I'm a highly skilled Java Developer with over 5 years of experience crafting robust backend solutions. My expertise lies in building enterprise applications and interactive software products. I leverage a powerful tech stack including Spring Boot, Hibernate, CI/CD pipelines, Kafka for streaming data, and deep knowledge of AWS cloud services for scalability and performance. Additionally, I possess strong proficiency in relational databases (MySQL, PostgreSQL) and front-end technologies (React.js, JavaScript, HTML) to deliver a well-rounded development experience.

Senior Java Backend Developer with 10+ years building production systems using Spring Boot, REST APIs, and enterprise databases. CORE EXPERTISE: - Spring Boot, Spring MVC, Spring Data JPA, Spring Security - RESTful API design and development - Database design: MySQL, Oracle - Enterprise system integration - Production support and troubleshooting WHAT I DELIVER: - Spring Boot Enterprise applications and RESTful APIs - Database design and optimization (PostgreSQL, MySQL, Oracle) - System integrations and workflow engines - Application support and troubleshooting RECENT HIGHLIGHTS: - Built configurable workflow engine processing thousands of events - Designed multi-system integrations with comprehensive error handling - Kotlin + Spring Boot experience TECHNICAL SKILLS: Java, Spring Boot, Spring Framework, Kotlin, REST APIs, PostgreSQL, MySQL, AWS, Docker, Git, Agile/Scrum MICROSERVICES KNOWLEDGE: - Strong understanding of microservices architecture patterns through coursework and demo projects. Seeking opportunities to apply this knowledge in production environments and build distributed systems expertise under experienced architects. I have a 5.0 Upwork rating and clients describe me as "professional, responsive, and genuinely committed to delivering high-quality work." Available for long-term contracts (30+ hours/week).

I am TOP RATED, a strong Java and PHP developer from the United States. In the past, I worked for the biggest companies such as Oracle, Accenture, First Data, Barclays Bank, etc. I have 20+ years of experience in web development and I highly specialize in - Java (Java EE, Spring, Spring Boot, Spring Annotations, Spring MVC, Spring Security, JMS, Java Struts, Java Servlets, JSP, Hibernate, MyBatis, REST, ActiveMQ). - PHP (Laravel, WordPress) - Javascript (React, Angular, JQuery, Vue.js) - HTML, CSS, Bootstrap, Tailwind CSS - MySQL, Postgres, Oracle, NOSQL, MongoDB. - AWS, WildFly, Apache Tomcat I have built more than 200 systems and I am comfortable working with both existing and new projects. I helped hundreds of clients in their business and I am here to help you as well!

