Hire the best Core Java Developers in Bangladesh

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$10 hourly
Mahfuzur R.
- 5.0/5
- (6 jobs)
🏆 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: 𝗝𝗮𝘃𝗮, 𝗦𝗽𝗿𝗶𝗻𝗴 𝗕𝗼𝗼𝘁 - 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: 𝗔𝗻𝗴𝘂𝗹𝗮𝗿 🏆 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 🏆 𝟭𝟬𝟬% Job Success 🏆 All 𝗙𝗶𝘃𝗲 ⭐️ Review I’m a 𝗦𝗲𝗻𝗶𝗼𝗿 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 with over 5 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 building robust, enterprise-level applications. I have a proven track record in core banking, insurance, and national-level projects like SDPP. I’ve managed complex systems in hospital management, healthcare, RBAC, inventory, and billing domains. Skilled in delivering scalable solutions with a focus on performance, security, and maintainability. 📌 SKILLS 💡 Programming Language: Java, Typescript, JavaScript 💡 Frameworks: Spring Boot, Angular 💡 UI/UX: Material UI, Tailwind CSS, Bootstrap, Reactive Forms, Apex Charts, High Charts 💡 APIs & AuthN: RESTful, OAuth2, JWT 💡 Architecture: Microservice, Monolithic 💡 Deployment: Multi-tenant SaaS 💡 DB: PostgreSQL, Oracle, MySQL, MS SQL 💡 ORM: JPA, Hibernate 💡 VCS: Git, GitHub, GitLab 💡 Tools: Azure DevOps, ZOHO, Redmine 💡 Methodologies: Agile, Scrum 🔧 𝐖𝐇𝐀𝐓 𝐈’𝐕𝐄 𝐁𝐔𝐈𝐋𝐓 𝐓𝐇𝐀𝐓 𝐌𝐀𝐓𝐓𝐄𝐑𝐄𝐃 ✅ Created a developer-friendly folder structure and coding standard across teams, reduced onboarding time for new dev's by 50%. ✅ Refactored legacy monolithic app into microservices with clean separation, reducing deployment downtime and improving scalability. ✅ Backend: – Built reusable base controllers and service layers in Spring Boot to eliminate duplicate code across 50+ modules. – Implemented exception handling using Spring AOP for cleaner, traceable code. – Designed flexible multi-database configs using external property files, making it easier to manage environments without code change. ✅ Frontend: – Created generic Angular form and action components where a single input and actions can be reused in 10000+ or more places, all controlled via dynamic config. - Optimized load time by reducing redundant API calls and leveraging lazy-loaded modules in Angular, boosting performance on large-scale apps. – Developed shared base services for API calls, reducing boilerplate and improving maintainability. I'm open to full-time, long-term collaboration. feel free to reach out, always happy to connect and contribute.

Core Java
RxJS
Bootstrap
Tailwind CSS
OAuth
Spring Security
Spring Framework
Hibernate
Angular Material
Microservice
Angular
RESTful API
Spring Boot
Java
$40 hourly
Arif M.
- 5.0/5
- (27 jobs)
Currently I am working on Android projects and spring boot project. I have done web project with python django. I have some basic knowledge in hardware programming with arduino. I prefer java based work mostly. I also prefer optimization related work such as reduce space and time complexity of an application.

Core Java
API
Computer Science
Data Structures
Android
Network Security
Flutter
API Development
RESTful API
Spring Boot
Java
RESTful Architecture
SQL
Golang
$20 hourly
Mohammed Maruf I.
- 4.9/5
- (15 jobs)
Hi. I'm a Java as well as C & C++ developer who has more than 4 years of experience in programming. I am also a competitive programmer. I have deep knowledge in Java, JavaFX, Java Swing, C , C++ and Python. Currently I'm completing my degree in Software Engineering.

Core Java
HTML
App Development
Object-Oriented Design
Object-Oriented Programming
Java GUI
Data Structures
Algorithms
JavaFX
Python
C++
Java
C
Desktop Application
$15 hourly
Mission D.
- 5.0/5
- (11 jobs)
Greetings!!! Hi, I am a Professional software Engineer at PioneerHub IT Institute. I have completed my Bachelor's Degree in Computer Science and built myself as a software developer with 3+ years of experience. I have built so many desktop applications and websites with the help of core knowledge of object-oriented concepts and programming using C, C++, Python, Java, Flutter, API Integration.

