I turn ideas into smooth, scalable products enhanced by AI, built with strong testing, clean architecture, and responsive design that drive performance and engagement.
Zia Ur Rehman
FullStack Software Developer with 4+ years of experience delivering high-performance web applications across real estate, healthcare, e-commerce, and call-center industries. Proficient in Ruby on Rails, React, and Django, with expertise in RESTful/GraphQL API design, MVC architecture, and both relational (PostgreSQL, MySQL) and non-relational (Firebase, Redis) databases.
Skilled in building real-time communication systems with ActionCable, WebSockets, and Hotwire/Stimulus, and integrating HIPAA-compliant healthcare solutions with HL7 APIs. Adept at modernizing legacy platforms, optimizing system performance, and designing scalable architectures that support seamless integrations and long-term growth.
My Resume4+
Years Experience
15+
Projects Delivered
4+
Live Products
150+
Features Integrated
3+
Production Experience
24/7
Support Available
Currently Working On
Model Context Protocol (MCP)
Building specialized servers and web apps that bridge AI models with local data sources and third-party APIs for secure, context-aware interactions.
AI-Driven Automation
Architecting intelligent chat systems and workflows that leverage LLMs to automate complex task management and multi-channel data handling.
Modern Rails UX (Hotwire/Turbo)
Deep-diving into Turbo Streams and Stimulus to build reactive, real-time interfaces that minimize JavaScript overhead and maximize performance.
Scalable System Architecture
Optimizing Rails performance through service-oriented design, background processing strategies, and custom scaffolding to ensure long-term maintainability.
Achievements
Full-Stack Engineer | California – Remote
Ecolink – Communication Platform for Insurance Agencies
Dec 2024 – Present
- Architected multi-tenant real-time workflows using ActionCable and Turbo Streams for live call routing and compliance logging.
- Integrated and enhanced complex CRM ecosystems including RingCentral, AMS360, and Applied EPIC.
- Automated bi-weekly user reporting via a custom Slack bot (PDF/CSV), reducing manual data compilation by 80%.
- Adopted a TDD approach with Stimulus and Agile methodologies to ensure high-velocity, bug-free feature delivery.
Full-Stack Engineer | Texas – Remote
Intellirent – Real Estate & Rental Marketing
Jan 2023 – Dec 2024
- Revamped a 10-year-old legacy PDF system, achieving a 77% memory reduction and 63% faster execution, verified by Scout APM.
- Built automated fraud/identity checks via Experian APIs, reducing manual verification time by 90%.
- Redesigned React front-end with GraphQL integration, reducing API load by 40% and improving responsiveness by 55%.
- Refactored legacy Rails architecture using DRY principles, delivering 33% performance gains and 20% lower server costs.
Software Engineer | Singapore – Remote
Biomark – Healthcare Connectivity Platform
June 2022 – Jan 2023
- Developed HIPAA-compliant data pipelines using HL7 APIs, reducing manual data processing by 47%.
- Designed modular healthcare microservices and automated onboarding, boosting developer efficiency by 30%.
- Applied Rails best practices for separation of concerns to build a foundation for scalable, secure API architecture.
Software Engineer | Wilmington – Remote
SaaS LTV Growth – E-commerce Revenue Optimization
June 2021 – June 2022
- Migrated REST endpoints to Shopify GraphQL API and implemented GitHub Actions CI/CD, reducing server load by 36%.
- Optimized Redis batch processing to eliminate N+1 queries, improving overall resource utilization by 43%.
- Reduced Largest Contentful Paint (LCP) by 72% through strategic Redis caching and database query optimization.
- Developed subscription management workflows for merchant plan upgrades and usage tracking, stabilizing recurring revenue.
Projects
EcoLink is a cloud communications platform integrating RingCentral with agency management systems like AMS360, enabling seamless call routing, SMS, voicemails, and compliance for insurance agencies.
Intellirent is a B2B paperless transactions software for residential leasing. Automated rental marketing and tenant screening software providing secure paperless transactions for residential leasing.
PC enabling merchants to offer unlimited product customization, including custom fields like engravings, color swatches, image uploads, and more, with interactive visuals and premium upcharges, boosting revenue and personalization.
BioMark is a platform that helps patients, doctors, and labs stay connected and updated with secure data transmission between them.
Local Serv is an AI-powered service marketplace that enables customers to seamlessly book and purchase local services such as car washing and home renovation through natural AI-driven conversations. Built with Databutton, it showcases rapid prototyping with generative AI—transforming service discovery into an intuitive, conversational experience.
Skills
I have extensive experience working with a variety of technologies as a developer. I've developed and maintained multiple projects using these technologies, and I'm always eager to learn more.
Languages
Ruby
Python
Dart
JavaScript
TypeScript
Frameworks & Libraries
Rails
Django
React.js
Flutter
Material-UI
Bootstrap
Tailwind CSS
Databases
PostgreSQL
MySQL
Firebase
Redis
Cloud & DevOps
AWS
Heroku
DigitalOcean
Docker
Jenkins
Tools & APIs
Shopify API
GraphQL
Ngrok
Postman
Work Experience
Devsinc
Senior Software Engineer
Jan 2024 – Present
Intellirent
Full Stack Software Engineer
Jan 2023 – Dec 2024
Biomark
Software Engineer
June 2022 – Jan 2023
Saas LTV Growth Fund
Software Engineer
June 2021 – June 2022
Let's Build Together
Share what you need, whether it’s a new build, integration, automation, deploy, or bug fix. You’ll hear back from me within one business day.