Pancham G.
Expert-Vetted
$40/hr
100% Job Success
$500K+ earned
Offers Consultations
Java J2EE Spring Framework Spring Boot Spring Security RESTful API Microservice Hibernate SQL Programming RabbitMQ CI/CD Amazon Web Services Microsoft Azure DevOps Cloud Computing
**EXPERT VETTED BY UPWORK and among Top 1% talent on Upwork** I am a Full-Time Freelance IT consultant with more than 12 years of rich and varied experience in providing solutions to clients in various domains in the form of – • Full stack web application development • Enterprise applications development • Backend web services development • Desktop application development • Cloud infrastructure development I have extensive experience of developing applications in - Java, J2EE, Spring, JPA, Hibernate, Angular, Typescript and React Framework. BACKEND DEVELOPMENT - I have worked upon and developed backed of at least 100 different applications to date, which involves extensive experience working with Event Driven Architecture, Micro services architecture and Backend Web Services development. I also have strong hands-on experience and rely heavily upon TDD and BDD approach of Software development FRONT-END DEVELOPMENT - At the front-end, my expertise lies in working with – • JSP • JSF • Vaadin • JavaScript • HTML5 • CSS • Ajax • Bootstrap DESKTOP APPLICATION DEVELOPMENT - I have strong knowledge and experience of working with and developing Desktop applications using Java Swing and JavaFX. I have experience in developing applications for Mac, Windows as well as Linux. CLOUD INFRASTRUCTURE DEVELOPMENT - • 9x AWS Certified and "Microsoft Certified" Azure Solutions Architect Expert. • Extensive experience with using Docker, Kubernetes, Terraform. • Dockerisation and Orchestration, automating CI/CD Pipelines, VPN Setup, Monitoring and Logging, Cloud Cost Optimisation are my Forte. • Active user of AWS and Azure and excellent in picking cost-effective and secure solutions using these platforms. OTHER PROFICIENCIES - • Skilled in SQL as well as NoSQL programming. - Relational Databases - Postgres, MySQL, SQL Server, Oracle and DB2. - Non-Relational databases - MongoDB, DynamoDB • Skilled with ElasticSearch and Redis SOFT SKILLS – • Individualistic personality – who likes to find solutions. • Strong work ethic - my past work can vouch for this. • Positive attitude- comes in handy, while solving complex problems. • Excellent command over English language. • Excellent Communication skills. • Believes in Team work and joint efforts - can mingle into your current team easily. • Leadership skills - can lead and take up responsibility, even in difficult situations. • Highly dedicated personality - I don’t get bogged down by hiccups, and work to sail my way through them. As I am working in a highly dynamic field, so I keep updating myself with latest trends and developments in the field of software development, thus ensuring HIGH VALUE WORK for my clients. My technical capabilities, hardworking nature and past record of providing value to my clients can be vouched by client reviews on my profile. Thanks & Cheers!
Eric K.
Top Rated
$25/hr
93% Job Success
$4K+ earned
Available Now
Swing Java PHP Node.js React Web Development Flutter JavaFX Next.js iOS Development Kotlin Native App Development Swift Android App Development React Native
Are you looking for a skilled backend architect to enhance your project into a seamless and efficient digital masterpiece? Your search ends here! With my expertise as a Java and Spring Boot developer, I bring a wealth of knowledge and experience to the table. I have a proven track record in designing, developing, and optimising backend systems, dedicated to delivering high-performance solutions that scale effortlessly as your business grows. MY SKILLS: ✅ Serverless: Firebase Cloud Functions, Lambda, API Gateway. etc ✅ Postgres/MYSQL, MongoDB(Mongoose) ✅ Lettuce Java client, Redis, Redis Streams, Web Sockets, SSE(Server-Sent Events), RabbitMQ, Apache Kafka ✅ Docker, Kubernetes(k8s) ✅ AWS SNS, EC2, S3 ✅Rest, Graphql, Microservices
Kamal P.
