Top-Rated Java Developer | $40K+ Earned | 100% Job Success With over $40K earned on Upwork, I am a highly skilled Java Developer with experience across 8 international projects. My expertise has consistently earned me 5-star ratings, making me a top-rated freelancer on the platform. I specialize in Java and J2EE technologies, delivering robust and scalable solutions that exceed client expectations. Highlights: - 8 International Projects successfully completed, including complex real-time systems and enterprise applications. - $12,460 Project for Java Stream Analyzer using Esper CEP and Spring Boot. - 500+ Hours dedicated to delivering high-quality solutions for clients globally. Client Feedback: "Ashish is the best developer we’ve worked with so far!" "Exceptional Java expertise with a perfect blend of professionalism and dedication." Looking for a reliable and proficient Java Developer? Let’s connect and bring your project to life with top-tier development services. Availability: More than 30 hours/week | $30/hr

With over 25 years in software development, including two decades as a remote work freelancer, I bring a lot of expertise to your Java projects. I've partnered with over 40 companies across the globe, successfully navigating more than 60 diverse software initiatives – from intricate small-scale solutions to complex enterprise systems. My commitment to efficiency is amplified by my early adoption of AI tools in 2024, ensuring faster project completion without compromising quality. My journey began with formative years at Nokia Mobile Phones (1995-1997) and other Finnish IT firms, followed by international experience in Germany (2000-2002). Today, I continue to deliver top-tier remote development services from my base in Southeast Asia, offering a blend of deep technical skill, broad project experience, and a results-driven approach.

𝗝𝗮𝘃𝗮 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 🖥️, 𝗦𝗽𝗿𝗶𝗻𝗴 𝗕𝗼𝗼𝘁 🌱, 𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 🛠️, 𝗔𝗪𝗦 ☁️, 𝗥𝗘𝗦𝗧 𝗔𝗣𝗜𝘀 🔗 I help businesses build scalable, secure, and high performance backend systems that handle growth without slowing down. Most applications work well in the beginning. The problems start when traffic increases. APIs become slow, deployments become risky, and maintaining the code becomes expensive. That's where I come in. 𝗔𝘀 𝗮 𝗦𝗲𝗻𝗶𝗼𝗿 𝗝𝗮𝘃𝗮 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗶𝘁𝗵 𝟭𝟯+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲, I've helped startups and enterprise companies design, build, and optimize backend systems that scale reliably in production. I am not just a Java Developer who writes code. I help businesses create backend architectures that support growth, improve performance, and reduce technical debt. 𝗥𝗲𝘀𝘂𝗹𝘁𝘀 𝗜'𝘃𝗲 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝗲𝗱 • Built scalable Java Developer solutions serving thousands of daily users with high availability. • Designed Microservices architectures that reduced deployment risks and improved system reliability. • Developed Spring Boot applications that improved API response times and backend performance. • Helped businesses migrate legacy systems into modern Java Developer architectures. • Delivered production ready backend platforms for startups and enterprise organizations. Every project starts with a business goal and ends with measurable results. 