Projects / 16
A running archive of products, developer tools, public-data systems, and technical learning work.
Selected work
The hub for a connected set of first-principles technical learning guides — a 5-act ladder (Code → Specialize → Build → Prep → Practice) linking every guide plus SoloMock and Shipyard into one path from absolute beginner to job-ready.
Selected work
Realtime voice English tutor — practice spoken English with an AI partner over scenarios like ordering coffee, doctor visits, and salary negotiation, with grammar corrections after every turn.
Selected work
Verbal mock-interview app — talk through coding problems out loud with an AI interviewer over realtime voice, get instant feedback.
Build note
Built FastAPI backend with PostgreSQL, Redis caching, and tiered rate limitingSelected work
Live US fuel-economics site — an interactive map of all 50 states + DC with daily AAA averages, plus a full toolkit of state and metro pages, a trip cost calculator, an EV-vs-gas suite, and gas-tax, border-gap, and affordability analyses.
Selected work
Production site for a Bay Area roofing contractor (Reachspan AI client) — English/中文/Español, 22 local-SEO city pages, instant roof-measurement estimates, and an AI chat agent that hands off to a real booking calendar.
Build note
Shipped a buildless HTML + Tailwind site with English/中文/Español homepage twins and 22 city landing pages (11 cities × EN/中文) kept in sync by build scripts — every URL indexed by GoogleProject archive
A zero-to-programming foundational on-ramp guide — the prerequisite track the other Throughline guides link to, taking absolute beginners from nothing to ready-to-specialize.
Build note
Authored a first-principles, read-top-to-bottom introduction to programming for readers with no prior experience, serving as the shared entry point for the specialization guidesSelected work
A 2026 web dev guide turned into an interactive course — 17 chapters plus a capstone, ~700 quiz questions, mandatory checkpoints, and progressive chapter unlock.
Build note
Built a sampled-quiz engine with a ~700-question bank, per-session seeded shuffling, and localStorage stateSelected work
A 2026 AI engineering guide — 18 chapters from how LLM systems actually work to shipping evaluated production AI, with interactive checkpoint quizzes and runnable in-browser Python challenges.
Build note
Authored 18 chapters spanning LLM foundations, project lifecycle, the modern AI tech stack, solo/startup/enterprise workflows, decision frameworks, production patterns, and career pathsSelected work
A 2026 security engineering guide — 14 chapters of offensive and defensive security, from the attacker's mindset to a job-ready security engineer, with interactive checkpoint quizzes and hands-on code challenges.
Build note
Authored 14 chapters across 7 parts — cryptography, application security (OWASP Top 10), secure SDLC, offensive testing, detection & response, incident forensics, cloud/identity, governance, and the new AI attack surface (prompt injection, LLM Top 10, AI red-teaming)Project archive
A 2026 first-principles cloud engineering guide — from cloud foundations and core services through Infrastructure-as-Code, Kubernetes, CI/CD, SRE, and platform engineering.
Build note
Authored all 11 chapters — cloud foundations, core services, Infrastructure-as-Code, Kubernetes, CI/CD & GitOps, observability & SRE, platform engineering, cloud security, FinOps, MLOps/LLMOps, and scale/careerProject archive
A 2026 first-principles data engineering guide — how data moves from raw source to trusted, query-ready tables: storage & file formats, SQL & query engines, modeling & warehousing, Spark, ingestion/CDC, dbt, orchestration, streaming, and the lakehouse.
Build note
Authored all 12 chapters — foundations, storage & formats, SQL & query engines, modeling & warehousing, Spark, ingestion & CDC, dbt, orchestration, streaming (Kafka), the lakehouse, data quality & governance, and careerProject archive
A guided platform where you build a portfolio-grade project and get it AI-graded (Claude-as-judge) — the 'Build' act of Throughline, with a teaching-first coaching loop instead of a pass/fail gate.
Build note
Designed a guided build-and-grade flow that walks a learner through shipping a real, portfolio-grade project, then grades the result with an LLM-as-judge rubric (Claude-as-judge)Selected work
Landing site for an AI-infused digital marketing service — listens across Reddit, IG, FB, and Nextdoor, scores buying signals in real time, and engages warm leads. Performance-priced, no retainer.
Build note
Designed and shipped a single-file Tailwind + HTML landing with alternating warm-dark hero and cream content sections; custom display/mono typography and scroll-reveal motion throughoutProject archive
Zero-to-hero interview prep — 108 lessons across 17 phases, including AI-era interview rounds (AI-assisted coding, FDE decomposition, RAG, agent and eval design). Companion to SoloMock.
Build note
Authored 108 lessons across 17 phases from foundations through DP, system design, AI-era interview rounds (2024–2026 formats), AI-product engineering, frontend, and behavioralProject archive
Single-page roadmap from zero to a working 2026 web-dev stack — 12 stages across JS, HTML/CSS, browser JS, Git, TypeScript, React, Tailwind, and the modern toolchain.
Build note
Authored 12 sequential learning stages with time budgets, references, and concrete deliverables