Osama Shaikh

Results-driven Backend Developer with 6 years of experience building scalable web applications, RESTful APIs, and enterprise-level systems using PHP 8.x, Laravel, and CodeIgniter. Delivered 8+ production platforms across e-commerce, automotive, social networking, and logistics domains. Proven track record integrating complex third-party services including 6+ payment gateways, shipping carriers, and communication APIs.

Experienced with Docker containerization, Redis caching, Laravel Queue-based job processing, PHPUnit testing, AWS S3, and GitHub Actions CI/CD pipelines. Immediately available for full-time, remote, or hybrid opportunities.

Senior Software Engineer - Probyte Pvt Ltd - Karachi, Pakistan

(2021-09)

• Golden Group Portal (POS & Inventory System) — Designed and built a full inventory lifecycle portal with real-time stock tracking, dynamic cart and order management, smart pack-tracking engine, granular RBAC, Onfleet API delivery management, Stripe webhook integration, Redis caching on reporting endpoints, and Laravel Queues for async order notifications. Improved operational efficiency by 40%.
• Nail Ready (E-Commerce + CMS) — Architected a full-featured e-commerce backend with custom CMS, configurable product variants, multi-image gallery, Stripe / PayPal / Apple Pay with unified order management, Shippo live shipping rates, JWT-based API auth, PHPUnit feature test coverage, and Docker containerization for dev/staging parity. Boosted backend efficiency by 30% and security by 25%.
• NC Super Cars (Automotive Platform) — Built a premium vehicle listing platform with advanced multi-filter search, comprehensive admin panel, AWS S3 media storage, Stripe / PayPal payment integration, SEO-optimized URLs, and OpenAPI-documented endpoints for third-party integrations.
• Doulton Cars (doultoncars.co.uk) — UK car dealership portal with AJAX real-time vehicle filtering, CRM-style enquiry and test-drive management, and a finance calculator widget for visitor loan estimation.
• Real Connection (Social Networking) — Matchmaking platform with full profile management, connection/follow system, real-time messaging backend with read receipts, Redis Pub/Sub for notification delivery, and admin moderation panel.
• Legal2Gro (legal2gro.com) — Cannabis consultation booking platform with expert profile management, session scheduling, and AeroPay/AeroSync ACH integration for compliant, cashless transactions.
• 9JA Group (Corporate Portal) — Multi-section corporate portal with modular CMS, Twilio SMS lead notifications and Voice callback feature, and role-based admin workflow for department-level content management.
• Constantia Imports (B2B/B2C E-Commerce) — Full product catalog, inventory system, and order management platform for a UK flower distributor serving retail chains, florists, wholesalers, and corporate buyers.

Junior Web Application Engineer - Nauf Network - Karachi, Pakistan

(2021-03 - 2021-09)

• Developed and maintained multiple client web applications using Core PHP, CodeIgniter, and Laravel, consistently delivering projects on schedule.
• Optimized slow database queries through indexing and query restructuring, achieving measurable performance improvements across multiple codebases.
• Enforced security best practices including prepared statements, session management, and XSS/CSRF prevention.
• Managed database schema design, migrations, and server-side API integration with front-end components.

Backend Development Intern - Tafsol Technologies - Karachi, Pakistan

(2020-11 - 2021-03)

• Collaborated with senior backend developers to integrate server-side logic with front-end components, participated in code reviews, and assisted in debugging and performance optimization sessions.
• Gained hands-on experience with professional web development workflows, tools, and coding standards in a structured team environment.

Bachelor of Science - Software Engineering - Iqra University (2015 - 2019)