𝗪𝗵𝗮𝘁 𝗜 𝗗𝗼 𝗝𝗮𝘃𝗮 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 • Custom backend application development • Enterprise Java solutions • Legacy application modernization • Backend performance optimization • Secure and maintainable architecture 𝗦𝗽𝗿𝗶𝗻𝗴 𝗕𝗼𝗼𝘁 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 • REST API development • Spring Security • Spring Data JPA • Authentication and authorization • Scalable backend services 𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 • Distributed systems design • Service decomposition • API Gateway implementation • Event driven architecture • System scalability and resilience 𝗔𝗪𝗦 𝗖𝗹𝗼𝘂𝗱 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 • AWS deployment and infrastructure • EC2, ECS, Lambda • Cloud architecture design • Monitoring and optimization • Cost effective cloud operations 𝗥𝗘𝗦𝗧 𝗔𝗣𝗜 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 • API design and implementation • Third party integrations • Payment gateway integration • Documentation and testing • Secure API architecture 𝗪𝗵𝗮𝘁 𝗠𝗮𝗸𝗲𝘀 𝗠𝗲 𝗗𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁 Most Java Developers focus only on writing code. I focus on the business impact of the software. 𝗕𝗲𝗳𝗼𝗿𝗲 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗮𝗻𝘆𝘁𝗵𝗶𝗻𝗴, 𝗜 𝗮𝘀𝗸: • Will this architecture still work when traffic grows? • Can future developers maintain it easily? • Is it secure? • Is it optimized for performance? • Can it scale without major rewrites? This approach helps clients avoid costly problems later. 𝗪𝗵𝗼 𝗜 𝗪𝗼𝗿𝗸 𝗕𝗲𝘀𝘁 𝗪𝗶𝘁𝗵 • Startups building new SaaS products • Businesses scaling existing applications • Companies modernizing legacy Java systems • Teams adopting Microservices architecture • Organizations migrating workloads to AWS • Businesses needing secure and scalable REST APIs 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 Java, Spring Boot, Spring Security, Hibernate, JPA, Microservices, AWS, Docker, Kubernetes, REST APIs, Kafka, RabbitMQ, PostgreSQL, MySQL, MongoDB, Redis, Maven, Gradle, Git, CI/CD, Jenkins 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗛𝗶𝗿𝗲 𝗠𝗲 • 13+ years of Java Developer experience • Clean, maintainable code • Scalable backend architecture • Strong communication • Reliable delivery • Long term technical thinking If you're looking for a Java Developer who understands both software engineering and business objectives, let's discuss your project. Send an invitation and I'll respond within a few hours. Keywords: Java Developer, Senior Java Developer, Java Backend Developer, Java Software Engineer, Spring Boot Developer, Spring Boot Expert, Java Application Development, Enterprise Java Developer, Java Web Services, REST API Developer, RESTful API Development, Backend Developer, Backend Engineer, Microservices Developer, Microservices Architecture, Distributed Systems, AWS Developer, AWS Cloud Engineer, Java AWS Developer, Docker, Kubernetes, Kafka, RabbitMQ, Hibernate, JPA, Spring Security, API Integration, Database Design, PostgreSQL, MySQL, MongoDB, Redis, SaaS Backend Development, Scalable Application Development, Cloud Native Applications, Java Consultant, Software Architecture, System Design, Enterprise Application Development, Performance Optimization, CI/CD, Jenkins, Maven, Gradle, Full Stack Java Developer.

