Wahab Ejaz
Software Engineer
/in/abdul-wahab-299554266
Summary
Dedicated Software Engineer with expertise in Ruby on Rails development, API design, and scalable architectures. Skilled in building high-performance e-commerce platforms, integrating third-party services, and implementing complex business logic for large-scale applications. Strong knowledge of database optimization, caching, microservices, and background processing, with proven success in improving system efficiency and reliability.
Overview
2
2
years of professional experience
Work History
Software Engineer
Elgrocer by Smiles (Etisalat Group)
08.2023 - Current
- API Development & Architecture: Designed and maintained RESTful APIs handling 50K+ daily requests across multiple versions (v1–v5) using Grape, token-based authentication, and RBAC.
- Payments & Promotions: Integrated the Tabby installment gateway, built a wallet transaction engine with credit/debit flows, and developed a promo system with complex discount rules, usage limits, and B2B-specific campaigns.
- Order Management & Delivery Intelligence: Implemented multi-shipment order architecture, integrated Locus API for real-time ETAs, and developed AI-driven vehicle assignment for optimal delivery efficiency.
- Performance Optimization: Reduced database load by 60% using Redis caching, N+1 query optimization, and Sidekiq background jobs for notifications, analytics imports, and order feedback.
- Security & Compliance: Implemented IP-based rate limiting, OTP-based bilingual (EN/AR) email verification, and configurable throttling with cooldown protection.
- B2B Workflow Automation: Streamlined B2B onboarding by integrating third-party CRM synchronization, enabling real-time rewards accrual and tiered benefit allocation for corporate partners.
Education
Bachelor of Computer Science - Computer Science
FAST(National University of Computer And Emerging Sciences)
Islamabad, Pakistan 04.2001 -
Skills
Ruby on Rails
Timeline
Software Engineer
Elgrocer by Smiles (Etisalat Group)
08.2023 - Current
Bachelor of Computer Science - Computer Science
FAST(National University of Computer And Emerging Sciences)
04.2001 -