Hire the Best Spring Framework Specialists

Senior Backend Engineer with 10+ years of experience designing and building scalable backend platforms and cloud-based distributed systems. Strong expertise in Java, Spring Boot, and microservices architecture with production deployments on AWS. Experienced in building high-availability APIs, event-driven systems, and real-time services. Proven ability to improve system performance, reliability, and security while collaborating with global engineering teams. TECHNICAL SKILLS Languages: Java (8–17), JavaScript Backend: Spring Boot, Spring MVC, JPA, Hibernate, Google Guice, REST APIs, Microservices, WebSocket Frontend: AngularJS, Angular, React Messaging: Kafka, RabbitMQ Cloud & Infrastructure: AWS (EC2, S3, SQS, SNS, Lambda, Cognito, SES), Docker Databases: PostgreSQL, MySQL Observability: Elasticsearch, Logstash, Kibana (ELK) Security: OAuth2, JWT, Keycloak, OWASP Top 10 DevOps: Jenkins, Azure DevOps, Git, Bitbucket

Oracle Certified Professional Java Developer, Spring Boot developer, Full stack developer & solutions provider. Are you looking for all-inclusive, reliable microservices and responsive web app development? Or a full-stack developer who fully understands and fulfills your unique requirements with custom solutions? Do you have time or other constraints that prevent you from hiring full-time, in-house specialists for your project? Don’t worry! You’ve found the right person. I am Salman, a Full-Stack Microservices and Responsive Web developer with over 12 years of developing, implementing, and maintaining high-quality & customized backend and web-based software solutions across various industry sectors. I’m always willing to go above and beyond and make myself available, to answer queries, provide quick fixes or status updates, and meet tight deadlines. I have experience with: ✅ Java, Java Core, Java EE ✅ Spring Boot, Spring MVC ✅ Spring Boot Data, Spring JPA Data ✅ Spring Security ✅ Apache Struts ✅ Microservices ✅ RestAPI / Restful API Development ✅ OpenAPI/Swagger, Postman ✅ API Integration ✅ JPA, Hibernate ORM ✅ Java Concurrency ✅ Relational Database (RDBMS): MySQL, MSSQL Server, PostgreSQL, IBM DB2 ✅NoSQL Databases: MongoDB, AWS Dynamo DB ✅ Container Orchestration: Kubernetes, Helm Chart ✅ DevOps Skills: CI/CD, Kubernetes, Helm charts, Docker, Github Actions, GitHub, Ansible ✅Cloud Experience: GCP, AWS, AWS SDK ✅ JSP / Java Server Pages ✅ JSF / Java Server Faces / Jakarta Server Faces ✅ Thymleaf ✅ React JS, Bootstrap, Material CSS, HTML, CSS, Javascript, JQuery 🌟 WHY CHOOSE ME OVER OTHER FREELANCERS? 🌟 ✅ Quality-Oriented: I focus on providing VALUE to all of my Clients and Earning their TRUST. Delivering with quality is the key to gaining trust, and that's where I put my core focus. ✅ Over-Delivering: This is core to my work as a Freelancer. My focus is on GIVING more than what I expect to RECEIVE. I take pride in leaving all of my Clients saying "WOW." ✅ Adaptive to changes: During Software Development Lifecycle, it is highly likely some changes might be needed. I understand this and open to any changes. The end goal is to make my client achieve his target, and the objective is to make his/her business more profitable. ✅ Responsiveness: Being extremely responsive and keeping all lines of communication readily open with my Clients. ✅ Respect: Self-respect is everyone's right. I belong and thrive in a work culture where everyone's self-respect is of utmost importance. Maintaining relations with my clients to boost their self-respect is one of the core offerings that I can offer here. Have any questions? Want to discuss your project? Or do you want to get advice? Drop me a message, and we will have a quick call to understand your requirements so that to help you 100% according to your desires :)

I’m a Software Engineer with 4+ years of experience building and maintaining enterprise-grade backend applications using Java, Spring Boot, Hibernate, REST APIs, and SQL databases. I specialize in designing scalable backend systems, developing high-performance APIs, optimizing database operations, and integrating complex business platforms. Throughout my career, I’ve worked on document management systems, pharmaceutical serialization platforms, workflow automation, and large-scale data processing solutions. My core expertise includes: • Java (Core, EE) • Spring Boot & Hibernate/JPA • REST API Design & Development • PostgreSQL & MySQL • SQL Optimization & Database Design • Apache Camel Integrations • JSON/XML Processing • Git, Maven, Jenkins & CI/CD • Enterprise System Integration At Antares Vision Group, I contributed to CureSync, a pharmaceutical serialization platform used for compliance and product traceability, where I developed backend features, integration workflows, and optimized high-volume data processing. Currently, at AIGO, I develop enterprise document management solutions, building backend services, integrations, reporting modules, and workflow automation for business-critical applications. I focus on writing clean, maintainable code and delivering reliable solutions that help businesses scale efficiently. If you’re looking for a developer who can quickly understand complex requirements and deliver high-quality backend solutions, I’d be happy to help.

