💼 𝟏𝟓+ 𝐘𝐄𝐀𝐑𝐒 𝐎𝐅 𝐄𝐗𝐏𝐄𝐑𝐈𝐄𝐍𝐂𝐄 🥇 TOP RATED PLUS Freelancer 🏆📈 𝟏𝟎𝟎% 𝐉𝐎𝐁 𝐒𝐔𝐂𝐂𝐄𝐒𝐒 𝐑𝐀𝐓𝐄 💰💱 𝐌𝐎𝐑𝐄 𝐓𝐇𝐀𝐍 𝟐𝟎𝟎𝐊 𝐔𝐒𝐃 𝐁𝐈𝐋𝐋𝐈𝐍𝐆 🎨 𝐀𝐖𝐒 𝐂𝐄𝐑𝐓𝐈𝐅𝐈𝐄𝐃 𝐒𝐎𝐋𝐔𝐓𝐈𝐎𝐍 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓 🎯 𝐌𝐘 𝐀𝐂𝐇𝐈𝐄𝐕𝐄𝐌𝐄𝐍𝐓𝐒 🎯 ➤ 𝐌𝐞𝐫𝐢𝐭 𝐡𝐨𝐥𝐝𝐞𝐫 𝐝𝐮𝐫𝐢𝐧𝐠 𝐦𝐲 𝐚𝐜𝐚𝐝𝐞𝐦𝐢𝐜𝐬 ➤ 𝐖𝐨𝐧 𝐬𝐞𝐯𝐞𝐫𝐚𝐥 𝐚𝐰𝐚𝐫𝐝𝐬 𝐝𝐮𝐫𝐢𝐧𝐠 𝐦𝐲 𝐜𝐚𝐫𝐞𝐞𝐫 ➤ 𝟑𝟎+ 𝐑𝐞𝐜𝐨𝐦𝐦𝐞𝐧𝐝𝐚𝐭𝐢𝐨𝐧𝐬 𝐟𝐨𝐫 𝐦𝐲 𝐰𝐨𝐫𝐤 𝐨𝐯𝐞𝐫 𝐋𝐢𝐧𝐤𝐞𝐝𝐈𝐧 ➤ 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐞𝐝 𝟓𝟎+ 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬 𝐟𝐫𝐨𝐦 𝐬𝐜𝐫𝐚𝐭𝐜𝐡 𝐛𝐲 𝐧𝐨𝐰 ✔ 𝐒𝐄𝐑𝐕𝐈𝐂𝐄𝐒 𝐈 𝐎𝐅𝐅𝐄𝐑: ◉ Design, Architecture & Deployment of Web & Mobile Applications (On-premise & Cloud) ◉ Front-end and Back-end Development ◉ Web and Mobile Application Development ◉ On-going Maintenance ◉ Automation Testing ◉ Consulting ◉ DevOps ◉ SEO ✔ 𝐃𝐎𝐌𝐀𝐈𝐍𝐒 𝐈 𝐇𝐀𝐕𝐄 𝐖𝐎𝐑𝐊𝐄𝐃 𝐎𝐍: ➤ eCommerce ➤ Finance ➤ Casino Application ➤ Recruitment ➤ Healthcare ➤ Video Streaming ➤ Data & File Analytics ➤ Data Governance ➤ Lead Generation/Mining Tools ➤ Order Management/Product Data Management ➤ CRM and Project Management Tools ➤ Geo-Spatial and GIS based System ➤ Reporting & Complex Report Creation using JasperReports ✔ 𝐀𝐁𝐎𝐔𝐓 𝐌𝐄: ◈ I am a software architect and developer who has passion to build products/platforms from scratch. ◈ My strong asset is my problem-solving skills and ability to work with diverse teams. ◈ I offer multiple and critical enterprise-class Java applications for companies wanting to build large-scale, distributed, and multi-leveled network applications with immense security. ◈ A team player and can very well with a remote team. I am open for the communication over Slack, Trello, Skype, and know how to work in an 𝐀𝐆𝐈𝐋𝐄 environment. ◈ I have great knowledge of building systems with search integration for Solr and ElasticSearch. ◈ I am a graduate and Post-graduate in Computer Science and Application. ✔𝐌𝐘 𝐀𝐑𝐄𝐀 𝐎𝐅 𝐄𝐗𝐏𝐄𝐑𝐓𝐈𝐒𝐄: ➤Java | Spring | SpringBoot | Hibernate | Grails | JDBC | XMLC | Servlet | AJAX | JavaFX | XML | Struts | XSLT | Spring EJB | Jasper | JSF | jQuery | GWT | Microservices | Web Start | Apache | Tomcat | JBoss | ✔ 𝐀𝐌𝐀𝐙𝐎𝐍 𝐖𝐄𝐁 𝐒𝐄𝐑𝐕𝐈𝐂𝐄𝐒 𝐌𝐀𝐍𝐀𝐆𝐄𝐌𝐄𝐍𝐓: ➤VPC | AWS EC2 | Amazon RDS | AWS S3 | AWS CloudFront | Elastic Load Balancer | IAM | Route53 | WAF | AWS Lambda (Python) | RedShift | Athena | Glue | S3 Data Lake | SES | SNS | Glacier | Amazon Cognito | Elastic BeanStalk | CloudFormation | ElasticCache | CloudWatch (Monitoring, Alerts, Logs) | Inspector | CodeCommit | CodePipeline | CodeDeploy | Trusted Advisor | Guard Duty | System Manager | Serverless | Amazon ECS | AWS Autoscaling | Amazon EMR | AWS Data Pipeline | AWS Kibana | Amazon DynamoDB | ✔ 𝐎𝐓𝐇𝐄𝐑 𝐓𝐄𝐂𝐇𝐍𝐎𝐋𝐎𝐆𝐈𝐄𝐒 𝐓𝐇𝐀𝐓 𝐈 𝐖𝐎𝐑𝐊 𝐎𝐍: ➤React | Redux | Blueprint | npm | Babel | Browserify | TypeScript | Parcel.js | Electron | Webpack | Puppeteer | Material UI | Firebase | Node.js | Drupal | Angular | Selenium | Salesforce | Vue.js | Ext JS | Puppet | Chef | Jenkins | Docker | Apache Solr | Apache Lucene | Microsoft Azure | Kibana | SharePoint | Python | Oauth | Auth0 | REST | Groovy on Grails | MySQL | MEAN Stack | MERN Stack | DT Search | Bootstrap | Salesforce Lightning | Appfuse | PySpark | IOT | Redis | RabbitMQ | Docker | Ansible | OpenShift | OnsenUI | Prime React | Grommet | React Suite | React DND | React INTL | React Router | React Black | ReactStrap | ReactDesktop | ReactVR | Salesforce Appexchange | Semantic UI | Salesforce Apex | Salesforce Pardot | Mob X | GraphQL | 𝐇𝐚𝐯𝐢𝐧𝐠 𝐩𝐫𝐞𝐯𝐢𝐨𝐮𝐬𝐥𝐲 𝐰𝐨𝐫𝐤𝐞𝐝 𝐰𝐢𝐭𝐡 𝐒𝐦𝐚𝐥𝐥 🌱, 𝐌𝐢𝐝-𝐒𝐜𝐚𝐥𝐞 🌴 𝐚𝐧𝐝 𝐋𝐚𝐫𝐠𝐞 𝐛𝐫𝐚𝐧𝐝𝐬 🌲, 𝐈 𝐚𝐦 𝐩𝐫𝐨𝐟𝐨𝐮𝐧𝐝𝐥𝐲 𝐬𝐤𝐢𝐥𝐥𝐞𝐝 𝐢𝐧 𝐚𝐜𝐡𝐢𝐞𝐯𝐢𝐧𝐠 𝐩𝐞𝐫𝐟𝐞𝐜𝐭𝐢𝐨𝐧 𝐚𝐦𝐨𝐧𝐠 𝐭𝐡𝐞 𝐯𝐚𝐬𝐭 𝐚𝐫𝐫𝐚𝐲 𝐨𝐟 𝐢𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬. ✅

As a US-based senior software engineer and architect, I specialize in developing distributed scalable systems tailored for search, analytics, and streaming applications. My expertise spans over 25 projects, serving clients in the US, Europe, and India, delivering software solutions leveraging Apache Kafka, Flink, Lucene, and Solr. I have presented at over 10 open source conferences worldwide. With a 100% job success rate, I am eager to embrace the next challenge.

