Hire the Best J2SE Specialists
in Indonesia

A seasoned Software Development Engineer with over 8 years of hands-on expertise in designing, developing, and deploying robust software solutions using Java. Proficient in the complete software development lifecycle, from conceptualization to maintenance, with a strong focus on scalable and high-performance applications. Skilled in architecting solutions based on microservices architecture, leveraging cloud technologies to build resilient and adaptable systems. Adept at collaborating with cross-functional teams to deliver innovative solutions meeting business objectives while ensuring scalability, flexibility, and optimal performance in cloud-based environments. 🚀 Coding enthusiast, enjoying time with some code and drinking a coffee. ---------- I've always been passionate about coding and that's why I've chosen to study Information Systems at the Telkom University of Bandung. My Stories: -After studying at the university I got my first job as a Junior Java Developer with Spring 4 at a tech company based in the same city. - After 1 year of hard work, I was promoted to become a team lead. And we migrate the development framework into Spring Boot. - The next 1 year as a Team Lead, I was promoted to become a Section Head of Back-End Application Development. And also being a head of over 26+ Spring Projects. - I'm young and passionate, still need to learn something new and find new experiences. I got my Section Head position only after less than 2 years of working experience. And still counting till now. - Always learning for the new journey. ---------- ✅ Tech-Stack Spring Framework, Spring Cloud, Spring Boot, REST API, Docker, JUnit Testing, AssertJ, Mockito, JSON, XML, JMS, Kafka, RabbitMQ, Microservices, CRONjob, Dropwizard, NewRelic, ArgoCD, Kibana, Jira, Confluence ✅ Java, Go, Python, AWS Lambda, AWS MSK, AWS, Linux, SQL, MySQL, PostgreSQL, MongoDB, Solr, JPA, Hibernate, Redis, CassandraDB, ElasticSearch, AWS DynamoDB, Liquibase, Flyway, AWS SQS, MJML, Handlebar ✅ Apache Commons, Lombok, Jackson, GSON, Office OpenXML, XMLBeans, Apache POI Maven, Git Scrum, Agile Collaborate, English Communication

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.

I help fintech and SaaS teams build, stabilize, and modernize Java backend systems using Java 17/21, Spring Boot, microservices, Kafka, and PostgreSQL. I specialize in production APIs, legacy modernization, and complex enterprise workflows. I can help with: • Java 17/21 and Spring Boot REST APIs • Microservices and event-driven architecture with Kafka • Legacy Java/JBoss modernization • PostgreSQL, JPA and Hibernate query optimization • Spring Security, JWT, OAuth2 and role-based access control • Payment, banking and financial workflow integrations • Production debugging, refactoring and automated testing • Docker, Kubernetes and AWS deployments I am most useful when a backend has become slow, difficult to maintain, or risky to change. I can investigate the current architecture, identify the actual bottleneck, propose a practical remediation plan, and implement the agreed changes without unnecessary rewrites. Recent experience includes financial transaction systems, approval workflows, SaaS platforms, real-time dashboards, and multi-service backend modernization. My deliverables normally include clean source code, automated tests, API documentation, database migration scripts where required, and a clear handover for your engineering team. Send me the current issue, architecture, or repository context, and I will outline the first investigation steps before we begin.