Top Rated Plus
$80/hr
100% Job Success
Java Node.js Next.js AWS Amplify Spring Framework ExpressJS Amazon Web Services Redux GraphQL React AWS Lambda Vue.js Nuxt.js React Native TypeScript
TOP RATED PLUS AND TOP 3% OF PERFORMERS ON UPWORK TALENT COMMUNITY I have 10 years of IT industry experience and worked with 50+ long-term clients in my IT career and 40+ clients here on Upwork. I specialized and have very good experience with JavaScript, React, Node, Vue, AWS, and Java-related platforms. ✔ JavaScript: REACT FRAMEWORK: TypeScript, Redux, Next.js, GraphQL, Gatsby.js, ES6/7, Highcharts, Chart.js NODE FRAMEWORK: Express.js, REST APIs, Microservices, Nest.js, Sequelize VUE FRAMEWORK: Nuxt.js, Quasar, Vuex, Vuetify, Vue Router, Vue CLI ✔ PYTHON FRAMEWORK: Django, Flask, JSON, CherryPy ✔ Serverless/Cloud: AWS, GCP, Firebase, S3 Bucket, API Gateway, DynamoDB, Lambda, Amplify, EC2, ECS, AppSync, Cognito, Aurora, OAuth, RDS, SNS, CloudWatch, ETL, ELT, SQS, CloudFront ✔ Java: J2EE, Spring(Boot, MVC, Annotation, Security, Eureka, Data), JDBC, JMS, JSP, JSF, JPA, Swing, AWT, Java Beans, Thymeleaf, Hibernate ✔ Mobile: React Native, RN CLI, React Navigation, RN Debugger, RN Router ✔ Blockchain: NFT, Ethereum, Solidity, WazirX, MetaMask, Smart Contracts ✔ Database: MongoDB, PostgreSQL, MySQL, Oracle, MSSQL ✔ DevOps: Git, Bitbucket, DigitalOcean, Maven, Docker ✔ RTC: WebRTC, Socket.io, Twilio, Jitsi ✔ Testing: JEST, JUnit, Spring Test
Vipul J.
Top Rated Plus
$30/hr
100% Job Success
Java React Node.js Google Web Toolkit D3.js MongoDB Spring MVC Angular Hibernate Spring Boot Spring Framework MySQL AWS Lambda Core Java JavaFX
🚀 RESULTS-DRIVEN | 💼 MANAGING DIRECTOR | 🏆 16+ YEARS EXPERIENCE Hello, I am a seasoned software professional and Managing Director with a proven track record of delivering outstanding results. With over 16 years of experience in the IT industry, I bring a wealth of knowledge and expertise to the table. Here's why I could be the perfect fit for your needs: ✔️ You can count on prompt responses to all your messages. ✔️ Expect regular updates without the need for constant reminders. ✔️ I am dedicated to investing the necessary hours to complete tasks promptly. ✔️ Trustworthiness and approachability are my hallmarks. ✔️ I understand the importance of emotional intelligence as well as technical prowess. ✔️ I am well-versed in business acumen and thrive on adding immediate value. My skill set encompasses the following technologies, among others: ✅ Server-side - Java, Spring, Spring Boot, Servelets ✅ Web application development - Angular, React ✅ Databases - MySQL, PostgreSQL, Oracle, MongoDB, Firebase, DynamoDB ✅ ORM - Hibernate ✅ Testing frameworks - JUnit for Java ✅ Build and deploy - Docker, Jenkins ✅ Cloud computing - GCP, AWS(S3, EC2, Lambda) ✅ Search engines - Elasticsearch ✅ Messaging brokers - RabbitMQ, MQTT ✅ Agile Methodology - Scrum and Kanban using project management tools like Jira, Trello, Gitlab, WorkBench, Eclipse, Intellij Idea, Gradle I am passionate about delivering exceptional solutions and believe in driving projects to success. If you have a project in mind, let's connect! I would love to discuss how my expertise can contribute to your goals.
WebOsmotic Private Limited
Associated with
WebOsmotic Private Limited
$300K+
earned
Max U.
