About
Backend Software Engineer with 2+ years of hands-on experience specialized in engineering distributed System Design, implementing structured Clean Code & Software Architecture, optimizing high-concurrency Database & API Performance, enforcing strict API Security, and setting up containerized DevOps & Scalability pipelines.
My experience covers orchestrating microservices architectures, decoupling system loads with event-driven RabbitMQ message brokers, building background queues with BullMQ, configuring active Redis-based cache locks, and tuning PostgreSQL indexing. All backend code adheres strictly to Clean Architecture and SOLID guidelines to assure enterprise-grade testability and scaling.
Experience
- →Engineered distributed System Design solutions, scaling 40+ NestJS REST endpoints to support 15,000+ daily active requests with 99.9% uptime.
- →Optimized PostgreSQL Database & API Performance through custom indexing, reducing database response latency by 35% under peak traffic.
- →Implemented clean Security controls, including secure Role-Based Access Control (RBAC), signed JWT access tokens, and request rate-limiting.
- →Designed event-driven asynchronous processing queues using Redis and BullMQ to handle email logs and decoupled core latency.
- →Maintained robust DevOps & Scalability workflows using Docker, containerizing multi-service components to reduce local dev setup times.
- →Practiced Test-Driven Development (TDD) using Jest, ensuring high coverage and clean, maintainable, production-ready releases.
- →Developed responsive full-stack SaaS features using React.js and NestJS, optimizing web performance and increasing user engagement by 20%.
- →Collaborated on database schema designs, standardizing query models to prevent race conditions during transaction updates.
- →Integrated secure payment gateways (SSLCommerz) and multi-provider OAuth authentication pipelines.
- →Enforced strict Clean Code principles and SOLID guidelines, leading structural code refactoring to improve testability and code readability.
Skills
>core technologies
>system design & integration
>clean code & architecture
>database & api performance
>security & access control
>devops & scalability
Projects
LMS Backend Platform
- →Designed a modular System Design architecture supporting scalable multi-role course enrollments.
- →Implemented clean database schemas in PostgreSQL with customized transaction indexing to optimize Database Performance.
- →Built a secure Security framework including custom JWT guards and Role-Based Access Control (RBAC) gates.
- →Configured asynchronous background queues in BullMQ for decoupled event-driven notification dispatching.
- →Managed DevOps workflows containerizing backend services using Docker for clean VPS deployments.
Vital Hands Healthcare Staffing Platform
- →Engineered a high-concurrency healthcare staffing backend supporting dynamic shift creation, role-based eligibility matching, and decimal pay calculations.
- →Implemented a secure authentication gateway featuring OTP logins, role-based access control (RBAC), and NMC PIN compliance verification.
- →Integrated BullMQ and Redis queues to handle async compliance document processing and bulk SMTP notification alerts.
- →Deployed and containerized services using Docker on Linux VPS with PM2 and Nginx reverse proxying, supporting App Store / Play Store Flutter clients.
Education
B.Sc. in Software Engineering
Completed a rigorous software engineering curriculum establishing core theoretical fundamentals in computation, architectural patterns, relational/non-relational database internals, and high-performance backend design.
Core Courses & Focus Areas
Contact
Submit the API playground client on the right to send me a direct message, or reach out via the traditional protocols on the left.