Hire the Best Core Java Developers
in India

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Niravdas K.

Ahmedabad, India

$25/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?

  • Core Java
  • Java
  • Spring Boot
  • Spring Security
  • Microservice
  • JUnit
  • Hibernate
  • Spring Framework
  • MySQL
  • SaaS Development
  • Apache Kafka
  • Enterprise Software Development
  • Software Development
  • Full-Stack Development
  • Web Development
  • Artificial Intelligence
  • Amazon Web Services
  • Back-End Development
  • API Development
  • Database Design
Anand K.

Etah, India

$30/hr
4.8
70 jobs

📈 Forex Trader | 💻 MQL4 Expert | 📊 TradingView Developer 👋 Hello! I'm Anand Kumar Verma, a highly skilled financial professional with a passion for trading and investment. With over 4 years of experience in the financial markets, I have cultivated expertise in Forex trading, MQL4/5 programming, and TradingView development. 💼 𝐌𝐘 𝐄𝐗𝐏𝐄𝐑𝐓𝐈𝐒𝐄: 🔹 Forex Trading: I specialize in the dynamic world of Forex trading, where I apply my in-depth knowledge and analytical skills to identify profitable opportunities and manage risk effectively. 🔹 MQL4/5 Expertise: As an MQL4/5 Expert, I excel in algorithmic trading. I design, develop, and optimize automated trading systems within the MetaTrader 4 environment, creating customized indicators, scripts, and Expert Advisors to enhance trading strategies. 🔹 TradingView Development: Leveraging my proficiency in Pine Script, I develop user-friendly charting tools on the TradingView platform. These tools include custom indicators, alerts, and strategies, empowering traders with real-time market insights. 💼 𝐌𝐘 𝐒𝐊𝐈𝐋𝐋𝐒𝐄𝐓: 🔹 Forex Trading Strategies 🔹 Algorithmic Trading 🔹 MQL4 Programming 🔹 MetaTrader 4 (MT4) 🔹 TradingView Platform 🔹 Pine Script 🔹 Technical Analysis 🔹 Risk Management 🔹 Financial Analysis 🌐 𝐈𝐍𝐃𝐔𝐒𝐓𝐑𝐈𝐄𝐒: 🔹 Forex Markets 🔹 Financial Trading 🔹 Algorithmic Trading 🔹 MetaTrader 4 (MT4) 🔹 TradingView Platform 🔹 Pine Script 🔹 Technical Analysis 🔹 Risk Management 🔹 Financial Analysis 🏆 𝐏𝐑𝐄𝐕𝐈𝐎𝐔𝐒 𝐂𝐋𝐈𝐄𝐍𝐓 𝐅𝐄𝐄𝐃𝐁𝐀𝐂𝐊: ⭐⭐⭐⭐⭐"Anand completed the work to our expectations." ⭐⭐⭐⭐⭐"Thank you for the help with this Anand." ⭐⭐⭐⭐⭐"needed a mt4 programmer for custom indicator" 🔑 𝐊𝐄𝐘𝐖𝐎𝐑𝐃𝐒: Forex Trading, MQL4 Programming, Algorithmic Trading, TradingView Development, MetaTrader 4 (MT4), Pine Script, Technical Analysis, Risk Management, Financial Analysis, Trading Strategies 🔗 𝐂𝐎𝐍𝐍𝐄𝐂𝐓 𝐖𝐈𝐓𝐇 𝐌𝐄: Let's collaborate to enhance your trading experience. Whether you're looking to optimize your trading strategies, develop custom indicators, or create intuitive TradingView tools, I'm here to help you achieve your financial goals. Let's Start Work together.

  • Core Java
  • Java
  • Node.js
  • ExpressJS
  • JavaScript
  • Web Development
  • Software Debugging
  • Certified Associate in Python Programming
  • MQL 4
  • C++
  • Scripts & Utilities
  • MetaTrader 4
  • MetaTrader 5
  • Java Collections Framework
  • MetaTrader
Harmeet K.

