โ 8+ Years of Java Development Experience
โก Full-Cycle Backend Development & Architecture
โก AI-Powered Development for Faster Delivery & Better Code Quality
๐ 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.
๐ WHAT YOU GET:
โ๏ธ Java Backend Development & Software Architecture
โ๏ธ Spring Boot Applications & Microservices
โ๏ธ REST APIs, GraphQL APIs & Integrations
โ๏ธ Cloud-Native Applications using AWS
โ๏ธ AI-Assisted Development & Automation
โ๏ธ Legacy System Modernization
โ๏ธ Long-Term Support, Maintenance & Optimization
๐ KEY ACHIEVEMENTS:
โ๏ธ 8+ years building Java, Spring Boot, and enterprise backend applications
โ๏ธ Built scalable SaaS platforms, fintech applications, AdTech systems, and enterprise software
โ๏ธ Maintained and enhanced 15+ production microservices
โ๏ธ Contributed to Adstrome, TrustArc, Acquia DAM, and Digi-Docket
โ๏ธ Designed secure APIs, event-driven systems, and scalable architectures
โ๏ธ Improved application performance through optimization and modernization
โ๏ธ CORE EXPERTISE:
โ๏ธ Java, Core Java, Java EE, Spring Boot, Spring MVC, Spring Security
โ๏ธ Hibernate, JPA, JDBC, MyBatis, ORM Frameworks, REST APIs, GraphQL APIs
โ๏ธ Microservices Architecture, Apache Kafka, Event-Driven Systems
โ๏ธ PostgreSQL, MySQL, Snowflake, Query Optimization
โ๏ธ AWS, Docker, Kubernetes, Jenkins, Maven, Gradle, Git, GitHub, Bitbucket, Version Control Systems
โ๏ธ Authentication, Authorization, RBAC, Multi-Tenant SaaS
โ๏ธ ZK Framework & Enterprise Web Application Development
๐ DEVELOPMENT & MAINTENANCE:
โ๏ธ Web Application Development & Enterprise Software Development
โ๏ธ Spring MVC & ZK Framework Application Development
โ๏ธ Legacy Application Maintenance, Modernization & Application Upgrades
โ๏ธ Feature Development & Application Enhancements
โ๏ธ Bug Fixing, Root Cause Analysis & Production Support
โ๏ธ Performance Bottleneck Analysis & Optimization
โ๏ธ Memory Leak Detection & Resolution
โ๏ธ Security Vulnerability & CVE Remediation
โ๏ธ Third-Party API Integration & Business Workflow Automation
โ๏ธ Performance Optimization & Scalability Improvements
โ๏ธ CLOUD & DEVOPS:
โ๏ธ AWS Cloud Services, Docker Containerization & Containerized Application Deployment
โ๏ธ Kubernetes Container Orchestration for Scalable Cloud Infrastructure
โ๏ธ Linux-Based Server Systems, Linux Server Administration & Linux Server Troubleshooting
โ๏ธ Apache Tomcat Installation, Deployment, Monitoring & Performance Tuning
โ๏ธ CI/CD Pipelines, Jenkins Automation, Git, GitHub, Bitbucket & Version Control Systems
โ๏ธ Web Application Troubleshooting, Production Environment Support & Incident Resolution
๐งช TESTING & QUALITY:
โ๏ธ JUnit, Mockito, Unit Testing & Integration Testing
โ๏ธ Test-Driven Development & Automated Testing
โ๏ธ API Testing, Debugging & Log Analysis
โ๏ธ Root Cause Investigation & Production Stability
โ๏ธ Code Quality Improvements & Maintainable Software Development
โ๏ธ Regression Testing & Application Reliability Improvements
๐ค AI-ENHANCED ENGINEERING:
โ๏ธ AI-Assisted Development & AI-Powered Coding Workflows
โ๏ธ OpenAI API Integration, LLM Workflows & AI Automation
โ๏ธ AI-Assisted Testing, Refactoring & Documentation
โ๏ธ Faster Delivery Through AI-Enhanced Engineering
๐ข INDUSTRY EXPERIENCE:
โ๏ธ SaaS Platforms & Enterprise Applications
โ๏ธ AdTech & Programmatic Advertising
โ๏ธ Fintech & Loan Processing
โ๏ธ Privacy & Compliance Systems
โ๏ธ Digital Asset Management
โ๏ธ Multi-Tenant & White-Label Solutions
๐ WHY CLIENTS CHOOSE ME:
โ๏ธ 8+ Years of Java Development Experience
โ๏ธ Enterprise SaaS & Microservices Expertise
โ๏ธ Strong Spring Boot & Cloud-Native Skills
โ๏ธ 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
Rajib G.
