Upwork home
Sign up
Secondary

Hire the best Java Developers in Kolkata, IN

Check out Java Developers in Kolkata, IN with the skills you need for your next job.
Hire freelancers
Clients rate Java developers
Rating is 4.7 out of 5.
4.7/5
based on 9,237 client reviews
  • $15 hourly

    • 4.8/5
    • (21 jobs)
    I'm web and mobile app developer expert in PHP/ Python/ Google Workspace/ Apps Script/ JavaScript/ HTML/ CSS/ API/ Scraping/ Web Hooks/ MySQL/ MariaDB/ NoSQL. Cross-platform Developer Over my 14+ years of experience working for MNC's, i have come across several operational challenges and various type of technologies. "Spartan: keep it short and simple", is my approach to problems where possible. I am also an excellent communicator, with extensive experience in team leadership, team management and successful interactions with clients. Magento, WordPress, Cake PHP, CodeIgniter, Laravel are the most favorite framework for me. My few expertise are in as below:- 1. API integration 2. Web scraping. 3. WordPress plugin & Theme building. 4. Working with automation tools like, Zapier, Make etc. 5. My SQL data base. 6. Developing Games.
    vsuc_fltilesrefresh_TrophyIcon Java
    Shopify
    Online Chat Support
    MySQL
    Desktop Support
    Data Extraction
    Data Scraping
    Web Application
    Inventory Plugin
  • $30 hourly

    • 5.0/5
    • (23 jobs)
    Hello! I'm Yash, a dedicated freelancer specializing in Full Stack development and Chrome Extension creation. With my expertise in both front-end and back-end technologies, I offer comprehensive solutions to meet your specific requirements. As a Full Stack developer, I have a strong command over a variety of programming languages, frameworks, and databases. I can craft visually engaging user interfaces using HTML, CSS, and JavaScript, while also implementing robust server-side functionality with Node.js and Python (Django). Moreover, I have extensive experience in Chrome Extension development. I am well-versed in the Chrome API and manifest file structure, enabling me to create powerful extensions tailored to your needs. Whether it involves integrating with third-party APIs, manipulating web pages, or implementing effective data storage mechanisms, I can bring your ideas to life through feature-rich Chrome Extensions. What sets me apart is my commitment to professionalism, attention to detail, and delivering top-notch solutions. I strongly believe in clear communication and collaboration, and I will involve you in the development process from initial concept to the final product delivery. With my diverse skill set and passion for innovation, I am ready to transform your ideas into efficient, scalable, and visually appealing solutions, tailored specifically to your needs. Let's work together to achieve your goals!
    vsuc_fltilesrefresh_TrophyIcon Java
    Tailwind CSS
    Flask
    Django
    ExpressJS
    Google Chrome Extension
    Web Development
    CSS
    Browser Extension
    HTML
    Web Design
    Node.js
    API Integration
    Python
    JavaScript
  • $20 hourly

    • 4.5/5
    • (20 jobs)
    I am a MOBILE & WEB full stack developer. I have spent much of time developing the mobile apps & games in both IOS & Android platform using NATIVE/FLUTTER technology and Java Spring Boot/PHP for backend API/Admin portal/Web development. I will follow your requirements and definitely offer you the best-designed, neat and excellent work with quality testing. SkillSet ✔ Android development (Kotlin, Java) ✔ iOS development (Swift/SwiftUI) ✔ iOS + Android development (Flutter) ✔ Website development (PHP/MySQL) ✔ Database design(MSSQL Server, MySQL, MongoDB, Postgres) ✔ API development(Java Spring Boot, Cake PHP) ✔ Version control (GitHub, BitBucket, SVN) ✔ Task Manager (Jira, Trello, Basecamp) Work Ethics ✔ Correct time management ✔ Experience in project management ✔ High Scalability of your idea ✔ Quality of the final product ✔ Fulfilment of actual need and maintain long-term client relationship ✔ Customer time-to-value after delivery Feel free to contact me anytime! Thank you for going through my profile. Thanks & Regards, Kousik D
    vsuc_fltilesrefresh_TrophyIcon Java
    Android SDK
    JavaScript
    Android
    iOS
    Kotlin
    Swift
    Spring Boot
    Android Studio
    Mobile App Development
    iOS Development
    PHP
    Android App Development
  • $20 hourly

