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I am a Java Web Developer, working as freelancer, mainly in Upwork. I am very passionate with Java and JVM technologies. My experience mostly in developing Software As A Service (SaaS) platform, business computing and information system area, using Bootstrap, Angular JS or JSF as UI Components or web framework, Spring Core, Spring MVC or JBoss Seam as Restful API endpoint and or Integration framework, and Hibernate as favorite Java Persistence API (JPA) implementation wrapped by Spring Data component. If my clients requires no casual application or web server, I like to use Spring Boot for simpler development and deployment of the application. I am also interested in database design and software design. I believe that great software not only mediocre work of typing, but also comes from thoughtful process. I believe in TDD, and also believe that tests code must be written, organized as good as the source code it self and is integral part of the source code. I am a quick learner, and In my spare-time, I am writing some personal open source project and small proof-of-concept about java-related stuff in my GitHub public repository. My primary machine is linux desktop with 1TB NVMe SSD and 64GB or RAM. I have macbook pro 15 for testing purpose and to allow me mobile occasionally, if needed. Communication is important in remote work, and for this purpose I have 2 link dedicated internet connections to my workspace. If you need my detailed skill abilities, below is what I have experienced in: - Software Design, Database Design, and microservices/Micro-services/micro services architecture. - JPA 1.0, JPA 2.0, with Hibernate. - Bean Validation Specification with Hibernate Validator. - Dependency Injection with Java DI (JSR-330), Java Context and Dependency Injection for Java EE Platform (JSR-299), and Spring Core as most popular (but non-standard) Java Dependency Injection Framework. - Java Web Framework with Spring MVC and JSP, or Java Server Faces (JSF) with Facelet and Primefaces. - Spring Boot, Spring Data stack. - Generated / scaffolding web application using JHipster. - Java Web / Application server with Tomcat, Wildfly, or Websphere AS. - Logging with SLF4J as a wrapper to Log4J or Logback. - JUnit or Test NG as testing framework. - Ant, Maven or Gradle as build and dependency management tool. - HTML 5, CSS 3, JavaScript, JQuery, Twitter Bootstrap, transparency.js, and angular / angular.js - Third Party API such as Xero API, Open ERP Java API, Braintree Payment API, Stripe Payment API, and Social APIs. - Linux, Mac or Windows. - MySQL, PostgreSQL, Oracle, or Microsoft SQL Server for RDBMS. - Couchbase or Mongo DB for No-SQL solution. - Elasticsearch (ELK) stack or pentaho for data integration, advanced search, reporting and data analysis solution. Thanks, Resa

Results-driven system developer with more than 10 years of development experience using java. Having a strong technical background who possesses self-discipline and the ability to work with the minimum of supervision. Able to play a key role throughout the software development / support life cycle of a project to ensure the quality solutions meet business objectives. Also highly accomplished with a verifiable track record in fields such as analysis and gathering, business process mapping and the development of interactive prototypes.

As a versatile and experienced software developer, I specialize in building robust, scalable, and efficient applications using a diverse range of technologies. With a solid background in Golang, Node.js, FreePascal, Delphi, Java, and Angular, I am equipped to handle projects across various domains, from backend development to full-stack solutions. Key Skills: ** Golang: Expertise in building high-performance, concurrent applications and microservices with Go. Proven track record in developing efficient server-side solutions. ** Node.js: Extensive experience in developing scalable, real-time web applications using Node.js. Proficient in leveraging Express.js and other frameworks to create seamless RESTful APIs. ** FreePascal & Delphi: Skilled in legacy system maintenance and modernization. Adept at developing cross-platform applications with a focus on performance and reliability. ** Java: Strong background in building enterprise-level applications using Java. Experienced with Spring Framework, Hibernate, and other Java-based technologies. ** Angular: Proficient in creating dynamic, responsive, and user-friendly front-end applications with Angular. Skilled in integrating with backend services to deliver full-stack solutions. ** Kubernetes: Proficient in container orchestration with Kubernetes, enabling scalable and resilient application deployments. ** AWS & GCP: Experienced in leveraging cloud platforms like AWS and GCP for deploying, managing, and scaling applications. Knowledgeable in various cloud services and best practices for cloud-native development. What I Offer: Custom Solutions: Tailored software solutions that meet your specific business needs and objectives. Quality Code: High-quality, maintainable, and well-documented code following best practices and industry standards. Full Lifecycle Development: Comprehensive services from requirement analysis and design to implementation, testing, and deployment. Cloud Expertise: In-depth knowledge of cloud infrastructure, enabling efficient and scalable cloud deployments. Communication: Clear, prompt, and transparent communication throughout the project lifecycle to ensure alignment and satisfaction. Whether you're looking to develop a new application from scratch, enhance an existing system, or modernize your legacy software, I have the expertise and dedication to deliver exceptional results. Let's collaborate to turn your vision into reality!