Core Java
Algorithms
Data Structures
Dynamic Programming Language
UML Diagram
Database Design
Database Query
Database
Programming Bug Fix
Problem Solving
C
Python
C++
JavaScript
Java
$40 hourly
Jalilur R.
- 0.0/5
- (1 job)
I am a Full-stack Android and iOS developer with 5+ years of experience. I have maintained, developed and launched multiple projects from scratch. Worked on the following areas of Android, iOS, and VoIP app development: • Audio Call/Dialler/PTT(PJSIP/FreeSwtich/Asterisk) • Video Call using Kurento(OpenVidu)/WebRTC • VoIP - Asterisk/FreeSwitch installation and configuration • AI application using Dialogflow, Snips • Chatbot development using Dialogflow, Manychat • Instant Messaging(XMPP/Jabber) • Live Video Streaming using Live555/VLC • Live Audio Streaming/Online Radio using Icecast/Ices/EZStream • Map Integration(Google Map/Apple Map/OpenLayers Map/Leaflet) • Facebook/Twitter Integration • Web service integration(SOAP/RESTful) • Ad Implementation(iAd/Admob) • Local DB(SQLite, CoreData) • Flurry (App Analytics) • Web service development in PHP

Core Java
Google Cloud Platform
Video Stream
Web Service
Chatbot Development
Android App Development
iOS Development
Chat & Messaging Software
Flutter
$10 hourly
Shaikh Hafiz A.
- 2.3/5
- (12 jobs)
Have 7 years of experience in software development. Below are some of the tools and technologies I've worked with: 1. Javascript 2. Typescript 3. Java 4. Kotlin 5. Angular 6+ 6. Spring boot 2 & Spring boot 3 7. Spring Data JPA 8. PostgreSQL 9. Microsoft Azure 10. Keycloak 11. Spring Security

Core Java
Web Application Firewall
Microsoft Azure
DevOps
RESTful API
Angular
Docker
Spring Boot
TypeScript
Spring Framework
Java
JavaScript
Vue.js
React
$10 hourly
Ruhul A.
- 0.0/5
- (0 jobs)
To attain an alluring mode of creativity in the domain of knowledge, culture and technology by which I can make a bridge between theory and practice and be able to show my creativity and integrity, at the same time to fulfill my desire to work in a competitive environment and being a part of successful organization

Core Java
RESTful API
CSS
Microsoft Excel
SQL Programming
C
Content Writing
Logo Design
Joomla
HTML
Stored Procedure Development
Oracle APEX
JavaScript
WordPress
$5 hourly
Md. Abdus S.
- 5.0/5
- (1 job)
A highly resourceful, motivated & problem solver senior PHP developer with 5+ years of experience. Experienced in analysis, design, developing, and supporting web applications using PHP technologies, Framework(Laravel, CodeIgniter, VueJs, Vuetify, Inertia), Mysql, PostgreSQL & Linux environments. Strong background in core knowledge of algorithms, programming & writing complex SQL queries. Skilled in handling multiple tasks from bank-end coding tasks to front-end design. ᑭlease notє that why you should hire me-- 1. I am a true eхpert in my area. 2. I have great communication skills as I know English pretty well. 3. I am a fast worker and I always meet deadlines. 4. I will always be reasonable with my clients and very specific with the job. 5. You can always reach me via message here. 6. My work is 100% clean and accurate. And I really love my work. I like to get paid after completing a job. ᕼave a nice time-- Thanks

