Hire the Best Java Developers in Chennai, IN

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Rating is 4.7 out of 5.
4.7/5
Based on 9,237 client reviews
Harshavardhanan D.

Chennai, India

$60/hr
5.0
2 jobs

I architect and deliver production ready systems that scale from day one, boosting profits while reducing costs. With 15+ years across telecom, logistics, and enterprise platforms, I specialize in turning complex requirements into clear, working backends. What I Specialize In System Architecture & Backend Development → Java, Spring Boot, APIs, Microservices, Distributed Systems Event-Driven Platforms → Apache Kafka, Redis, PostgreSQL, MongoDB, Neo4j Modernization Blueprints → phased cutovers from legacy stacks to microservices & cloud-ready systems First Production Slice Delivery → APIs, event contracts, CI/CD pipelines, observability, and clear documentation baked in How I Help You • From scratch: I’ll turn your idea into a clear architecture and working first slice in production. • Production-focused: I’ll deliver real systems that scale safely, not endless PoCs. • Slice-by-slice growth: Add features safely while keeping every step operable. • Legacy modernization: I’ll blueprint your modernization so you move to APIs/microservices without risky rewrites. Outcomes Delivered • Cut telecom API latency from 3s → 200ms • Built topology graph platform unifying 30+ inventory feeds • Migrated monolith to Kafka microservices powering 50M+ daily transactions • Cut server costs by 60% through microservices rightsizing and caching strategies • Reduced customer onboarding time from 3 days to 2 hours through API automation • Eliminated system crashes during 10x traffic spikes through proper load balancing Why hire me I’m not here to “just code features.” I architect and build the first production slice that your team can scale confidently. Whether you’re designing new systems or modernizing legacy ones, I help you move forward with clarity and confidence.

  • Java
  • Software Architecture & Design
  • Spring Boot
  • Web Development
  • Back-End Development
  • Neo4j
  • Apache Kafka
  • PostgreSQL
  • Node.js
  • Python
  • API Development
  • Microservice
  • Redis
  • Oracle Database
  • MongoDB
Sudhan R.

Chennai, India

$10/hr
5.0
19 jobs

I'm an Automation expert with more than 5 years of experience. For the past 3 years I'm working as a Junior Analyst in a Quant Fund. I'm very good at Web Scraping and Data Science.

  • Selenium WebDriver
  • Selenium
  • Automated Testing
  • Equity Research
  • Java Collections Framework
  • Python Numpy FastAI
  • Python Script
  • Python Fire
  • Visual Basic for Applications
  • pandas
Vasantha K.

Chennai, India

$5/hr
4.8
6 jobs

To work in an environment which encourages me to succeed and grow professionally where I can utilize my skills and knowledge appropriately. Software Languages : Java 8, J2EE, SQL, HTML, CSS, XML, Dart. Architecture and Frameworks : Spring, Spring boot, Angular, Micro services, REST Webservices. Databases : Postgre sql, MySQL, Oracle sql. Software Tools : Eclipse, Toad, Post man, Spring Tool Suite, PG admin, SQL yog. Web Server : Apache 2.4, Tomcat 8.0. Code repository: GIT, GIT Bash, Bitbucket, SVN, Azure devops. Cloud Service : AWS (S3,EC2), Azure (Storage account, Virtual machine). I am enjoinig working with small businesses and individual decision makers to provide architectural and custom business solutions that help my clients resolve mission-critical problems, grow their business, and improve their revenue stream and profitability.

  • Java
  • Hibernate
  • Spring Boot
  • Flutter
  • MongoDB
  • Angular
  • J2EE
  • Apache Log4j
  • Apache Maven
  • HTML
  • Java Servlet API
  • Oracle PLSQL
  • Mavenlink
  • jQuery
VIJAYAKUMAR G.

Chennai, India

$60/hr
4.6
16 jobs

I help product teams integrate AI into their existing Java/Spring Boot systems — turning slow, manual workflows into intelligent, conversational experiences. Recently I built an AI-powered campaign creation system for a leading Indian OTT advertising platform (100M+ users) — replacing complex form-based operations with a conversational AI interface using Spring AI and Claude. The result: faster campaign setup with significantly less manual effort. With 14+ years of delivery across OTT, AdTech, retail, healthcare and fintech — I understand that AI only adds value when it fits your existing architecture and solves a real business problem. I don't prototype. I build production-ready systems. What I deliver: - AI workflow automation inside existing Java/Spring Boot systems - Conversational interfaces replacing form-heavy operations - Microservices architecture and REST/GraphQL API design - Full stack delivery — Spring Boot backend through React frontend Tech I work with: Spring Boot · Spring AI · Claude API · MCP · React · Flutter · AWS · Docker · PostgreSQL · MongoDB My background includes: - Ex-Technical Architect and Java Team Lead - Delivered for Fortune 500s and high-scale startups - $40K+ earned on Upwork across 14 contracts · 3,100+ hours Best fit for: Product companies in OTT, AdTech or fintech with an existing Java backend looking to add AI capabilities — without rebuilding from scratch. I've also delivered across retail and healthcare, so if your problem fits my skills, let's talk. If that sounds like your situation — message me.