Full-Stack Developer | Tech Enthusiast | Tech Innovator | Contractor Java • React • React Native • Flutter • Next.js • Laravel • jQuery • MySQL • MVP Builder Hi, I’m a Java Developer with extensive experience in software development, specializing in backend, and full-stack solutions. I build high-performance, scalable applications using Java, Spring Boot, and modern web technologies. My expertise covers RESTful API design, microservices architecture, and cloud-based solutions with Amazon Web Services (AWS) and Docker. ✔ Core Skills & Technologies: I leverage a versatile tech stack to build scalable, secure, and high-performance applications, ensuring reliability and efficiency. 🟢 Programming Languages: Java, JavaScript, TypeScript, PHP – Used to develop enterprise applications, handling thousands of daily users. 🟢 Frameworks & Libraries: Java Spring Boot, Spring Framework, Hibernate, React, Next.js, jQuery – Optimized system performance, improving response times by 25%. 🟢 Database Management: MySQL, SQL, MongoDB – Designed and maintained databases processing over 10K+ transactions monthly. 🟢 Web & Application Development: Web Development, Java Development, Desktop Applications, Standalone Applications, enhancing client operations and user engagement. 🟢 DevOps & Deployment: Docker, Apache Tomcat, Git – Streamlined CI/CD pipelines, reducing deployment time by 30%. 🟢 Software Engineering: Software Architecture & Design, Software Development, Software Debugging – As a Java Developer I developed scalable solutions supporting 50K+ active users. 🟢 UI/UX: HTML CSS JavaScript, HTML5, CSS3 – Created responsive interfaces that increased user engagement by 20%. 🟢 Testing & Quality Assurance: JUnit, Software Testing – Reduced production issues by 40% through automated and manual testing. 🔧 My Toolkit Frontend: React, Next.js (App + Pages Router), TailwindCSS, shadcn/ui, JSP Backend: Java, PHP, PostgreSQL, MongoDB, MySQL DevOps: Vercel, AWS (Lambda, S3, EC2), Azure, Docker, GitHub Actions ✅ Why Clients Work With Me 🟢 Problem-Solving Mindset: Writing clean, maintainable, and well-documented code for scalability 🟢 Client-Centric Approach: Aligning technology solutions with business goals 🟢 Agile Software Development: Iterative development, CI/CD pipelines, continuous integration 🟢 Performance & Security Focused: Optimized queries, security best practices If you're looking for an experienced Java Developer, Senior Java Developer, Full Stack Developer, Java Spring developer, Javascript Developer, PHP Developer, Java developer India to build scalable, high-performance applications, let’s connect!🚀 Last updated: 23.12.2025

Senior Java / Spring Boot developer with 1,000+ Upwork hours, 37 completed projects, a 100% Job Success Score, and a 4.9/5 client rating. I specialize in backend development, REST APIs, API integrations, and maintaining or extending existing Java/Spring applications. One of my long-term Upwork engagements has lasted 4+ years and 850+ hours, supporting and developing a Java open-source project. I’m comfortable working with existing codebases, understanding unfamiliar systems, fixing bugs, adding features, and delivering maintainable solutions without unnecessary rewrites. What I can help you with: • Java / Spring Boot backend development • REST API design and development • Spring MVC / Spring Framework • Hibernate / JPA and SQL • Third-party API integrations • Backend bug fixing and troubleshooting • Existing codebase maintenance and feature development • Refactoring and improving legacy Java applications • Unit testing with JUnit • Node.js backend development • React when full-stack work is required I’m particularly comfortable with projects where you already have an application and need an experienced developer to understand the codebase, fix issues, implement new features, or continue development. I value clear communication, clean code, practical solutions, and long-term collaboration. If you have an existing Java/Spring project that needs development or maintenance, send me the details and I’ll take a look.

As a Director of Technology, Leonardo combines deep technical expertise with strategic leadership. He excels at building resilient backends, driving architecture decisions, and aligning technology with business goals. Leonardo is a Senior Java Developer and AWS Certified Solutions Architect with 15+ years of experience designing cloud-native systems and leading cross-functional teams. He has delivered scalable, mission-critical platforms for high-growth startups and enterprises across Latin America. 🔹 Java, Spring Boot, REST APIs, Hibernate, Maven, Gradle 🔹 AWS (EC2, S3, Lambda, Route 53, CloudFront, IAM, CloudWatch, ECS, ECR, Load Balancers) 🔹 Microservices, RabbitMQ, asynchronous/event-driven architecture 🔹 MySQL, PostgreSQL, SQL optimization, Redis, Liquibase 🔹 CI/CD pipelines, Docker, Git, Bash scripting, Linux administration 🔹 Reporting & analytics: Tableau, Power BI, MyDBR, complex SQL views 🔹 Team leadership, agile delivery, digital transformation, mentoring tech teams