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Niravdas K.

Ahmedabad, India

$28/hr
4.9
18 jobs

✅ 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?

  • Spring Boot
  • Spring Security
  • Microservice
  • Java
  • Core Java
  • Hibernate
  • Spring Framework
  • Spring MVC
  • Spring Batch
  • RESTful API
  • Jakarta EE
  • MySQL
  • Apache Kafka
  • JUnit
  • Java Servlet API
  • JSTL
  • Thymeleaf
  • Amazon Web Services
  • Back-End Development
  • Web Development
Ankit J.

Bhilwara, India

$20/hr
4.9
49 jobs

🌟 Top Rated Plus 🌟 Oracle Java Certified 🌟100% Job Success Score 🌟 200K+ earned 🌟10,000+ hours of hands-on experience Hi, I’m Ankit Jain – a highly skilled software developer with expertise in building end-to-end solutions that drive business transformation. With over 10+ years of experience, I have worked across a diverse range of industries, delivering solutions in AI, cloud architecture, microservices, blockchain, mobile applications, and enterprise systems. I excel in turning complex requirements into robust, scalable applications that improve efficiency, reduce costs, and enhance user experience. 💻 Technical Expertise * Languages & Frameworks: Java, Spring Boot, Hibernate, Angular, React, Micronaut, REST APIs, GraphQL *Cloud & DevOps: AWS (Lambda, Fargate, API Gateway, S3, Cognito), Azure, Docker, Kubernetes, Jenkins, GitLab CI/CD *AI & Blockchain: OpenAI (GPT-3.5, GPT-4), Blockchain (Web3J, Smart Contracts, IPFS), Azure Open AI *Mobile & Web Development: React, Angular, Spring Boot *Database: PostgreSQL, MySQL, MariaDB *Messaging & Async Systems: Apache Kafka, SQS, SNS *Payment Gateway Integrations: Stripe, Razorpay, Braintree *Testing: JUnit, Mockito, TestRestTemplate, MockMVC *Tools: IntelliJ, Eclipse, Git, Maven, Tomcat, Atlassian Suite (Jira, Confluence, Bamboo) 🔧 Key Strengths *End-to-End Expertise: Proven experience in designing, developing, and deploying scalable microservices that power enterprise-grade solutions, from backend architecture to frontend interfaces and mobile applications. *AI & Blockchain Integration: I integrate cutting-edge AI technologies like OpenAI’s GPT-3.5 and GPT-4 into systems, as well as blockchain-based smart contracts to ensure secure, transparent transactions. *Cloud Solutions: Expertise in AWS and Azure cloud services to build, deploy, and scale applications. I leverage serverless technologies (AWS Lambda), containerization (Docker), and CI/CD pipelines to ensure efficient and cost-effective solutions. *Mobile & Web Development: I design and develop responsive, user-friendly web applications and mobile apps with React, Angular, and Spring Boot, ensuring seamless experiences across devices. *Performance & Security Focus: I place a strong emphasis on system performance, security, and clean code practices to ensure that all systems I build are highly optimized, secure, and maintainable. *Project Management & Collaboration: Experienced in working closely with cross-functional teams, conducting code reviews, ensuring adherence to best practices, and delivering high-quality products on time. *Client-Focused Approach: I prioritize understanding client requirements and translating them into practical, production-ready solutions with ongoing support and iterations as necessary. 🤝 Why Work With Me? ✔️ Proven Success: 10,000+ hours of hands-on experience across a diverse range of projects, ensuring high-quality delivery that exceeds expectations. ✔️ Top-Rated Plus: A trusted professional with a solid reputation for delivering cost-effective, high-quality solutions. ✔️ Versatile Solutions: Whether it’s building an AI-powered grant proposal system, a secure data marketplace, a healthcare management platform, or a mobile app, I offer end-to-end solutions tailored to your needs. ✔️ Deep Knowledge in Multiple Domains: From AI and blockchain to cloud infrastructure and enterprise software, I bring in-depth knowledge to every project. ✔️ Strong Communication & Commitment: I’m committed to clear communication, transparency, and meeting deadlines. I’m always available for regular updates, feedback, and collaboration. ✔️ Long-Term Partnerships: I build solutions that grow with your business, and I’m ready for both short-term tasks and long-term collaborations. If you're looking for a reliable, detail-oriented Java expert to build, scale, or maintain your application, let’s talk! 📩 Send me a message — I’d love to hear more about your project.

  • Hibernate
  • Node.js
  • MySQL
  • MongoDB
  • Spring Framework
  • React
  • Java
  • Spring Boot
  • RESTful Architecture
  • Micronaut
  • AWS Lambda
  • Microsoft Azure
  • RESTful API
  • OpenAI API
  • Angular 2
Sanjay Kumar G.