Top Rated Plus
$80/hr
100% Job Success
Available Now
Java Python JavaScript SQL Kotlin J2EE Spring Boot C++ RESTful API Node.js Angular React Web Application Amazon Web Services
As a passionate software developer based in California, I've always been drawn to the dynamic world of web and software development. My journey has led me to specialize in both coding and managing websites with WordPress, significantly expanding my portfolio. I thrive in environments that challenge my adaptability and problem-solving skills, whether working solo or collaborating with teams. I take pride in my ability to dive into complex projects, guiding them from conception to launch. My technical background is diverse, spanning the creation of large-scale applications designed for client interaction to implementing cutting-edge, open-source technologies that push the boundaries of innovation. Currently, I am focused on deepening my knowledge and skills in web development, data visualization, and game/engine development to enhance my visibility in the industry. My toolset includes Java, J2EE, Spring Technologies, and I'm equally proficient in frontend and backend development with technologies like PHP, Node.js, and modern frameworks such as React, Vue.js, and Angular. Effective communication is key to my workflow, ensuring clear and productive interactions with both technical and non-technical colleagues. I am naturally inquisitive and quick to adapt, always eager to explore new technologies and tackle the next challenge. My approach to projects is methodical and efficient, which allows me to exceed expectations and meet deadlines consistently. Areas of Expertise: Programming Languages: Java, J2EE, Spring: Deep expertise in building robust backend applications. PHP, Node.js: Skilled in dynamic server-side development. JavaScript (Angular, React, Vue.js): Proficient in creating interactive and responsive client-side interfaces. Python: Proficient in Python programming, emphasizing automation, data analysis, and backend solutions. Web Development: Skilled in a broad range of web development techniques and technologies, catering to both frontend and backend needs. Others: C, C++, RESTful and SOAP APIs, SQL, Hibernate, Maven, Gradle, Microservices. Web Development: WordPress: Advanced experience in developing and managing websites, enhancing user experience and site functionality. Full Stack Development: Comprehensive ability to handle both frontend visuals and backend functionality seamlessly. Soft Skills: Communication: Excel at articulating project goals and technical details clearly, ensuring all team members are aligned. Initiative and Agility: Motivated by new challenges, I approach projects with enthusiasm and a readiness to innovate. Time Management: My projects are not only completed within deadlines but also with a quality that often surpasses expectations. I'm excited about the future projects and opportunities that lie ahead, and I'm always looking for ways to contribute to and learn from the vibrant tech community here in California.
Patrick W.
Top Rated
$70/hr
100% Job Success
$2K+ earned
Java C++ Python iOS Development Objective-C Kotlin React Native Qt Framework macOS Flutter JavaScript JavaFX .NET Framework Bluetooth Node.js
I have extensive experience of software development, specialized in developing desktop (Linux, Windows, macOS), embedded and mobile (Android, iOS) apps - over half of that working remotely. - Mobile/IOS - Objective-C, Flutter, Swift , .NET/Maui ( CoreText, OpenGL ES, GLSL, Metal/MPS, StoreKit, XML, CoreGraphics, CoreData, CoreVideo, CoreMedia, CoreAudio, CoreLocation ). - C/C++, MFC, C# (Winform, WPF), Java/JavaFX/Swing, .NET, Python, Qt/QML. - Desktop app (Win, MacOS) , low level kernel drivers - USB, Printer, Scanner, Ethernet drivers. - Android app (Kotlin, Java). - Embedded system / IOT firmware - STM32 and ESP32, as well as communication protocols like LoRa, CANBus, OBD and I2C. - AI - Pytorch, Tensorflow, CoreML, tfLite, ONNX, TensorRT. - AR/VR, Unity, ARKit, ARCore. - Making software installers, updaters, licensing for macOS (OS X) / Windows / Linux: C++, NSIS. - SDKs and APIs development. - Third-party integrations for medical system, experience adhering to HIPPA regulations in apps, FHIR coding API calls, IEC/EN62304 standard. Self-disciplined, highly organized professional with the ability to thrive in high-paced environments. Ability to manage projects at once while working within strict deadlines and maintaining professionalism. Outstanding presentation and communication skills, and works exceptionally well within a team environment and individually. Superior analytical, time management, collaboration and problem-solving skills.
$25/hr
$2K+ earned
Available Now
Java MySQL Jakarta Server Pages Business Process Model & Notation UML Diagram Markdown GitHub Use Case Diagram
I am IT freelancer with strong software development background as I have been working since more than 10 years. I am specialized in Java/J2EE/PHP/Android with hands on knowledge in designing & implementation of development processes. I love to design web applications using wordpress framework, Magento and Zend framework. I personally believe communication is vital part to run project successfully and I consider that I am very good communicator on all levels to handle it in efficient manner. I provide web services such as webscrapping/data scrapping, integrations- payment,map, social sites,email etc., developing games, different tools. Expertise in following soft skills.. Technologies: Core Java, SpringBoot, Kubernetes, PHP-Wordpress,Joomla, Magento,Smarty, Zend,JDBC, JSF, Ice-faces, EJB 3.0, Spring, GWT , Oracle, Mybatis, Hibernate, Perl,Python. Development and Reporting tools: Netbeans ,Eclipse 3.1, Intellij, Rational Software Analyzer and Architect, SVN, Maven, JIRA, Sonar etc Web Technologies: JSF, Icefaces, prettyfaces, GWT
