Mission 12 of 12 · Final mission · Updated November 2026

Ship, Document & Defend Your Capstone

The final mission. Ship your capstone to production, back it with passing tests, a small AI evaluation suite and Langfuse evidence, run a security review and document the architecture. Then defend it live - including an unseen modification or debugging task - and get your portfolio and interviews ready.

By the end of this mission: “I can build, understand, modify, debug and maintain conventional software and AI-powered features, and defend my decisions live.”

The tech stack for this mission

Railway logoRailwayGitHub Actions logoGitHub ActionsVitest logoVitestLangfuse logoLangfuseGitHub logoGitHubLinkedIn logoLinkedIn

What you learn, checkpoint by checkpoint

  1. Checkpoint A

    Release to production with tests, regression evals and a security review

    • Configure and deploy the app to production
    • Run end-to-end tests, CI and a small AI regression eval suite
    • Do a security review and capture Langfuse tracing evidence

  2. Checkpoint B

    Document the README and architecture, and explain your tradeoffs

    • Write a clear GitHub README and an architecture diagram
    • Explain your architecture decisions and their tradeoffs
    • Debug and maintain your code like someone else will inherit it

  3. Checkpoint C

    Pass a live technical defence and prepare your portfolio and interviews

    • Defend your app live, including an unseen modification or debugging task
    • Prepare your portfolio, GitHub and LinkedIn
    • Practise technical interviews

AI companion mode · AI as Teammate

AI drafts · you edit & own it

Companion drafts artifacts you edit and own - docs, demos, interview prep. AI helps you ship the package, you stay accountable.

What proves you’re done

Public deployed app + documented repo + passing tests + AI eval suite + Langfuse evidence + live technical defence

Every mission ships something real you can show. If you can’t explain it, you can’t submit it.

Free · no card needed

Reading is not building.

This mission is part of the paid 12-week programme - but the way we teach is free to try. The free trial puts you inside Sigmo, the learning portal our students use daily, with the 6 Projects in 6 Days precourse: real projects, real code, published to your own GitHub.

Start the free trial

Mission 11

Build Your AI-Native Capstone

Ready for the real thing?

The AI-Native Software Development Programme - all 12 missions with a live cohort, daily Buildroom, and mentors watching your back.

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