    • 5.0/5
    • (11 jobs)
    An Expert in React Native, Java Kotlin, Flutter, Laravel, NodeJs, WebService, Api Development | 10+ Yrs of Exp. Expert in React Native, Java Kotlin, Flutter, Laravel, NodeJs, WebService, Api Development, and Payment Gateway. I like the challenges and I love to work on challenging projects. -I am a passionate Mobile Application Developer. I have worked on different technologies and keep myself updated on the latest trends in the coding world. Over 10 years of solid experience, I am always keen to learn new things. -I can easily adapt myself to the required technologies and new teams. -Good communication and reliability are my biggest assets. -I write modular, clear and robust codes, and I like to develop complex web applications from scratch. - I'm eager to give good solutions which are well-structured and easy to maintain and extend in future. - Its my sole responsibility to understand your requirement objective and provide you best solutions to make your website unique.
    vsuc_fltilesrefresh_TrophyIcon Java
    Firebase
    Kotlin
    React Native
    Payment Gateway Integration
    API Development
    PHP
    MySQL
    Node.js
    Laravel
  • $30 hourly

    • 4.9/5
    • (9 jobs)
    “I’m a developer with more than 6 years of industrial experience, building solutions for small and medium-sized businesses. Whether you’re trying to win work, list your services, or even create a whole online store – I can help! Below are my expertise domains: Java, Javascript, Spring Boot, Spring MVC, SQL, DevOps, Microservices, AWS, Oracle Cloud, Docker, CI/CD, Jenkins, Node.js, React. Feel free to reach out"
    vsuc_fltilesrefresh_TrophyIcon Java
    Terraform
    SQL Server Reporting Services
    SQL Server Integration Services
    JavaScript
    DevOps
    Oracle Cloud
    React
    RESTful API
    JDBC
    Spring Boot
    Hibernate
    SQL
    Microsoft SQL Server
    Amazon Web Services
  • $15 hourly

    • 5.0/5
    • (6 jobs)
    I have had 10+ years of experience in Functional Testing and Performance Testing, and Mobile Testing. I have handsome experience in using JMeter, LoadRunner, Selenium Automation, and other performance monitoring tools. ******************************SKILL SET::*********************************** Excellent knowledge of web and mobile Automation testing. Working experience of performance testing tool “JMETER”. Working experience of Performance testing tool LOADRUNNER. Working experience of Automation testing tool SELENIUM. He supported Functional Testing, Automation Testing, and Performance Testing across the software development life cycle (SDLC). Proficiency in Exploratory Testing, Functional Testing , Integration Testing, System Testing, Automation Testing, User acceptance Testing, Usability Testing, Load Testing, Stress Testing, Endurance Testing, Spike Testing, Volume Testing and Scalability Testing. Working Experience in Agile (SCRUM Methodology). Experience in Database SQL and UNIX Testing. ***************************** EDUCATION AND CERTIFICATIONS:************************ B.E in Information and Technology ISTQB Foundation Level IBM Z/OS Agile Delivery Fundamentals (TCS) ERP CRM Testing –Performance Testing SAP E0(TCS) SFDC Training(CTS) ***************************** KEY ROLES AND RESPONSIBILITIES************************ Test Plan: Created functional and performance test plans, including the overall approach of testing, pre-testing, performance testing activity, In-scope and out-of-scope business process, and performance testing scenarios. Creating Test Script: Created Performance and Automation Test scripts which includes process of Recording scripts, correlation, transaction naming, replay and verification. Scenario Creation: Created performance test scenarios in the tool, which includes the detail of ramp up, ramp down, and steady state. Managing all the Testing documents and scripts related to project at our end. Coordinate with our developing team members and make clear about Bugs and Expected Results. Test execution: The scripts are executed for a predefined period. At the same time, the performance test progress is monitored along with different aspects of server like CPU usage, memory consumption, etc. Test Result Analysis: Consolidated the test results for determine the different performance attributes of the application and finding the performance bottlenecks. Defect Tracking: logging bugs, changing status of bug as per current state and finally resolve after fixing. Project Sign off: Hand over project to customer
    vsuc_fltilesrefresh_TrophyIcon Java
    Installation Testing
    Software Testing
    Jira
    API Testing
    Functional Testing
    End-to-End Testing
    Software QA
    Security Testing
    Web Testing
    System Testing
    Manual Testing
    Apache JMeter
    Database Testing
    Selenium WebDriver
  • $35 hourly

    • 5.0/5
    • (15 jobs)
    I have more than 17 years of software development experience including product management role. During this time I have designed/architect and developed multiple JEE application in variety domains including GIS, financial world to IoT. I have extensive experience on number of Spring based open source frameworks. Also has developed application on big data and real time streaming data processing using Kafka/Spark stack. I also have experience in developing web GIS product for managing georeferencing maps.
    vsuc_fltilesrefresh_TrophyIcon Java
    JDBC
    Spring Framework
    NoSQL Database
    Big Data
    Apache Spark
    Apache Hadoop
    Apache Kafka
  • $15 hourly

