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Software Engineer · Full Stack

Hi, I'm Saiyed Hosne Mobarak Adnan.

Building backend systems and mobile apps that scale with the products they power.

I design and engineer full-stack software — from Spring Boot APIs to Flutter mobile experiences and Angular dashboards. Currently focused on Next.js, system design, and cloud architecture.

Software Engineer

01Selected Work

Projects I've shipped

Backend
2025Backend

E-Prescription & Medical Store Management System

Healthcare platform for digital prescriptions, pharmacy operations, and medical inventory management.

Role — Backend development — REST APIs, database design (MS SQL + JPA), API testing

Spring BootReactMS SQL ServerJPAGitGitHubPostman
Enterprise
Full Stack
2025Full Stack

ERP Supply Chain Management System

Enterprise resource planning solution focused on supply chain and business process management.

Java ServletJavaScriptMS SQL ServerCrystal Reports
Enterprise
Full Stack
2024Full Stack

Rent A Car Automation — Web Application

A modern car rental management web application built with Angular and Spring Boot, featuring a responsive admin experience and real-time data management.

AngularSpring BootMySQLPrimeNGTailwind CSSFlowbiteTypeScript
Production
Mobile
2025Mobile

Rent A Car Automation — Mobile Application

Cross-platform mobile car rental app built with Flutter, sharing the same Spring Boot backend as the web platform.

FlutterDartSpring BootMySQLREST API
Production
Desktop Application
2024Desktop Application

ATM Management System

Java Swing-based ATM simulation with secure transaction and account management.

JavaJava SwingMySQLJDBC
Academic
Full Stack
2025Full Stack

Management Business Dashboard

Business intelligence dashboard for monitoring KPIs, operational metrics, and management reports.

Java ServletHTMLCSSJavaScriptChart.js
Enterprise
Full Stack
2025Full Stack

Multi-Level Approval Workflow System

Enterprise workflow system supporting multi-stage approval processes and automated decision routing.

Java ServletJavaScriptHTMLCSSMS SQL ServerStored Procedures
Enterprise
02About

I build reliable software across the full stack.

Software engineer with 1.5+ years of experience building real-world, production-grade applications across web, mobile, and enterprise systems. I specialize in the JVM ecosystem — Java and Spring Boot — paired with modern frontends in Angular and Flutter. My work has shipped to enterprise production environments where reliability and maintainability matter.

I care deeply about writing code that is readable, maintainable, and — above all — dependable in production. My engineering philosophy is simple: solve real problems with the right amount of complexity, no more, no less.

Based in Bangshal, Dhaka, Bangladesh

Backend Systems

RESTful APIs, data modeling, and enterprise workflows with Spring Boot and Java.

Java · Spring Boot · SQL

Cross-Platform Mobile

Native-quality Flutter apps that share a single backend with their web counterparts.

Flutter · Dart

Interface Engineering

Responsive, accessible interfaces from Angular dashboards to modern React and Next.js.

Angular · React · Next.js

03Journey

Where I've made an impact

Backend Developer

Backend · Official

E-Prescription & Medical Store Management System · 2025

Designed and implemented the backend for a professional healthcare solution — RESTful APIs with Spring Boot, database operations with MS SQL and JPA, and close collaboration with React frontend developers.

  • Built REST API layer and JPA-backed data models
  • Implemented role-based access and medical store operations
  • Validated and debugged APIs with Postman
Spring BootReactMS SQL ServerJPAPostman

Software Engineer

Full Stack · Enterprise

Enterprise ERP — Supply Chain & Business Systems · 2025

Contributed to enterprise software spanning an ERP Supply Chain Management module, a management business dashboard, and a multi-level approval workflow system.

  • Built frontend and backend of an SCM (Supply Chain Management) ERP module
  • Developed a Java Servlet + Chart.js management dashboard for KPI monitoring
  • Designed multi-level approval workflow logic with MS SQL stored procedures
Java ServletJavaScriptMS SQL ServerChart.jsCrystal Reports

Full Stack Developer

Full Stack · Product

Rent A Car Automation · 2024 – 2025

Built a complete car rental product with a web platform (Angular + Spring Boot + MySQL) and a companion cross-platform mobile app in Flutter sharing the same backend.

  • Shipped an Angular + Spring Boot web application with an admin dashboard
  • Built a Flutter mobile app against the same Spring Boot API
  • Designed a responsive UI with PrimeNG, Tailwind, and Flowbite
AngularSpring BootFlutterMySQLREST API
04Capabilities

The technologies I work with

A snapshot of the stack I use to design, build, and ship full-stack applications — from web and mobile to databases and dev workflows.

Frontend

Responsive, accessible interfaces

4
  • AngularComponent-driven SPA architecture
  • ReactInteractive component UI
  • Next.jsFull-stack React apps
  • TypeScriptType-safe web frontends

Backend

APIs, services, and enterprise logic

3
  • Spring BootRESTful Java services
  • Node.jsServer-side JavaScript
  • .NETApplication and API logic

Languages

The languages I write every day

4
  • JavaEnterprise and backend systems
  • JavaScriptWeb and Node scripting
  • DartFlutter and app logic
  • C#Application and API logic

Mobile

Cross-platform applications

2
  • FlutterCross-platform UI toolkit
  • Android (Java)Native Android development

Databases

Designing and querying data

4
  • MS SQLRelational data
  • MySQLRelational data
  • OracleRelational data
  • PostgreSQLRelational data

Tools & Workflow

Delivery, version control, and collaboration

1
  • GitVersion control & review
05Growth

Always in the process of becoming

Engineering is a craft that rewards curiosity. I'm steadily deepening my skills in the areas that matter most for building large, dependable systems.

Currently learning

  • Next.js
  • System Design
  • .Net

Next on the horizon

  • Master React & Next.js
  • Build scalable apps
  • Contribute to OSS

Looking for

Full-stack developer role where I can grow and contribute

Work style: Remote / Hybrid / Onsite

Open to work & Learning
06Contact

Let's build something remarkable together.

Open to work & Learning. I'm happy to talk about full-stack opportunities, mobile development, or engineering challenges you're working through.

Bangshal, Dhaka, Bangladesh