Kanpur, India

$4/hr
5.0
1 jobs

With 18+ years of experience, I specialize in building robust, scalable, and high-performance Java-Spring applications, as well as modernizing and optimizing existing systems. My expertise spans end-to-end development, architecture redesign, performance tuning and bug fixing. eCommerce Expert: 10+ years specializing in SAP Hybris/Commerce Cloud and IBM WCS Technical Depth: Hands-on experience with Spring Microservices, Cloud architectures (GCP), and modular application design I deliver reliable, high-quality solutions with a focus on stability, client satisfaction, and lasting professional relationships. Hands-on experience with the following tools and frameworks: Languages & Frameworks - Java 8/11/17/21 - JSP, Servlet - Spring MVC, Spring Boot, Spring REST, Spring Batch, Spring JPA, Spring Security) - XML/XSL - Struts 1.2 - EJB 2.0 / 2.1 / 3.0 - JSF JPA - Hibernate - MyBatis Frontend - React Js - Angular eCommerce Platforms - IBM WebSphere Commerce (WCS) - SAP Hybris Commerce Messaging & Streaming - Apache ActiveMQ - Apache Kafka - Apache RabbitMQ Application Servers - WebLogic - JBOSS - Apache Tomcat Databases - Oracle - DB2 - MySQL - MongoDB - Postgres - SQL Server Reporting - iReport - JasperReports Search - Apache Solr - ElasticSearch Cache - Redis - Memcached Payment Integration - CyberSource Scheduling - Quartz Scheduler Build, Logging - ANT - Gradle - Maven - Log4j Code Quality - SonarQube - PMD - CheckStyle - FindBugs/SpotBugs - JaCoCo - Cobertura DevOps Tool - Git/GitHub - CVS - SVN - IBM ClearCase - Jenkins - Docker Web Services - Apache Axis - SOAP - WSDL API testing and collaboration tool - Postman - Swagger Testing Framework - JUnit - Groovy - Mockito Feature and Bug Tracking - Trackit Record - JIRA - Rally IDEs & Development Tools - Eclipse - IntelliJ - IBM RAD - TOAD - SQL Developer - Cygwin - Putty - JMX Console Looking forward to collaborating! Thanks & Regards, Sanjay

  • Java
  • Spring Boot
  • Microservice
  • Apache Solr
  • Elasticsearch
  • SQL
  • Full-Stack Development
  • Spring Security
  • Spring Batch
  • Redis
  • SAP Hybris
  • Commerce Cloud
  • JasperReports
  • EJB
  • IBM WebSphere
Harshad C.

Ahmedabad, India

$30/hr
5.0
2 jobs

15+ Years in Software Development | Java, PHP, AWS, Azure, Dynamic 365 Business Central, Microsoft 365 I am an experienced and versatile software professional with 14+ years of hands-on expertise in developing, managing, and scaling Java and PHP-based web applications. With a strong technical foundation in Java, J2EE, JSP, Servlets, Spring MVC, Hibernate, and PHP, along with cloud proficiency in AWS and Azure, I bridge the gap between technology and business goals. Over the years I have successfully led cross-functional teams, managed end-to-end software delivery, and driven client success through effective communication, requirements understanding, and strategic planning. ✅ What I Do IT Project Management (Agile/Scrum/Waterfall) Business development & client relationship management Requirement gathering & solution consulting Technical scope planning & effort estimation Coordination with dev/QA/cloud/deployment teams Delivering scalable, cloud-ready enterprise solutions Post-launch support, optimisation & enhancements ✅ Why Clients Work With Me Strong technical + managerial blend: I understand code and business both Proven track record of handling complex enterprise-grade systems Excellent communication, reporting, and documentation On-time delivery with milestone clarity High accountability and ownership Ability to translate business needs into technical roadmap ✅ Tech Stack & Expertise Backend: Java, J2EE, JSP, Servlets, Spring MVC, Hibernate, PHP Cloud: AWS, Azure, GCS Databases: MySQL, PostgreSQL, Oracle PM Tools: JIRA, Trello, Asana, MS Project, Slack Methodologies: Agile/Scrum/Kanban If you are looking for someone who can understand your technical requirements, manage end-to-end delivery, and also assist in business development and long-term strategic growth — I’d be happy to collaborate. 📩 Let’s discuss your project or business idea!

  • Ecommerce
  • Ecommerce Website
  • International Development
  • Product Development
  • Web Application
  • Web Development
Shashank R.