I am a Senior Fullstack Developer with over 15 years of hands-on experience in building and scaling Java , C# / Net , Angular applications for startups, enterprises, and SaaS platforms. Currently, I’m working as the Chief Technology Officer at InventorSoft, a software development agency specializing in web and mobile solutions. I bring a strategic mix of technical depth, team leadership, and product vision to every project. Why hire me🧐: 📌 Expert in Scalable Java and .Net Architectures - Over 15 years of experience in developing Java, .Net, C#, Angular scalable applications from different domains. - Backend systems built with Spring Boot (15+ years) – Delivered scalable microservices and high-performance business logic for enterprise-grade applications. - ORM & data access with Hibernate – Applied advanced ORM techniques for efficient database interactions, query optimization, and data integrity in distributed systems. - Frontend development with Angular & Thymeleaf Designed and delivered 200+ robust backend systems for SaaS products, e-commerce platforms, and enterprise clients. 📌 Cloud-Native Platform Engineering Specializes in building secure, scalable, cloud-native platforms using leading cloud providers: - 8+ years of production experience with AWS – Deployed scalable, secure, and high-availability applications. - 9+ years of hands-on Azure expertise – Delivered enterprise-grade solutions with Azure App Services, Azure DevOps, and SQL/Azure Storage. - 5+ years of experience on Google Cloud Platform (GCP) – Built and deployed containerized microservices using GKE, Cloud Run, and Firebase. 📌 API-First & Cloud-Native System Design - Strong background in API integration and microservice architecture. - Created high-performance APIs for platforms serving 50K+ users, ensuring seamless third-party integration and scalability. - Experienced in Docker & Kubernetes, enabling CI/CD pipelines and resilient containerized systems. 📌 Full-Stack Leadership & Agile Team Management - Led and mentored teams of 5–25 developers through all stages of the SDLC—requirements gathering to deployment and maintenance. - Specialized in building cross-functional teams for backend-heavy systems, modern UIs (React, Angular, Thymeleaf), and DevOps automation. My latest achievement as a Software Architect: 🤝 Partnered with 45+ SaaS companies to design and deliver secure, scalable platforms using Spring Boot, AWS, and modern cloud services. 🚀 Helped 10 tech startups scale from MVP to production—selecting the right tech stack, defining cloud-native architecture, and assembling strong dev teams. 💼 Enabled 5 client acquisitions through the development of enterprise-grade software that attracted major buyers and investors. 🏭 Led a digital transformation project for a multi-billion-dollar oil company, delivering a secure, API-first platform that automated mission-critical operations. 🧩 Technologies I Specialize In - Languages/Frameworks: Java, C#, .Net, Spring Boot, Hibernate, Thymeleaf, .Net Core - Cloud Platforms: AWS (8+ years), Azure (9+ years), Google Cloud (5+ years) - DevOps Tools: Docker (7+ years), Kubernetes (5+ years) - Integration & Architecture: RESTful API integration, microservices, clean architecture, CI/CD pipelines Clients that I am proud of: 💻 Shoeby – A fashion retail platform focused on modernizing the e-commerce experience with intuitive UI, product personalization, and seamless shopping journeys. 💻 CellRebel – Provides advanced mobile network analytics, helping telecom companies improve coverage and performance based on real user data. 💻 Blade – A technology-powered aviation company offering urban air mobility services, including helicopter and seaplane flights. 💻 Matics – A real-time operational intelligence system for manufacturers, offering production insights and process optimization across the factory. 💻 MedischeScholing – A medical e-learning platform that enables healthcare professionals to access, register for, and track accredited training and certifications. ➡️ Learn more about other projects on the InventorSoft portfolio Keywords: Java, Backend, Developer, Fullstack, Web, Cross-Platform, Mobile, Application, AI, OpenAI, Service, App, Development, Engineer, Integration, Build, Website, Expert, Spring boot, MySQL, Development Team, Integrated, SaaS Platform, remote, Full-stack, Senior, Software, Client Management, GraphQL, API, .NET, Asp.net, Programmer, Technical Lead, Dashboard, MVC, Developers, ASP.NET, AspNetZero, core, software, MAUI, C#, Angular, .Net, Core, Principal, Performance, Scalability, Microsoft, Blazor, SQL, Server, Frontend, React, Ruby on Rails, RoR/React, front-end, Tailwind, feature, JavaScript, ROR, TailwindCSS, Technical Staff

Are you seeking a proficient developer with 4 years of experience in AI/ML, Python, Java, and C++? I am proficient in: ✅Developing AI/ML Algorithms ✅ Fine-Tuning LLMs (ML, DL models) ✅Building Rag Applications ✅Python Scripting & Automation ✅Desktop Application Development ✅C++ Programming ✅Algorithm Development and Optimization I specialize in Developing Advanced RAG applications, writing optimized ML algorithms. I finetune large language models on your own dataset. Transformer, BERT, GPT, whatever architecture you want, I'll handle it. I do full fine-tuning, LoRA, and QLoRA depending on what fits your hardware and the model size. You don't have to worry about the technical side I set up everything, run the training, and give you the final model ready to use. What I Do ✅ Clean, fix, and prepare your dataset ✅ Format everything the right way (COCO-style if needed, or whatever your model expects) ✅ Run fine-tuning with proper configs ✅ Give you evaluation results so you actually know the model improved Deliver the final model + instructions so you can run it yourself What You Get ✅Fully fine-tuned model ✅Training logs ✅Evaluation metrics ✅Dataset formatting (if you don't have one, I'll build it) ✅Support until everything works on your side Models I Can Fine-Tune ✅LLaMA ✅Mistral ✅Qwen ✅GPT-style models ✅Classification models (BERT, RoBERTa, DeBERTa, etc.) ✅Vision-Language models Anything that can be fine-tuned, I can handle it Who This Is For ✅Startups ✅Researchers ✅Solo developers ✅Anyone who needs a model trained on their own data Extra If you don't have training data, I can help you create, clean, or structure it so it My other expertise lies in developing automation using Python and creating Python scripts to perform different tasks, and also in desktop application development using Java, leveraging my skills to create efficient and user-friendly software solutions. Throughout my career, I've focused on developing desktop applications that meet client needs and exceed expectations. With a strong foundation in Java, Python, and C++ for various programming tasks My approach emphasizes clean, scalable code and a commitment to delivering projects on time and within budget. Whether it's enhancing existing applications or developing new software solutions, I am committed to providing high-quality results that align with your business objectives. If you don't like my work, you don't have to pay a penny! i believe in delivering quality work rather than charging my clients for nothing Let's discuss how I can contribute to your projects and help you achieve success through innovative software solutions. I look forward to collaborating with you!