✅ 8+ Years of Java Development Experience ⚡ Full-Cycle Backend Development & Architecture ⚡ AI-Powered Development for Faster Delivery & Better Code Quality 👀 Click Invite or Hire for Scalable Java Backend Solutions Looking for a Java Developer who can build scalable backend systems, SaaS platforms, enterprise applications, and cloud-native solutions designed for long-term growth? For 8+ years, I have helped startups, SaaS companies, fintech businesses, AdTech platforms, and enterprise organizations build secure, scalable, and high-performance software using Java, Spring Boot, PostgreSQL, MySQL, Kafka, GraphQL, AWS, Docker, Kubernetes, and modern cloud technologies. From backend architecture and microservices development to legacy application modernization, API integrations, troubleshooting, cloud deployments, and AI-assisted engineering, I deliver production-ready solutions built to scale. 👉 WHAT YOU GET: ✔️ Java Backend Development & Software Architecture ✔️ Spring Boot Applications & Microservices ✔️ REST APIs, GraphQL APIs & Integrations ✔️ Cloud-Native Applications using AWS ✔️ AI-Assisted Development & Automation ✔️ Legacy System Modernization ✔️ Long-Term Support, Maintenance & Optimization 🏆 KEY ACHIEVEMENTS: ✔️ 8+ years building Java, Spring Boot, and enterprise backend applications ✔️ Built scalable SaaS platforms, fintech applications, AdTech systems, and enterprise software ✔️ Maintained and enhanced 15+ production microservices ✔️ Contributed to Adstrome, TrustArc, Acquia DAM, and Digi-Docket ✔️ Designed secure APIs, event-driven systems, and scalable architectures ✔️ Improved application performance through optimization and modernization ⚙️ CORE EXPERTISE: ✔️ Java, Core Java, Java EE, Spring Boot, Spring MVC, Spring Security ✔️ Hibernate, JPA, JDBC, MyBatis, ORM Frameworks, REST APIs, GraphQL APIs ✔️ Microservices Architecture, Apache Kafka, Event-Driven Systems ✔️ PostgreSQL, MySQL, Snowflake, Query Optimization ✔️ AWS, Docker, Kubernetes, Jenkins, Maven, Gradle, Git, GitHub, Bitbucket, Version Control Systems ✔️ Authentication, Authorization, RBAC, Multi-Tenant SaaS ✔️ ZK Framework & Enterprise Web Application Development 🛠 DEVELOPMENT & MAINTENANCE: ✔️ Web Application Development & Enterprise Software Development ✔️ Spring MVC & ZK Framework Application Development ✔️ Legacy Application Maintenance, Modernization & Application Upgrades ✔️ Feature Development & Application Enhancements ✔️ Bug Fixing, Root Cause Analysis & Production Support ✔️ Performance Bottleneck Analysis & Optimization ✔️ Memory Leak Detection & Resolution ✔️ Security Vulnerability & CVE Remediation ✔️ Third-Party API Integration & Business Workflow Automation ✔️ Performance Optimization & Scalability Improvements ☁️ CLOUD & DEVOPS: ✔️ AWS Cloud Services, Docker Containerization & Containerized Application Deployment ✔️ Kubernetes Container Orchestration for Scalable Cloud Infrastructure ✔️ Linux-Based Server Systems, Linux Server Administration & Linux Server Troubleshooting ✔️ Apache Tomcat Installation, Deployment, Monitoring & Performance Tuning ✔️ CI/CD Pipelines, Jenkins Automation, Git, GitHub, Bitbucket & Version Control Systems ✔️ Web Application Troubleshooting, Production Environment Support & Incident Resolution 🧪 TESTING & QUALITY: ✔️ JUnit, Mockito, Unit Testing & Integration Testing ✔️ Test-Driven Development & Automated Testing ✔️ API Testing, Debugging & Log Analysis ✔️ Root Cause Investigation & Production Stability ✔️ Code Quality Improvements & Maintainable Software Development ✔️ Regression Testing & Application Reliability Improvements 🤖 AI-ENHANCED ENGINEERING: ✔️ AI-Assisted Development & AI-Powered Coding Workflows ✔️ OpenAI API Integration, LLM Workflows & AI Automation ✔️ AI-Assisted Testing, Refactoring & Documentation ✔️ Faster Delivery Through AI-Enhanced Engineering 🏢 INDUSTRY EXPERIENCE: ✔️ SaaS Platforms & Enterprise Applications ✔️ AdTech & Programmatic Advertising ✔️ Fintech & Loan Processing ✔️ Privacy & Compliance Systems ✔️ Digital Asset Management ✔️ Multi-Tenant & White-Label Solutions 🚀 WHY CLIENTS CHOOSE ME: ✔️ 8+ Years of Java Development Experience ✔️ Enterprise SaaS & Microservices Expertise ✔️ Strong Spring Boot & Cloud-Native Skills ✔️ Scalable, Secure & Maintainable Solutions Whether you need to build a backend platform from scratch, scale an existing SaaS application, maintain a legacy system, resolve performance bottlenecks, remediate security vulnerabilities, implement microservices, modernize enterprise software, deploy applications on Tomcat or Linux-based server systems, integrate AI capabilities, or optimize application performance, I can help. Looking for a Java Developer, Senior Java Developer, Java Backend Developer, Spring Boot Developer, Java Architect, Backend Engineer, Enterprise Software Developer, API Developer, GraphQL Developer, AWS Developer, Cloud Engineer, Kafka Developer, Software Architect, Backend Architect, or Java Consultant?