Kolkata, India
$10/hr
5.0
6 jobs
I bring over 10+ years of expertise in Java, Spring Boot and Cloud technologies. I have consistently delivered robust, scalable, and maintainable software solutions.
My passion lies in tackling complex challenges head-on and transforming them into elegant, efficient optimize code. Whether you are looking to build a new application from the ground up, optimize an existing system or solve a specific problem, I bring a wealth of experience and a results driven perspective to ensure your project's success.
Let's use Java to make your vision a reality, together.
Key Technologies:
โ Java 8 to 21
โ Spring MVC, Spring Boot, Spring Cloud Microservices, Spring Security (JWT, OAuth 2.0)
โ Hibernate, JPA, JDBC
โ Restful API, GraphQL
โ Desktop application: JavaFx
โ Spring Batch, Scheduler
โ Frontend: JSP, Thymeleaf
โ Relational DB: MySQL, PostgreSQL, Oracle
โ NoSQL DB: MongoDB, Elasticsearch
โ DB Migration: Liquibase
โ Asynchronous Messaging: Apache Kafka, RabbitMQ
โ Build Tool: Apache Maven, Gradle
โ Version Controller: Git, GitHub
โ Testing with Junit, Mockito
โ API Documentation: Swagger UI
โ Architecture: Monolithic, Microservice
โ CI/CD Pipeline: Jenkins
โ Containerization: Docker
โ Orchestration: Kubernetes
โ Cloud: AWS, GCP
โ Monitoring Tools: Log4j, Slf4j, Datadog
โ Code Quality Tools: SonarQube, Black Duck, Harbor, SecHub Scan
โ Performance Testing Tool: JMeter
โ Server: Apache Tomcat
โ Realtime Scheduler: Quartz
โ API Integration (Office365, Twilio)
โ Libraries: Apache POI
โ Agile Methodologies: Jira, Confluence, Scrum, Sprint Planning, Standup, Retrospectives
โ Business & Technical Analysis: Requirements Gathering, Risk Analysis, Technical Design, Application Modeling, Implementation Planning and Support
Favorite Topics:
โญ Problem Solving Ability.
โญ Provide Efficient Optimized Solutions.
โญ Maintaining Good Quality Code.
โญ Accepted Challenges That Allows Me to Learn New Skills.
โญ Test Driven Development.
โญ Always Prioritize Security Aspects.
โญ Build automation.
Domain Expertise:
โ Manufacturing
โ E-Commerce
โ Education Services
โ Applicant Tracking System (ATS)
โ Customer Relationship Management (CRM)
Letโs Connect ! ๐
If youโre looking for a dedicated backend Java developer who can deliver results, Iโd love to discuss your project further. Feel free to reach out, and letโs create something amazing together!
Thank You
Java
Spring Boot
REST API
Spring Framework
Spring MVC
Microservice
JavaFX
Spring Data MongoDB
Spring Security
DevOps
Spring Cloud
Java GUI
Hibernate
Apache Kafka
Web Development
Varun B.
Amritsar, India
$20/hr
5.0
1 jobs
Hi, Iโm a Senior Full Stack Developer with 8+ years of experience building scalable, secure, and high-performance web applications. I specialize in Java, Spring Boot, React, Angular, AWS, and modern cloud-native architectures, helping businesses transform ideas into reliable, production-ready software.
Over the years, Iโve delivered enterprise applications across healthcare, finance, and business automation domains. My expertise spans backend development, modern frontend frameworks, cloud deployment, API integrations, and system architecture.
Core Skills
โข Java, Spring Boot, Hibernate, JPA
โข React, Angular, TypeScript, JavaScript
โข REST APIs, Microservices, GraphQL
โข AWS (Cognito, EC2, S3), Docker, Kubernetes
โข MySQL, PostgreSQL
โข Spring Security, OAuth2, JWT Authentication
โข AI/LLM Integrations & Workflow Automation (n8n)
โข Xero, Sage & Third-Party API Integrations
I have extensive experience designing scalable REST APIs, modernizing legacy applications, integrating cloud services, and building secure authentication systems. Iโve also led engineering teams, mentored developers, conducted code reviews, and driven technical decisions for enterprise-scale projects.
I focus on writing clean, maintainable code, communicating clearly, and delivering high-quality solutions on time. Whether you need a complete full-stack application, backend APIs, frontend development, cloud integration, or ongoing technical leadership, Iโm ready to help.