Sangrur, India

$40/hr
5.0
59 jobs

AI Engineer and Solutions Architect with 10+ years of experience building scalable SaaS platforms, enterprise systems, and cloud-native applications. Over the past two years, I have been helping businesses integrate Generative AI, Large Language Models (LLMs), AI Agents, Retrieval-Augmented Generation (RAG), and workflow automation into production systems. I specialize in OpenAI, Claude, GPT-4, LangChain, LlamaIndex, Vector Databases, AI Chatbots, AI Search Systems, and enterprise-grade backend architecture using Python, Java, Spring Boot, AWS, PostgreSQL, MongoDB, Docker, and Kubernetes. I help companies move beyond AI demos and build production-ready AI products that scale securely and reliably. Over the last 10+ years, I’ve architected and scaled SaaS platforms, enterprise systems, and cloud-native applications used by startups and growing businesses across healthcare, fintech, logistics, travel, AI, and real estate industries. I specialize in Java, Spring Boot, Microservices, AWS, PostgreSQL, MongoDB, Kubernetes, and scalable backend architecture for high-performance SaaS platforms. Worked on platforms handling real-time workflows, payment systems, enterprise reporting, AI integrations, booking engines, analytics systems, and multi-tenant SaaS infrastructure. I’ve developed enterprise-grade platforms for healthcare, fintech, e-commerce, and real-time applications, focusing on scalability, security, and long-term maintainability. My expertise includes: ✔ High-performance REST APIs ✔ Microservices architecture ✔ Cloud-native AWS deployments ✔ Authentication & payment systems ✔ Enterprise integrations ✔ Performance optimization Whether you need to modernize a legacy Java application, build a backend from scratch, or scale an existing SaaS platform, I can help architect and deliver reliable production-ready systems. My Core Competencies 1. Java Development: - Core Java: In-depth knowledge of Java’s features, collections, concurrency, and multi-threading - Spring Framework: Expertise in Spring Boot, Spring MVC, Spring Security - Microservices: Designing and implementing microservices architecture with Spring Cloud - API Development: RESTful APIs with JWT, OAuth, and GraphQL integration 2. Mobile App Development: - Android Development: Skilled in developing native Android apps using Java and Kotlin - App Lifecycle: From UI/UX design to API integration and deployment 3. Database & Back-End: - Database Expertise: Proficient in MySQL, PostgreSQL, and MongoDB for secure, scalable data management - ORM: Working with Hibernate for object-relational mapping - Server-Side Scripting: Building efficient backends with Java and Spring. 4. Deployment & Cloud: - Cloud Deployment: Expertise in deploying Java-based applications on AWS, Azure, and Google Cloud - Containerization: Proficient with Docker for application containerization and management 5. Security & Performance: - Application Security: Implementing secure systems with Spring Security, OAuth, and data encryption - Performance Tuning: Optimizing application speed, database queries, and server-side performance AI & Generative AI Expertise ✔ AI Chatbot Development ✔ OpenAI API Integration ✔ Claude AI Integration ✔ GPT-4 Applications ✔ AI Agents & Agentic Workflows ✔ Multi-Agent Systems ✔ Retrieval-Augmented Generation (RAG) ✔ AI Knowledge Bases ✔ Enterprise Search Systems ✔ Semantic Search ✔ Embedding Models ✔ Vector Databases ✔ Document AI ✔ AI Workflow Automation ✔ Conversational AI Platforms ✔ AI SaaS Products ✔ LLM Evaluation & Optimization ✔ Prompt Engineering ✔ AI API Development ✔ AI Automation for Business Processes Industries I Serve - E-Commerce: Custom checkout systems, payment gateway integration, and scalable shopping carts - Healthcare: HIPAA-compliant mobile apps and backend systems for patient management - Finance: Developing secure and efficient transaction systems, real-time data processing - Education: Learning platforms and mobile apps to enhance educational experiences - Travel & Hospitality: Building booking engines, itinerary planners, and travel apps - Real Estate: Custom property listings, user-friendly property search apps What I Can Help You Build - SaaS backends - REST APIs - Microservices architecture - Authentication systems - Payment integrations - Cloud deployment pipelines - Enterprise dashboards If you need a reliable backend engineer to build scalable APIs, SaaS platforms, or cloud-native Java applications, let’s discuss your project. Keywords: Spring Boot, Java Backend, SaaS Development, REST API, Microservices, AWS, Scalable Applications, SaaS Architecture, Platform Engineering, Distributed Systems, Event-Driven Architecture, Cloud-Native Development, Enterprise APIs, Multi-Tenant SaaS, AI Integrations, Kubernetes, Docker, Kafka, DevOps, System Design, Scalable Infrastructure, High Availability Systems, Fintech, Healthcare Platforms, Booking Engines, Real-Time Systems

  • Java
  • SaaS Development
  • AI Development
  • CRM Automation
  • Generative AI
  • OpenAI API
  • Spring Boot
  • REST API
  • Microservice
  • Software Architecture
  • Amazon Web Services
  • Full-Stack Development
  • PostgreSQL
  • Spring Security
  • MongoDB
  • Web Application Development
  • Angular
  • MySQL
  • Mobile App Development
  • Web Development
Pancham G.

