10+ Years Experience in Backend Architecture & High-Performance Web Applications
Senior Backend Engineer with 10+ years building enterprise PHP applications, scalable e-commerce platforms, and high-performance WordPress solutions. Proven expertise in reducing page load times by 71%, increasing conversion rates by 35%, and managing systems serving 150,000+ monthly users with 99.9% uptime. Specialized in database optimization, REST API development, and delivering measurable ROI through technical excellence. Successfully reduced operational costs, automated business processes, and generated $2.4M+ in additional revenue through performance improvements. Ready to bring immediate value to challenging roles in Kolkata or remote teams worldwide.
Comprehensive technical skills in backend development and e-commerce systems
Proven track record of delivering high-impact technical solutions
Led complete infrastructure redesign for high-traffic WordPress e-commerce platform, solving critical performance and scalability issues.
📈 Impact: 71% faster page loads (6.2s → 1.8s) | 35% conversion increase | 45% less cart abandonment | Scaled to 150K+ monthly users | $2.4M additional annual revenue
Led development team delivering custom WordPress and Shopify solutions for enterprise clients in retail, healthcare, and finance.
📈 Impact: 60+ projects, 98% satisfaction | 20% under budget | 45% organic traffic boost | $850K revenue | Zero critical security issues
Built custom web applications and CRM systems for clients requiring tailored business solutions.
📈 Impact: 40% sales productivity boost | $120K annual cost savings | 97% faster data processing | 95% user adoption in 3 months
Selected portfolio demonstrating technical expertise and business impact
Problem
B2B client needed bulk order management, real-time inventory sync across warehouses, automated invoice generation with custom tax rules, and ERP integration.
Solution
Developed comprehensive WordPress plugin with custom admin interface, REST API integration, background processing for bulk operations, and PDF invoice automation with customizable templates.
Tech Stack
Result: 85% reduction in processing time | 1,200+ monthly invoices automated | 99.8% order accuracy | 50,000+ active installations | 4.9/5 rating
Problem
International fashion brand's Shopify store had 6+ second loads, 45% cart abandonment, poor mobile performance (PageSpeed 28), and revenue loss during promotions.
Solution
Complete performance overhaul: database optimization, Liquid template refactoring, lazy loading, image compression, CDN integration, and JavaScript optimization replacing heavy apps.
Tech Stack
Result: 75% faster loads (6.3s → 1.6s) | Mobile PageSpeed 28 → 94 | 42% conversion increase | Handled Black Friday 15x traffic with zero downtime
Problem
Healthcare client needed real-time data sync between WordPress appointments, CRM, email marketing, payment gateway, and SMS service with zero data loss.
Solution
Built middleware API with webhook handlers, OAuth 2.0, retry logic with exponential backoff, error logging, real-time dashboard, and queue system for rate limits.
Tech Stack
Result: 100% data accuracy | 18 hours weekly manual work eliminated | 52% fewer support tickets | 2M+ monthly API calls | 99.95% success rate
Problem
Corporate site with 150K+ monthly visitors had slow backend (12s admin), security vulnerabilities, poor Core Web Vitals, and frequent downtime during spikes.
Solution
Infrastructure overhaul: database cleanup (2.5M orphaned records removed), Redis caching, security hardening (2FA, firewall), code refactoring, optimized hosting with auto-scaling.
Tech Stack
Result: PageSpeed 42 → 96 | Admin 12s → 1.2s | 68% faster TTFB | Zero critical vulnerabilities | 48% organic traffic increase | 99.98% uptime
Expert solutions for businesses seeking senior-level technical talent
Experienced Senior PHP Developer in Kolkata with 10+ years building enterprise applications. Specialized in custom MVC architecture, RESTful APIs, and scalable backend systems handling high traffic. Proven track record with Kolkata IT companies and international clients delivering solutions that reduce costs and improve performance. Available for onsite roles in Salt Lake Sector V, Rajarhat, Park Street, and surrounding areas. Strong experience in technical leadership, team collaboration, and delivering secure, maintainable code. Immediate joining available with flexible notice period.
Senior WordPress developer in Kolkata offering comprehensive engineering services beyond standard themes and plugins. Expertise includes custom theme development, advanced plugin architecture, WooCommerce customization, multisite implementations, and performance optimization. Successfully delivered WordPress projects for Kolkata businesses across e-commerce, healthcare, education, and corporate sectors. Ideal for companies seeking WordPress experts for onsite collaboration, team integration, and solutions driving measurable results. Proficient in Bengali and English for seamless communication.
Senior-level backend engineer available for remote PHP development with companies across India and internationally. Extensive experience collaborating with North American, European, and Asia-Pacific clients. Skilled in Core PHP, Laravel, CodeIgniter, MySQL optimization, REST APIs, and DevOps (Git, Docker, CI/CD). Professional home office with reliable internet and flexibility across time zones (EST, PST, European hours). Available for full-time, contract, or project-based remote roles with enterprise-quality deliverables and regular communication.
Expert Shopify development combining technical skills with e-commerce best practices. Specialized in Liquid customization, theme development, app integration, payment gateways, and conversion optimization. Focus on high-performing stores that drive sales through advanced filtering, custom checkout, page speed optimization, and mobile responsiveness. Experience with international brands, startups, and established businesses. Available globally for remote Shopify projects from quick fixes to comprehensive builds and ongoing support. Immediate availability for urgent needs.
Ready to contribute to your team immediately with proven technical expertise
Available for immediate joining - Let's discuss how I can contribute to your team's success
With 10+ years of proven backend expertise and a track record of delivering measurable results, I'm ready to contribute to your technical challenges from day one.