Amirhossein Hosseinpour
Senior Full-Stack Engineer and Co-Founder, Pigment Dev
Sari, Iran · UTC+3:30 · Remote since 2015
- Emailits@amirhp.com
- Phone+1 720 778 1755
- Phone+98 911 862 9342
- Webamirhp.com
- LinkedInlinkedin.com/in/amirhp-com
- GitHubgithub.com/amirhp-com
Summary
Senior full-stack engineer and founder, building for the web since 2015. Deep in WordPress and WooCommerce: plugin architecture, HPOS-compatible order data, hooks other developers build on, and the caching, database and server layers underneath. Around that, Node and React applications, Python automation, and native macOS development in Swift. Co-founder at Pigment Dev and Pepro Dev, head of development at Pigment Agency.
Working remotely since 2015, currently with teams and clients across Europe, Asia, Africa and the Americas. I turn loose specs into testable plans, refactor legacy WordPress code into maintainable plugins, and write the documentation that keeps them supportable.
Highlights
- Ultimate Invoice, the open-source WooCommerce invoicing plugin I lead at Pepro Dev, runs on 5,000+ sites with a 4.8 rating from 34 reviews, and has shipped releases continuously since 2020.
- 10 plugins published on WordPress.org, 195,000+ downloads across them, and 83 public repositories on GitHub.
- Traced a production outage on a shared-hosting store to an unloaded OPcache and an unindexed search path, bringing account CPU from 100/100 to about 15/100 in one day.
- Migrated twelve production sites from cPanel to HestiaCP on a single VPS, with Redis, per-site cache prefixes, off-provider backups and Worker-based monitoring.
- Taught WordPress e-commerce development at Iran's TVTO eLearning Center: over 30 students, more than 90% earned the diploma with scores above 80.
Experience
Pigment Dev
to present
Co-Founder and Lead Developer
Remote
- Co-founded a WordPress plugin studio and lead its product and engineering work, from concept through release and support.
- Shipped Ultimate Integration for Telegram and Gravity Forms OTP Verification, both public on WordPress.org.
- Built the licensing layer behind our commercial products: HMAC-SHA256, domain-locked rotating tokens and plan tiers.
Pigment Agency
to present
Head of Development
Istanbul, remote
- Own technical direction across client projects: stack selection, architecture, infrastructure and hands-on development.
- Migrated twelve production sites from cPanel to a single HestiaCP VPS, including a Node and pm2 application and an SSO service, with a documented, repeatable checklist.
- Built Cloudflare Worker uptime monitoring with KV state, Telegram alerting, downtime duration tracking and stale-backup detection.
Pepro Dev
to present
Co-Founder
Remote
- Co-founded a product team building WordPress and WooCommerce plugins: free plugins on WordPress.org and Pro plugins for sale. I lead development on its largest product.
- Ultimate Invoice: 5,000+ active installs, 4.8 rating, 190+ documented filter hooks, full HPOS compatibility, and a security fix (CVE-2025-54869) handled through Patchstack under a disclosure deadline.
BlackSwan Development
to present
Founder
Remote
- My open-source label. Native macOS utilities in Swift, Windows tools, Firefox add-ons and WordPress plugins.
- TunnelGuard, a macOS split-tunnel manager, released under GPL-3.0 with documentation; now at 2.7.0.
Pepro Studio
to
Technical Development Lead
Tehran, remote
Technical Support Engineer
to
- Led technical development of the studio's WordPress products, covering plugin architecture, code quality, feature planning and long-term maintenance.
- Before that, handled over 200 support requests a month from a global user base, which is where I learned what users actually do with a plugin.
Nowruz Technology Development Group
to
Lead WordPress Developer
- Led WordPress development across several startups in the group, including AzKetab, SellerYar, Roozbahan Publication and PTKD.
SellerYar
to
Senior WordPress Developer
- Built the academy's custom WordPress learning platform (SellerYar LMS) for one of Iran's leading marketplace-seller services, and supported the main site.
Iran TVTO eLearning Center
to
Web Design Instructor
- Taught web design and WordPress e-commerce development to over 30 students. More than 90% earned the official diploma with final scores above 80.
Ponisha
to
Freelance Software Engineer
- Completed over 60 freelance projects: plugin development, theme customisation, performance work and full builds.
Basirat English Institute
to
English Instructor
- Taught English to over 350 students at A2 to B1 level. Named most active teacher of the year twice.
Selected open source
Ultimate Invoice5,000+ sites · 4.8 from 34 reviews
WooCommerce invoices, packing slips and labels. Published by Pepro Dev; I lead its development and maintenance.
Receipt Uploader for WooCommerce1,000+ sites · 5.0 from 14 reviews
Customers upload a bank-transfer receipt; the shop approves it from the order screen.
Ultimate Integration for TelegramPigment Dev · WordPress.org
WordPress and WooCommerce events sent to Telegram as messages you write.
TunnelGuardSwift · v2.7.0 · GPL-3.0
A Mac menu bar app that keeps the sites you choose off your VPN.
upload-url-to-serverPHP · 17 stars
One PHP file that pulls a URL onto your server, then deletes itself.
Firefox add-ons5 since 2017 · 4.6 average
Browser add-ons, published on addons.mozilla.org.
Every project, with its status and release history: amirhp.com/open-source
Skills
- Expert
- PHP, WordPress, WooCommerce (HPOS), MySQL, JavaScript (ES6), HTML and CSS
- Proficient
- Node.js and Express, React, PWA, REST API design, Linux administration, cPanel and WHM, HestiaCP, LiteSpeed, Nginx, Redis, OPcache tuning, Cloudflare (Workers, KV, DNS, WAF), Telegram Bot API, Google Apps Script, Elementor, Gravity Forms, Contact Form 7, WPML
- Working
- Swift and SwiftUI, PostgreSQL, Python, MongoDB, AutoIt, Firefox WebExtensions, LaTeX
- Practices
- Spec-first development, semantic versioning and changelogs, responsible disclosure through Patchstack, internationalisation and RTL, documentation, mentoring
Education
MA, Teaching English as a Second Language
Islamic Azad University · 2019 to 2021
BA, English Translation
Payame Noor University · 2014 to 2018
Certifications
WordPress-based Web Development
Iran Technical and Vocational Training Organization · 2023
International Computer Driving Licence
Iran Technical and Vocational Training Organization · 2018
Community
WordPress
Plugin developer and Persian translation editor since 2022
Mozilla
Firefox add-ons developer since 2017
Adobe
Two XD plugins, Justify It and Lorem Saz, now archived
Google
Maps Local Guide, level 6
A major regional marketplace
WooCommerce reseller API integration, under NDA
Iran WP Academy
Founder, 2020: a Persian school for plugin development
SariGap
Helps run a meetup of developers and designers in Sari
Languages
Persian
Native
English
Fluent, with an MA in teaching it
Recommendations
He is responsive, detail-oriented, whip smart, and a pleasure to work with. I recommend him without reservation for any technical needs your business might have.
He is a ninja developer who will amaze you by speed and quality of delivery.
Both on LinkedIn.