$14/hr
$2K+ earned
JavaScript Python DevOps Spring Boot Relational Database Android App Development Spring MVC Linux NoSQL Database Artificial Intelligence Machine Learning Flask Slack Internet of Things System Analysis Software Development SQL Programming
Summary: Experienced Software Engineer with a strong background in full-stack software development. Proficient in Java, with expertise in Swing, Struts, SpringMVC, and Spring Boot along with Spring Securities. Skilled in Python, with hands-on experience in Flask, Django, and AI/ML technologies. Adept at designing, developing, and deploying robust software solutions to meet diverse project requirements. Proven ability to work effectively in cross-functional teams and deliver high-quality software products. Works: # Gamenic Nalamiz: - Worked as a Software Engineer in Gamenic Nalamiz for a Japanese international client. Design, implement, and deliver the Solution of an Existing System related to the Health Sector, Management Software, and AI and Machine learning Projects. - Break down complex problems into elegant technical solutions to intelligently solve problems. - Worked in Struts, Mysql, PostgreSQL, Apache Tomcat, Java7, Javascript, Jquery, Angularjs, HTML, CSS, Sass, JSP and Servlets, and Java8 in the Management System. - Worked in Spring-MVC, MySQL, Spring-data, Apache, Java8, Javascript, Jquery, Angularjs, HTML, CSS, Sas, JSP Servlets, and others for Health Related Applications. - Python: AI and Machine Learning Projects like Water Drainage Management AI using Tensorflow, Keras, Google Collab, Visualisation tools, LSTM, Multi LSTM for Forecasting, and others. - For Watermark Detection AI Used custom Pytorch code, AWS Custom label detection, Google Custom Label Detection, RapidAPI, and others for watermark detection based on Python and Flask. - OCR Project: Regarding text detection used the PyTorch model and custom coding for detecting text from images and aligning as per their predefined format for menu creation for the Food Industry. - Experience working with software tools (compilers, debuggers, IDEs, and test tools, GitHub, Redmine, GitHub Projects, RWS, Manic Time, Remmina, etc.) - Research into LSTM, Imitation Learning, GAIL, and Others for Tasks like Forecasting, Forecasting Improvement, etc. - Documentation and presentation into a proper format of completed or Research Task. # Eaglerain Technologies: - Eaglerain Technologies deals with projects regarding Commerce, Management Systems, etc. Worked in a company as a junior Java developer where my responsibility was to design and develop code as per the requirements list given. - Worked in Spring-MVC, Springboot, Spring Security, JWT Authentication, Spring-data, Monodb, and MySQL along with testing and validation. - Worked in Front-end sections like JavaScript: J query, Angular JS, React JS, and others. CI/CD, deployment, and documenting are other key aspect that I worked on in this organization. GitHub, Trello, Skype, Linux, Postman, Deployment tools. # Freelancing Task - Has Completed 10 WordPress Websites for local and international clients along with government organisations. - UI/UX Design, Development along with Deployment and documentation using Custom Coding, Elementor, Elementor Addons, Contact-form 7, SEO Tools, Rest-API Consume and Post, etc. - Design, Develop, and Deploy Software and Applications like Web, Android, and Desktop Applications. - Work with Technology Component Like Java: Spring boot, Android, JavaScript || WordPress || MySQL || AWS
Conor M.
Top Rated Plus
$59/hr
100% Job Success
$1M+ earned
Available Now
Offers Consultations
Java iOS Development iPad App Development Web Application Android App Development iOS Android Apple Xcode Firebase Realtime Database Swift Objective-C PHP Kotlin Mobile App Development Front-End Development
✅ Over 9 Years iOS and Android App Development Experience including Admin Portal and Customer Facing Website Development. Expert in Swift/Objective-C/Kotlin/Java/React Native/Flutter/PHP programming. Analysis of business cases - software design and specifications, end to end development, testing and maintenance work. Experience in Mobile Development(iOS,Android), Backend Development, Test and Process Automation and Mobile App Management and thrive to learn more. Extensive experience in Java, Swift (SwiftUI and UIKit), Objective-C, Kotlin, PHP, React Native, Flutter, Python, Node.js, Rust, Go, SQL, C#, HTML, Javascript, Bootstrap and more. I am experienced in using a variety of frameworks/libraries/APIs including OpenAPI - ChatGPT, Twilio, Firebase, Agora.io, Branch.io, Braintree, Stripe, Mixpanel, OneSignal, Sendgrid, Bunny.net, Img.ly, AWS Transcribe API, SwiftUI, UIKit, AVKit, PushKit, Alamofire, SVProgressHUD, MapKit, Google Place/Map API, SDWebImage, Kingfisher, Hero, SwiftyStoreKit, VisionKit, Lottie and more. I can make both iOS and Android apps alongside admin portal implementations from scratch and have already developed more than 70 mobile applications. Also able to include brand and logo designs as well as customer facing websites for your business!