Java
Spring Boot
React
Angular
Full-Stack Development
RESTful API
Microservice
Amazon Web Services
SQL
PostgreSQL
MySQL
Docker
Kubernetes
Hibernate
Git
API Integration
Spring Security
Apache Kafka
Automated Workflow
JavaScript
Ankit J.
Bhilwara, India
$20/hr
4.9
49 jobs
๐ Top Rated Plus
๐ Oracle Java Certified
๐100% Job Success Score
๐ 200K+ earned
๐10,000+ hours of hands-on experience
Hi, Iโm Ankit Jain โ 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.
๐ป 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)
๐ง 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 OpenAIโs 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.
๐ค Why Work With Me?
โ๏ธ Proven Success: 10,000+ hours of hands-on experience across a diverse range of projects, ensuring high-quality delivery that exceeds expectations.
โ๏ธ Top-Rated Plus: A trusted professional with a solid reputation for delivering cost-effective, high-quality solutions.
โ๏ธ Versatile Solutions: Whether itโs 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.
โ๏ธ Deep Knowledge in Multiple Domains: From AI and blockchain to cloud infrastructure and enterprise software, I bring in-depth knowledge to every project.
โ๏ธ Strong Communication & Commitment: Iโm committed to clear communication, transparency, and meeting deadlines. Iโm always available for regular updates, feedback, and collaboration.
โ๏ธ Long-Term Partnerships: I build solutions that grow with your business, and Iโm 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, letโs talk!
๐ฉ Send me a message โ Iโd 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
Avneet S.
Gurugram, India
$15/hr
5.0
2 jobs
๐ข Available for New Projects ๐ข
Hi, I'm ๐๐๐ป๐ฒ๐ฒ๐, a Senior Java Developer and Technical Lead with ๐ญ๐ฐ+ years of experience building enterprise software for ๐๐ผ๐ฟ๐๐๐ป๐ฒ ๐ฑ๐ฌ๐ฌ companies across ๐ณ๐ถ๐ป๐๐ฒ๐ฐ๐ต, ๐ต๐ฒ๐ฎ๐น๐๐ต๐ฐ๐ฎ๐ฟ๐ฒ, ๐๐ฒ๐น๐ฒ๐ฐ๐ผ๐บ๐บ๐๐ป๐ถ๐ฐ๐ฎ๐๐ถ๐ผ๐ป๐, ๐ฎ๐ป๐ฑ ๐๐ฎ๐ ๐๐ฒ๐ฐ๐ต๐ป๐ผ๐น๐ผ๐ด๐. I specialize in designing scalable backend systems with Java and Spring Boot while also delivering modern full-stack applications using React and Angular.
I currently work on Canada's online tax platform at ๐&๐ฅ ๐๐น๐ผ๐ฐ๐ธ ๐๐ฎ๐ป๐ฎ๐ฑ๐ฎ, where I design and develop cloud-native applications, microservices, secure APIs, authentication systems, and production-grade integrations used by thousands of users. I enjoy solving complex engineering problems, improving application performance, and building software that's easy to maintain and scale.
I communicate clearly, take ownership of projects, and focus on writing clean, production-ready code rather than quick fixes. Whether you're launching a new product or improving an existing platform, I can help you deliver reliable software faster.
### ๐ช๐๐๐ง ๐ ๐๐๐๐ฃ ๐ช๐๐ง๐
โ๏ธ Enterprise Java Applications (Spring Boot, Microservices, REST APIs)
โ๏ธ Full-Stack Development (React, Angular, TypeScript)
โ๏ธ Legacy Application Modernization & Performance Optimization
โ๏ธ Cloud-Native Development (Azure, AWS, Docker, Kubernetes)
โ๏ธ Authentication & Security (OAuth2, JWT, Auth0)
โ๏ธ Third-Party Integrations, Payment Systems & Enterprise APIs
โ๏ธ System Design, Solution Architecture & Technical Leadership
โ๏ธ AI-assisted Software Development using GitHub Copilot and ChatGPT
Clients appreciate my ability to understand complex business requirements quickly, communicate proactively, and deliver maintainable solutions that continue performing long after deployment.
### ๐ฆ๐ฃ๐๐๐๐๐๐ง๐๐๐ฆ
Java, Spring Boot, Microservices, REST APIs, React, Angular, TypeScript, PostgreSQL, Docker, Kubernetes, Azure, AWS, OAuth2, JWT, Auth0, System Design, Enterprise Architecture, Cloud Development, Full-Stack Development, AI-assisted Software Development.