Overall 12+ years of enterprise application development experience with Camunda BPM, Flowable BPM, Activiti BPM, JBPM, Drools and ECM, Business process management (BPM), Spring boot, Rest API, Spring Security, Hibernate, JPA, Angular, AWS services, Spring boot micro services. BPM (Business process management platform) -Camunda BPM -Camunda Zeebe -Flowable BPM -JBPM -Activiti BPM DevOps -Docker -Kubernetes -Amazone ECS Integration Framework -Apache Camel Search engines -Elasticsearch -Apache Solr -Apache Lucene Reporting tools -Jasper Reports IAM (Identity and access management) tools Keycloak(Authentication, Authorization, SSO, SPI, Social Logins etc.) We are having strong front end developers team having 5-12 years of experience. -Angular -ReactJs -NodeJs Payment Gateway Integration -Stripe -Paypal -Razorpay -Moneris UI/UX Designing -PSD to HTML -Web Designing -Adobe XD to HTML We deliver corporate trainings in -Camunda BPM -Flowable BPM -Activiti BPM -JBPM -Elastic Search

Top Rated developer and solution architect with 100% success record so far! I have around 20 years of experience working with cutting edge tools like Drupal (4.x to 11.x), WordPress, PHP, Zend Framework, Moodle, IOMAD, Ubercart, Drupal commerce, Apache SOLR, Google Search Appliance (GSA), Elasticsearch, Lucene Search, Drupal COD, Open Atrium, Opigno LMS, Magento, Shopify, Pantheon, Amazon AWS, EC2, Route 53, SES, S3, CloudWays, MS Azure, Memcache, Memchached, Varnish, Redis, Full LAMP Stack, HTML5 / CSS3, Bootstrap, MailChimp, Zoho, DMARC, DKIM, SPF, Canva, eTapestry API and so on, and built web applications ranging from corporate websites to high traffic social network portals. I have also extensively worked on handling security breaches and performance hiccups at both server as well as application levels. To know more about me and my professional experience, kindly visit my personal cum blog site as well along with my Upwork profile. Additional activities: 1. Technical and user reviewer of Drupal books with Packt Publishing 2. Author of technical books including 'Administrating Solr' , 'Apache Solr High Performance' , 'Open Source Log Analysis with Elasticsearch' and 'Node.js Essentials'. 3. Active member of Drupal association 4. Active contributor to Drupal initiatives especially Drupal 8 5. Technical blog writing 6. Organizer of Drupal events, meetups, camps, etc held at Mumbai and Pune, India 7. Co-organizer of DrupalCon Asia 2016 8. Speaker at Drupal meetups, events, camps, etc held at Mumbai and Pune India. 9. Corporate Trainer (Drupal, Moodle and GSA) 10. Author at 'Sitepoint.com' 11. Author at 'zyxware.com'

Welcome to my profile! I am a seasoned software and web application developer with over 18 years of experience in the industry. My expertise is in ASP.NET, ASP.Net Core, .Net 6/7, Blazor, C#, Entity Framework, Web API, LINQ, SQL Server, Python, and jQuery. Throughout my career, I have developed a deep understanding of a range of technologies, and I am always eager to learn more. I have worked with PostgreSQL, MySQL, Lucene, and Apache Solr, and I am confident in my ability to adapt to new tools and frameworks quickly. At the heart of my work is a commitment to customer satisfaction. I understand that my clients have unique needs, and I take the time to listen carefully to their requirements and concerns. I am dedicated to maintaining my "Top Rated" and "100% Job Success" rankings, and I believe that anything less than full and complete customer satisfaction is unacceptable. Whether you need help with software development, web application development, or any other related project, I am here to help. Please don't hesitate to get in touch if you have any questions or if you'd like to discuss a potential collaboration. I look forward to hearing from you!

