Hire the Best Groovy Developers & Programmers in Dhaka, BD

I am a passionate programmer. I'm an expert Java Full stack developer with 10+ years of professional experience and focused on OOP technologies. I have an extensive background in large-scale web based systems. Expertise in full Software Development Life Cycle (SDLC) including Software Architecture, Object Oriented programming, Data structure & Algorithm, Database Design, J2EE Security, Encryption, Javascript. Worked on various E-commerce sites, Banking domain. My Skill set: Backend: --JAVASE(JavaSwing,JavaFx) -- Java EE (JSP, JSF, Servlet, EJB, JMS, JDBC, JPA etc) -- Spring (MVC, IoC, security,Cloud, boot, data, and transaction) -- Hibernate -- Web services (REST/SOAP) Frontend: -- HTML5, Javascript, Jquery, DHTMLX -- ExtJs -- JQXGrid -- Angular 4 -- Angular 4 upper Databases: -- MySQL, DB2, SQL Server, Oracle -- MongoDB Build tools: -- Maven Version Controls: -- Git, SVN Reporting Tools: -- Itext, Apache POI,Swagger,Jasper Cloud: -- Amazon AWS (EC2, S3) Servers: -- Tomcat -- Wildfly Code Generator -- Jhipster Other Technologies -- Hazelcast -- Aerospike -- Solr -- Lucene -- Artemis(Active MQ) -- LDAP I have worked in team size from 10 to 20 developers so far. To establish further healthy relationship allow me to provide satisfying work with meeting your expectations successfully and has the potential to maintain a long term relationship. Clear code with suitable commenting. Good communication to fulfill your requirements.I am sure I can help you building effective solutions for your business and provide the best quality support of them.

OCJP Certified Java Architect | Spring Boot | Microservices | AWS | Kafka | Camunda | 13+ Years Experience With 13+ years of professional experience in designing, developing, and deploying enterprise-grade applications, I help businesses build scalable, secure, and high-performance cloud-native solutions. My expertise spans Java, Spring Boot, Microservices Architecture, AWS Cloud, Kafka, Redis, Docker, Kubernetes, CI/CD, OAuth2, Keycloak, JWT, and Camunda BPM. Key Highlights: ✔ OCJP Certified Java Professional ✔ 12+ Years of Software Development Experience ✔ Microservices & Cloud-Native Architecture Specialist ✔ Banking & FinTech Domain Expertise ✔ RESTful APIs, Event-Driven Systems, and Distributed Architecture ✔ AWS Cloud Deployment & DevOps Automation ✔ Security Implementation with OAuth2, JWT, Keycloak, LDAP, and Okta Recent Accomplishments: ✅ Designed and implemented cloud-native microservices using Java, Spring Boot, Spring Cloud, Docker, and Kubernetes. ✅ Built FinTech and Banking solutions integrating payment gateways and remittance platforms, including Stripe, RIA, and Instant Cash Exchange House APIs. ✅ Developed high-performance event-driven architectures using Kafka and Redis for real-time processing and scalability. ✅ Automated deployment pipelines using Jenkins, Docker, Kubernetes, SonarQube, and Git-based CI/CD workflows. ✅ Implemented workflow orchestration and business process automation using Camunda BPM. AI-Assisted Development: I effectively leverage AI tools such as ChatGPT and GitHub Copilot to accelerate development productivity by 60–80% through: • Business rule analysis and API design • Schema and ORM modeling • Rapid endpoint generation • Code completion and refactoring • Automated code reviews and quality improvements • Technical documentation generation Core Technologies: • Java, Spring Boot, Spring Framework, Spring Cloud, Hibernate, JPA, Camunda, GraphQL, WebSockets • Kafka, RabbitMQ, Redis, Docker, Kubernetes • MySQL, Oracle, PostgreSQL, MongoDB, Elasticsearch • AWS (EC2, ECS, RDS, S3, IAM, SQS) • OAuth2, JWT, Keycloak, LDAP, Okta, Spring Security • React, Angular, TypeScript, JavaScript • Jenkins, Git, Maven, SonarQube, Jira I am passionate about building reliable, scalable, and secure enterprise solutions that deliver measurable business value. Let's discuss how I can help your team accelerate development, modernize architecture, and successfully deliver high-quality software solutions.