    • 5.0/5
    • (13 jobs)
    🎯Area of Expertise - Quality Assurance:- ************************************************ ✔Manual Testing, ✔API Testing✔Automation Testing ✔Integration Testing, ✔System Testing,✔Sanity Testing,✔Smoke Testing, ✔Interface Testing, ✔Regression Testing, ✔User Acceptance Testing, ✔Performance Testing, ✔Load Testing, ✔Stress Testing, ✔End-to-end Testing,✔Security Testing, ✔Compatibility Testing, ✔Usability Testing, ✔Mobile Testing With a proven track record of successful achievements, I am pleased to present my application for your consideration. Having several years of experience in the industry, and a strong educational background featuring a degree in Computer Science, I strongly believe I can make a significant contribution to the project. My expertise includes - Good hands-on experience in Java, J2EE, Python, Web scraping and data extraction. -Experience in ample frameworks like Spring, Hibernate, Struts 2 - Extensive knowledge of jQuery and JavaScript - Strong database knowledge specifically MySQL, Oracle, PHPMyAdmin and querying the database. Know-how of manual and Automated GUI Test Scripts based on the functional and non- functional requirements as described in software requirement specifications.  -Understanding the software requirements, business requirements, GUI requirements, and contribution to the Test Plan preparation.  -Maintaining test specification documents and performing manual testing.  -Designing test cases based on the functional and non-functional requirements as described in test plans, software requirement specification and change request forms.  -Execution and Development of test cases using testing tools like Selenium and Test Complete. • Developing and maintaining automated test scripts cases using testing tools like Selenium and Test Complete.  -Maintaining automated regression test suit.  -Development of review reports, bug status reports, functional specifications analysis reports, and quality summary reports. • Maintenance and tracking of bugs Over the years I have worked on website building, redesigning and maintenance projects and have got a good knowledge of the front-end technologies.
    vsuc_fltilesrefresh_TrophyIcon Java
    J2EE
    JUnit
    jQuery
    CSS
    Hibernate
    HTML
    Cucumber
    Spring Framework
    QA Testing
    Data Entry
    SurveyMonkey
    JavaScript
    Selenium WebDriver
    PHP
  • $20 hourly

    • 5.0/5
    • (3 jobs)
    🔰 Expert Full-Stack Developer 🖥️ Java, Python, Angular, PHP, React, Wordpress Expert 🏆 100% Job Success. 🏅 Worked with big enterprises. 🎯 More than 10+ satisfied clients worldwide (Mainly US, UK & Germany) 🔰 8+ years of experience. 💎 15+ Project experience 📈 Contributed to more than a million USD in client revenue. Greetings! With over 8+ years of rich experience in Back-end Development I, Ronny thank you for considering me and reading about me and my work. My Primary Skills: ⚈ Java, Python, PHP, Angular, React JS, Wordpress ⚈ JavaScript, AngularJS, Angular 2+, TypeScript, React JS ⚈ Material UI, Bootstrap, Responsive UI ⚈ Spring Boot, Hibernet, JPA, Laravel, Flask, Django ⚈ Image Processing, OpenCV, AI, Machine Learning ⚈ RestFul Web API, API Integration, Payment Gateways (Stripe, Paypal, Razorpay) ⚈ MySQL, MongoDB, Elasticsearch, PostgreSQL, SQL Server, FireBase ⚈ IIS / Apache / NGINX Web Server, Azure, AWS ⚈ Agile Methodology, CI/CD, DevOps Pipelines, JIRA, BitBucket ⚈ Micro Services / Docker / Kubernetes / Jenkins / Serverless Functions Why Me: - 8+ years of proven experience in big enterprises like Oracle. - Proven experience in multiple domains and technologies. - Ability to quickly understand existing code base and implement solutions. - Completed more than 15 big projects. - Great team player and open to collaborate with other teams. Domains Experienced In: ✅ E-Commerce, Healthcare, E-Learning. ✅ Finance, and Real Estate. ✅ Rest API Development and Web Services. ✅Payment Gateways Integration. Working hours: 40 hrs/week Feel free to contact me to learn more about my work and how I can help you. Thanks for your reading, See you soon.
    vsuc_fltilesrefresh_TrophyIcon Java
    Core Java
    Bootstrap
    CSS
    HTML
    Angular
    JavaScript
    MySQL
    RESTful API
    Spring Boot
    Spring Data
    Spring Security
    MongoDB
    Microservice
    Hibernate
  • $13 hourly