I am a Software Engineer with 5+ years of experience building robust applications and high-security deployment pipelines. My approach combines deep technical expertise with AI-accelerated development workflows. By leveraging coding agents like Codex and OpenCode, I dramatically boost delivery speeds without sacrificing the code quality or security required by my previous clients, including national government agencies and major financial institutions. Core Expertise: - Backend: Expert-level Spring Boot (Java/Kotlin), NestJS, and Hibernate. - Full Stack: Modern web development with Next.js, Nuxt.js, and Laravel. - DevOps: Kubernetes orchestration, Docker, and GitLab CI (Specializing in Harbor & RKE2), ArgoCD for GitOps. - Databases: High-performance optimization for PostgreSQL and MySQL. Proven Impact: - Financial Services: Developed secure backend systems for CIMB Niaga. - Industrial Logistics: Managed CI/CD pipelines for PT Krakatau Steel. - Government Infrastructure: Deployed Kubernetes-based applications for the Ministry of State Secretariat (Kemensetneg). I don’t just write code; I design automated, scalable systems. I provide the speed of modern AI tools with the oversight of a seasoned engineer.

I am a Senior Java Developer with experience since 2005. I have developed various Java projects in many industries. I'm also good with testing and quality assurance. Since 2012 I have worked with clients from Australia, Singapore, USA, Netherlands, Germany, Hongkong, and Greece. DETAILS: ✓Language: Java ✓Framework: Spring Framework (Spring Boot, Spring MVC, Spring-Security, Spring-WS, etc), Quarkus, Eclipse Vert.x, Play Framework, JHipster ✓Technologies & libraries: Hibernate/JPA, Web-Services (JAX-WS / SOAP, JAX-RS / REST, XML-RPC), Apache CXF, Jersey, SMPP, Apache Mina, Google Maps API (JS & Android), JSOUP, Mondrian/OLAP/OLAP4J, Apache Camel, Microservice Architecture, CloudSim, JWT (JSON Web Token), Apache Kafka ✓ Application Server: Tomcat, Jetty, Wildfly ✓ IDE: IntelliJ IDEA, Eclipse, Netbeans ✓ Database: MySQL, Oracle, PostgreSQL, MS SQL Server ✓ NoSQL DB: MongoDB ✓ Cache / In-memory software: Redis, Infinispan ✓ Payment processor: Braintree, Stripe, TokenEx (SecureNet, Payeezy, Worldpay US, Vantiv, MercuryPay) ✓ Front End: JSP, Thymeleaf, Velocity, HTML, CSS, JQuery, Bootstrap, AngularJS (1.x), Angular 2+, Highcharts, Ajax, JSON ✓ Build Tools: Maven, Gradle, Ant, SBT ✓ Mobile Notification: Google Cloud Messaging (GCM), Firebase Cloud Messaging (FCM), Apple ✓ Push Notification service (APNs) ✓ Test and code quality framework: JUnit, TestNG, SonarQube ✓ Reporting Tools: JasperReports ✓ Continuous Integration: Jenkins ✓ Collaboration Tools: JIRA, Asana, Pivotal Tracker, GitHub, Bitbucket, Slack ✓ Social Media / OAuth Integration: Facebook, Google ✓ Identity Management: Keycloak ✓ Authorization and authentication: Oauth2, OpenID, JWT ✓ Specification Documentation: Swagger / OpenAPI ✓ Containerization: Docker ✓ OS: Linux, Windows What I'm good for: ✓ Software/Back-End development ✓ Software design/architecture/solution ✓ Web application development ✓ System/business analyst ✓ Database design/architecture ✓ Software testing and quality assurance I'm available to hire up to 30 hours/week. I am looking forward to working with you! Thanks!

Having 10 years of experience of commercial and enterprise application development mainly Java Spring applications with technology stacks such as: - Java Spring (Boot) framework - Hibernate ORM - Relational database (SQL Server, MySQL/MariaDB) - AWS or GCP Involved and developed various type of project and application such as: - IoT application - Desktop Point Of Sales - Mobile (Android) application - Company Project Calculation System - Database content migration and processing tool - Mobile Point Of Sales - Back End / Web Service / API & Web Scraping