I help businesses stabilize, scale, and extend existing applications without costly rewrites. With 15+ years of experience, I specialize in Java (Spring Boot) and Laravel-based systems, focusing on bug fixing, performance optimization, API development, and long-term maintenance for SaaS and enterprise applications. If your application is slow, unstable, hard to maintain, or needs new features added safely — I can help. What Can I Help You With - Fixing critical bugs and production issues - Improving performance and database efficiency - REST API development and third-party integrations - Refactoring legacy Java / PHP applications - Secure authentication and role-based access - Ongoing maintenance and technical support Why Clients Trust Me - 15+ years building and maintaining real-world systems - $70K+ earned and 5,000+ hours on Upwork - Long-term contracts (1,000+ hours) with US & UK clients - Strong focus on clean, maintainable, and scalable code Technical Stack - Backend: Java, Spring Boot, Spring Security, Hibernate, JPA, PHP, Laravel - Frontend: Angular, React - Databases: MySQL, SQL Server - Tools: REST APIs, JUnit, Mockito, Git

Hi! I’m Md. Saddam Hossen, a results-oriented Full Stack Developer with 5+ years of experience building scalable, secure, and high-performance web applications. I specialize in Java Spring Boot, React, Angular, and cloud deployment using AWS and Docker. I’ve developed and deployed multiple full-stack systems and enterprise applications, optimized for performance, reliability, and maintainability. My work consistently reduces latency, improves database efficiency, enhances UX using modern UI frameworks, and ensures quality with thorough QA and testing practices. 🚀 What I Offer: ✅ Full Stack Web App Development (React/Angular + Spring Boot) ✅ Backend Microservices with REST APIs (Java, Spring Boot, Kafka, Redis, RabbitMQ) ✅ Frontend SPAs with React, Angular, Bootstrap, Tailwind CSS ✅ Cloud Deployment on AWS EC2, Digital Ocean using Docker & Kubernetes ✅ CI/CD Pipelines with Jenkins & GitLab CI/CD ✅ Secure Auth with JWT & Role-Based Access Control ✅ PostgreSQL, MongoDB, MySQL – Design, Optimization, Query Tuning ✅ QA & Testing – JUnit, Postman, Manual Testing, Debugging 🏗️ Projects I've Built: ✅ Device Management System – Inventory, Warranty & Service Tracking ✅ Attendance Tracker – Role-based dashboard with JWT-secured REST APIs ✅ Training Platform – Admin/Student Modules, Feedback System 🔗 Live apps & source code in portfolio below. 🛠️ Tech Stack: Java, Spring Boot, React.js, Angular, MongoDB, MySQL, PostgreSQL, Docker, AWS, Jenkins, Kafka, RabbitMQ, Redis, GitLab CI/CD, WebSockets, Thymeleaf, Tailwind CSS, JUnit, Postman 🎓 Education & Certifications: ✅ BSc in Computer Science & Engineering, MBSTU (2023) ✅ AWS Cloud Practitioner (In Progress) ✅ Responsive Web Design – freeCodeCamp Let’s build something scalable and modern! I’m here to help you turn ideas into working products with clean code, secure architecture, and real business value. 📬 Message me today to get started!