    • 4.9/5
    • (3 jobs)
    Hi This is Sarmistha Gupta. I am the cofounder of Velectico Consulting, a software development & services company. At Velectico, we're more than just a software development company – we're your dedicated partners in leveraging technology to drive your business forward. Established in 2018, my co-founder and I have been at the forefront of innovation, delivering innovative solutions to clients across the globe from our base in India. As co-founders of Velectico, we bring a wealth of experience and expertise to the table, ensuring that every project we undertake is met with the highest standards of quality and professionalism. Our team consists of seasoned developers, designers, and project managers who are passionate about crafting tailor-made solutions to meet your unique needs. 🌟 Our Services: #Custom Software Development: From concept to deployment, we build bespoke software solutions that align with your business objectives. #Web & Mobile App Development: Harness the power of the web and mobile platforms with our expert development services. #UI/UX Design: We create intuitive and visually stunning user interfaces that enhance user experience and engagement. #E-commerce Solutions: Launch and grow your online store with our comprehensive e-commerce development services. #Digital Transformation: Embrace the future with our digital transformation solutions designed to streamline your business processes and drive growth. 🤝 Why Choose Us: #Client-Centric Approach: Your satisfaction is our top priority, and we work closely with you to ensure that your project meets your expectations. #Transparency & Communication: We believe in open and honest communication throughout the project lifecycle, keeping you informed every step of the way. #Expertise & Experience: With years of experience in the industry, we have the knowledge and skills to deliver high-quality solutions that exceed your expectations. #On-Time Delivery, Within Budget: We understand the importance of deadlines and budgets, and we're committed to delivering your project on time and within budget. Ready to take your business to the next level? Let's connect and discuss how Velectico Consulting Private Limited can help you achieve your goals through the power of technology.
    vsuc_fltilesrefresh_TrophyIcon Java
    NodeJS Framework
    Android App Development
    Data Entry
    Tesseract OCR
    Mobile App Development
    AWS Systems Manager
    CSS
    HTML
    Python
    JavaScript
    Web Application
    PHP
    Desktop Application
    Node.js
  • $20 hourly

    • 5.0/5
    • (7 jobs)
    I am a new freelancer having experience in React, Node.js, MySQL, Python, Arduino and Raspberry pi. I have hands-on experience building various distributed systems, Machine learning projects and web application development. Will deliver on projects quickly and provide revisions if required.
    vsuc_fltilesrefresh_TrophyIcon Java
    Vue.js
    Svelte
    React Native
    React
    Next.js
    Web Server
    JavaScript
    Android App Development
    Android
    Scripting
    Node.js
    Machine Learning
    Python
    Reinforcement Learning
  • $35 hourly

    • 5.0/5
    • (1 job)
    I am a highly skilled Java Selenium Automation Expert with extensive experience in developing automated test scripts and frameworks. With a strong background in software development and quality assurance, I offer expertise in creating robust and efficient automation solutions to streamline testing processes and ensure the delivery of high-quality software. Key Responsibilities: Developing and maintaining automated test scripts using Java and Selenium WebDriver. Designing and implementing automation frameworks to ensure scalability, maintainability, and reusability. Collaborating with cross-functional teams to gather requirements, define test scenarios, and identify automation opportunities. Executing automated test suites, analyzing test results, and reporting defects in a timely manner. Conducting code reviews and providing technical guidance to ensure code quality and adherence to best practices. Keeping up-to-date with the latest industry trends, tools, and technologies related to automation testing. Why Hire Me: Extensive experience as a Java Selenium Automation Expert with a proven track record of delivering high-quality automation solutions. Strong programming skills in Java, enabling efficient test script development and maintenance. Deep understanding of automation frameworks and best practices, ensuring scalable and maintainable test suites. Excellent problem-solving and debugging skills, allowing for quick identification and resolution of issues. Effective communication and collaboration skills, enabling seamless integration within cross-functional teams. Professional work ethic, delivering projects on time and within budget. Commitment to continuous learning and staying updated with the latest advancements in automation testing. If you are looking for a Java Selenium Automation Expert who can deliver exceptional results and help you achieve your software quality goals, I am ready to collaborate with you on Upwork. Let's discuss your project requirements and take your automation efforts to the next level.
    vsuc_fltilesrefresh_TrophyIcon Java
    AMP Framework
    WordPress e-Commerce
    Web Hosting
    WordPress Development
    WordPress SEO Plugin
    Oracle PLSQL
    Unix Shell
    Selenium WebDriver
    Selenium
    PostgreSQL
    MySQL
  • $10 hourly

