Zeeshan H.

I build the integrations that move data between systems that were never designed to talk to each other — EDI (EDIFACT and X12), EHR and healthcare data, CRM migrations, and custom APIs.

20 years in software, the last six focused on integration delivery. $700K+ earned on Upwork, 25,000+ hours, 99% Job Success, Top Rated Plus.

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WHAT I ACTUALLY GET HIRED FOR

▪ EDI — EDIFACT (DESADV, CODECO) and X12, with custom message mapping
▪ Healthcare data — EHR to practice management system integration
▪ Format conversion — Excel/CSV/XML pipelines between platforms
▪ CRM migration & customization — SuiteCRM, SugarCRM, HubSpot
▪ Custom REST APIs, webhooks and third-party integrations
▪ Laravel and PHP backend development

WORK CURRENTLY RUNNING

▪ Excel-to-EDIFACT (DESADV) converter connecting a freight logistics operator and a global industrial manufacturer — in production since 2022, still under active contract
▪ CSV transformation layer moving patient data from an EHR into a practice management system — 5.0 rating, ongoing
▪ SuiteCRM customization and migration for a mortgage management firm
▪ PHP backend and API integration work for a SaaS product team

Several of my contracts have run for three years or more. Integration work tends to be like that — once the data is flowing correctly, clients keep coming back with the next system.

TECHNICAL

Integration & Data
EDI (EDIFACT, X12), XML, CSV/Excel pipelines, REST APIs, webhooks, data migration, MySQL

Backend
PHP, Laravel, CodeIgniter

CRM
SuiteCRM, SugarCRM, HubSpot

Frontend
React, Next.js, JavaScript, TypeScript

Cloud & DevOps
AWS, DigitalOcean, CI/CD, server management

Automation & AI
n8n, OpenAI API, RAG systems, AI-driven workflows

Healthcare Data
EHR to practice management integration, patient data transformation

HOW I WORK

I use AI-assisted tooling day to day for research, debugging and scaffolding, which shortens delivery time considerably. It does not replace engineering judgement — every implementation is reviewed, tested and structured around the actual requirements before it ships.