Open to opportunities

abdul rehman

@abdulrehman57

Message

Senior software engineer building scalable, high-performance web applications with Ruby on Rails and React.

Pakistan

Message

What I'm looking for

I’m looking for a role where I can build scalable, high-performance web systems end-to-end with Ruby on Rails, React, and cloud infrastructure—shipping stable features, optimizing performance, and collaborating closely with cross-functional teams.

I’m a senior software engineer with over 7 years of experience developing high-performance web applications. My expertise spans Ruby on Rails, ReactJS, and cloud infrastructure, and I enjoy turning complex requirements into scalable, reliable systems.

I’ve delivered core product features across multi-platform experiences, including architectures like conversation continuity to improve usability and reduce session drop-offs. I’m hands-on with designing RESTful APIs, GraphQL schemas, and Rails controllers for high-availability and performance.

Across my roles, I’ve focused on stability, user experience, and measurable improvements—profiling performance bottlenecks, optimizing API response times, and enhancing scalability. I’ve also built internal dashboard workflows to improve operational efficiency and collaborated closely with cross-functional teams, including ML and QA.

From payment integrations (Stripe, ApplePay) and third-party APIs (Google APIs) to end-to-end reliability with RSpec, Jest, and Cypress, I build with quality and maintainability in mind. I’m especially motivated by scalable systems design, performance optimization, and shipping robust features that teams can confidently run in production.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer (Rails/React)

Current

Hyly.AI

Sep 2024 - Present (1 year 9 months)

Designed and implemented core features across Hayley Voice, Hayley Mail, and Hayley Chat, improving platform-wide usability and functionality. Architected a conversation continuity system, optimized REST and GraphQL endpoints for high availability and performance, and built full-stack workflow features to improve operational efficiency.

Ruby on Rails React GraphQL REST API Development JavaScript jQuery Performance Optimization API Integration

Full Stack Software Engineer

Malindo GmbH

Apr 2021 - Sep 2024 (3 years 5 months)

Developed and maintained large-scale Ruby on Rails applications powering company web services. Built REST APIs and GraphQL resolvers to reduce frontend over-fetching, created reusable React components, improved API response time and scalability via performance profiling, and strengthened reliability with RSpec/Jest/Cypress testing.

Ruby on Rails REST APIs GraphQL React Performance Profiling HTML CSS JavaScript RSpec Jest Cypress

Ruby on Rails Developer

Jess

Jan 2020 - Mar 2021 (1 year 2 months)

Enhanced core platform modules for marketing analytics, including scrapers, trackers, and payment-related features. Integrated Stripe for secure payment processing and implemented Google/Facebook marketing APIs for audience segmentation and user activity tracking.

Ruby on Rails Stripe Marketing APIs Marketing Analytics Payment Processing Data Tracking

Backend Engineer

A10 Networks Inc.

Jun 2019 - Dec 2019 (6 months)

Built scalable backend services with NodeJS and NestJS using event-driven architecture, defining data models and working with MongoDB/PostgreSQL. Implemented secure JWT/OAuth authentication, wrote Jest/Mocha tests, and collaborated with DevOps to containerize services with Docker and deploy on Kubernetes to improve CI/CD efficiency.