Hello, I am an experienced Full-Stack Developer with over 12 years in the software industry. Throughout my career, I have contributed to projects across a diverse range of industries, including E-commerce, Wellness & Fitness, EdTech, Social Media, Hospitality, Retail, Fintech, Media & Entertainment, and Refineries, among others. Here’s a brief overview of my expertise: 🔹 Backend Development: Java, Spring Boot, JPA, Spring Security, Batch Processing, REST APIs, Microservices Architecture. 🔹 Frontend Development: HTML5, CSS3, JavaScript, Angular, React.js. 🔹 Databases: PostgreSQL, MySQL, Derby, MongoDB, DynamoDB. 🔹 AWS & Cloud Services: EC2, VPC, RDS, S3, Elastic Beanstalk, Cognito, SES, CloudFormation, ECS, ELB. 🔹 Virtualization & DevOps: Docker, Docker Compose, CI/CD Pipelines, Jenkins, CircleCI, CodePipeline, Codemagic. 🔹 AI/ML & Intelligent Systems: - Generative AI Integration - OpenAI APIs / LLM Integration - AI Chatbot Development - Machine Learning Model Integration - Prompt Engineering - AI-powered Automation Solutions - NLP (Natural Language Processing) - Python for AI/ML Workflows 🔹 Development Practices: Agile Methodologies, System Design, Scalable Architecture, Performance Optimization, Secure Application Development. 📱 Full Stack Developer 🌐 Backend Developer 💻 Frontend Developer ✅ On Time Delivery ✅ Quick Response ✅ Always Online ✅ Quality Work ✅ Client Satisfaction I have had the privilege of working on a variety of solutions and am comfortable handling both existing and new projects. I have had the opportunity to assist numerous clients in achieving their business goals, and I would be delighted to support you in the same way. Thank you for taking the time to visit my profile. Feel free to reach out—whether you’d like to discuss a project, share ideas, or simply connect. I would be delighted to collaborate and explore how I can support your initiatives. Feel free to 𝗗𝗠 𝗺𝗲 𝗼𝗿 𝗶𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 to your project on Upwork.

