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Zia Ur RehmanZR
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Zia Ur Rehman

@ziaurrehman2

Full Stack Ruby on Rails engineer scaling production Rails and React systems for global teams.

Pakistan
Message

What I'm looking for

I’m looking for a team where I can build and scale production Rails/React systems—modernize legacy code, design REST/GraphQL APIs, and ship user-focused features with TDD, CI/CD, and measurable performance wins.

I’m a Full Stack Ruby on Rails Engineer with 4+ years building and scaling production Rails 5/7/8 and React systems for global remote teams. I modernize legacy Rails monoliths, then ship user-focused features end-to-end with TDD (RSpec), CI/CD, and performance optimization.

Across my work, I’ve architected real production platforms—like a tri-party software escrow platform shipped from scratch to production on Rails 8 with Hotwire, PostgreSQL, Solid Queue, and RBAC, plus bilingual Arabic/English UI with full RTL support. I also design service-oriented REST and GraphQL APIs, including release-approval pipelines with audit-ready state machines and compliance-minded logging.

I thrive in distributed Agile teams across US and UAE timezones, and I’m comfortable integrating complex external systems—from CRMs to payment, messaging, and healthcare APIs. Today, I’m focused on building reliable multi-tenant products (including my Pakistan-based agency work and live SaaS), where clean domain boundaries, secure integrations, and measurable impact matter.

Experience

Work history, roles, and key accomplishments

AG
Current

Founder & Lead Engineer

AgencyPortal

Jan 2025 - Present (1 year 4 months)

Built a multi-tenant Rails 8 SaaS for Umrah travel agencies with custom-domain tenancy and Pundit RBAC; normalized 12+ supplier integrations into unified services and cut end-to-end sync to 1 minute. Designed a booking state machine with audience-aware hold timers and a double-entry ledger for stacked markups, and deployed via Kamal to Hetzner with Cloudflare and Caddy.

Education

Degrees, certifications, and relevant coursework

NC

Namal College

Bachelor of Science, Computer Science

Grade: GPA: 3.5

Earned a Bachelor of Science in Computer Science from the Namal College Associate College program affiliated with the University of Bradford (UK).

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