Hi, I'm Saad Ali Khan.
I build the backend your business depends on: secure APIs, payment flows and wallet systems that stay correct under load.
Laravel & PHP engineer with 3+ years shipping production systems. Don't take my word for it: my public repositories include a double-entry ledger API and a full e-commerce platform, with their tests and architecture docs open for you to read.
<?php
namespace Developer\Profile;
class SaadAliKhan
{
public string $name = "Saad Ali Khan";
public string $role = "Software Engineer";
public string $company = "Technyx, Karachi";
public array $primaryStack = [
"PHP", "Laravel", "MySQL",
"REST APIs", "JavaScript"
];
public function getMission(): string
{
return "Designing backend logic, protecting data integrity, and shipping production code.";
}
}
Backend-Focused Engineer with Practical Experience
Understanding business problems, designing backend logic, and delivering maintainable web applications.
I am a Software Engineer at Technyx in Karachi, specializing in PHP, Laravel, MySQL, and modern web application development. I enjoy building practical software that solves real business requirements rather than over-engineering simple problems.
Backend development is my core strength. I work extensively with PHP and the Laravel framework, modeling relational database schemas, engineering RESTful APIs, and implementing business logic for applications with complex user flows, subscription plans, wallets, and delivery operations.
In addition to custom web applications, I have hands-on experience maintaining enterprise WordPress installations (ACF, Elementor, Custom Post Types) and customizing Shopify e-commerce stores. I am comfortable navigating Linux server environments (Apache, Nginx, PHP-FPM, Caddy), managing deployment pipelines, and troubleshooting production bugs under pressure.
I view software development as a full lifecycle process: understanding the business requirement, planning database relationships, building clean backend and frontend code, validating data integrity, deploying securely, and debugging root causes.
Core Engineering Focus
Technologies & Tools
Categorized technologies used to build, deploy, and maintain software applications.
Backend & Database
Frontend Development
CMS & E-commerce
DevOps & Infrastructure
Professional Timeline
Hands-on software development experience building and maintaining production systems.
Software Engineer
- Developing and maintaining Laravel and custom PHP backend systems powering production web applications.
- Architecting relational MySQL databases, modeling complex data structures, user accounts, meal plans, and transactional ledgers.
- Engineering RESTful API endpoints for web frontends, mobile client applications, and external integrations.
- Implementing complex business logic rules, user authorization policies, and wallet balance operations.
- Integrating third-party payment gateways with secure API request signing, webhooks, and verification safeguards.
- Executing large-scale WordPress restructuring projects involving 800+ pages, custom post types, and ACF field setups.
- Customizing Shopify e-commerce themes with custom Liquid templates and JavaScript frontend components.
- Troubleshooting production server issues across Linux, Apache, Nginx, PHP-FPM, and cPanel environments.
- Utilizing Git-based workflows, feature branches, pull requests, and standard team development practices.
Featured Engineering Work
Two open-source builds you can read line by line, plus production work delivered at Technyx.
FinCore: Wallet & Double-Entry Ledger API
A financial backend where money can't go missing: immutable double-entry ledger, idempotent requests, deadlock-safe transfers, reversals and a reconciliation job. Backed by feature tests for each guarantee.
my-store: Production E-commerce Platform
Full storefront and admin: catalog, variants, inventory ledger, cart, transactional COD checkout, coupons, reviews, order lifecycle, SEO structured data, rate limiting and security headers.
PractiCal Backend Platform
A production backend platform involving user accounts, subscription plans, meal orders, wallets, payments, order histories, and complex business rules.
Enterprise WordPress Website Revamp
Large-scale WordPress website restructuring and modernization involving hundreds of pages, multilingual content, custom post types, and dynamic content.
Shopify E-commerce Customization
Customization and maintenance of a production Shopify e-commerce store, including theme-level development, custom Liquid templates, and frontend improvements.
Payment Gateway Integrations
Integration and troubleshooting of third-party payment systems using secure API-based payment flows, checksum validations, and webhook listeners.
What I Do
Core software engineering services and practical capabilities.
Backend Development
Laravel and PHP applications with clean business logic, structured service layers, authorization controls, and maintainable code architecture.
REST API Development
Designing and integrating RESTful APIs for web applications, mobile frontends, and external third-party service providers.
Database Engineering
MySQL schema design, indexing strategies, complex query writing, table relationships, data integrity protection, and troubleshooting.
WordPress Development
Custom themes, ACF Pro integrations, Custom Post Types, Elementor customization, performance optimization, and large website restructuring.
E-commerce Solutions
Shopify Liquid theme customization, WooCommerce store setups, custom product workflows, and cart API integrations.
Production Debugging
Investigating real-world application exceptions, database slow queries, server configuration issues, and deployment bottlenecks.
Development Approach
A systematic 5-step methodology for turning requirements into maintainable software.
Understand
Analyze business requirements, existing legacy systems, data flows, and constraints before writing code.
Design
Plan relational database schemas, API payload structures, model relationships, and system architecture.
Build
Implement clean, readable, and maintainable backend logic and responsive frontend components.
Test
Validate edge cases, database constraints, input data sanitization, and end-to-end user workflows.
Deploy & Maintain
Deploy to production environments, configure web servers, monitor logs, and debug root causes.
"Good software isn't just code that works. It's code that remains understandable, testable and maintainable when the requirements change."
Open Source & Code
Explore my code repositories, technical experiments, and continuous engineering journey on GitHub.
Have a Project in Mind?
I'm always interested in discussing software engineering challenges, backend architecture, and full stack web development.