i. Charter · Flight for hire

AI features, shipped.

The same hands that build our own tools are open for a few client projects a year. Twenty years of engineering, AI at the core, delivered end-to-end — the model integration, the backend around it, the cost controls, the deploy. Not a prompt consultant. An engineer who ships.

№ 01 The short haul

AI Feature Sprint

"One feature, into your product, done."

You have a product. You want an AI feature in it — rewrite, summarize, extract, classify, chat, an agent that does real work. I design it, build it in your codebase, test it, and ship it. Structured output that never breaks your parser.

2–4 weeks · fixed price · working feature + tests + docs

№ 02 The instruments

LLM Cost & Reliability Layer

"Stop the model burning your budget — and your uptime."

Naive LLM calls cost money and go down. I build the gateway: model routing (cheap model for easy work, strong model for hard), a daily spend circuit-breaker, caching, retries, and forced-tool structured output. One place your whole app calls — cost-capped, provider-swappable.

1–2 weeks · an AI gateway your product routes through

№ 03 The long haul

RAG & Agent Systems

"Answers grounded in your data. Agents that act in your systems."

Retrieval over your documents and data, or a tool-using agent that does real work across your services. Vector search, chunking, grounding, guardrails — evaluated for accuracy, not demo-ware.

2–5 weeks · deployed, evaluated, connected to your data

№ 04 The whole aircraft

AI-Powered SaaS Backend

"The full machine behind an AI product."

Auth, usage metering, subscription billing (Stripe · LemonSqueezy · VietQR), quotas, admin, deploy. Built end-to-end — the same stack already live behind our own products.

scoped per project · production backend, payments included

№ 05 On call

Fractional AI Engineer

"Your part-time senior AI engineer."

Ongoing. A few days a month, on call for the AI work — new features, tuning, cost, reliability. For teams that need the capability but not a full-time hire.

monthly retainer · from $1,500 / month

ii. Flight log · Proof

Systems already in the air.

Production software I built and shipped solo — the proof the charter is airworthy.

DraftRight
AI writing tool across macOS, Windows, Linux, and mobile. Multi-provider LLM integration and live multi-method billing (Stripe + LemonSqueezy + VietQR) — a shipped, versioned product, not a demo.
AI Gateway
A Go microservice as the sole LLM egress: model routing, a Redis daily-token circuit-breaker, and forced-tool structured output — the exact cost-control layer teams ask for.
Moncar
A full production marketplace — clean architecture, payment rails, KYC, deployed to the cloud with driver and rider apps. Proof I ship real systems, end to end.
— Ready to fly —

Bring your product.
I'll tell you what's buildable.

One 30-minute call. No charge, no pitch deck — a straight answer on what AI can do for your product, what it costs, and whether it's even the right tool. If it's a fit, we plan the flight.

Start a project →