Core Java
Laravel
PHP
MySQL
CodeIgniter
MySQL Programming
PostgreSQL
Vuetify
Vue.js
$15 hourly
Md Shihab H.
- 0.0/5
- (0 jobs)
🌟 Top-Rated Android Developer | Kotlin • Java • Firebase • REST API • MVVM 🌟 Hi there! 👋 I'm a passionate Android App Developer with a strong command of modern technologies and a deep love for building powerful, user-friendly mobile applications. With hands-on experience in both Java and Kotlin, I specialize in developing sleek, high-performance apps that not only look great but work flawlessly. ✅ What I Bring to the Table: 🔹 Android Development (Java & Kotlin) Clean, efficient, and maintainable code using latest tools and best practices. 🔹 Modern Architecture (MVVM) Scalable and testable app structure to ensure long-term maintainability and smooth performance. 🔹 Firebase Suite Realtime Database, Firestore, Authentication, In-App Messaging, Cloud Messaging (Push Notification) – I’ve done it all! 🔹 RESTful APIs & Backend Integration Expert in working with Retrofit, Volley, JSON, and integrating third-party and custom APIs for dynamic functionality. 🔹 Database Mastery SQLite, RoomDB, MySQL – Local or cloud-based, your data is safe and efficient with me. 🔹 UI/UX with Material Design Attractive, user-friendly interfaces that enhance engagement and usability. 🔹 Third-Party Libraries Glide, Picasso, Lottie, and many more – I integrate the best tools to enhance app capabilities. 🔹 Git & GitHub Seamless version control for collaborative and smooth project development. 🔹 Machine Learning Integration (ML Kit) Adding smart features to your app using on-device ML capabilities. 🔹 PHP & API Development From building custom APIs to integrating existing ones — I ensure seamless server-side communication. 🚀 Why Choose Me? ✅ Client-Focused Approach – Your satisfaction is my top priority. I listen, understand, and deliver exactly what you envision. ✅ Fast & Reliable – I take deadlines seriously and never compromise on quality. ✅ Clear Communication – Regular updates and responsiveness throughout the project. ✅ Post-Delivery Support – I don’t disappear after delivery. I provide ongoing support and improvements. ✅ Up-to-Date Knowledge – Constantly learning and applying the latest technologies in mobile development. 💼 Let’s Build Your Next Great App Whether you need a full-featured app from scratch, a bug fix, or just a performance improvement — I’m here to help. Let's collaborate to bring your ideas to life with clean code, modern design, and user-first thinking. 📩 Message me today and let’s start building something amazing together!

Core Java
Material Design
API Development
API
Firebase Realtime Database
User Authentication
Firebase
JSON
Gradle
PHP
MySQL
App Development
Mobile App
Java
Android
$25 hourly
Md Abdullah Al A.
- 4.4/5
- (37 jobs)
I am Abdullah, a software developer with a passion for creating innovative solutions that meet the needs of my clients. With a Master's degree in Information Systems and a Bachelor's degree in Computer Science and Engineering, I have over thirteen years of experience developing systems for mobile devices using Java and Dart. I am skilled in using Android, iOS, Flutter, React native, Libgdx, Spring, Unity3D, and Firebase, and actively use Java, Dart, JS, and Swift. During my time at Samsung R&D Institute, I worked on Android OS ROM customization and kernel builds for various Samsung devices. In addition, I have experience in backend server development, such as developing an application server using the Spring framework and Golang. I also have hands-on experience with cloud servers like Firebase and PaaS like Google Compute Engine, AWS, and Heroku. I am skilled in UI/UX design implementation and can provide decent and straightforward UI and UX when asked to design myself. I am also good at business logic implementation, participating in system architecture design and database design. I am proud to have worked on several successful projects, including leading a team of ten members to build a mobile client e-wallet system for the largest state-owned bank in my country. We used Java for Android and Swift for iOS and focused on security while ensuring that the application was user-friendly. Another project I worked on is a smart home management system located on the Sea, which monitors and controls various IoT devices on the Sea Pod. I am committed to meeting challenges head-on, such as ensuring encryption of the payload when communicating with the application server on the e-wallet system project. Additionally, I handle private key storage challenges intelligently, customizing existing algorithms and methodology while introducing new logic. I have worked with different personalities in multicultural environments, and I understand the importance of teamwork and cooperation. I am confident that I can be a valuable asset to your team and contribute to your success. Thank you for considering my application, and I look forward to working with you.