Himanshu M.
Top Rated Plus
$22/hr
97% Job Success
Offers Consultations
Java Objective-C Swift Node.js Firebase Realtime Database Xamarin iOS Android Flutter React Native Kotlin Front-End Development Game Development Google Maps API Angular 4
***✅ Top Rated Plus Freelancer (endorsed by Upwork) Need help with mobile app and web app development? Fill free to contact me any time for your project! Click the "Hire Me!" Button on my profile. Over the last 9+ years of Xamarin (Xamarin.Forms, Xamarin.iOS and Xamarin.Android) Experience, I have developed a wide range of mobile applications for smartphones, tablets. I have been spending every spare minute writing code for the iPhone and Android as well and learning everything on mobile application development. I'm mainly interested in mobile app development but I'm able to handle cross-client development including backend/API and web application. ******** My skills ********* ✅ Xamarin app development (C#, Native, Forms, Android, iOS, Telerik SDK) ✅ Program language: C#, .Net ✅ Android app development (Java, Kotlin, Google Play Store) ✅ IOS app development (Swift, Objective-C, App Store) ✅ Database (SQLite, SQL Server, MySQL, Firestore) ✅ 3rd Party API Integration (Facebook, Twitter, Vimeo, Pinterest, Youtube, Google+ API) ✅ Google maps, GPS, Current Location, Google Places, Markers ✅ Payment System (Stripe, Paypal, PayTM, BrainTree, WePay, Credit Card, PaypalHere, iZettle, Vantiv, Tyro, Mint, and AssemblyPayment) ✅ Pixel perfect, Interactive and complex UI ✅ MVVM Pattern and MVVM Framework like Prism, MVVMLight, and MVVMCross ✅ Local SQLite DB integration and EntityFramework Core with SQLite ✅ Flight mode safe application - Online-Offline data synchronisation in background. ✅ Hardware integration -Barcode scanner. which are connected though the LAN, WiFi & Bluetooth. ✅ Convert Native libraries/SDK into C# ✅ API integration (SOAP, REST, JSON, XML, XMLRPC) ✅ Push Notification (Local and cloud - APNS, Firebase) ✅ Real-Time communication integration - Firebase, PubNub, SignalR and many more ✅ Chatting Implementation & Integration. ✅ Social App Integration (Google, Facebook, LinkedIn, Twitter) ✅ Barcode Scanning & Generating ✅ QR Code Scanning & Generating ✅ MagStripe Reader (Swipe card) & NFC Reader ✅ Map Integration ✅ Deep linking using Firebase Dynamiclink ✅ Google AdMob integration ✅ Parse API integration. ✅ Unit Testing, Sanity Testing, Integration Testing ✅ Azure, Firebase, AWS ✅ Github, AzureDevOps, AppCenter, JIRA, Bitbucket ✅ Clean Code ✅ Apple and Google In-App purchase integration ✅ Publish app on AppStore and PlayStore ****** Stack of Web Technologies ******* ✅ Knowledge of Frameworks: PHP- Laravel ✅ Knowledge of HTML, Ajax, XML, JSON, CSS ✅ Knowledge of JS libraries: JQuery, JQuery UI, YUI, etc. ✅ Knowledge of template engines: Twig, Smarty ✅ Knowledge of the Bootstrap framework ✅ Knowledge of CSS preprocessors: SASS, LESS ✅ Skills with databases: MySQL, Oracle, MS SQL, Firebird, PostgreSQL ✅ Knowledge of NoSQL: MongoDB, Redis, Memcached ✅ Knowledge of OOP, SOLID and MVC concepts ✅ Skills with VCS: Git, SVN ✅ Skills with the Composer dependency manager ✅ Experience with server side JS: Node.js, Express.js, WebSockets ✅ Experience with virtual machines configuration with Vagrant and Puppet ✅ Experience with payment gateways: Pay_Pal, Authorize.Net, Solid Payments ✅ Skills with social networks API: Facebook, Twitter, Instagram, OK, VK ✅ Skills with GIS: Google Maps API, Yandex Maps API, VNetGIS ✅ Knowledge of MaxMind API, minFraud API ✅ Skills with the Photoshop graphics editor ✅ Basic knowledge of HTML Canvas and Flash What is the difference between other developers and me, and why should you hire me? ✅ Develop mobile app by following Apple, Google, and Windows development guideline. ✅ Always reply quickly and give my 100% dedication to your project to make it live. ✅ 100% Job Success ✅ 100% Client Satisfaction
DroidFox Solutions
Associated with
DroidFox Solutions
$60K+
earned