I am a highly experienced Backend Developer with over 5 years of experience in Java/Spring development. I have a strong portfolio, having worked with companies such as Sahmik, Techrivo, Nestle Nespresso, PowerFolder, and SQLI. I have expertise in Java/JEE/Hybris development, and am proficient in HTML 5/CSS 3, JavaScript, ReactJS (basic), Spring Framework, Hibernate, Hybris, Swagger, and Web Services (SOAP, REST). I have a solid understanding of Clean Code, SOLID, GRASP, Effective Java, and Design Patterns principles. I have experience with RDBMS such as Oracle and MySQL and have used tools like Junit, Mockito, IntelliJ, Bitbucket, Git, Maven, Ant, Nexus, Sonar, JIRA, and Jenkins. I am well-versed in Scrum methodology and have experience with Linux, Tomcat, and nginx servers. In addition to my technical skills, I am fluent in Arabic, French, and English, and am a certified Java SE 8 Oracle Certified Associate (OCA). I am dedicated to delivering high-quality, efficient, and well-designed solutions to my clients and am always eager to learn and improve my skills.

I'm a Java-developer with 7+ experience in building enterprise applications. Working for the customer, I have 100 percent success and solve problems in the shortest possible time. My skill set includes technologies for backend: ⭐Spring ⭐Hibernate ⭐SQL ⭐Kotlin ⭐Apache Tomcat ⭐Jboss ⭐Maven ⭐Gradle Frontend: ⭐Angular ⭐Typescript ⭐Vaadin DevOps: ⭐Jenkins ⭐Teamcity ⭐uDeploy ⭐Kubernetes ⭐Openshift ⭐Linux ⭐Bash ⭐Python ⭐Groovy Also I developed several applications from scratch: ⭐Telegram bot for real estate searching ⭐Telegram game: text RPG-game ⭐Spring-boot application for working with customer ⭐Android puzzle game I am ready to work and develop professionally, contributing to the growth of your organization.

I am a Senior Full‑Stack Java Developer with 12+ years of experience, delivering scalable and secure enterprise applications using Java, Spring Boot, and Microservices. I also leverage AI‑assisted development tools in my daily workflow to improve delivery speed, code quality, and maintainability. My expertise spans backend architecture, full‑stack development, cloud, integrations, and modern front‑end frameworks such as Angular and React. What I Do for Clients- Build and maintain enterprise‑grade Java applications Design and implement Microservices using Spring Boot and Spring Cloud Create responsive front‑end applications using Angular and React Integrate legacy systems and third‑party services using MuleSoft Improve performance, scalability, and system stability AI‑Assisted Development I use AI‑assisted development tools as part of my daily workflow to increase efficiency while maintaining full control over architecture and code quality. AI Tools: ChatGPT, Claude, GitHub Copilot, OpenAI APIs for AI‑assisted coding, reviews, automation, and rapid prototyping. Backend Development - Languages: Java, J2EE Core Java: OOP, Multithreading, Exception Handling, Data Structures Frameworks: Spring, Spring Boot, Spring MVC, Spring Security, Spring WS, Spring Cloud ORM & Persistence: Hibernate, JPA, JDBC Web Services: REST (JAX‑RS), SOAP (JAX‑WS), XML‑RPC Microservices Architecture: Spring Cloud, Netflix OSS, service discovery, load balancing, fault tolerance Messaging: Apache Kafka Front‑End Development Expertise Frameworks: Angular, AngularJS, React.js Web Technologies: HTML5, CSS3, SASS, Tailwind CSS JavaScript: JavaScript, jQuery, AJAX Databases: MySQL, PostgreSQL, Oracle, DB2, NoSQL Integration and Middleware MuleSoft for system and API integrations Secure API development with authentication and authorization Third‑party API and legacy system integration Cloud, DevOps, and Tools Cloud Platforms: AWS: EC2, Lambda, S3, Redshift, SageMaker, Cognito Azure: Virtual Machines, Blob Storage, Azure AD, Data Factory Containerization: Docker, Kubernetes Testing: JUnit, Mockito Version Control: Git, SVN, GitHub Tools: Eclipse, NetBeans, STS, VS Code, Postman, MySQL Workbench Hands‑on experience with EDI systems and AS400 (IBM i) to Java conversion, transforming legacy business logic into modern Java and Spring Boot applications with improved scalability and maintainability. Ready to collaborate? - Click “Hire Me” or send an invite, and let’s discuss how I can add value to your project Keywords Java Developer, Senior Java Developer, Full Stack Developer, Full Stack Java Developer, Backend Developer, Spring Boot Developer, Microservices Developer, Spring Cloud, Spring Security, REST API Developer, SOAP API Developer, Hibernate, JPA, Kafka Developer, MuleSoft Developer, Angular Developer, React Developer, MySQL, PostgreSQL, Oracle, NoSQL, Docker, Kubernetes, AWS , Azure , JUnit, Mockito, JasperReports, AI Assisted Development, GitHub Copilot

