Harpreet S.

I’m a Senior Full-Stack Developer with 9+ years of professional experience building, debugging, modernizing, and maintaining production web applications. I help businesses build new applications, improve existing systems, fix complex problems, integrate third-party services, and turn AI-assisted or legacy codebases into reliable production software. My core expertise includes PHP, Laravel, Vue.js, Next.js, JavaScript, MySQL, REST APIs, GraphQL, CS-Cart, and Moodle. What I can help you with * Laravel & PHP development — new applications, features, APIs, maintenance * Full-stack development — Laravel + Vue.js / Next.js * REST & GraphQL APIs — development, integration, optimization * Third-party integrations — payment gateways, shipping, authentication, external APIs * SaaS & custom business applications * E-commerce & marketplace development * Legacy PHP modernization — refactoring, upgrades, architecture improvements * AI-assisted application development — completing, reviewing, debugging, and productionizing AI-generated code * Performance optimization — slow APIs, database queries, application bottlenecks * Production troubleshooting & bug fixing * Database design, optimization & migration * Moodle development, customization & migrations * CS-Cart customization & e-commerce development * Code reviews and technical improvements Working with AI-built applications Many businesses are now using tools such as Claude Code, Cursor, GitHub Copilot, and other AI coding tools to build applications faster. If you already have an application partially or largely built with AI, I can help you: * Review the generated code and architecture * Fix bugs and incomplete functionality * Refactor unreliable or duplicated code * Improve security and performance * Connect APIs, databases, and third-party services * Add missing business logic * Test and stabilize the application * Deploy and prepare it for production * Continue development as your technical partner I use AI-assisted development tools such as Claude Code myself to accelerate research, implementation, debugging, refactoring, documentation, and repetitive engineering work. However, architecture, code review, testing, security, and final technical decisions remain engineering-driven. How I work I don’t just start changing code. For an existing application, I first understand the business requirement, current architecture, database, integrations, and existing code. I then identify the root cause or best implementation approach before making changes. My goal is to deliver code that is maintainable, secure, scalable, and suitable for production rather than simply making something work temporarily. Why work with me? * 9+ years of professional web development experience * Strong Laravel/PHP backend expertise * Full-stack experience with Vue.js and Next.js * Extensive experience working with existing and legacy codebases * Strong API and third-party integration experience * Experience with e-commerce, marketplaces, Moodle, SaaS, and custom business applications * Comfortable debugging difficult production issues * AI-assisted development experience with Claude Code * Practical, business-focused problem solving * Clear communication and long-term development support Whether you need to build a Laravel application, finish an AI-generated project, modernize a legacy PHP system, integrate a complex API, fix a production issue, or have an experienced developer maintain your application, I can help. Available for long-term projects, contract work, ongoing development, and production support.