    • 5.0/5
    • (3 jobs)
    As an experienced iOS developer with over 6 years of industry experience, I specialize in creating high-performance and user-friendly mobile applications for iOS devices. My skills include proficiency in Swift, Objective-C, Xcode, and iOS SDK, among others. Throughout my career, I have developed and delivered several successful iOS applications, ranging from small projects to complex enterprise-level applications. My expertise in developing custom iOS applications, as well as integrating third-party libraries and APIs, has helped me provide high-quality solutions that meet the unique requirements of my clients. In addition to my technical skills, I am a dedicated and collaborative team player who believes in delivering high-quality work within strict timelines. I have excellent communication skills and can easily adapt to new technologies and programming languages. If you are looking for an experienced and skilled iOS developer who can deliver high-quality solutions on time and within budget, look no further. Contact me to discuss your project requirements, and I would be happy to help you achieve your goals.
    vsuc_fltilesrefresh_TrophyIcon Java
    Bitbucket
    Mixpanel
    Git
    Apple Xcode
    GitHub
    iOS
    Android
    Google Analytics
    Firebase
    Swift
  • $12 hourly

    • 5.0/5
    • (24 jobs)
    An enthusiastic tutor in Physics and Math with 5 years of experience and 2 work-abroad opportunities, dealing with 6 different curricula- Canadian, American, Australian(HSC), GCSE, IGCSE and UAE. I have worked with International coaching institutions, carrying out Indian and Australian curricula simultaneously. Having coached ICSE and CBSE students in India for 4 years, I have a well-rounded skill set in Algebra, Geometry, and Calculus. Obtaining a Graduation in Physics (GPA: 8.856), I have gained theoretical finesse in Mechanics, Thermodynamics, Electromagnetism and Atomic Physics. Planning and detailing have always been an integral part of my methodology, to help students excel and bring out their best potential. With my dedication and patience, I aim to provide the best support to students. Looking forward to helping you the most. Best Regards, Disha
    vsuc_fltilesrefresh_TrophyIcon Java
    Communication Skills
    Physics Tutoring
    Calculus
    Geometry
    Organizational Plan
    Algebra
    Mathematics Tutoring
    Python
    LaTeX
    Problem Solving
    Physics
  • $12 hourly

    • 4.7/5
    • (28 jobs)
    Software Engineer. Here to keep brushing up my skills. Proficient in both Web Dev and Android Dev. Creative and Always on the go to keep finding solutions. Have worked for top firms and made top notch products. Interested in Data science. I have created - and improved - dozens of successful applications for clients in areas of social networking, education, video streaming, entertainment, self-help, fitness, lifestyle, and commerce. - Android Development - Web development - Wordpress - Wix -Overall Backend - Django -Data Science -Data scraping, visualization -Microsoft office proficient -SQL -Python -Java, C++ Robust technology and business experience combine for strong project outcomes no matter the size. I welcome discussing your projects and helping you find success! 𝗗𝗿𝗼𝗽 𝗺𝗲 𝗮 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 𝗼𝗿 𝘀𝗲𝗻𝗱 𝗺𝗲 𝗮𝗻 𝗶𝗻𝘃𝗶𝘁𝗲 𝘁𝗼 𝘀𝘁𝗮𝗿𝘁 𝗴𝗲𝗻𝗲𝗿𝗮𝘁𝗶𝗻𝗴 𝗹𝗲𝗮𝗱𝘀 𝗳𝗼𝗿 𝘆𝗼𝘂𝗿 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀.
    vsuc_fltilesrefresh_TrophyIcon Java
    Algorithm Development
    Algorithms
    C
    Android
    MySQL Programming
    Back-End Development
    AJAX
    CSS
    Django
    Node.js
    React
    CSS 3
    JavaScript
    C++
  • $25 hourly

