Hire the Best J2EE Developers
in Indonesia

Hi there You can call me Wiwit, I'm from Indonesia I started my career as a web developer in 2010 and started working on Upwork from 2015. I have good experience in developing web based enterprise solutions using Java technologies like J2EE, JSF, REST, SOAP, Hibernate and Springboot Proficient with angularjs, reactjs and good experiences with any popular js family. I also very good for debugging and tracking. I'm looking for customers for long-term cooperation. I would like to offer you my skills and experience to solve your issues.

Hi there 👋 I am a senior software engineer with more than 18+ years of experience in the industry with a can-do thinking in mind. As a fullstack developer heavy on the backend, I have a wide range of expertise in the backend, frontend, devops, and system design. I am proficient with Java Spring Boot and familiar with Spring Cloud, Spring AI, Spring Data, Micronaut, Hibernate, JUnit, Mockito, AssertJ, K6, Thymeleaf, React, Vue, Angular, Tailwind, Bootstrap, Docker, Kubernetes, Helm, GCP, AWS, Azure and VPS. Using various servers like Postgres, MySQL, Oracle DB, SQL Server, MongoDB, Redis, Elasticsearch, Vespa, Sqlite, BigQuery, Tomcat, Jetty, Undertow, Netty, Nginx, Apache, Node, ActiveMQ, RabbitMQ, Kafka, PubSub, Auth0, Keycloak, LDAP, Eureka, Consul, Vault, Sleuth, Resilience4j, Minio, S3, Alfresco, Jenkins, Stripe, Twilio, OpenAI, Azure AI, Gemini AI, and OpenRouter AI. Using applications like GitHub, GitLab, BitBucket, Jira, Redmine, Trello, Notion, Figma, SSH, TMux, Git, NVim, Copilot, ChatGPT, Gemini, Claude, Codex, VSCode, Cursor, Antigravity, IntelliJ, DBeaver, Insomnia, Postman, and Chrome. The most common projects I work with are API services, web applications, enterprise applications, and AI platform integration using architecture like monolith, modulith, and microservice, using protocols like REST, GraphQL, SOAP, gRPC, JSON-RPC, XML-RPC, WebSocket, Webhooks, Polling, OpenAPI, and AI Platform Integration API with HITL (Human in the loop) good practices. I am open to discussion and project work. Feel free to hire me. Thanks, Warmly Regard.

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!

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.

Hello, I have 18+ years of experience working in ICT domain. Currently working as developer (Java, Node.js) and DevOps. Here's the shortlist of my experiences: Backend (Java): Spring Boot, JPA, Security, Batch. Backend (Javascript): Node.JS, ExpressJS, NestJS. Serverless: AWS Lambda. Frontend: Thymeleaf, Vue.js, React.js. Charts: Amcharts, Charts.js, D3.js Database: PostgreSQL, MySQL, Derby, MongoDB, DynamoDB. AWS: EC2, VPC, RDS, S3 Elastic Beanstalk, Cognito, SES, CloufFormation, ECS, ELB. Virtualization: Docker, docker-compose. Scripting: Perl, Shell/Bash, AWK. Payment gateway; Stripe, Braintree. Tools: Maven, Gradle, Git, IntelliJ, Selenium. Linux: Debian, Ubuntu, RedHat, CentOS. CI/CD: CodePipeline, Jenkins, Circle CI, Codemagic. Protocol & Spec: LDAP, ASN.1, Diameter, Radius, SMPP, HTTP (REST, SOAP). Other knowledge: Twilio Video API, Spark, Kafka, FreeRadius, Captive Portal, I also would love to support you to design an end-to-end solution and lead your development team to achieve your business goals. Thank you for visiting my profile. Feel free to contact me even to say hi or want to discuss about your project or idea. I hope it worth your time.

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