Hi, I'm Sakhawat Hossain. Backend Software Engineer specializing in PHP 8+, Laravel 10/11/12, AWS Cloud, and modular service-based architectures. Experienced in engineering international production web applications, real-time WebSocket pipelines, and query-optimized database engines.
Tools and technologies I use to build secure, fault-tolerant, and performant digital products.
Clean, Modular & Maintainable Code
Scalable & Resilient Deployment
High-Throughput Concurrency
Relational & Query Tuning
Transactional Integrity
Full-Stack & Store Publishing
Direct senior technical leadership and execution for high-growth startups, scale-ups, and agencies.
Domain-driven modular monoliths, multi-tenant databases, and resilient RESTful/Webhook APIs designed to scale without spaghetti code.
EC2, Aurora RDS, ALB load balancers, S3 storage, and secretless zero-downtime deployments via GitHub Actions & AWS OIDC.
Slashing p95 latency to <35ms with composite indexing, EXPLAIN ANALYZE profiling, N+1 query elimination, and Redis caching.
Real-world applications engineered for international clients and high user throughput.
Architected an enterprise multi-tenant booking ecosystem operating across 3 dedicated portals on AWS EC2 & ALB with Amazon Aurora RDS cluster. Features pessimistic row locking eliminating double-booking race conditions, direct-to-S3 presigned uploads, and passwordless GitHub Actions SSM OIDC deployments.
Engineered an enterprise Modular Monolith backend on Laravel 12 & PHP 8.4 utilizing Domain-Driven Design (DDD). Features atomic checkout with row-level pessimistic locking (lockForUpdate()), Cartesian product variant generator, payment strategy pattern, real-time Reverb WebSockets, and Scribe OpenAPI 3.0 documentation.
Architected the automated multi-source scraping engine and GraphQL backend aggregating thousands of real estate and land auction deals across the US. Features error-isolated DomCrawler queue pipelines, Lighthouse GraphQL search, Stripe Cashier subscriptions, and weekly investor digests.
Engineered the enterprise backend APIs, administration dashboard, and real-time community engine for an Australian automotive enthusiast mobile app (in private client staging). Features vehicle compatibility matching algorithms (connecting specific car models with compatible aftermarket parts) and real-time live socket chat.
Engineered the complete scalable Laravel backend for a live US local city listings & events hub. Built with GraphQL APIs (Lighthouse), real-time WebSockets (Laravel Reverb), automated Stripe payments, Twilio SMS verification, and Firebase Cloud Messaging (FCM).
Architected the complete high-throughput RESTful API backend and Super Admin CMS powering the official OscarU mobile application on Google Play Store. Features merchant analytics portals, event ticket bookings, personalized user discovery feeds, and Firebase push notifications.
Engineered the complete scalable Laravel 11 RESTful API backend and Super Admin dashboard for Fest-Quest on the Apple App Store. Features festival performance rating engines, media vaults, real-time socket chat, Apple Sign-in with JWT auth, and Firebase FCM push notifications.
Engineered the complete headless Laravel 11 RESTful API backend and integrated Next.js e-commerce storefront. Features dynamic nested product variants, seasonal drops, multi-location courier & tax calculation engine, and Stripe Checkout sessions.
Developed a high-converting recurring subscription e-commerce portal with Next.js & Laravel. Implemented automated recurring billing cycles, subscriber customer self-service portals, and robust Stripe subscription webhook listeners with automated retries.
Full-stack software agency hub and client tracking workspace. Engineered with Next.js (App Router, Server Components & ISR), React, TypeScript, and Tailwind CSS, connected to a high-speed headless Laravel microservice backend with Laravel Reverb WebSockets for instant notification toasts, dynamic 5-palette theme switching, and interactive quote estimation.
Softvence IT Ltd | Mohakhali, Dhaka, BD
Edison Industries Ltd | Savar, Dhaka, BD
Kodeeo Ltd | Uttara, Dhaka, BD
Battle-tested notes on database tuning, zero-secret AWS deployments, and high-concurrency patterns.
Profiling slow nested queries using EXPLAIN ANALYZE, building composite indexes with the leftmost prefix rule, and layering Redis cache tags.
Eliminating static IAM access keys in GitHub Secrets. Assuming short-lived STS credentials via cryptographic tokens for zero-downtime EC2 deployments.
Whether you need robust Laravel API architecture, AWS cloud deployment, database performance tuning, or real-time WebSocket pipelines, I'm ready to bring immediate value to your team.