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Exnav29/README.md

Johnathan Lightfoot

Technology Executive · Enterprise Architect · AI & Automation Systems

I design technology around business outcomes, operational reliability, security, and controlled failure — then stay close enough to the implementation to prove that the architecture works.

My current work focuses on enterprise automation, AI-assisted engineering, workflow platforms, responsible AI, integration architecture, and production operations.

Selected architecture work

Production training and certification platform with secure payment processing, server-side trust boundaries, append-only payment events, retry-safe webhook handling, deployment controls, and explicit operational runbooks.

Responsible AI system for drafting reviewable study materials in low-resource languages. Built with explicit grounding, back-translation, human-review safeguards, and reproducible Gemma-on-AMD/ROCm evidence.

Published TypeScript integration package bringing a structured Scripture API into n8n workflows with release discipline, transparent error handling, provenance rules, and no silent content substitution.

Curated portfolio engineered around evidence rather than claims: build-time accessibility checks, content validation, GitHub metadata synchronization, graceful external-service fallback, and GitHub Actions deployment.

How I engineer

  • Source of truth before convenience. Systems should make it clear which component is authoritative and which inputs are merely claims.
  • Failure must be explicit. A service failure must never masquerade as a normal negative result or a successful transaction.
  • Security boundaries belong in the architecture. Browsers, AI models, users, webhooks, and downstream systems should receive only the authority they actually need.
  • Auditability is part of correctness. Important state changes should be attributable, reconstructable, and reconcilable.
  • Rollback and recovery are design requirements. They are not deployment-day additions.
  • AI accelerates engineering; it does not replace accountability. AI-assisted work still requires architecture, testing, provenance, review, and clear operational ownership.

Current technical environment

Python · TypeScript · JavaScript · PostgreSQL / Supabase · Cloudflare · GitHub Actions · n8n · REST APIs · Playwright · LLMs · Gemma · ROCm · vLLM · Docker · AI coding agents

My role is not to collect tools. It is to understand where they fit, what can fail, what must be protected, and how the system remains trustworthy when the happy path stops being happy.

Current focus

  • Enterprise AI and automation architecture
  • AI-assisted software engineering governance
  • Workflow and integration platforms
  • Reliability, auditability, and operational controls
  • Building stronger engineering practices around modern automation teams

Connect


Engineering principle: A system is not production-ready because it works. It is production-ready when you understand what happens when it does not.

Pinned Loading

  1. bulletproofautomations-training bulletproofautomations-training Public

    Bulletproof Automations Training subsite

    HTML 1

  2. every-tongue every-tongue Public

    AI assistant for drafting and checking Scripture study materials in low-resource languages. AMD Developer Hackathon: ACT II.

    Python 1

  3. Exnav29.github.io Exnav29.github.io Public

    Johnathan Lightfoot — portfolio. Static Astro site, deployed to GitHub Pages.

    Astro 1

  4. n8n-nodes-scriptureflow n8n-nodes-scriptureflow Public

    n8n community node for integrating ScriptureFlow Bible API tools into automation workflows.

    TypeScript 1