Full Stack Developer - AI-Powered, On-Site DoD Projects

Eccalon, LLC; Hanover (MD); On-site; USD 120,000 - 180,000; Full time

Job summary

Eccalon, LLC is seeking a Full Stack Developer to design, build, and ship production software across a portfolio of DoD, Intelligence, and enterprise programs.

You will own features end-to-end—from React front-ends and Next.js applications through Node.js/Python APIs and AWS-hosted data stores—and actively leverage LLM and AI-assisted development techniques to accelerate delivery and enhance product capabilities.

Qualifications

• Bachelor's degree or equivalent in CS or related field.
• 3+ years shipping production full‑stack web apps.
• Experience with DoD/federal contracting or regulated environments is a plus.
• Hands-on with LLM APIs, prompts, and RAG workflows.

Responsibilities

• Design, develop, and maintain full-stack web applications from UI to data layer.
• Build front-end with React/Next.js; create reusable UI components.
• Integrate LLM capabilities using Anthropic/OpenAI and other providers.
• Develop back-end services and REST APIs with Node.js and Python.
• Integrate front-end with AWS services and implement OAuth2/OIDC flows.
• Enforce security, compliance, and code reviews; mentor junior engineers.

Skills

Full stack development

React/Next.js

Node.js/Python

LLM integration

AWS cloud

REST APIs

Security/compliance

CI/CD

Team collaboration

Education

Bachelor’s degree in Computer Science or related field

Tools

Express.js

Nest.js

Next.js API routes

AWS (Cognito, Lambda)

PostgreSQL

DynamoDB

MongoDB

Git/GitHub/GitLab

Python

Job description

Eccalon, LLC is seeking a Full Stack Developer to design, build, and ship production software across a portfolio of DoD, Intelligence, and enterprise programs.

You will own features end-to-end—from React front-ends and Next.js applications through Node.js/Python APIs and AWS-hosted data stores—and actively leverage LLM and AI-assisted development techniques to accelerate delivery and enhance product capabilities.