech, machine learning, and AI-powered agents to solve real-world environmental challenges.

You will design and build scalable front-end and back-end systems, develop REST/GraphQL APIs, and contribute to agent-based architectures with RAG patterns.

Qualifications

• Bachelor's degree is required.
• 5+ years of related experience.
• Experience with cloud platforms and Kubernetes-based environments.
• Knowledge of CI/CD pipelines and automated deployment practices.

Responsibilities

• Design, develop, and maintain scalable frontend and back-end applications.
• Build, integrate, and optimize REST, GraphQL, and other APIs.
• Contribute to AI driven features, including agent-based workflows and RAG.
• Deploy applications through CI/CD pipelines and collaborate with DevOps teams.
• Mentor and support junior developers across frontend, backend, and integration work.

Skills

Full stack development

System design

Team collaboration

Communication

Education

Bachelor's degree

Tools

React

C#/.NET

Node.js

Next.js

Express

ESRI

PostGIS

Mapbox

Job description

Trinnex is seeking a Senior Full Stack Developer to join our Digital Solutions team in Olympia, WA. You will work on modern applications that fuse sensor/IoT data, geospatial tech, machine learning, and AI-powered agents to solve real-world environmental challenges.

You will design and build scalable front-end and back-end systems, develop REST/GraphQL APIs, and contribute to agent-based architectures with RAG patterns.