    • 5.0/5
    • (2 jobs)
    I can build microservices from scratch using Spring Boot and then tie them all together using Spring Cloud. I can help you draw out the kind of system which is best for your needs and then work on making that architecture and system come alive. ✅ 13+ years of experience in application backend development ✅ Java, J2EE ✅ Spring Boot, Hibernate, Spring AOP ✅ RESTful API ✅ ElasticSearch ✅ SQL and ORMs [MySQL, SQL Server, Oracle, PostgreSQL] ✅ NoSQL [MongoDB] ✅ Oauth2.0 [Keycloak, Okta, Auth0, Spring Security] ✅ Microservices Architecture ✅ Git ✅ CI/CD ✅ JMS, RabbitMQ, ActiveMQ, Apache Kafka Scripting languages ✅ Shell Script Cloud platforms ✅ AWS [EC2, S3, RDS, Lambda, VPC, CloudFront, Elastic Beanstalk, IAM, Route 53 ] DevOps Experience ✅ Docker ✅ Jenkins Extensive Experience Microsoft graph Api , Ringcentral Api, Sendgrid Api Top Front-end Frameworks: ✓ Angular JS ✓ JQuery
    vsuc_fltilesrefresh_TrophyIcon Java
    NoSQL Database
    AWS Development
    Amazon EC2
    Amazon S3
    Apache Kafka
    Elasticsearch
    Spring Data MongoDB
    RESTful API
    PostgreSQL
    Spring Boot
    Docker
    Database
    MySQL
  • $60 hourly

    • 0.0/5
    • (0 jobs)
    12 Years of software development experience in Java/J2EE Professional skills Java/J2EE, HTML, CSS, Javascript, jQuery, Spring ,Spring Boot,RESTful web services, MySQL, Oracle, SVN,GIT, Maven, Eclipse
    vsuc_fltilesrefresh_TrophyIcon Java
    J2EE
    Hive
    MyEclipse
    Linux
    Big Data
    RESTful API
    jQuery
    Apache Maven
    JavaScript
    CSS
    Git
    Spring Boot
    MySQL
    HTML
  • $15 hourly

    • 5.0/5
    • (5 jobs)
    • Professional Summary: With over 20 years of dedicated experience in the IT industry, I am a seasoned professional specializing in artificial intelligence (AI) and machine learning (ML) technologies. My expertise encompasses a broad spectrum of AI applications, ranging from open-source models to deep learning frameworks and exploratory data analysis techniques. I bring a wealth of hands-on experience in implementing cutting-edge AI solutions and leading successful projects across various domains. • Technical Expertise: I have a proven track record of working with state-of-the-art open-source models including Langchain, Hugging Face, LLAMA2, Librosa, and OpenAI Whisper. Utilizing deep learning frameworks such as Scikit-learn, Keras, and TensorFlow, I have developed and deployed ML models for a multitude of applications. My proficiency extends to exploratory data analysis using advanced libraries like NumPy, SciPy, and Pandas, enabling data-driven insights and informed decision-making. • AI Project Highlights: Implemented video analysis pipelines leveraging Cloud Vision APIs, enhancing video content understanding and semantic segmentation. Developed patient data forecasting solutions utilizing BigQuery Sparse ML, offering predictive insights for healthcare management and resource allocation. Conducted comprehensive internet infrastructure data analysis and usage forecasting, employing Vertex AI autoregression models for accurate predictive modeling. Applied DICOM image data analysis techniques using Cloud Healthcare APIs, facilitating medical image processing and diagnostic assistance. • Generative AI and Chatbot Development: I have pioneered the creation of innovative Generative AI plugins for Looker dashboards, integrating text-bison models with Palm API to generate dynamic visualizations and insights. Additionally, I have designed and implemented interactive chatbots using Vector DB, RAG, and Langchain, enhancing user engagement and customer support functionalities. • Full-Stack Development and Leadership: In addition to AI expertise, I possess a strong background in full-stack development, website development, and mobile app development. Proficient in technologies such as React JS, React Native, Android, Node JS, and Gen App Builder, I have successfully delivered scalable and robust software solutions. Furthermore, I have demonstrated leadership capabilities by effectively leading teams of developers and providing technical guidance and mentorship to drive project success. • Overall Summary: As a forward-thinking AI specialist with a proven track record of delivering transformative solutions, I am committed to driving innovation and achieving unparalleled results for my clients. With a comprehensive skill set, deep domain knowledge, and a passion for pushing the boundaries of AI technology, I am well-positioned to tackle the most challenging projects and deliver exceptional value to clients seeking cutting-edge AI solutions.
    vsuc_fltilesrefresh_TrophyIcon Java
    Kotlin
    Android
    MongoDB
    React Native
    React
    Next.js
    MLOps
    Seaborn
    Exploratory Data Analysis
    Python Scikit-Learn
    Artificial Intelligence
    AI Chatbot
    Generative AI
    Node.js
  • $30 hourly