### ๐ ๐ฌ ๐ฆ๐ง๐๐๐
๐๐ฎ๐ฐ๐ธ๐ฒ๐ป๐ฑ: Java, Spring Boot, Spring Security, Hibernate, REST APIs, Microservices
๐๐ฟ๐ผ๐ป๐๐ฒ๐ป๐ฑ: React, Angular, TypeScript, JavaScript
๐๐น๐ผ๐๐ฑ & ๐๐ฒ๐๐ข๐ฝ๐: Microsoft Azure, AWS, Docker, Kubernetes, Azure DevOps
๐๐ฎ๐๐ฎ๐ฏ๐ฎ๐๐ฒ๐: PostgreSQL, MySQL, SQL Server
๐ง๐ผ๐ผ๐น๐ & ๐๐ป๐๐ฒ๐ด๐ฟ๐ฎ๐๐ถ๐ผ๐ป๐: Auth0, Stripe, Azure Service Bus, Git, CI/CD
###๐ก๐ช๐๐ฌ ๐๐๐ฅ๐ ๐ ๐ (๐ช๐๐๐ง ๐ช๐๐๐ ๐ฌ๐ข๐จ ๐๐๐ง?)
โ Faster time-to-market โ I deliver production-ready APIs, admin panels and integrations so you can start generating value sooner.
โ Less risk, more reliability โ solid architecture, clean code, and production-hardened practices.
โ Real business integrations โ payments, digital signing (Digio), PDF workflows (iText), analytics & notifications.
โ Maintainable systems โ I write code your team can extend, not hacky quick fixes youโll regret.
โ Focus on ROI โ features prioritized by impact, so every sprint moves business metrics.
### ๐ฅ๐๐๐๐ฌ ๐ง๐ข ๐๐จ๐๐๐?
Whether you need a senior engineer to architect a new platform, modernize an existing application, or solve difficult production issues, I'd be happy to help. Let's discuss your project and build software that's scalable, secure, and built to last.
Front-End Development
Back-End Development
React
MongoDB
Java
Spring Boot
Hibernate
Node.js
JavaScript
ExpressJS
API Integration
API Testing
PostgreSQL
MySQL
Redis
NoSQL Database
Apache Kafka
TestNG
Mockito
Azure DevOps
Yogesh P.
Ahmedabad, India
$20/hr
4.7
28 jobs
๐ผ 16+ Years of Experience
๐ง 10+ Years as Architect
๐ Author: Java Hibernate Cookbook
๐บ๐ธ USA B1/B2 Visa Holder
๐ Voice AI & Calling Agent | ๐ค AI/ML | โ๏ธ React | โ Java | ๐ Node.js | 13+ Years | SaaS & Enterprise Systems
Iโm a seasoned Full-Stack Developer with over 16 years of experience building high-performance, scalable applications for startups and enterprises alike. My focus is on delivering quality SaaS-based and multi-tenant solutions tailored to client needs.
Iโve worked across diverse industries including Banking & Financial Services, Healthcare, Transportation, Hospitality, HR, and IT. Whether leading offshore teams or managing projects solo, I bring strong technical leadership, clear communication, and business acumen to every engagement.
๐ผ Core Skills & Technologies
Back-End Development:
โ Java, J2EE, Node.js, TypeScript
โ Spring Boot, Hibernate, Spring MVC, JDBC, JSP, Servlets, Backbase
โ Express.js, NestJS, Jest, Multer, Graphile Scheduler
Front-End Development:
โ React, Angular (2+ to latest), Angular Material
โ HTML5, CSS3, SASS, SCSS
โ JavaScript, TypeScript, JSON
Databases:
โ SQL: Oracle, MySQL, PostgreSQL, SQL Server, MariaDB
โ NoSQL: MongoDB, CouchDB, Couchbase, Firebase, DynamoDB, Apache Lucene
Cloud Platforms:
โ Amazon Web Services (AWS), Google Cloud Platform, Microsoft Azure
DevOps & Tools:
โ Shell Scripting, Jenkins, Kubernetes
โ Payment Integration: Stripe, PayPal
โ Industry Platforms: Backbase, EBICS
๐งฉ What I Bring to the Table
โ Deep business understanding through real-world experience
โ Proven success in enterprise-grade architecture & clean code delivery
โ Strong communication, transparency, and professional integrity
Letโs build something powerful together. Iโm ready to support your project with skill, strategy, and sincerity.
Kubernetes
MongoDB
Java
Python
Microservice
Hibernate
Spring Boot
Amazon Web Services
Angular 2
Spring Framework
Web Development
React
AI Bot
LangChain
AI Agent Development
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