Senior Full-Stack Engineer | AI, Geo & IoT Apps

Trinnex; Hilo (HI); On-site; USD 110,000 - 160,000; Full time

Job summary

Trinnex is seeking a Senior Full Stack Developer to join our Digital Solutions team. You will build modern applications that integrate sensor/IoT data, geospatial tech, ML, and AI-powered agents to solve environmental challenges.

You’ll work across the full stack, design robust APIs, and collaborate with a cross-functional team while mentoring others. Proficiency with React, C#/.NET, Node.js, and GIS tools is preferred. This role supports a production-grade, scalable stack with CI/CD practices.

Qualifications

• Bachelor's degree.
• 5 years of related experience.
• Equivalent additional directly related experience will be considered.
• Domestic and/or international travel may be required.

Responsibilities

• Design, develop, and maintain scalable frontend and back-end applications using modern frameworks and architectures.
• Build, integrate, and optimize REST, GraphQL, and other APIs to support secure, high performing systems.
• Apply best practices in code quality, security, performance optimization, and testing throughout the development lifecycle.
• Contribute to the design and implementation of AI driven features, including agent‑based workflows and intelligent application components.
• Support systems that use retrieval augmented generation (RAG), vectorized data access, and contextual retrieval strategies.
• Collaborate on architectures that enable agent orchestration and agent to agent (A2A) communication.
• Develop and execute automated testing strategies to ensure reliability and performance.
• Deploy applications through CI/CD pipelines and partner with DevOps teams to support scalability, monitoring, and production readiness.
• Troubleshoot and resolve complex issues across the application stack.
• Collaborate with developers, designers, DevOps, and domain experts on solution design and feature delivery.
• Conduct code reviews and contribute to continuous improvement of engineering practices.
• Mentor and support junior developers across frontend, backend, and integration work.

Skills

Full stack development

React

TypeScript

C#/.NET

Node.js

API design

Geospatial tech

AI systems

RAG patterns

A2A communication

Cloud/Kubernetes

GCP

CI/CD pipelines

Mapbox

ESRI

PostGIS

Education

Bachelor's degree

Tools

Kubernetes

Google Cloud Platform (GCP)

CI/CD pipelines

ESRI

Mapbox

PostGIS

Job description

Trinnex is seeking a Senior Full Stack Developer to join our Digital Solutions team. You will build modern applications that integrate sensor/IoT data, geospatial tech, ML, and AI-powered agents to solve environmental challenges.

You’ll work across the full stack, design robust APIs, and collaborate with a cross-functional team while mentoring others. Proficiency with React, C#/.NET, Node.js, and GIS tools is preferred. This role supports a production-grade, scalable stack with CI/CD practices.