    • 5.0/5
    • (1 job)
    I am Soumili Chakraborty, a Bachelor of Technology student specializing in AI, currently studying at the Institute of Engineering and Management in Kolkata, India. With my expertise in programming languages such as Python, C++, C, and JAVA, I have developed several web technologies including HTML, CSS, JavaScript, Bootstrap, and JQuery. Additionally, I am proficient in using Git, Github, Atom, and VS code. My passion for problem-solving and data structures and algorithms is evident from my work as a Problem Setter Intern at iMocha, where I regularly create and test problems. Currently, I am working on various web development projects, including ReKonnect, a website that enables group video chats, and a single-player snake game that I hope to turn into a web application.
    vsuc_fltilesrefresh_TrophyIcon Java
    Data Structures
    Bootstrap
    C++
    Artificial Intelligence
  • $20 hourly

    • 4.9/5
    • (2 jobs)
    I am a data modeler/engineer with experience in building data models and ETL pipelines and creating data delivery solutions from the inception phase all the way to the go live phase. Some of my relevant skills/technologies i have worked with include: Apache Spark, Apache Hadoop, MapReduce, Dataflow, Dataproc, Java, GCP, Palantir, Power BI Reporting, GCP Cloud functions, GCP Bigquery, GCP Dataflow, etc
    vsuc_fltilesrefresh_TrophyIcon Java
    Data Warehousing & ETL Software
    Software Development
    Google Cloud Platform
    BigQuery
    Data Science
    Data Warehousing
    ETL
    Data Modeling
    Data Engineering
    RESTful API
    Python
    Spring Boot
  • $25 hourly

    • 5.0/5
    • (1 job)
    I am an experienced full stack developer with expertise in a wide range of technologies such as Node.js, React.js, Next.js, Angular.js, Java, Python, TypeScript, JavaScript, Git, GitHub, Postman, API Development, and more. My diverse skill set allows me to handle all aspects of web development, from frontend to backend🚀 I have a proven track record of developing full stack applications for more than 3 years now. My experience spans across various projects, allowing me to deliver robust and efficient solutions. I'm proficient with a variety of productivity tools and constantly expanding my knowledge to stay current with the latest industry trends✨ Key Skills: ✅Frontend • React.js • Next.js • SvelteKit • TailwindCSS • jQuery • HTML/CSS • JavaScript • TypeScript ✅Backend • Node.js • Express.js • Axios • AdonisJS • TypeScript • Java • Python ✅Databases • MongoDB • SQL • Lucid ORM ✅Tools & Technologies • Git • GitHub • Postman • Docker • Vercel • Netlify • MAMP • XAMPP Apart from these key skills, I am also proficient in problem solving, there have been scenarios in my development journey, where I had to develop certain solutions to better optimize the applications and I was able to come up with solutions that improved the performance of my applications✨ Recently I developed a full stack recruitment platform, where the applicants can apply to any job role and receive confirmation messages on WhatsApp with a feature to reschedule their applications and based on their applications there is a dashboard for the HRs in the company that would be able review, interview or accept applicants and also get a great UI to perform such applications. I can be the developer your team needs for their full stack development and actually add value to your team!🙌👨‍💻
    vsuc_fltilesrefresh_TrophyIcon Java
    GitHub
    Git
    Docker
    Postman
    API Development
    ExpressJS
    SQL
    MongoDB
    Next.js
    Node.js
    TypeScript
    JavaScript
    Svelte
    React
  • $5 hourly

    • 4.9/5
    • (21 jobs)
    I'm an experienced developer proficient in building websites for small and medium-sized businesses. Whether you're looking to secure projects, present your services, or establish an online store, I have the skills to help. I specialize in HTML and CSS3 and have expertise in JavaScript, TypeScript, and C#. Additionally, I'm well-versed in React.js and Angular.js. I offer full project management from start to finish, with a strong emphasis on regular communication. Let's stay connected to ensure the success of your project.
    vsuc_fltilesrefresh_TrophyIcon Java
    NestJS
    API Development
    SQL
    C#
    Node.js
    MongoDB
    CSS 3
    HTML
    Bootstrap
    JavaScript
    TypeScript
    Web Development
    Angular
    React
  • $18 hourly