✅ EXPERT-VETTED BY UPWORK The Upwork Expert-Vetted program identifies the top 1% of talent on the platform. All Expert-Vetted freelancers undergo a rigorous screening process. WE'LL GET YOUR PROJECT DONE THE RIGHT WAY! Expert Full Stack Developer • Over 15 Years Experience • .NET • JavaScript • PHP • API Integration • E-Commerce • CMS (Content Management Systems) • Wordpress Optimization • AI / ChatGPT Integration • More (See Below) Dear Potential Client, Would you like to get your project done the right way: quickly, cost effectively and correct – the first time around? I am a Senior Developer / Technologist with over 15 years of experience in development, architecture and managerial roles. A Yale-educated Computer Scientist with a strong background in Mathematics, for many years I held the position of Senior Developer at the March of Dimes, an internationally known (and historically significant) non-profit organization based in the New York City area. There, I focused on complicated full-stack development tasks in the .NET, JavaScript, PHP and other technology stacks, as well as management roles, including mentoring, carrying out detailed departmental planning, authoring white papers and helping set the overall technical direction of the organization. In recent years, I have switched my focus to independent technology projects, through my consulting firm, RMV & Co., LLC. In addition to my technical skills, I am known for my top-notch communication skills, both verbal and written. For this reason, clients often choose my services when they are looking not just for a seasoned technologist, but for someone whom they can count on to have clear, concise and precise communication with during the entire lifecycle of their projects, from the initial consultation to planning, development, testing and follow-up after the project has been completed. I offer free consultations for all potential clients. Feel free to text me to set up a meeting. Wishing you great success, Michael R. Klosner, Tiger Technology Services –––––––––––––––––––––––––––––––––––- Highlighted technological experience: ➠ .NET Framework / .NET Core ➠ JavaScript (JS) Full Stack, including Node.js, React.js, Express.js, more ➠ Artificial Intelligence (AI), Machine Learning (ML), AI Chatbot (ChatGPT API) integration ➠ Apache Lucene / SOLR, Full-Text Search Engines ➠ Matlab, R (Statistics) / RStudio ➠ SQL (SQL Server, MySQL), NoSQL (MongoDB) ➠ Entity Framework ➠ Angular, TypeScript, jQuery ➠ eCommerce integration: Amazon Payments, Paypal, Shopify, Stripe ➠ XML, XSLT, JSON, AJAX, RESTful APIs ➠ C#, C++, C, ASP.NET, MVC ➠ Java / Spring, PHP ➠ Python ➠ HTML 5 / CSS 3 ➠ Content Management Systems (CMS) ➠ OpenText CMS / OpenText Delivery Server ➠ Wordpress ➠ Jira, Git, Github ➠ SDLC –––––––––––––––––––––––––––––––––––- Communications skills include but are not limited to: ➠ Explaining highly technical issues to non-technical individuals and groups in a straightforward and engaging manner. ➠ Justifying budgets and timelines from a technical point of view. ➠ Managing developers as well as non-technical staff, and serving as technical team lead. ➠ Composing and presenting technical policy papers, roadmaps and white papers. ➠ Representing companies (virtually or in person) at shareholder meetings, symposiums, technology expos and other gatherings. –––––––––––––––––––––––––––––––––––- Background & languages: I was born in the United States (New York). I have proficiency in the following languages: ➠ English (Native tongue) ➠ Hebrew (Completely fluent) ➠ Spanish (Conversational) ➠ Portuguese (Conversational) –––––––––––––––––––––––––––––––––––- Work philosophy: I approach each project as if it were a work of art. From initial exploration of the problem, to design of its solution, to execution and testing, my philosophy is that everything should fit