Varanasi, India

$15/hr
5.0
1 jobs

Hi, I’m a Senior Full Stack Developer with 10+ years of professional experience, helping startups and enterprises build reliable, scalable, and maintainable web applications. I have strong experience across backend development (Java & PHP) and frontend technologies, and I’m comfortable working on both custom application development and CMS-based solutions like WordPress. I’ve worked with enterprise organizations such as IBM as well as multiple startups, following industry-standard coding practices, clean architecture, and professional delivery processes. Currently, I work as an independent freelancer/consultant, supporting clients across different stages of product development. My approach is simple: understand the business requirement clearly, choose the right technology, and deliver a stable solution. What I Can Help You With ✅ Full Stack Web Application Development ✅ Backend Development (Java / PHP) ✅ REST API Design & Integration ✅ Enterprise & Startup Applications ✅ WordPress & CMS-based Websites ✅ Performance Optimization & Bug Fixing ✅ Long-term Maintenance & Support Technology Stack & Expertise ✔ Java – Spring Framework / Spring Boot / Java EE ✔ Hibernate / JPA ✔ PHP – Core PHP, CodeIgniter, Laravel ✔ WordPress (Custom Themes & Plugins) ✔ JavaScript, jQuery, AJAX ✔ HTML5, CSS3, Bootstrap ✔ SQL – MySQL, PostgreSQL, Oracle ✔ NoSQL – MongoDB, Firebase ✔ Git / GitHub / SVN ✔ Build & Tools – Maven, Eclipse ✔ Project Management – Jira Regards, Shashank Rajput Senior Full Stack Developer

  • Hibernate
  • Node.js
  • React
  • PHP
  • MongoDB
  • Java
  • Spring Framework
  • Angular 2
  • Oracle Accounting
  • Android SDK
Pa K.

Surat, India

$3/hr
4.8
169 jobs

🚀 Expert Web & Mobile Developer | PHP | Java | E-commerce | Cloud | Certified Scrum Master With over 15 years of experience, I am a highly skilled web and mobile application developer specializing in PHP, Java, JavaScript, Python, and cloud technologies. I am passionate about delivering high-quality, scalable, and innovative digital solutions that drive business growth. I have successfully built and deployed hundreds of projects for businesses across industries, including e-commerce, finance, healthcare, real estate, and SaaS. My expertise covers full-stack development, mobile app development, API integrations, cloud solutions, and agile project management. I am a Certified Scrum Master (CSM) with a strong understanding of Agile, SDLC, and DevOps methodologies, ensuring that projects are completed on time, within budget, and with the highest quality standards. 🔹 Key Technical Expertise ✅ Web Development: ✔ Full-Stack Expertise – PHP, Java, JavaScript, Python ✔ Frontend – HTML5, CSS3, JavaScript, jQuery, AJAX, Angular ✔ Backend – Laravel, CodeIgniter, CakePHP, Spring, Django, Flask, FastAPI ✔ CMS Development – WordPress, Joomla, Drupal ✔ API Development – RESTful APIs, GraphQL, SOAP, WebSockets ✔ Payment Gateway Integration – PayPal, Stripe, Razorpay, Authorize.Net ✅ E-commerce Development: ✔ BigCommerce, Shopify, WooCommerce, Magento, OpenCart ✔ Custom Plugin Development & Store Optimization ✔ Shopping Cart & Checkout Customization ✔ Marketplace Integration – Amazon, eBay, Walmart ✔ Subscription & Membership-Based Store Development ✅ Mobile Application Development: ✔ Android & iOS Native App Development ✔ Cross-Platform Apps – React Native, Flutter, Ionic ✔ Backend for Mobile Apps – Firebase, Node.js, PHP, Python, Java ✔ Payment Gateway & Third-Party API Integration ✅ Database Management: ✔ SQL Databases – MySQL, PostgreSQL, MS SQL, Oracle, DB2, MS Access ✔ NoSQL – MongoDB, Firebase Firestore, Cassandra ✔ Data Warehousing & Reporting – Power BI, Azure Data Lake ✅ Cloud & DevOps: ✔ Cloud Services – Azure SQL, Azure Blob Storage, AWS S3, Google Cloud ✔ CI/CD – Jenkins, GitHub Actions, Bitbucket Pipelines ✔ Server Management – Linux, Apache, Nginx, cPanel, WHM ✔ Docker & Kubernetes for Scalable Deployments ✅ Agile & Project Management: ✔ Certified Scrum Master (CSM) – Expert in Agile & Scrum methodologies ✔ Strong knowledge of SDLC, DevOps, and CI/CD workflows ✔ Project Planning, Sprints, & Team Collaboration 📌 Why Choose Me? 🔹 15+ years of hands-on experience in web and mobile development. 🔹 Expert in full-stack development, e-commerce, and cloud computing. 🔹 Proven track record in delivering high-quality projects on time and within budget. 🔹 Strong communication skills in English, Hindi, and Gujarati. 🔹 A results-driven approach with a keen eye for detail, security, and performance. 🔹 Client Satisfaction is My Priority – I focus on building long-term relationships by delivering excellent work and maintaining transparent communication. 📞 Let’s Work Together! If you’re looking for a reliable, experienced, and highly skilled developer, I’m here to help! Whether you need a custom website, a mobile app, an e-commerce store, API integrations, cloud solutions, or agile project management, I have the expertise to bring your vision to life. 💬 Send me a message, and let’s discuss your project today! 🚀

  • PHP
  • jQuery
  • JSON API
  • Web Application
  • PHP Script
  • Core Java
  • Database Design
  • MySQL
  • Java
  • Laravel
  • CodeIgniter
  • ChatGPT
  • ChatGPT API
  • Chatbot Prompt
  • Chatbot Script

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