𝐖𝐡𝐲 𝐋𝐞𝐚𝐝𝐢𝐧𝐠 𝐂𝐨𝐦𝐩𝐚𝐧𝐢𝐞𝐬 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞 𝐟𝐨𝐫 𝐓𝐡𝐞𝐢𝐫 𝟏 𝟎𝟎𝟎,𝟎𝟎𝟎 $ 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 With 12+ years mastering backend systems, cloud architecture, and API integrations, I've helped companies like Macy's, Canadian Tire, and HPE transform their technical vision into reality. Now it's your turn. Let’s kick things off with something valuable: 💥𝐅𝐑𝐄𝐄 𝐏𝐫𝐨𝐭𝐨𝐭𝐲𝐩𝐢𝐧𝐠 𝐏𝐚𝐜𝐤𝐚𝐠𝐞💥. I’ll create your first prototype 𝐚𝐭 𝐧𝐨 𝐜𝐨𝐬𝐭 to get your idea moving. Just text me! ⚙️ 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 𝐈 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 𝐝𝐚𝐢𝐥𝐲: - 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: TypeScript, JavaScript, Node.js, Java, React, NextJS, NestJS, Spring Boot, Angular.js, Vue.js - 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: PostgreSQL, MySQL, MongoDB, Redis, Elasticsearch - 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬: AWS (EKS, S3, RDS, Lambda, SQS), Docker, Kubernetes, Terraform, GitLab CI/CD, Linux - 𝐀𝐏𝐈 & 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬: REST, SOAP, GraphQL, OpenAPI/Swagger, Stripe, Airwallex, Routfusion, Fortress, Express, Firebase, Webhooks, JSON - 𝐒𝐭𝐲𝐥𝐞 & 𝐃𝐞𝐬𝐢𝐠𝐧: HTML5, CSS3, Bootstrap, SASS, LESS, NPM, Gulp, AJAX, Webpack - 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 & 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐏𝐫𝐚𝐜𝐭𝐢𝐜𝐞𝐬: Unit Testing (Jest, JUnit), Agile/Scrum, Git, GitFlow, Responsive Design, Mobile-First 📣 What Clients Say About Me and my team: ⭐⭐⭐⭐⭐ "Sednor Holdings Limited delivered high-quality development work on our AWS-hosted web application. Their technical expertise in both Java and React scaled the project from scratch. We’ve invested over $500,000, and I’d gladly work with them again." – 𝐂𝐡𝐞𝐭𝐭 𝐑𝐮𝐛𝐞𝐧𝐬𝐭𝐞𝐢𝐧, VP Principal Architect at Hewlett Packard Don't wait - your success story starts now. Click here and let's get started.🚀

I'm an expert Java and Grails Developer with 6+ years of experience in building enterprise-grade web applications for both start-ups and Fortune 500 companies. I've developed around 50 + web application from ground up. - I am well versed in developing Front end, backend, API's and web services. - I am fluent in English and have excellent written and spoken communication skills. - I simply follow AGILE and SCRUM as an App Development Strategy. My skills: - Technologies: Java, Grails - Frameworks: Spring Framework, JPA, Apache Struts2, REST Services. - Database Access: JDBC, Hibernate, Spring(JDBC Template, Hibernate Template, Jpa Template), Spring Data. - Databases: MySQL, SQL Server, MongoDB, PostGres, Oracle - Web Application Server - Tomcat Apache, Nginx, AWS and Weblogic Server - Unit Testing Tools: JUnit, TestNG, Mockito - Reporting Tools: JasperReport, iText - Version Control Systems: SVN, BitBucket, GitLab, GitHub, VSS - Project management & Building tool: Maven, Ant

Java sits at the center of the platforms I build. Spring Boot runs the backend services and APIs, handling business logic, data access, and the core behavior of the system. Many of these platforms pair a Spring Boot backend with Angular on the frontend, forming structured web applications such as internal dashboards, operational platforms, and SaaS systems used by teams every day. Angular provides the application interface while the Java backend manages services, data, and integrations behind the scenes. Python also comes into play when automation or data workflows are needed. Small services and scripts written in Python handle background tasks, integrations, and operational processes that support the main platform. Java and Spring Boot handle the backend services, Angular runs the platform interface, and Python supports automation and background tasks.

Senior Java Software Architect with 15+ years of experience designing, developing, and delivering high-quality enterprise software solutions. Proven expertise building complex systems from scratch, modernizing legacy applications, and untangling long-standing technical issues in mission-critical Java environments. Recognized for reliability, technical depth, and consistent delivery of clean, maintainable, and scalable software. Core Technical Expertise Java & Enterprise Development: Spring Boot, Spring Batch, J2EE, EJB 2.0/2.1, JMS, Java Swing, JSF (PrimeFaces, RichFaces), JBOSS Frontend & App Development: Angular, AngularJS, React, TypeScript, PowerApps Portal & CMS: Liferay 6.2 / 7.0 Backend & Web Technologies: PHP, REST APIs, Microservices Cloud & DevOps: Kubernetes, AWS, CI/CD, containerized architectures Architecture & Design: Distributed systems, performance optimization, legacy modernization, system integration Professional Strengths Architected and implemented full-stack applications from the ground up using best-practice design patterns and modern development standards. Expert at analyzing, stabilizing, and refactoring complex or poorly structured Java applications — often resolving issues that remained unsolved for years. Strong communication and leadership skills, delivering clear solutions and prompt, high-quality results. Highly reliable, self-motivated, and committed to producing accurate and maintainable software aligned with business goals.