Bathinda, India

$30/hr
4.9
129 jobs

I’m a Senior Java Backend Engineer with over 14 years of experience building mission-critical systems in fintech, with a strong focus on payments, lending platforms, and core banking solutions. I specialize in Java and Spring Boot, and design backend systems that are secure, scalable, and capable of handling high-volume financial transactions with consistency and reliability. I’ve worked on systems involving payment processing, transaction workflows, loan management, and integrations with external financial services and APIs. This includes designing and building robust microservices architectures that support real-time and asynchronous processing, ensuring data accuracy, fault tolerance, and seamless service communication. I understand the importance of idempotency, transaction integrity, and failure handling in financial systems where even minor inconsistencies can have significant impact. Security and compliance are central to my approach. I have strong experience implementing secure authentication and authorization using Spring Security, token-based systems, and role-based access control. I build APIs and backend services that align with financial industry expectations around data protection, auditability, and reliability. From a technical standpoint, I bring deep expertise in Spring Boot, microservices, REST API design, JPA/Hibernate, and relational databases like MySQL and PostgreSQL. I’m comfortable designing systems from scratch as well as improving and scaling existing platforms, optimizing performance, and ensuring stability under load. I also have hands-on experience with AWS and Google Cloud, and have worked on deploying and managing backend systems in cloud environments. I understand how to design cloud-ready architectures, implement CI/CD pipelines, and ensure systems are resilient, observable, and production-ready. What sets me apart is my ability to think beyond just implementation. In fintech systems, correctness, reliability, and long-term maintainability matter more than quick fixes. I focus on building clean, well-structured systems that not only meet current requirements but are also prepared for future scale, regulatory needs, and product evolution. If you’re building or scaling a payments platform, lending system, or core banking backend and need someone who understands both the technical and domain challenges, I’d be glad to contribute.

  • Java
  • J2EE
  • Spring Framework
  • Spring Boot
  • Spring Security
  • Hibernate
  • Java Persistence API
  • RESTful API
  • Microservice
  • FinTech
  • Payment Processing
  • AI Implementation
  • SQL Programming
  • Desktop Application
  • Swing
  • iText
  • Unit Testing
  • Cloud Computing
  • Amazon Web Services
  • Google Cloud Platform
Ronak S.

Ahmedabad, India

$28/hr
5.0
2 jobs

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.

  • Core Java
  • Java
  • Web Application
  • Web Development
  • Java Collections Framework
  • Spring Framework
  • Spring Boot
  • Spring MVC
  • Java Servlet API
  • Java Persistence API
  • Git
  • GitHub
  • Version Control
  • Agile Software Development
  • Jira
Rushabh A.

Pune, India

$25/hr
5.0
3 jobs

I'm a Full-Stack Java Developer with over 8+ years of industry experience. I excel in all aspects of Java application development, from design and development to deployment. I have a proven track record of building robust and Scalable applications across diverse domains. My Expertise Full-Stack Development: Java: Core Java, multithreading, OOP, Spring, Hibernate, Struts, J2EE. Frameworks & Libraries: Spring, Hibernate, JavaFX, Apache Struts. Microservices Architecture: Spring Cloud, Netflix OSS, service discovery, load balancing, tolerance mechanisms. Web Development: JSP, Servlets, RESTful APIs, Angular, React, HTML, CSS, JavaScript. Databases: MySQL, PostgreSQL, MongoDB, Redis. Testing & Debugging: JUnit, Mockito. I also use GitHub Copilot and Claude Code to deliver the best solutions. ✔ LLM integrations (OpenAI, Claude, etc.) ✔ AI-assisted workflow automation ✔ Prompt engineering & optimization ✔ RAG based enterprise search solutions ✔ AI code acceleration using tools like Cursor ✔ Designing AI-ready Microservices architecture Java Solution Architect: Designing scalable solutions with Java, Spring, Hibernate, and microservices. DevOps: Cloud setup, infrastructure management, CI/CD. Proficient in AWS (Lambda, EC2, S3, Redshift, SageMaker, Cognito) and GCP (VMs, Google cloud storage). Domain Experience: Insurance, finance, healthcare, e-learning, e-commerce, travel, real estate, logistics, supply chain, social networking, and education. CRM and ERP systems.

  • Java
  • Spring Boot
  • Spring Batch
  • Python
  • TypeScript
  • Microservice
  • MySQL
  • PostgreSQL
  • API
  • Google Analytics
  • ETL
  • Angular
  • Data Engineering
  • Angular 5
  • React

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