📌 Need a reliable Java developer who can take your system from idea to deployment—fast, clean, and scalable? I’ve been doing exactly that for 14+ years as a Java Spring Boot Developer. As a senior Java Spring Boot Developer, I help businesses build high-performance, cloud-native applications using Java Spring Boot, microservices architecture, and modern engineering practices. Whether you need a Spring Boot developer, a backend architect, or a hands-on Java developer, I bring both technical depth and product thinking. I specialize as a Java Spring Boot Developer in building modular, scalable, and cloud-ready systems. As a Spring Boot developer, I design clean architectures for Java microservices, real-time systems with Kafka or RabbitMQ, and high-load applications. As a Java developer, I ensure systems are maintainable, testable, and optimized for long-term growth. Working as a Java Spring Boot Developer, I frequently collaborate with frontend teams using Spring Boot React and Spring Boot Angular stacks. As a Spring Boot developer, I align backend logic with frontend needs, ensuring smooth integration across JavaScript, HTML CSS JavaScript, and UI layers. My experience as a Java developer also includes working with JavaFX interfaces when needed. Cloud is a key part of my work as a Java Spring Boot Developer. I’ve deployed scalable systems on AWS and GCP, acting as both AWS and GCP architect. As a Java developer, I work with AWS DevOps tools like Lambda, API Gateway, Cognito, S3, and EC2. As a Spring Boot developer, I integrate backend services with GCP tools such as Firestore, Pub/Sub, and Cloud Functions, ensuring performance and reliability. Databases are another strong area. As a Java developer, I’ve worked with PostgreSQL, MySQL, SQL Server, Oracle, MongoDB, and Cassandra. As a Spring Boot developer, I design efficient schemas, optimize queries, and handle large-scale data systems. Every Java Spring Boot Developer project I take on includes a strong focus on database performance and scalability. Clean code and testing are essential in my workflow as a Java Spring Boot Developer. I rely on JUnit testing, TDD, and CI/CD pipelines. As a Java developer, I use Maven, Docker, GitHub Actions, and Jenkins to ensure stable delivery. As a Spring Boot developer, I focus on building systems that are reliable, testable, and easy to extend. 📊 Snapshot of My Expertise 💻 Delivered 20+ systems as a Java Spring Boot Developer, including fintech platforms and SaaS applications ☁️ Worked as a Java Spring Boot Developer and cloud architect using AWS and GCP infrastructure 📊 Optimized large-scale databases as a Java developer, improving performance by up to 60% 🔁 Built intelligent systems integrating Spring AI as a Spring Boot developer 🔐 Secured APIs using OAuth2 and Hibernate as a Java Spring Boot Developer 🧪 Maintained high test coverage using JUnit and CI pipelines as a Java developer 🧰 Collaborated across teams delivering full features as a Spring Boot developer If you’re looking for a Java Spring Boot Developer, a reliable Java developer, or an experienced Spring Boot developer who can handle complex systems and deliver scalable solutions I’m ready to help. 📩 Send me a message I usually reply within a few hours.

I am a Java/J2EE Developer with 7+ years of experience in building scalable and secure web applications using object-oriented and client–server technologies. I specialize in backend development, REST APIs, and enterprise-grade solutions. 🚀Core Technologies Java, Core Java, Java Collections Framework, Spring Framework, Spring Boot, Spring MVC, Java Servlet API, Java Persistence API (JPA) 💻 Web & Application Development Web Application Development, Application Testing & Maintenance, RESTful API Development, Microservice-ready Architecture 🛠️ Low-Code Platforms Case360 – Car Damage Assessment Application Appworks (LowCodeGuide) – BSI Enterprise Application 📂 Tools & Development Practices Git, GitHub, Version Control, Agile Software Development, Jira 🏆 Projects & Achievements CRM Application using Spring Boot APIs ERP System for Construction Sites (Project-based Spring Boot solution) Car Damage Assessment Application (Case360) BSI Application (Appworks Low-Code Platform) Academic Project: Organization Management System for student data, assignments, and class records I focus on delivering clean, maintainable, and business-oriented solutions with strong attention to performance and scalability.

I'm a Master’s-level Software Engineer with deep expertise in building scalable SaaS applications using Java, Spring Boot, and AWS. My contributions range from enhancing cloud security solutions to optimizing server-side performance in high-load environments. Over the years, I've delivered robust Java backends, designed efficient RESTful APIs, and implemented microservices architectures that power modern, enterprise-grade applications. I'm comfortable deploying services via Docker and Kubernetes, and automating delivery pipelines for smooth CI/CD workflows. 🔧 Core Competencies: Java & Spring Boot: Clean, maintainable backend systems built for scale. AWS Integration: EC2, RDS, Lambda, and more — cloud-native and secure. Microservices & REST APIs: Modular, testable systems with strong separation of concerns. Performance Optimization: Profiling, refactoring, and tuning Java apps for speed. DevOps Tooling: Docker, Kubernetes, Git, CI/CD pipelines. Mentoring: Guiding junior developers and sharing industry best practices. I'm passionate about turning business ideas into high-quality software — quickly, efficiently, and with long-term maintainability in mind. Let’s connect and build something impactful.