Senior-Level Backend Software Engineer & Full-Stack Specialist focused on building robust, high-throughput systems with PHP (Laravel 11/12), Modern JavaScript/TypeScript, Real-Time WebSockets, and Cloud Infrastructure.
- πΌ Currently working as a Laravel / Backend Developer at Softvence Agency.
- βοΈ Core Focus: Enterprise Backend Architecture, Scalable RESTful APIs, and Asynchronous Microservices.
- β‘ Performance & Data: Database query profiling, multi-column indexing in MySQL/PostgreSQL, and Redis caching layers.
- π Real-Time Systems: WebSockets, bidirectional event streaming with Laravel Reverb & Echo, and queue workers.
- βοΈ DevOps & Cloud: Continuous deployment, Nginx reverse proxy tuning, and AWS cloud management (EC2, S3, RDS).
- π‘ Philosophy: Writing clean, testable, and self-documenting code adhering to SOLID principles and DRY/KISS standards.
[ Client Applications (Web / Mobile) ]
β (HTTPS / WSS)
βΌ
[ Nginx Reverse Proxy ]
β
[ Laravel 12 API Gateway ] ββββββ [ Redis Caching & Queues ]
β β
βββββββββββββ΄ββββββββββββ βΌ
βΌ βΌ [ Background Workers ]
[ Domain Microservices ] [ Reverb WebSockets ] β
β β βΌ
βΌ βΌ [ Third-Party APIs ]
[ Optimized MySQL DB ] [ Real-Time Clients ] (Stripe, Webhooks, FCM)
- Domain-Driven & Clean Design: Decoupled business logic using Services, Action classes, and Repositories for long-term maintainability.
- Database Performance First: Eliminating N+1 queries, optimizing relational schemas, and keeping API response times consistently under 80ms.
- Resilient Integrations: Idempotent payment processing pipelines (Stripe, SSLCommerz, bKash) and fault-tolerant webhook listeners with exponential retry backoff.
- Zero-Downtime Reliability: Managing database migrations safely, managing background queues, and implementing robust error logging.
| βοΈ Backend & Frameworks |
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| π» Frontend & UI |
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| β‘ Real-Time & Caching |
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| ποΈ Databases & Security |
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| βοΈ Cloud, DevOps & Mobile |
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I am open to discussing high-scale backend engineering opportunities, system architecture consulting, and tech discussions:
- π§ Email: sajuislam266@gmail.com
- π¬ WhatsApp Direct: +880 1580-349431
- πΌ LinkedIn Profile: linkedin.com/in/sajusun
- π GitHub: github.com/sajusun