together as a well thought-out, structured, and — dare I say — beautiful whole. If you're looking for a seasoned technologist who has worked in a vast variety of technologies, who picks up new technologies quickly and easily, and who approaches problems and their solutions in a structured, well thought-out manner, resulting in maintainable and scalable long-term solutions, then I am the right person for you. –––––––––––––––––––––––––––––––––––- And, just to help you get a better sense of who I am on a personal level, here are some of my hobbies: ➠ Skydiving (I hold a USPA C license and have completed approximately 500 jumps) ➠ Aviation (FAA Private Pilot’s License granted in January, 2017) ➠ Sea Kayaking ➠ Hiking the Appalachian Trail ➠ Motorcycling ➠ Marine Biology (M.Sc. in Marine Biology) ➠ Studying and Teaching Ancient Languages –––––––––––––––––––––––––––––––––––- Let's talk! Message me to set up a call to determine if it's a good match; and if so, let's collaborate to get your project done – the right way. Wishing you a successful and fulfilling day, Michael R. Klosner

Key Skills: • Total 18 Years of experience in Software Development using Java J2EE(Spring, Spring Boot, Spring Security, Spring Cloud, Spring SOAP, Micronaut, Hibernate, JPA, Struts, EJB, JMS, JSF, GWT, ActiveMQ, Apache CAMEL, Apache Kafka, Apache Pulsar, Microservices ) • J2EE(Spring, Spring Boot, Spring Security,Spring Cloud, Micronaut, Hibernate, JPA, Struts, EJB, JMS, JSF, GWT, ActiveMQ, Apache CAMEL,Apache Kafka, Apache Pulsar, Microservices ) • Serverless frameworks (Azure Functions, Durable Functions, AWS Lambda, IBM Openwhisk) • Extensive working knowlegde of Cloud Infrastructure and Marketplace applications(Azure -Function Apps, Durable Fucntions, APIM, Azure Service Bus, Key Vault, Azure EventHub, AWS - Lambda Functions, AWS API Gateway, S3, AWS SQS, IBM Cloud, GraalVM). • Good experience of working with Data Streaming platforms like Apache Pulsar and Apache Kafka. • Distributed Edge Computing and have good experience in working with systems of high scale. • Good working experience of integrating the systems with AI Bots. • Worked on Auth0, Okta and integrating many systems using Auth0 • Worked on Siddi and Complex Event Processing (CEP Systems) • Containers (Docker, Kubernetes, Azure AKS) • Extensively worked on Performance Testing using various tools like Apache Pulsar Perf, Jmeter, YCSB and getting Benchmark numbers. • Search Engine (Solr, Lucene, Elastic Search) • Expertise in development of Plug-ins, Widgets, Jive Apps, Web Services, Themes on Jive Platform and well versed with Jive SBS 4.5, 5.0, 6.0, 7.0, 8.0, jive-n, jive-x platforms • Expertise in using build tools like Maven, Ant, Jenkins, Cruise Control and setting up CI/CD pipelines • Expertise in writing/consuming Web Services (REST and SOAP) • ETL Tools (Talend Open Studio and ETL Works). Good working knowledge of Talend Open Studio and cloud based ETLWorks and writing and integrating jobs with other systems like Salesforce, Mulesoft, Sharepoint, MercuryGate, Ring Central, Twilio, SendinBlue, DAT, BlueYonder, 123Loadboard, DAT etc and other Enterprise Web applications. • Expertise in deploying web applications on Windows/Linux/Unix servers • Good Hands on experience in managing and configure Servers like Tomcat,Apache, SUN ONE AS – 8.1, WEBLOGIC 8.1, Glassfish v3 and 4 • Certified as SCJP(Sun Certified Java Professional) • Certified as SCWCD(Sun Certified Web Component Developer) Professional • Certified MongoDB developer from MongoDB University Over the last few years I have worked with global clients like ICOMAI, Albertsons, UST-Global, British American Tobacco(BAT), Grail Research, Sony, Hitachi, Morgan Stanley, Bank of New York and have gained considerable experience in architecting and developing highly scalable Enteprise web and data solutions.

