Ruby on Rails Developer in Pakistan

Open to global remote roles and onsite opportunities in Pakistan

Zia Ur Rehman

Full‑Stack Software Engineer (Ruby on Rails + React) based in Pakistan, with 4+ years shipping production systems across real estate, healthcare, e‑commerce, communications, travel SaaS, and Saudi software escrow. I own features end‑to‑end and work remote with distributed teams across the US, UAE, and KSA.

Strong in performance work, real‑time features (ActionCable, Turbo, WebSockets), and complex integrations — HL7, Experian, RingCentral, AMS360, EPIC, Shopify. Recently shipped Escrow.sa (Rails 8 software escrow inside the KSA data‑residency zone) and built AgencyPortal end‑to‑end (multi‑tenant Umrah travel SaaS), pairing with Claude on day‑to‑day engineering to ship faster without cutting corners.

My Resume

4+

Years senior full‑stack

3

Production launches in 3 months

3

Timezones — US · UAE · KSA

20+

Production integrations shipped

Currently Working On

AgencyPortal

Multi-tenant Umrah travel SaaS — actively shipping booking flows, supplier integrations, and per-agency analytics. Live at hasnaintravel.com.

EcoLink

Cloud communications platform for insurance agencies — building real-time call, SMS, and chat workflows on Rails 8 + ActionCable with RingCentral, AMS360, and EPIC integrations.

Cloth E-commerce

Personal side project — a modern clothing storefront exploring product catalog, cart, and checkout flows. Source on GitHub.

Achievements

Full-Stack Engineer | Riyadh – Remote

Escrow.sa — Software Escrow Platform for the Saudi Market

Mar 2026 – May 2026

Show 8 achievements

Architected a tri-party software escrow platform on Rails 8 + Hotwire with bilingual Arabic/English UI and full RTL support.
Built a Rails 8 platform that securely holds vendor source code and releases it to beneficiaries only when legally defined release conditions are approved.
Built an encrypted Forgejo Vault for source-code deposits with SHA-256 integrity checks and a senior-engineer manual review workflow.
Implemented a senior-engineer manual verification workflow where each deposit is downloaded, set up, run, reviewed, and approved before being marked as verified.
Designed a multi-stage release-approval pipeline (moderator → lawyer → super admin) using AASM state machines and PaperTrail audit trails.
Built multi-portal access for platform staff, vendors, and beneficiaries with role-based authorization using action_policy.
Added per-agreement encrypted environment variables so moderators can securely access the secrets needed to verify deposited software.
Provisioned the platform inside the KSA data-residency zone with KMS-backed per-agreement encryption and append-only audit logs on a separate database.

Founder · Lead Engineer | Pakistan — Self-directed

AgencyPortal — Multi-Tenant SaaS for Umrah Travel Agencies

Jan 2025 – Present

Show 7 achievements

Designed and shipped a branded agency platform that unifies live inventory and bookings from 12 supplier portals into one customer-facing interface.
Shipped a multi-tenant Rails 8 SaaS end-to-end with custom-domain → subdomain → apex tenant resolution and Pundit RBAC across super_admin / admin / agent roles.
Implemented per-agency landing pages, custom domains, markup pricing, hold timers, auto-cancel flows, and booking lifecycle management.
Built a portal-integration layer that normalizes 12 heterogeneous supplier APIs (cookie sessions, JWT SPAs, TOTP Selenium logins) behind common Fetcher / Booker / SessionManager services.
Designed a booking state machine with audience-aware hold timers and a double-entry ledger that stacks per-agent and per-portal markups on confirm.
Streamed Hetzner + Cloudflare metrics into the admin dashboard with threshold-based alerts so CPU, egress, and R2 limits surface before customers notice.
Deployed to Hetzner Cloud with Caddy (on-demand TLS for tenant domains), Cloudflare R2 storage, and nightly encrypted PostgreSQL backups.