  • Java
  • AI Model Integration
  • AI Agent Development
  • AI Chatbot
  • Streaming Platform
  • Campaign Management
  • Advertising Automation
  • Video Stream
  • Prompt Engineering
  • Large Language Model
  • Automated Workflow
  • n8n
  • Retrieval Augmented Generation
  • Vector Database
  • LangChain
  • OpenAI Embeddings
  • Document Processing Software
Mohamed A.

Chennai, India

$30/hr
4.9
13 jobs

I'm Mohamed, a passionate mobile application developer with 10+ years of experience in mobile application development & 7+ years of experience in Flutter, a master's graduate and oracle certified Java developer. I have a great understanding of agile methodologies. I love learning new things and am always lookout for new technologies. I have extensive knowledge of building mobile apps with Flutter, Android & iOS. I can provide potential consultancy from start to end like analyzing requirements, technical feasibility, Wireframing, UX suggestion, API design, Architecture, Developing new features with performance & customization in mind, creating reusable widgets & components, and Unit Testing. I keep myself always up to date with the new trends in development. Technical Skills: • Java, Dart, Kotlin, Swift, Javascript. • Git • Rest API, XML, JSON, and Socket Programming • Sqlite, Postgres, Hive, MongoDB, Firestore Highlights: • In-App purchase, Subscription, Apple Pay & Google Pay. • JWT, SHA1, SHA 256 encryption & decryption • Convert from models to HEX code & ASCII code • QR Scanner - camera & laser scanner integration • Ads Integration • Audio/Video calling • Google API (places, map, distance matrix, analytics) integration • App for Vending Machine/Kiosk • Custom Camera • Hot word detection with Tensor flow lite • Audio/Video Streaming The most important things for me during the development process: • Regular communication • Code quality that should be easy to manage and simple to understand • Honesty and transparency with my clients Please shoot me a message! Let's connect and find out if we are a good fit for each other. I'm happy to be involved in long-term, exciting, and challenging projects🚀

  • Java
  • Spring Boot
  • Android
  • iOS
  • Mobile App Development
  • iOS Development
  • Dart
  • Android App Development
  • Flutter
  • Map Integration
  • Swift
  • Kotlin
  • Node.js
  • Social Media Account Integration
  • Agile Project Management
Vayyavuru M.

Chennai, India

$40/hr
4.7
22 jobs

Looking for a senior software developer with a remarkable track record in app and web development? Wait no further! With over 12 years of professional experience in the software industry, I am the ideal candidate to make your software ends meet. Here's why my technical qualifications make me an exceptional candidate for your development needs. Throughout my career, I have sharpened my skills by mastering a wide range of programming languages and frameworks including but not limited to JavaScript, ReactJS, AngularJS, React Native, EmberJS, NodeJS, Flex, Ruby on Rails, ActionScript3, PHP and java related technologies like (Servlets, JSP, Spring, Hibernate). Client/server systems architecture and development Specialties like Java(Java Core, Servlet, Spring, Vaadin, Log4j, Multithreading. Build environments like Ant, Maven, and HTML/CSS (LESS, Sass), Gulp, ExtJs with jQuery and Bootstrap. My expertise lies in developing innovative solutions that combine cutting-edge technology with seamless user experiences. Whether it's creating captivating gameplay mechanics, designing stunning virtual environments, or building complex mobile and web applications, I thrive on transforming your vision into reality. One notable project that exemplifies my capabilities and provides insights into my potential for handling complexities is the development of a cutting-edge “server monitoring software” for “Hitachi”. I led a team of 80 talented developers and we collaboratively developed a solution that not only eliminated inefficiencies but also provided substantial cost savings and improved decision-making at the company. Collaboration and effective communication are keystones of my work ethic. I thrive in teams by capitalizing on my interpersonal skills to align with clients’ needs and transform complex requirements into efficient and elegant solutions. My ability to adapt to different project dynamics, from fast-paced app development to large-scale enterprise applications, has earned me a reputation as an authentic and resourceful developer. Looking forward to our future collaboration. Regards, Manohar.

  • Java
  • Spring Framework
  • AngularJS
  • CSS 3
  • React
  • Node.js
  • HTML5
  • JavaScript
  • J2EE
  • Adobe Flex

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