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. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 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. On integration projects specifically, I confirm the message spec, the sample files and the acceptance criteria before writing code. Most failed integrations I have been brought in to rescue failed on unclear scope, not on difficult code. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Send me a message with the systems you need connected and the format you are working with. I will tell you whether it is a fit, and roughly what it takes, before you spend anything.