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🚀 Java Spring Boot Developer | Backend Engineer | API & Deployment Specialist I’m a Java Developer with over 4 years of professional experience in building, deploying, and maintaining robust backend systems. I specialize in Spring Boot, Hibernate ORM, and REST-based web services, with hands-on experience across development, staging, and production environments. From API development to server deployment and front-end integration, I bring a full-stack mindset and a detail-oriented approach to every project. ⸻ 💼 What I Can Help You With: ✅ Java Backend Development • Spring Boot, Hibernate ORM, Spring Security • REST API development with Jersey framework • Exception handling, validations, Flyway for DB migrations • CSV parsing, iText for PDF generation, Hibernate Envers for auditing ✅ DevOps & Deployment • Application profiling in Dev, Stage, and Prod • Docker-based containerization • SMTP integration and email sending via Spring • Hands-on experience deploying apps on promises ubuntu servers ✅ Front-End & UI Integration • Bootstrap, jQuery, SweetAlert, Backbone.js • JSP, Servlets, AJAX for dynamic user interfaces ✅ Tools & Frameworks • GitHub, SVN for version control • Swagger/OpenAPI for API documentation • Quartz Scheduler for task automation • Apache Tomcat for application hosting ⸻ 💡 Why Work With Me: • Strong foundation in both backend and UI integration • Fast learner with proactive problem-solving • Clean, maintainable code with real-world performance in mind • Dedicated to delivering value through scalable and reliable solutions Let’s connect and bring your Java-based project to life — with clarity, precision, and quality that lasts.

🚀 I build scalable backend systems and full-stack applications for SaaS platforms, startups, and enterprises — with 5+ years shipping production Java / Spring Boot systems, and hands-on MERN stack experience when projects call for a JavaScript-based full-stack build. I currently work as a Senior Software Engineer on Xcelerate, a microservices-based SaaS platform for restoration companies, where I develop and maintain 20+ Spring Boot microservices, build real-time messaging systems, and integrate third-party platforms like QuickBooks, RingCentral, Zapier, and Encircle. What I can help you build: ✔ Java & Spring Boot backend systems ✔ Microservices architecture & REST APIs ✔ MERN stack applications (MongoDB, Express, React, Node.js) ✔ Third-party integrations (QuickBooks, Stripe, Twilio, Zapier, RingCentral) ✔ Cloud deployments — AWS, Azure, GCP ✔ CI/CD pipelines (Jenkins, GitHub Actions), Docker ✔ Database design & query optimization (PostgreSQL, MySQL, MongoDB) ✔ Legacy system modernization (Java 8 → Java 21 migrations) Highlights: Led backend development across 20+ microservices for Xcelerate, a live SaaS platform for restoration companies Migrated infrastructure from VMs to Azure App Services, implementing Azure Front Door for traffic routing and load balancing Built WS Glam, a full-stack e-commerce platform from scratch — frontend, backend, admin panel, payment integration, and role-based access control Integrated Stripe subscription billing for Remojo and overhauled its backend architecture for scale Built a custom AML (Anti-Money Laundering) system from scratch, including case management tools and fraud detection workflows I think in terms of failure modes before I write code — what happens when a webhook fires twice, when an API rate-limits mid-sync, when a migration needs to run without downtime. I communicate proactively and hand off production-ready code with documentation to match. Let's talk about what you're building — I'll give you a straight technical assessment and a clear path forward.

I am a Java developer with more than 9 years of experience, dedicated to delivering high-quality work on time. My goal is to bring your ideas to life and ensure the success of your project. I am a quick learner, adept at picking up new technologies, methods, and approaches. My strengths include a deep understanding of Java Core and solid OOP principles. Key technologies I work with include J2EE, J2SE, JPA (Hibernate), Liquibase, EJB, Vaadin, JSF, REST, SOAP, JAX-WS, Security, and Angular. I am always eager to learn and adopt new technologies relevant to your projects. Databases: MySQL, Oracle, MongoDB, Cassandra, SQL Server, PostgreSQL Caching: Redis, Spring Cachable IDE: Primarily IntelliJ IDEA, Experience in Eclipse / MyEclipse Frameworks: Spring, Play, Akka, Scala, Vaadin, JSF, JSP, Servlet Build Tools: Maven, Gradle, Sbt, Ant, Jenkins, Bamboo Frontend: Angular