Core Java
RESTful API
GPT-3
AOSP
AWS Lambda
Flutter Stack
Android
Python
Android App Development
Firebase
Mobile App Development
Swift
Kotlin
Dart
Hybrid App Development
$10 hourly
Abu U.
- 0.0/5
- (1 job)
Hi! I am an experienced iOS and Android mobile app developer with a passion for creating innovative, high-quality applications. Over five years, I have worked on so many projects, both as a solo developer and as part of large teams. 🔥 Client satisfaction is my priority 🔥 As a mobile app developer, my proactive and conversational style is one of my greatest assets. I place a high value on open communication, both when it comes to offering suggestions to enhance the functionality and appearance of apps and when it comes to promptly and efficiently handling client feedback. My ability to continuously deliver results that go above and beyond expectations is attributed to my close contact with both clients and team members. A variety of strong and well-liked tools, including Java, Kotlin, Flutter, Retrofit, Volley, Room, and LiveData, are part of my typical stack. My ability to work with these tools well allows me to design user-friendly and effective mobile applications that prioritise dependability and responsiveness. My aim in all my work is to make applications that satisfy the needs of my clients and end users while also being aesthetically pleasing. With my background, technological know-how, and effective interpersonal skills, I am sure I can take on any Android app development project and produce top-notch outcomes. 🌟 Why should you choose me? 🌟 👉 Vast expertise developing Flutter and Java apps. 👉 Have a track record of excellence in delivering apps. 👉 Strong Firebase integration experience for synchronizing data in real time. ✨ Here is my expertise which includes ✨ ✅ Java App Development ✅ Flutter App Development ✅ State Management (e.g., Provider, Bloc, GetX) ✅ Firebase Integration ✅ Firestore Integration ✅ Firebase Realtime Database Integration ✅ Firebase Authentication ✅ Push Notifications ✅ REST APIs ✅ RESTful APIs ✅ Responsive Design and Layouts ✅ In-App Purchases and Payment Integration ✅ Background Tasks and Services ✅ GraphQL Integration ✅ Performance Optimization ✅ Database Management 🤝 Services I Can Provide for you 🤝 • Used MVVM design pattern for Android and iOS mobile app development • Complete Development of the iPhone and android mobile app • Riskining of App • Fixeing of Bugss • Android API Support • Google maps integration • Firebase complete project setup • Firebase, SQLite Database • REST API • Authentication using Gmail, Facebook, Phone, etc • Payment gateways Integration • Push Notification Setup • In-App Purchases • Monetization of your App using (Admob, AppLovin, Facebook, etc ads integration) 🦾 Development Process 🦾 • Collection & Analysis of Client Requirements • Discuss about Design • Icon Design & Development using Azaile Methodologies • QA Testing • Future Maintenance & Support So I profound believe in myself that I will be your best iso and android mobile app developer.

Core Java
Search Engine Optimization
WordPress
Flutter
Android App Development
$10 hourly
Al Hasan D.
- 0.0/5
- (0 jobs)
Spring Boot | Java Backend | REST APIs | MySQL | Thymeleaf | E-commerce Systems Hi! I’m a dedicated and detail-oriented Java Spring Boot developer from Bangladesh, with hands-on experience building secure, scalable, and production-ready backend systems. I specialize in: ✅ Building robust REST APIs with Spring Boot ✅ Designing and developing Admin Panels using Thymeleaf or REST + frontend ✅ Creating E-commerce platforms with inventory, cart, checkout, and payment features ✅ User Authentication & Authorization with Spring Security & JWT implementation ✅ MySQL/PostgreSQL integration with JPA/Hibernate ✅ Bug fixing, optimization, deployment support 🔧 Technologies That I Work With: Java | Spring Boot | Spring Security | Hibernate | JPA | MySQL | PostgreSQL | Thymeleaf | REST | Git | GitHub | JSON | HTML/CSS 🌍 I'm committed to: Writing clean, well-documented code Meeting deadlines Providing post-delivery support Communicating clearly and frequently Whether you need a complete backend system or just need help with fixing bugs or adding new features — I'm here to help. Let's build something great together!

Core Java
Spring MVC
User Authentication
Bootstrap
Spring Security
Thymeleaf
Servlet
Microservice
Software Architecture & Design
Software Development
RESTful API
SQL
Spring Boot
Spring Framework
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