I build productsfrom idea to market.

Eight in production across voice AI, fintech, marketplaces and civic data. Currently taking on client work.

I'm Harry, a founder and engineer in New York. I build products end to end: interface, backend, the AI layer, and the infrastructure they run on.

Most were my own ventures, so the job included latency budgets, unit economics, compliance and App Store review alongside the build. I take on a few client projects at a time.

AI agents & automationVoice AI & telephonyFull-stack web (Next.js)Native iOS & AndroidData pipelines & APIsCloud infrastructure

8: In production
6X: Founder
NYC: Based in New York

Selected work

Products I've shipped.

Each one is my own venture, built and run end to end.

Callcove

Live

Callcove

AI receptionist platform

Inbound and outbound voice AI. Business SaaS plus a developer API, running real-time telephony under a strict latency budget.

Voice AISaaSDeveloper API

hedg3

Live

hedg3

Market data & alerting

Live market data, analyst-grade rankings and an alerting engine for self-directed investors. Web, PWA and native iOS/Android.

FintechReal-time dataMobile

BetterAttachment

Live

BetterAttachment

AI journaling app

Journaling that surfaces patterns in relationships. Next.js on the web, Capacitor shells on iOS and Android.

Consumer AIMobileHealth

Building Status NYC

Live

Building Status NYC

Violations & permits lookup

Open violations, permits and complaints on any NYC building, in one search. Built for landlords, filing reps and property managers.

Civic dataPWANYC

QuickKey

Live

QuickKey

Locksmith marketplace

Customers post jobs, vetted locksmiths accept them. Matching, payments and dispatch across both mobile apps.

MarketplacePaymentsMobile

GrantsExplained

Live

GrantsExplained

Federal grant search

Search federal grant programs, explained in plain English and linked back to official sources.

Civic AISearchNext.js

Inwood Local

Live

Inwood Local

Site for a Manhattan wine bar

Editorial site replacing a white-label template, with ordering left where it already worked.

Brand siteHospitalityNext.js

BuildMatch

In progress

BuildMatch

Contractor marketplace

Homeowners post a project and deposit, a matching engine ranks vetted contractors. Web plus native iOS and Android.

MarketplaceMatching engineMobile

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Have something to build?

Four steps, about two minutes.

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