Full Stack Developer: AI-Driven, DoD, On-site

Eccalon, LLC; Hanover (MD); On-site; USD 110,000 - 160,000; Full time

Job summary

Eccalon, LLC in Hanover, MD 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 in Computer Science, or a related field (or equivalent work experience).
• 3+ years of experience as a Full Stack Developer shipping production web applications; experience in a DoD, federal contracting, or regulated environment a plus.
• Proficiency in Node.js and Python for server-side development; experience with Express.js, Nest.js, and/or Next.js API routes.
• Hands-on experience integrating LLM APIs into production applications; demonstrated ability to write effective prompts, implement RAG pipelines, and build tool-use/agentic workflows.
• Experience with relational databases (PostgreSQL) and NoSQL databases (DynamoDB).
• Strong understanding of RESTful API design, microservices, and AWS services.
• Proficiency with Git and trunk-based development workflows; experience with GitHub or GitLab for PR-based collaboration.
• CI/CD pipelines and cloud deployment practices on AWS; security-focused DevSecOps gates.
• Strong analytical and communication skills; ability to work independently across multiple projects.

Responsibilities

• Design, develop, and maintain full-stack web applications across UI through data layer.
• Build front-end architecture using React and Next.js; create reusable UI components.
• Integrate LLM AI capabilities using Anthropic Claude and other providers; implement RAG and agentic workflows.
• Translate designs into high-quality, accessible code; use AI-assisted tools to accelerate delivery.
• Develop back-end services in Node.js and Python; design for security and scalability.
• Integrate front-end with back-end APIs and AWS services; implement OAuth2/OIDC and JIT provisioning.
• Apply security measures per NIST 800-171 and CMMC; participate in code reviews.
• Write clean, well-documented code; enforce engineering standards and trunk-based development.
• Mentor junior engineers and conduct thorough code reviews focusing on security.

Skills

Full stack development

Regulated environment

Analytical thinking

Independent work

Education

Bachelor's in CS

Tools

Node.js

Python

Express.js

Nest.js

Next.js

PostgreSQL

DynamoDB

AWS

Git

GitHub CI/CD

Job description

Eccalon, LLC in Hanover, MD 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.