Full-Stack Engineer | California – Remote

Ecolink – Communication Platform for Insurance Agencies

Dec 2024 – Apr 2026

Show 6 achievements

Designed multi-tenant real-time call, SMS, and chat workflows using ActionCable, WebSockets, and Turbo Streams for insurance agencies.
Integrated RingCentral, AMS360, and Applied EPIC into a unified communication and compliance platform.
Built a Slack reporting bot (PDF/CSV) that automated bi-weekly usage reports and cut manual reporting effort by ~80%.
Shipped a RingCentral Call Analytics Reporting Module with scheduled SendGrid email delivery, downloadable PDF reports, saved schedule views, and an aggregation service for daily/bi-weekly call metrics.
Built an AI call pipeline that converts audio into transcripts and summaries via an internal AI microservice with live ActionCable updates, reducing manual effort by ~50%.
Shipped Inteveo IQ, an AI-driven Priority Task Board that turns each transcribed call into prioritized actionable items (Growth / Maintenance / Relationship) with sentiment scoring and AI insights, boosting agent follow-up efficiency by ~90%.

Software Engineer | Wilmington – Remote

SaaS LTV Growth – E-commerce Revenue Optimization

Nov 2024 – Feb 2025

Show 4 achievements

Migrated key REST endpoints to Shopify GraphQL and added GitHub Actions CI/CD, reducing server load by ~36% and speeding releases.
Optimized Redis-backed background jobs to eliminate N+1 queries, improving overall resource utilization by ~43%.
Improved storefront performance by reducing LCP by ~72% via Redis caching and backend query tuning, and built subscription workflows that stabilized recurring revenue.
Built product customization workflows (engraving, swatches, image uploads), improving customer engagement by ~37% and boosting merchant revenue.

Full-Stack Engineer | Texas – Remote

Intellirent – Real Estate & Rental Marketing

Jan 2023 – Dec 2024

Show 7 achievements

Revamped a 10-year legacy PDF system in Rails, reducing memory allocations by 77% and execution time by 63% (Scout APM).
Integrated Experian-based fraud and identity checks, reducing manual verification time by roughly 90%.
Redesigned the React + GraphQL front-end, cutting API load by ~40% and improving responsiveness by ~55%, while DRY refactors delivered ~33% performance gains and lower server costs.
Engineered containerized microservices with AWS Lambda and Docker, cutting infrastructure costs by ~27% while enhancing scalability and deployment speed.
Restructured relational schemas with ActiveRecord, resolving memory issues (~23% improvement) while ensuring ACID compliance.
Enhanced frontend performance by ~15% via asset bundling and font caching.
Accelerated debugging by ~50% using structured logging and real-time monitoring tools such as Papertrail and Airbrake.

Software Engineer | Singapore – Remote

Biomark – Healthcare Connectivity Platform

June 2022 – Jan 2023

Show 6 achievements

Developed HIPAA-aware data pipelines using HL7 APIs for secure data exchange between labs, doctors, and patients.
Designed modular microservice-style components and automated onboarding flows, boosting developer efficiency by ~30%.
Helped establish a scalable Rails API architecture with clear separation of concerns and security in mind.
Designed secure backend workflows for patient-doctor-lab coordination, improving reliability and real-time data availability across systems.
Optimized background processing and operational workflows with Sidekiq and CI/CD practices to improve release consistency.
Collaborated with cross-functional teams to ship compliant healthcare features while maintaining delivery velocity.

Projects

Escrow.sa

Software Escrow & Compliance (KSA)

Tri-party software escrow platform for the Saudi market — holds vendor source code in an encrypted vault, verifies each deposit via senior-engineer review, and releases code to beneficiaries only when legally defined conditions are met. Bilingual Arabic/English with full RTL and Saudi data residency.

AgencyPortal (AI Umrah Portal)

Travel SaaS · Multi-Tenant

A self-serve booking platform for Umrah travel agencies. Pulls live availability and prices from 12 different supplier systems into a single dashboard, lets each agency set its own pricing and branded landing page, manages bookings with automatic hold and cancellation timers, and surfaces system health alerts so issues are caught before customers notice. Live in production.

EcoLink

Insurance Communications

Cloud communications platform for insurance agencies that connects RingCentral with AMS360 and EPIC to unify calls, SMS, voicemail, and compliance logging.

