Product systems

Full-stack

AI workflows

Applied

Delivery style

Builder-led

Nathan Gwyn · Full-stack and AI

Software that feels fast, useful, and alive.

I build polished web products, backend systems, and practical AI workflows for teams that need momentum without duct-taping the future together. Clean interfaces, solid architecture, real outcomes. Wild concept, apparently.

Live Greeting from Nathan's AI

Agent demo

Live

See a plain model become an agent with controlled tools.

A traditional LLM works from the information available to it: training data, instructions, and the context you provide. It can reason, write, summarize, and explain, but it cannot search the web, check live systems, or interact with the outside world by itself.

The useful part is the software around the model. Builders like me connect LLMs to real systems: APIs, databases, files, search, calendars, dashboards, and workflows, while keeping control over what the model can request and what actually runs.

This demo shows that idea with two simple tools: live web search and weather lookup. Turn on Agent Mode, ask something current, and watch the runtime validate the request, run the tool, trace the flow, and feed fresh context back into the final answer.

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Response

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Capabilities

Build the product, wire the systems, give the AI a real job.

The sweet spot is practical: interfaces people like using, services that do not fall over, and automation that removes actual drag instead of becoming another toy dashboard.

Product engineering

Next.js, React, TypeScript, mobile surfaces, dashboards, admin tools, and practical UI systems that can survive real users.

Backend and cloud

APIs, data models, auth, S3, CloudFront, PostgreSQL, Prisma, workers, integrations, and the boring reliability work that actually matters.

AI implementation

Private AI adoption, prompt systems, agent tooling, evaluation loops, OpenAI/Anthropic APIs, and internal automation that earns its keep.

Stack

Familiar tools, sharp edges included.

This is the working set I reach for when the job calls for fast iteration, clean interfaces, and systems that have to keep behaving after launch day.

TypeScriptPythonGoC#ReactNext.jsAngularSvelteKitNode.jsFastAPIDjangoPostgreSQLMongoDBRedisPrismaSupabaseClerkOpenAI APIsAnthropic APIsMCPCodexOpenClawLinuxAWSCloudflareS3CloudFrontDockerKubernetesVercelGitHub ActionsTailwind CSSThree.js

About

Builder first, developer second.

about/nathan.ts
class Nathan { role: string; vibe: string; caffeineLevel: string; constructor() { this.role = "Full-Stack Engineer"; this.vibe = "builder-first"; this.caffeineLevel = "dangerously optimized"; } frontend(): string[] { return ["React", "Next.js", "TypeScript", "Tailwind", "Three.js"]; } backend(): string[] { return [ "Node.js", "Python", "FastAPI", "Flask", "Django", "Ruby", "Rails", "Postgres", "Prisma", "Supabase", ]; } aiStack(): string[] { return [ "OpenAI APIs", "Anthropic APIs", "MCP", "RAG", "Vector Search", "LangChain", "Hugging Face", "Ollama", "llama.cpp", "Prompt Systems", "OpenClaw", "Cursor", "Claude Code", "OpenCode", "GitHub Copilot", "Codex", ]; } ship(feature: string): string { return `${feature} shipped with tests, telemetry, and minimal drama.`; } debug(issue: string): string { return `Fixing ${issue}... probably with logs, coffee, and spite.`; } }

I like making things that feel clean, fast, and just a little bit cursed in the best way.

Sometimes that means shipping polished product work. Sometimes it means disappearing into an idea at 1 a.m. and coming back with something surprisingly real.

This site is home base for all of it: projects, experiments, Twitch, side quests, and whatever weird thing I'm building next.

Support

If the work helps, you can support future builds.

Contributions help fund tooling, experiments, open resources, and deeper AI/dev systems content. Totally optional, always appreciated.

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