Are you looking for a skilled software engineer to help you with your programming needs? Look no further! My name is Bilal, and I have a strong background in software development and a passion for coding that started at a young age. I graduated from the prestigious National University of Computer and Emerging Sciences in Lahore, where I honed my skills and gained hands-on experience working on various projects. With over 30 successful projects completed on online platforms, I have established a stellar reputation with a rating of 4.9/5.0. I specialize in a wide range of programming languages, including C/C++, Java, Python, Assembly, JavaScript, C#, HTML, CSS, and many others. Whether you need help with homework, assignments, projects, or industrial tasks, I've got you covered. My expertise extends to various subjects such as programming fundamentals, assembly language, data structures, operating systems, databases, object-oriented programming, algorithms, and more. I stay up to date with the latest technologies and frameworks, including Node.js, Flask, MongoDB, SQL, React Native, Matlab, and many others. Rest assured, I can work seamlessly on both Windows and Linux operating systems. To deliver top-notch results, I utilize industry-standard tools such as Microsoft Visual Studio, Visual Studio Code, NetBeans, Eclipse, Jupyter Notebook, and more. I am well-versed in developing robust applications, REST APIs, and user-friendly GUIs to meet your specific requirements. Beyond my professional experience, I also served as a Teaching Assistant at the National University of Computer and Emerging Sciences, where I mentored and guided aspiring software engineers. This experience has further strengthened my ability to communicate complex concepts and provide excellent client support. I am currently based in Vilnius, Lithuania, but have a proven track record of working remotely with clients worldwide, including the United States. I am highly adaptable and thrive in collaborative environments, making me an ideal candidate to join your team or collaborate on your project. If you're seeking a dedicated and skilled software engineer who can deliver high-quality solutions within deadlines, don't hesitate to reach out. Feel free to drop me a message, and let's discuss how I can help bring your ideas to life. Thank you for considering me for your programming needs!

⭐️ Top Rated - Top 10% of talent on Upwork 🕒 500+ hours on Upwork ✅ 6+ years of experience ✅ 16+ projects delivered I have worked on various projects based on Microservice Architecture following an event-driven approach/architecture, implemented using different design patterns i.e. Singleton, Factory, CQRS, Event Sourcing, and Saga. I have 6+ years of working experience with Java and 3 with Spring Boot. Work on integrating QuickBooks, Stripe, Chase Orbital, Oracle NetSuite, and many more third-party integrations. As I worked heavily on integrating CRM, ERP, and POS systems with 3rd party APIs and enabling them to exchange data with each other using REST APIs and GraphQL ****************************** REASONS TO CHOOSE ME *********************************** ✅ Prioritize meeting deadlines with the highest regard. ✅ Work collaboratively, demonstrating exceptional communication skills. ✅ Advocate for strong Test Driven Development practices. ✅ Possess the ability to independently generate solutions without the need for highly detailed user stories. I can readily devise and model multiple solutions based on the presented problem, allowing for informed decision-making. ✅ Display enthusiasm for acquiring any necessary knowledge essential for project success. As a quick learner, I am committed to completing tasks promptly. ✅ Maintain intellectual honesty; I will only undertake tasks that align with my capabilities. * ************************** SOME TECHNOLOGIES I MASTER ******************************* ✅ Java 8-11 ✅ Spring Webflux ✅ Spring Cloud ✅ Spring Security ✅ GraphQL ✅ Docker ✅ AWS ✅ RabbitMQ ✅ Kafka ✅ Jenkins ✅ Maven ✅ Gradle *************************** TECHNICAL COMPETENCIES ******************************* • Java Tech-stack: Spring Boot, Hibernate, JPA, Spring Cloud, Quartz, • Language known: Java, VueJs, and Javascript • Database Hands-on: MySQL, PostgreSQL, MongoDB, Elasticsearch, AWS RDS, Cassandra • Messaging Frameworks: Apache Kafka, AWS ActiveMQ, AWS SNS & SQS • DevOps: AWS EC2, S3, GCP • Project management: Git, Aws CodeCommit, Bitbucket, Jira, Trello, Asana • BPMN Tools: Flowable *************************** PROFILE SUMMARY ******************************* • Hands-on experience on Spring Boot-based microservices, AWS Services e.g. Ec2, S3, SNS, SQN • Handled structured, semi-structured, and unstructured data • Experience in VueJs and Qusar for Frontend development • Strong Code Reviews in Spring Boot-based microservices, testing with Junit, Mockito • Domain: Digital Freight Forwarding System and Fintech Invite me and let's build the greatest software products together!! ------------------------------------------ The keywords to find me: Spring Boot Developer, Java Developer, Spring, JPA, Microservices. Fintech, Monolithic Full Stack. Backend Developer, API Integrations, 3rd party API Integration

Hello there! 🌟 🔥 As a seasoned Java spring boot developer with over 2 years of experience, I'm dedicated to transforming your ideas into captivating web experiences. My expertise lies in Spring Boot, along with state-of-the-art backend technologies such as Spring Cloud, spring data JPA and. I'm also proficient in converting UML diagrams into efficiently architectured, Microservices based applications. 💥 ✨ My successful project contributions include: 🔹 Proficient in Spring Security for ensuring top-notch security protocols in applications. 🔹 Skilled in crafting efficient APIs using Spring Boot and Spring Cloud for seamless, load-balanced services. 🔹 Well-versed in Apache Kafka, with a strong foundation in event-driven architecture. 🔹 Solid experience with MySQL databases, ensuring effective data management and retrieval. 🔹 Familiarity with Spring Data JPA to optimize database interactions. 🔹 Basic knowledge of JavaScript for enhancing user interfaces. Let's connect and discuss how I can bring your vision to life! 🌐