The Hashflag Stack¶

From Terminal to Production AI -- built for veterans with real lives.
Version 2.0

The bar: You finish able to ship production code to a live platform serving thousands of veterans -- real commits to a real codebase, not tutorials.

Why this stack¶

This stack covers 128 high-demand skills validated against Lightcast labor market data -- the same intelligence Fortune 500 companies use to forecast hiring needs. Not theory. Market-verified demand: Python, FastAPI, TypeScript, Next.js, AI integration. This is what the market is paying for right now.

Companies need AI Engineers at every level, and there aren't enough developers who know Python + FastAPI + LLMs because most programs aren't teaching it yet. You're entering a market with more demand than supply. Junior AI Engineers are commanding $85-130K, well above traditional entry-level roles. Senior engineers with this stack are hitting $200K+.

You won't build todo apps. You'll push code directly to the Vets Who Code platform -- a production application serving thousands of veterans that has generated $20 million in outcomes. When you interview, you're not showing tutorials. You're showing commits to a live codebase with real users.

The playbooks¶

The stack is delivered as four playbooks: one shared Foundations base, two build tracks that stand on it, and the AI Engineering playbook that goes deep on agent architecture. Work them in this order.

The complete journey¶

The Hashflag Stack takes you from zero to production engineer across four phases:

• Phase 1 -- Foundations: Master the tools every engineer uses daily.
• Phase 2 -- Software Engineering: Build production web applications with Next.js.
• Phase 3 -- AI Engineering: Create intelligent systems with Python and LLMs.
• Phase 4 -- Production Mastery: Ship, monitor, and scale real applications.

The core technology stack¶

These aren't random technologies -- they're the same tools companies use in production and the stack this curriculum trains you on. The curriculum teaches the Next.js App Router as a modern skill; the Vets Who Code production app itself currently runs Next.js on the Pages Router.

Development environment

• Terminal: Bash, Zsh, command-line mastery
• IDE: Visual Studio Code, optimized for productivity
• Version control: Git, GitHub, professional workflows

Frontend

• Languages: JavaScript ES6+, TypeScript
• Framework: Next.js 14+ with App Router
• Styling: Tailwind CSS, CSS Modules
• Testing: Jest, Playwright

Backend & AI

• Languages: Python 3.11+, TypeScript
• Framework: FastAPI with Pydantic v2
• AI/ML: Google Gemini, LangChain, LangSmith
• Databases: Postgres, pgvector, ChromaDB
• API design: OpenAPI 3.1, REST, Streaming

Infrastructure

• Deployment: Vercel, Google Cloud Run
• CI/CD: GitHub Actions
• Containerization: Docker
• Observability: LangSmith, structured logging
• Load testing: K6

Built for adults¶

This isn't a program that requires you to put your life on hold. The Hashflag Stack is designed using proven adult learning principles:

• Immediately useful: Build deployable components from day one.
• Relevant: Real-world problems, not academic exercises.
• Experience-based: Your military experience becomes an asset.
• Self-directed: Learn to learn -- the skill that outlasts any framework.
• Practice-focused: 90% hands-on, because we remember what we do.

What you will be able to do¶

By completing the Hashflag Stack, you will be able to:

Foundations

1. Navigate and automate with the command line
2. Configure VS Code for maximum productivity
3. Use Git and GitHub professionally
4. Work effectively in agile teams

Software Engineering

1. Write production JavaScript and TypeScript
2. Build full-stack applications with Next.js
3. Test applications comprehensively
4. Deploy with CI/CD pipelines
5. Pass technical interviews

AI Engineering

1. Build production APIs with FastAPI and Pydantic
2. Integrate Google Gemini for text and multimodal
3. Design and implement RAG systems
4. Build autonomous AI agents
5. Create streaming AI interfaces
6. Deploy AI to production with observability
7. Implement safety and security measures
8. Ship AI features to real users

Before you start¶

Prerequisites. The Hashflag Stack starts from zero. You bring:

• The discipline you learned in the military
• The determination to push through challenges
• The teamwork mentality that made you successful in uniform
• Everything else? We teach you from the ground up.

Time commitment. This is a technical accelerator built for adults with real lives. Expect to invest 20-30 hours per week for 6-9 months. You don't quit your job. You don't put your family on hold. You level up while living your life.

Required equipment.

• Computer: Mac, Windows, or Linux (8GB RAM minimum)
• Internet: Reliable broadband connection
• Everything else is free or provided

This stack paid $229K in 2025. You're learning the exact same skills. You'll push code to a production platform that's generated $20 million in outcomes for veterans. When you interview, you won't show tutorials -- you'll show real commits to a real codebase with real users.
That's not a certificate. That's proof.
vetswhocode.io