Available for hire · United States

Hire a Full-Stack Developer in the USA

HL7 hospital integrations. SEC-regulated fintech. Shipped for US clients.

I'm Waseem Ahmad, a full-stack developer and AI engineer shipping for US clients since 2022. For Fukuda Denshi USA I built an HL7 IoT gateway that processes 10,000+ clinical messages a day from 200+ hospital monitors at 99% delivery, and for a US fintech startup I delivered an SEC Reg CF crowdfunding backend with 248 passing tests and zero production bugs. The timezone works in your favour: your morning is my evening, so we talk in real time at the start of your day — and finished work lands overnight, ready for review each morning.

Based in Pakistan (UTC+5, no daylight saving) — I hold my evenings for US clients. The live window covers roughly 8am–12pm ET, which is 7am–11am Central, 6am–10am Mountain, and the early Pacific morning.

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55+
Projects Shipped
100%
Job Success
Top Rated Plus
On Upwork

The challenge

US teams that go offshore often get silence: no updates, unclear progress, and quality surprises at the end. My process is built against that — written updates as work progresses, a demo of working software every week, and the discipline of regulated work (HIPAA healthcare, SEC-regulated fintech) applied to everything I ship.

What I build

Full-Stack Web Applications

Next.js, React, and Node.js applications built end to end — from data model and API to a deployed, documented product.

Healthcare & HL7/FHIR Integration

Regulated healthcare systems, including an HL7 gateway that processes 10,000+ clinical messages a day from 200+ hospital monitors.

Fintech & Regulated Backends

Compliance-heavy backend engineering, including an SEC Reg CF crowdfunding platform shipped with 248 passing tests and zero production bugs.

AI Features & Integrations

LLM-powered product features, such as the Claude AI capabilities built into the Continuity M&A marketplace.

Marketplace Platforms

Two-sided marketplaces from schema to launch — Continuity (M&A deals) and HomeBrigadier (UAE services) are both live today.

APIs & System Integration

REST APIs, webhooks, and third-party integrations delivered with documentation and automated tests.

Tech stack

TypeScriptNext.jsReactNode.jsPostgreSQLSupabasePrismaStripeHL7 / FHIRClaude APIDockerAWSVercel

Which of my builds proves this

HL7 IoT Gateway — Fukuda Denshi USA

Clinical integration gateway processing 10,000+ HL7 messages a day from 200+ hospital monitors at 99% delivery.

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Fintech Escrow & Event-Sourced Ledger Backend

Regulated fintech backend for a US startup — 248 passing tests, 28 database models, zero production bugs.

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ScamMinder

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How we work

Most MVPs ship in 3–6 weeks; complex platforms are scoped individually once the requirements are clear.

01

Intro Call

A 30-minute conversation about your project, goals, and timeline. No commitment either way.

02

Scoped Proposal

A written scope, architecture outline, and quote. I respond to every message within 24 hours.

03

Weekly Demos

You see working software every week, with written progress updates in between. No black boxes.

04

Ship & Handover

Deployment, documentation, and a clean handover — you own everything I build.

Compliance & standards

HIPAAHL7 v2 / FHIRSEC Reg CF

Frequently asked questions

How does the timezone work with US teams?
Pakistan is UTC+5 and does not observe daylight saving, so it sits 9–10 hours ahead of Eastern, 10–11 ahead of Central, 11–12 ahead of Mountain, and 12–13 ahead of Pacific — the gap narrows by an hour when the US moves to daylight time, since I don't shift. I hold my evenings for US overlap. In your clock terms that live window is roughly 8am–12pm Eastern, 7am–11am Central, 6am–10am Mountain, and the early Pacific morning, where 7–9am PT works well for standups. Everything outside it runs async, so you review finished work at the start of each day rather than waiting on it.
Have you actually worked with US companies, or just US-facing ones?
Directly, and both engagements are documented on this site. For Fukuda Denshi USA I built the OpenConnect HL7 gateway that ingests 10,000+ clinical messages a day from 200+ hospital monitors at a 99% delivery rate, running on-premise inside hospital infrastructure under HIPAA constraints. For a US fintech startup I delivered an SEC Reg CF crowdfunding backend — an event-sourced ledger, a six-state escrow machine, 28 database models, and a 248-test suite, shipped with zero production bugs. Both are regulated environments where being approximately right is not acceptable, which is a useful thing to have already survived before you hire someone.
What paperwork does a US company need to engage a contractor abroad?
Less than most teams expect. I work as an independent contractor supplying services from Pakistan, not as an employee, and your finance team will almost certainly have a standard path for foreign contractors already — typically a Form W-8BEN on file in place of the W-9 a domestic contractor would give you. How that flows through your own reporting and withholding is a question for your accountant rather than something I can determine for you; what I can say is that the arrangement is an ordinary one and nothing about it should be novel to them. Contracts run either as a direct services agreement with milestones or through Upwork, where escrow and payment protection sit with the platform.
How is pricing handled for US clients?
In dollars, which removes a complication other markets have — quotes are issued in USD and paid in USD, so there is no exchange-rate movement between the quote and the invoice. The starting figure noted below is USD. After the intro call you get a fixed written quote covering deliverables, architecture, and timeline, and that number does not move mid-project. Payment is by bank transfer, Stripe, or through Upwork if you would rather have escrow in the middle, which some US teams prefer for a first engagement before moving to direct invoicing.
How does an engagement start?
With a short intro call — 30 minutes to talk through what you're building and whether I'm the right fit. If we're aligned, you get a written, scoped proposal covering deliverables, architecture, and timeline. I respond to every enquiry within 24 hours.
How does communication work day to day?
Written updates as work progresses, a demo of working software every week, and async-first communication over email or Slack. You always know what was done, what's next, and what's blocking — without scheduling a meeting to find out.
How do contracts and invoicing work?
A straightforward services agreement with milestones, or a contract through Upwork if you prefer escrow and their payment protection. Payment by bank transfer, Stripe, or through Upwork.
Who owns the code and intellectual property?
You do. Full IP ownership transfers to you — source code, documentation, and infrastructure configuration. Repositories are set up under your organisation's control from the start wherever possible.
What does an engagement typically cost?
Most engagements start around $5K; smaller well-scoped work is considered case-by-case. After the intro call you get a fixed, written quote — no surprises mid-project.

Ready to start?

Book a free 30-minute call. No sales pitch — just a direct conversation about your project.

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Or email: contact@waseemahmad.dev