Specializing in Java, Spring Boot, scalable backend systems, ERP & business-critical applications

📍 Dhaka, Bangladesh   •   🌍 Open to Remote Opportunities   •   📧 [contact@zubayerahamed.com](mailto:contact@zubayerahamed.com)

Portfolio • LinkedIn • Stack Overflow • Twitter / X

I'm a Senior Software Engineer with 9+ years of professional experience designing, developing, and maintaining production-grade software systems.

My core strength is backend and enterprise application engineering, particularly with Java and the Spring ecosystem. I also work across modern frontend, mobile, database, reporting, and integration technologies to deliver complete business solutions.

Over the years, I have worked on systems including ERP platforms, restaurant and food-court POS systems, inventory and accounting solutions, reporting platforms, e-commerce applications, and other enterprise business software.

I care about more than making software work. I focus on:

• Clean and maintainable architecture
• Performance and scalability
• Reliable data modeling
• Secure API design
• Long-term maintainability
• Real-world business requirements

I don't just write code — I design systems that solve business problems and remain maintainable as they grow.

• Java
• Spring Boot, Spring MVC & Spring Cloud
• Laravel / PHP
• RESTful API Design & Development
• Microservices Architecture
• JWT Authentication & Role-Based Authorization
• Multithreading & Concurrent Processing
• Performance Optimization
• Enterprise Application Architecture

• PostgreSQL
• Microsoft SQL Server
• MySQL
• Oracle Database
• MongoDB
• Database Modeling & Schema Design
• Query Optimization & Indexing
• Transaction Management
• Data Synchronization
• Hibernate / JPA
• MyBatis
• Laravel Eloquent

• Angular
• Ionic
• TypeScript
• JavaScript
• Bootstrap
• HTML / CSS
• jQuery
• Progressive Web Applications

• REST APIs
• SOAP Web Services
• Third-Party API Integration
• Payment Gateway Integration
• Authentication & Authorization
• Enterprise System Integration

• Git
• GitHub
• Bitbucket
• Jenkins
• CI/CD Pipelines
• Maven
• Jira
• Agile / Scrum
• Docker

• JasperReports
• Crystal Reports
• Apache FOP
• BIRT

My experience is centered around real-world, transaction-heavy business applications.

Designed and developed POS solutions involving:

• Offline-first operation
• Multi-terminal environments
• Multi-branch architecture
• Kitchen Order Tickets (KOT)
• Waiter & kitchen workflows
• Inventory integration
• ERP integration
• Accounting integration
• Data synchronization
• Enterprise reporting

Experience designing modules and workflows around:

• Sales
• Procurement
• Inventory
• Accounting
• Warehousing
• Manufacturing
• Customer management
• Reporting
• Multi-branch operations

Built business systems involving:

• Stock movement
• Purchasing
• Sales
• Costing
• Account balances
• Financial transactions
• Business reporting
• Data synchronization

Experience building reporting solutions involving:

• Large datasets
• Dynamic reports
• PDF generation
• JasperReports
• Crystal Reports
• Apache FOP
• BIRT
• Server-side report processing

Experience with:

• Product catalogs
• Inventory
• Orders
• Payments
• Customer management
• Multi-vendor architecture
• Business reporting
• Backend administration

When designing software, I prioritize:

Business Requirements
        ↓
Domain Modeling
        ↓
Clean Architecture
        ↓
Reliable APIs
        ↓
Efficient Data Layer
        ↓
Security & Observability
        ↓
Performance & Scalability
        ↓
Maintainable Production System

I prefer engineering decisions that optimize for long-term maintainability rather than short-term convenience.

I'm currently deepening my expertise in:

• Distributed Systems
• Microservices Architecture
• Advanced System Design
• Event-Driven Architecture
• Kafka & Messaging
• Redis & Distributed Caching
• Docker & Containerization
• Cloud Architecture
• AWS
• High-Performance Spring Boot Applications
• Scalable ERP Architecture
• Large-Scale Data Processing
• Offline-First & Data Synchronization Architecture

I'm particularly interested in opportunities involving:

• Senior Java / Spring Boot Engineering
• Backend Architecture
• Enterprise Software Development
• ERP & Accounting Platforms
• SaaS Architecture
• Distributed Systems
• High-Performance APIs
• Complex Database Systems
• Data-Intensive Reporting Platforms
• Technical Leadership

I'm open to remote opportunities and challenging engineering projects where architecture, scalability, reliability, and business understanding matter.

I'm always interested in discussing software architecture, Java, Spring Boot, ERP systems, scalable backend engineering, and challenging business problems.

If you're building a serious product and need an engineer who understands both technical architecture and business requirements, I'd be happy to connect.

🌐 Portfolio   •   LinkedIn   •   Stack Overflow

Building reliable software for real-world business problems.