Full Stack Developer: AI DoD Apps (On-Site Detroit)

Eccalon, LLC; Detroit (MI); 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 DoD and enterprise programs on-site in Detroit. 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—leveraging AI-assisted development techniques.

You will collaborate with DevOps, UX/UI, and program leadership in a security-conscious environment, applying NIST 800-171 and CMMC practices to deliver robust, scalable

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 (Anthropic Claude, OpenAI, or similar) 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); comfort writing and optimizing queries and managing schema migrations.
• Solid understanding of RESTful API design, microservices architecture, and AWS services (API Gateway, Lambda, Cognito, S3, CloudFront).
• Proficiency with Git and trunk-based development workflows; experience with GitHub or GitLab for PR-based collaboration.
• Working knowledge of CI/CD pipelines (GitLab CI/CD) and cloud deployment practices on AWS; familiarity with security-focused DevSecOps gates.
• Strong analytical and problem-solving skills; ability to work independently across multiple concurrent projects and communicate technical decisions clearly to non-technical stakeholders.
• Comfort working in a regulated, compliance-aware environment; familiarity with NIST 800-171, CMMC, or FedRAMP requirements preferred.
• Strong interpersonal and communication skills; proven ability to collaborate effectively across engineering, design, DevOps, and program management teams.

Responsibilities

• Design, develop, and maintain full-stack web applications from UI through API to data layer, with ownership of features across the entire delivery lifecycle.
• Build front-end architecture and UI components using React and Next.js; create reusable component libraries that support consistent UX across multiple products.
• Integrate LLM and AI capabilities into product features using the Anthropic API (Claude) and other model providers; apply prompt engineering, retrieval-augmented generation (RAG), and agentic workflow patterns to build intelligent, context-aware application experiences.
• Translate designs and wireframes into high-quality, accessible, responsive code; leverage AI-assisted development tools to accelerate implementation without sacrificing quality or security.
• Develop and maintain back-end services and REST APIs using Node.js and Python; design for security, scalability, and compliance from the start.
• Integrate front-end applications with back-end APIs and AWS cloud services (Cognito, Lambda, API Gateway, DynamoDB, RDS/PostgreSQL); implement authentication flows including OAuth2/OIDC and JIT provisioning.
• Implement security and data protection measures aligned to NIST 800-171 and CMMC requirements; apply OWASP Top 10 mitigations and participate in code-level security reviews.
• Write clean, well-tested, and well-documented code; contribute to and enforce engineering standards through trunk-based development and peer code review.
• Conduct thorough code reviews with a focus on security, maintainability, and AI-generated code validation; mentor junior engineers on best practices.
• Troubleshoot and debug complex issues across the full stack, including integration points with LLM APIs, cloud services, and third-party authentication providers.
• Design and manage relational and NoSQL data models across PostgreSQL, DynamoDB, and MongoDB; optimize queries and data access patterns for performance and cost.
• Apply structured prompt engineering techniques—chain-of-thought, few-shot examples, tool use, and system prompt design to build reliable, production-ready LLM-powered features; evaluate and mitigate prompt injection, hallucination, and data leakage risks.
• Partner with UX/UI designers, product managers, and DevOps to deliver features end-to-end; translate program requirements into scalable technical solutions.
• Stay current on advancements in LLM/AI tooling, web frameworks, and cloud-native development; bring new techniques back to the team through demos, documentation, and knowledge sharing.

Skills

Full stack development

Node.js

Python

LLM API integration

REST APIs

AWS basics

Git & CI/CD

Regulated environment

Communication

Problem solving

Education

Bachelor's in Computer Science or related field

Tools

PostgreSQL

DynamoDB

MongoDB

Express.js

Nest.js

Next.js API routes

OAuth2/OIDC

GitHub/GitLab

AWS services

Job description

Eccalon, LLC is seeking a Full Stack Developer to design, build, and ship production software across DoD and enterprise programs on-site in Detroit. 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—leveraging AI-assisted development techniques.

You will collaborate with DevOps, UX/UI, and program leadership in a security-conscious environment, applying NIST 800-171 and CMMC practices to deliver robust, scalable