More than 21 years of experience on Java/JEE, PHP, C, C++, Perl, Shell Script, JavaScript MySql and Oracle technologies. An experienced Software Engineer/Architect with having strong R&D[Research & Development] background. Enjoy working on research based development, creating API/SDK, application framework and performance engineering, testing, code profiling, code optimizing, query optimizing, team and project managing. Experienced in designing Cloud computing/service, Semantic web, Sensor network, Ontology, SSO/Identity management, Asynchronous architecture, Mobile based App[Android] Data collector[xForm], Asterisk[AMI/AGI] based interactive IVR application, mHealth, e-Education, disaster and early warning system, Courier & Freight Software, Warehouse & Retail Supply Chain Software, Corporate Mailroom Software, Travel Software, Billing software and Web Bot. Wide and deep knowledge in Java/JEE Technology & OOP Architecture, REST/RESTful architecture, design patterns. Experience in Business intelligence and Reporting Tool. Workflow and BPMS. RDBMS. Solid background in Object-Oriented analysis and design UML, Design Patterns, Architecture Patterns and Software development methodology (Agile/SCRUM/TDD). Technical experienced on Java/JEE, EJB3.0, Spring, Hibernate, JPA, JSF, RichFaces , PrimeFaces Wicket, Struts, DWR, GWT, AngularJS, PhantomJS, Android, HTML, CSS, JS, jQuery, JAX-WS, JAX-RS, SOAP, Maven, Gradle, Jenkins , CloudBees, Google App Engine, Amazon AWS, jBPM , ESB, Node.js ,MySQL, ORACLE, PostgreSQL, SQL Server, MongoDB etc My preference to work on long term project. It could be hourly or fixed price job but hourly job is my first preference. I would like to maintain trustworthily long term relationship through good work. If anyone is there on the same page and match my criteria please poke me for further... More details about technical skills --------------------------------------------------------------------- Programming Languages: J2EE/J2SE/J2ME, Scala, JRuby, C/C++, Assembly, HTML/HTML5 /DHTML/ XHTML, JavaScript, Ajax, XML/XSL, PHP, Android. Frameworks & Toolkits: Spring, EJB3.0, JPA, Hibernate, S2Dao, S2Hibernate, Seasar, JSF, RichFaces, PrimeFaces, Wicket, Struts, DWR, SWT, GWT, Facelets, MIDP 2.0, JavaRosa, Smarty, ADODB, Yii, CodeIgniter, Laravel, Node.js, Dojo, jQuery, AngularJS, PhantomJS. GUI's: SWT, Eclipse RCP & RAP, JFace, Swing/JFC, AWT, JavaDesktop, Java2D, JGoodies. Databases: Oracle, MYSQL, PostgreSQL, MongoDB, SQL Server, JavaDB, FireBird, HSQL Template Languages: Apache Velocity, Handlebars, Nunjucks Build and Logging Tools : Apache Ant, Maven, Gradle , Jenkins , Log4j, gulp, Liquibase Application Servers: Glassfish, Tomcat, WildFly, WebLogic, Jetty Testing Tools: Selenium, JUnit, EasyMock, Mockito, Mercury LoadRunner, JMeter, BlazeMeter. XML's: XML (Dom, Xerces), XPath, Schema, XSD, RDF, Xform (openrosa & javarosa). Workflow (BPMS) & ETL: jBPM, Kettle, Talend. Business Intelligence & Reporting Tool: Eclipse BIRT, Pentaho, JasperRepors. IDE's: Eclipse, NetBeans, IntelliJ, MyEclipse Project Management Tools: SFEE (Source Forge Enterprise Edition), Subversion, Mylyn, Version One, Target process, JIRA, WorkFront, Asana, Redmine, CVS, SVN, GIT, Marcural Methodologies: RUP, Agile, XP, Scrum Operating Systems: Sun-Solaris-x86(10), Linux Family (Redhat/obuntu/Suse), Windows Family (NT/XP/98/2000/2003, vista).

Experienced in Spring Boot, Core Java, thymeleaf Engineer with devops task offered having 8+ years of experience. I have previously launched many sized Spring Projects that push innovation forward, helping people and businesses growth. I do also work on Back-End, Front-End and readiness of whole Database system. Java, Spring Boot, AWS Cloud, Spring Data, Hibernate, JPA, Spring Security, Spring MVC, Microservice, Java Server Page, iReport, JasperStudio, JasperReports, Apache POI, Log4js, Thymeleaf, Maven, REST API, Lambda AWS - Manage EC2, Amazon RDS, AWS Lambda, AWS Deployment Platform - Windows (8,10,11), Ubuntu, Mac OS Database - MySQL, PostgreSQL, Oracle Server - Nginx, Tomcat, Serverless Lambda Other - Git, Maven, JavaScript, jQuery, BootStrap, Jira, BitBucket Why choose me: • Affordable price • 100% client's satisfaction • The highest quality of work • Best communication with clients • Flexible time for client I will ensure my enthusiasm for your project to make it a great success and deliver work within deadline providing extra effort.