Intellirent

Real Estate & Rental Marketing

Paperless rental marketing and tenant screening platform used by residential leasing teams to collect applications, documents, and Experian-backed reports in one place.

Mindrift (Tendem Data Collection)

AI Data Operations

Contributed to Tendem data collection by running web scraping/parsing workflows with Apify and delivering clean, structured datasets for AI tasks.

Revelo (Behavioral Data Annotation)

AI Model Quality

Worked on Behavioral Data - Architecture & Strategy Annotation, evaluating strategy-level responses with structured rubrics to improve consistency and quality.

PC - Product Customization

SaaS & E-Commerce

Shopify app that lets merchants offer deep product customization (engraving, swatches, image uploads, pricing rules) with interactive visuals, boosting AOV and personalization.

Biomark

HealthCare

Healthcare connectivity platform that keeps patients, doctors, and labs in sync through secure, HL7-powered data pipelines and dashboards.

Local Serv

AI Automation

AI-powered service marketplace built with Databutton that lets customers book local services (car wash, home renovation, etc.) via conversational AI flows.

Testimonials

What my colleagues and peers say about working with me.

I managed Zia Ur Rehman and worked closely with him on real production features. He’s a reliable full-stack developer who consistently delivers solid work using Ruby on Rails and React. Zia handled backend logic, frontend updates, and deployments with minimal …

Azan Arif

Mob / Web / Application Development · AWS

I had the pleasure of working with Zia and can confidently say he is one of the most reliable and supportive engineers on a team. He is the kind of person who never hesitates to step in and help others, whether it’s solving a complex technical issue or unblock…

Salman Saeed

Ruby on Rails · Hotwire · Django · React · AWS (Co‑founder cto.sa)

I’ve had the chance to work with Zia, and it’s been an absolute pleasure. He is smart, reliable, and just genuinely great to work with. Whether it’s solving tough problems or helping teammates, Zia shows up with clarity, care, and a can-do attitude. It’s rare …

Rabbiya Noor

Software Engineer | ROR | React

Zia was a QA's dream at Intellirent. His clean Ruby on Rails code simplified test automation, while his robust RESTful APIs reduced edge cases by 40%. By modernizing legacy systems, he cut crashes by 33% and fixed N+1 queries that tripled our performance testi…

Abdul Wahab

Programme Officer · QA / UAT / Business Analysis

I highly recommend Zia ur Rehman as an excellent developer and a true team player. He consistently delivers high-quality work, approaches problems with a strong technical mindset, and is always willing to support teammates. His collaborative attitude and dedic…

Muhammad Ali Raza

Software Engineer · Full Stack (Nuxt/Next/Node/Nest)

Zia Ur Rehman was an amazing colleague, and person! He is very motivated and hard working and inspires the team. Zia has consistently overachieved his targets. I worked closely with Zia for, around, 3½ years during my Bachelors, he was always a professional, a…

Ali Raza Khan

SSE - Full Stack | Node.js | AWS

Skills

I have extensive experience working with a variety of technologies as a developer. Tap any skill to see where it's been used.

Languages

Ruby

Used in: Escrow.sa, AgencyPortal, EcoLink, Intellirent, PC - Product Customization, Biomark

Frameworks & Libraries

Databases

Cloud & DevOps

Tools & APIs

Work Experience

Escrow.sa

Full-Stack Engineer

Mar 2026 – May 2026

AgencyPortal (Self-directed SaaS)

Founder · Lead Engineer

Jan 2025 – Present

EcoLink

Full-Stack Engineer

Dec 2024 – Apr 2026

Devsinc

Senior Software Engineer

June 2022 – Present

Saas LTV Growth Fund

Software Engineer

Nov 2024 – Feb 2025

Intellirent

Full Stack Software Engineer

Jan 2023 – Dec 2024

Biomark

Software Engineer

June 2022 – Jan 2023

Let's Build Together

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Quick to reply.

I read every message myself. Expect a thoughtful response within one business day.

Based in Pakistan (PKT, UTC+5)

Comfortable overlap with US, UAE, KSA timezones