King Joshua Marcos

Founder & Developer, ModlyAI | Remote | 2025 – Present

• Built and shipped an AI furniture platform (modlyai.tech) solo, covering front end, back end, database, and hosting on Vercel, taking it from concept to a live product.
• Own the full technology stack and day-to-day operations, architecture, feature builds, deployment, SOPs, reporting, and CMS/content pipelines, keeping the platform running and shipping without a team.
• Automated repetitive data workflows with AI-powered tools, cutting manual processing time by about 40 percent.
• Use Claude daily to prototype features and debug issues, shortening the time between an idea and a shipped feature.
• Wrote SQL queries to extract, validate, and cross-check data across system tables, catching inconsistencies before they reached reporting.

Engineering Department Assistant (Work Immersion), Municipal Government of Urdaneta City | Urdaneta, Pangasinan | 2020

• Assisted licensed engineers and architects during site visits and field inspections, supporting accurate on-site documentation.
• Encoded and filed technical documents, engineering records, and administrative paperwork, keeping departmental records accurate and easy to retrieve.

ModlyAI (modlyai.tech · github.com/marcosmodly/modlyai) | Live product. Next.js, TypeScript, Claude API, 3D rendering

• Built an AI furniture platform end to end, taking a shopper's room photo through catalog matching, AI material customization, and 3D rendering, so they can preview furniture in their own space before buying.
• Owned architecture, backend, frontend, and deployment as the sole developer, taking the product from first commit to a live production site.

Marketing Skill (github.com/marcosmodly/marketing-skill) | Installable plugin. Claude Code Agent Skills, Python, Markdown-based state

• Built and published in four days an installable, MIT-licensed Claude Code plugin of twelve composable skills covering competitor research, content, SEO, ads, cold outreach, and community posting for eleven platforms, all reading one shared brand-voice config.
• Designed the approval gate into the shared state file itself: drafting skills can only write Planned, Drafted, or Ready for Approval, and only publish-pipeline can write Approved, in the same turn a person has seen the real content and replied, so nothing sends without a live human reply.
• Wrote about 1,100 lines of dependency-free Python, including hand-off scripts that refuse to run without --dry-run or --confirmed and redact credentials in dry-run output, alongside a Gmail-synced suppression list that permanently blocks re-contact after a reply, bounce, or opt-out.

Holdfast (useholdfast.co · github.com/marcosmodly/holdfast) | Live product. Next.js, TypeScript, Telegram Bot API, Claude API

• Built a Telegram bot that transcribes a short voice note after you meet someone and extracts the person, what is happening in their life, and what was promised, resurfacing it as a reminder on the day it matters.
• Built an evaluation suite of twelve test transcripts run across four prompt versions, three trials each, taking extraction accuracy from 24/36 to 36/36 by moving date resolution, commitment verification, and message copy out of the model and into deterministic code, with 23 unit tests covering date handling.
• Found and fixed a persistence bug where ten of eleven captures silently stored nothing despite the bot reporting success every time, tracing it to a single Instant transaction where one rejected step discarded the person, the facts, and the commitments, and closing the gap between reported and actual success.

Second Brain (github.com/marcosmodly/second-brain-ai) | Next.js, PostgreSQL, pgvector, OpenAI embeddings, JWT auth

• Built a personal knowledge base with real semantic search, embedding notes on save and retrieving them by cosine similarity over pgvector, so related notes surface even without shared keywords.
• Built auth (bcrypt + JWT session cookies) and the Postgres schema from scratch instead of a managed auth/DB product, keeping full control over the data model and session security.

Screenshot to Website (github.com/marcosmodly/screenshot-to-website) | Next.js, TypeScript, Claude vision API, Tailwind

• Built a tool that converts a UI screenshot into working, responsive HTML and Tailwind, with a live split-pane preview that re-renders as you edit the code, so changes show up instantly with no build step.
• Verified the sandboxed preview mechanism (iframe srcdoc, script execution) with real headless-browser tests, confirming generated code actually ran safely instead of assuming it worked.

skillsmith (github.com/marcosmodly/skillsmith) | TypeScript, Node CLI, Claude API, npm package

• Built and published an open-source CLI that turns a description of desired expertise into a real Claude Skill, running a structured interview, drafting the files, and validating the result against written authoring standards, so the output stays consistent instead of a single unchecked LLM pass.
• Shipped the tool two ways from one codebase, a CLI that calls the Claude API and a native in-product skill that runs with no API key, backed by 19 unit tests and strict TypeScript, and confirmed it with a real npm-pack-and-install round trip.

Grandma's Lighthouse | Godot 4, GDScript

• Built a five-room puzzle game where the player restores color to a lighthouse, with save and load, room transitions, and audio synthesized entirely in code, shipping with zero external art or sound assets.
• Wrote a breadth-first solver that proves every room is solvable and free of soft-locks, using it as a design tool to reject bad layouts before building them, so every shipped room is guaranteed completable.
• Built a palette system that enforces measured contrast between floors, objects, and furniture, keeping every room readable in both the desaturated and restored states.
• Wrote 19 automated headless checks that catch parse errors, unreachable exits, and unsolvable layouts, keeping broken layouts from ever reaching a shipped build.
• Directed Claude Code as the implementer across the project and ran external playtests, driving three rounds of difficulty rework based on real player feedback.

Bachelor of Science in Architecture (Undergraduate) | Pangasinan State University | 2021 – Present

Developed precision, structured problem-solving, and systems thinking through technical drafting and digital documentation. Self-taught in full stack web development and AI systems since.