    • 5.0/5
    • (1 job)
    🚀 Experienced QA Engineer | Software Testing Expert | Quality Assurance Specialist 🚀 Welcome to my Upwork profile! I'm Rahul Mather, a dedicated Quality Assurance Engineer with a passion for ensuring the highest standards of software quality. With 4.5 years of hands-on experience in software testing, I bring a wealth of knowledge and expertise to every project I undertake. 🔍 Skills and Expertise: Manual and Automated Testing: Proficient in both manual and automated testing methodologies, ensuring comprehensive coverage of test scenarios. Test Planning and Execution: Adept at creating detailed test plans and executing them meticulously to identify and resolve software defects. Test Automation Tools: Experienced in utilizing industry-leading automation tools such as Selenium, JUnit, TestNG, and more to streamline testing processes. Cross-Browser and Cross-Platform Testing: Ensuring seamless functionality across various browsers and platforms to deliver a superior user experience. Defect Tracking and Reporting: Proven track record of using defect tracking tools like Jira to report, track, and manage issues through their lifecycle. 💡 Why Choose Me: Quality Assurance Excellence: Committed to delivering software that not only meets but exceeds client expectations by focusing on quality throughout the development lifecycle. Effective Communication: Clear and concise communication is key to successful collaboration. I prioritize keeping all stakeholders informed throughout the testing process. Adaptability: In the ever-evolving landscape of software development, I stay up-to-date with the latest QA trends and methodologies, ensuring the most effective and efficient testing practices. 🌐 Previous Success: In my previous roles, I've successfully contributed to the quality assurance processes of [mention specific projects or industries], helping teams deliver robust and reliable software solutions. 🤝 Let's Collaborate: Whether you're looking for a QA engineer to conduct thorough manual testing, implement automated testing frameworks, or enhance your overall QA strategy, I'm here to help. Let's work together to elevate the quality of your software and ensure a seamless user experience. 📬 Contact Me: Feel free to reach out if you have any questions or if you're interested in discussing how I can contribute to the success of your project. I'm excited to bring my skills and dedication to your team!
    vsuc_fltilesrefresh_TrophyIcon Java
    Static Testing
    System Automation
    Testing
    Automation
    Quality Assurance
    Selenium
    TestNG
    Jira
    User Acceptance Testing
    Alpha Testing
    Beta Testing
    Software QA
    Test Results & Analysis
    Software Testing
  • $100 hourly

    • 0.0/5
    • (0 jobs)
    Career Objective * To make a positive impact in my field activity leading to Organization growth by creative application of my value based convictions and professional divinity by putting my all efforts in the work assigned to me in an organization where I can grow along with the organization.
    vsuc_fltilesrefresh_TrophyIcon Java
    Content Writing
    Electrical Engineering
    Economics
    Data Structures
    Psychology
    C++
    Computing & Networking
    Software Development
  • $50 hourly

    • 0.0/5
    • (0 jobs)
    I’m a developer experienced in building websites for small and medium-sized businesses. Whether you’re trying to win work, list your services, or create a new online store, I can help. Knows HTML and CSS3, PHP, jQuery, Wordpress, and SEO Full project management from start to finish Regular communication is important to me, so let’s keep in touch.
    vsuc_fltilesrefresh_TrophyIcon Java
    Database
    Ecommerce Website
    Web Application
    Web Development
    Product Development
    Ecommerce
  • $75 hourly

    • 0.0/5
    • (0 jobs)
    Hands on Software Architect and Developer with wide experience in the enterprise. Experience across multiple languages and frameworks. Can excel in maintaining or modernising your precious legacy app as well work on building a new cloud native application.
    vsuc_fltilesrefresh_TrophyIcon Java
    DevOps
    Compliance
    Problem Solving
    Architectural Design
    Architecture
    J2EE
    Scala
    Golang
    JavaScript
    Spring Boot
    Spring Framework
    Microservice
  • $500 hourly

    • 0.0/5
    • (0 jobs)
    Seeking to work in an environment that pushes me to grow further, where I can actively contribute to the organization's growth and success. My goal is to secure a long-term position with a company that is at the forefront of innovation, values its employees, and is dedicated to promoting exceptional products.
    vsuc_fltilesrefresh_TrophyIcon Java
    Spring Boot
    Python
    SQL
    Information Security
    Database Management
    Database
  • Want to browse more freelancers?
    Sign up

How hiring on Upwork works

1. Post a job

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.

Trusted by

How do I hire a Java Developer near Kolkata, on Upwork?

You can hire a Java Developer near Kolkata, on Upwork in four simple steps:

  • Create a job post tailored to your Java Developer project scope. We’ll walk you through the process step by step.
  • Browse top Java Developer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top Java Developer profiles and interview.
  • Hire the right Java Developer for your project from Upwork, the world’s largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a Java Developer?

Rates charged by Java Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a Java Developer near Kolkata, on Upwork?

As the world’s work marketplace, we connect highly-skilled freelance Java Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Java Developer team you need to succeed.

Can I hire a Java Developer near Kolkata, within 24 hours on Upwork?

Depending on availability and the quality of your job post, it’s entirely possible to sign up for Upwork and receive Java Developer proposals within 24 hours of posting a job description.

Looking to hire for long-term or full-time assignments? See how Full-time hiring on Upwork simplifies the process.