Hire the Best Java EE Developers
in Indonesia

I turn a business process nobody has written down properly into a design an engineer can build — then stay through implementation. The one I point to most: a single sign-on ecosystem I designed and built for 2,600+ users across Java, PHP and .NET. 13+ years, mostly enterprise and public-sector systems. What that has looked like: • Single Sign-On ecosystem (PT Perkebunan Nusantara IV) — initiated and designed the ecosystem where no prior internal effort existed, built the Java EE core myself, and designed the Portal and Access Management components. Two phases, roughly three months, six people. Replaced separate logins for 2,600+ users across Java, PHP, and .NET applications. • Performance management rebuild (PT Perkebunan Nusantara IV) — led a seven-person team rebuilding an appraisal system on Java EE, Service-Oriented Architecture, and SQL Server stored procedures. Four months, around 600 executive users. The data and performance failures reported against the previous version did not recur in the observed appraisal period. • Customs import integration (PT Teknoglobal) — built two Java EE flat-file parsers plus document-validation and multithreaded background-processing services for a national customs system, consuming import and banking data delivered through an IBM MQ messaging layer. I owned those modules; I did not build the messaging infrastructure and I did not lead the wider project. • Mobile content ecosystem, 2023–2026 — architected and led the v2 backend rebuild after the original could not scale past inconsistent data and a schema that resisted new features. Designed the database, coded the core processing, and led a team of QA, mobile, and web developers. A compatibility API let existing clients run against the new backend, so the cutover carried users across without significant disruption. • Most recently — specified and led a C#/.NET 8 WPF refactoring that separated the user interface from background services over gRPC, then built a REST-based Cloud Sync worker linking the desktop client to a Next.js platform. I handed that work over on completion of my scope in July 2026; the client team continues development. Since August 2026 I work independently under my own trade name, currently delivering a landing page and registration flow for a member-based organization (Go, MariaDB). Where I am useful: enterprise integration, single sign-on and access flows, internal tools and workflow systems, procurement and ERP-adjacent processes, legacy modernization, and backend work in Java, C#/.NET, or PHP/Laravel. Where I am not: SAP configuration or ABAP, mobile-first product design, data science, and anything requiring a cloud architecture certification I do not hold. I work to an agreed schedule, put delivery risks in writing early, and tell you when something I designed turns out to be wrong.

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. -- a full-time freelancer with currently one active client --

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