✔Expert in Java ✔5000+ Hrs worked on Upwork ✔16+yrs Experience ✔Problem Solver Sun Certified Java Programmer with 16+ Years of Professional Experience in Enterprise Application Development. I have excellent Coding Skills and follow Industry Standards to code Scalable Applications that can be deployed on Cloud or On-Premises or Container or Kubernetes or Hybrid Platform. ✅I specialize extensively in Java: ✓ Back-End Frameworks: Spring Boot, Spring, Hibernate, JPA, JSP, Servlets, Java ✓ Front-End Frameworks: Angular, ReactJS, JQuery, and JavaScript ✓ Other Frameworks: Apache Storm, Hadoop, JPPF, ElasticSearch, Hazelcast, Spring Cloud ✓ Cloud Computing: AWS, Google Cloud, Digital Ocean, and Heroku ✓ Security: OAuth2, OpenID Connect, JWT, LDAP, X.509, Kerberos, Social Logins, SSO ✓ Databases: MS SQL, MySQL, Oracle, PostgreSQL, MongoDB, HBase ✓ CI/CD and monitoring: CI/CD using Gitlab, CI using Jenkins and Bamboo, Kubernetes ✓ Agile Methodology: Scrum and Kanban using project management tools like Jira, Pivotal Tracker, Gitlab, etc. ✅My core competence lies in providing End-to-End Solutions to Enterprise Application Development for the Financial, Marine, and Telecom domains. ✅ How can I help you ✓ I can handle your all end-to-end requirements analysis, development & delivery so you can focus on your sales & operations ✓ I can extend/develop your MVP product to production-ready ✓ I can develop products from scratch until the final delivery and support with maintained code quality and proper code coverage ✓ I can choose the right technology stack and tools for your solution based on real needs and can save costs ✓ I can manage the team, do code reviews, handle CI/CD and releases, support live systems ✓ I can understand and implement the most difficult parts of software systems ✅ Expert Areas ✓ Java-based back-end frameworks like Spring Modules (Spring MVC, Spring Security, Spring AOP, Spring Rest, Spring Data/JPA) ✓ Microservice & Cloud native architecture for developing SaaS-based system ✓ RDBMS (MySQL, PostgreSQL, Oracle) ✓ Docker, Kubernetes, OpenId, SSO, SAML, ✓ Graph/Document Databases MongoDB and DynamoDB ✓ Microservices-based architecture implementation with Spring boot, Spring Integration, and Apache Camel ✓ AWS experience with Serverless, RDS, SQS, SNS, SES, S3, VPC, Cloudformation, ECS, Lambda, Cognito and EC2 ✓ AWS API implementation experience ✓ Queue-based implementations with RabbitMQ, ActiveMQ, SQS, and SNS ✓ Test-driven development implementation with unit and integration test cases with JUnit/TestNG + Mockito + Spring ✓ Database integration frameworks like JDBC/Hibernate/Sprint Data (ORM) and Spring Mongo ✓ REST-based Web Service/API implementation with Spring REST ✓ CI/CD implementation with (Bamboo + Jenkins + Maven + Nexus + GIT(Bitbucket/Gitlab/Github) ✓ Payment Gateways implementations like Stripe with Debit/Credit Card Integration ✓ Solr/Lucene/ElasticSearch search engine integration ✓ Agile Methodology ✓ Experience with implementing very complex queries with MySQL DB ✓ Java-based Servers Tomcat/JBoss ✓ Repositories like Git, SVN

Back-end engineer with a lifelong passion for software, databases, and scalable distributed solutions. Over the 12+ years, I have developed or contributed to nearly 50+ projects in a variety of work like developing from stretch and scaled up to 1M+ user base, scaled from 1000 req/day to 1M req/day, and other technical works. I have worked with clients in various domains like healthcare, fintech, ed-tech, real estate, government agencies, and the non-profit sector, and have worked for companies such as Upwork (yes I worked for Upwork itself, a listed company on the NASDAQ exchange), LetsheGo (a listed company in Botswana Stock Exchange), OCO global, and many more startup companies in the world. Do you like Upwork's Reports & Time tracking feature? I am one of those developers who built that :) ✅ How can I help you ✓ I can handle your all end-to-end requirements analysis, UX, development, testing & delivery so you can focus on your sales & operations ✓ I can extend/develop your MPV product to production-ready ✓ I can develop products from scratch until the final delivery and support with maintained code quality and proper code coverage ✓ I can maintain your currently live products in the most optimum way by keeping quality and customer experience at first place in mind and with the minimum team and can save your cost ✓ I can choose the right technology stack and tools for your solution based on real needs and can save costs ✓ I can manage the team, do code reviews, handle CI/CD and releases, support live systems ✓ I can understand and implement the most difficult parts of software systems at very large-scale platforms like Upwork, (I am one of the Upwork platform devs) ✅ Expert areas - Java based back-end frameworks like Spring Modules (Spring MVC, Spring Security, Spring AOP, Spring Rest, Spring Data/JPA) & ZK (Zkoss) - ECMS implementation with Alfresco Content Services 4.x, 5.x, 6.x and Alfresco Process Services (Activiti) - RDBMS (MySQL, PostgreSQL, Oracle) - Graph/Document Databases MongoDB and DynamoDB - Web Crawlers with all features - Microservices based architecture implementation with Spring boot, Spring Integration and Apache Camel - AWS experience with RDS, SQS, SNS, SES, S3, and EC2 Instances - AWS API implementation experience - Queue based implementations with ActiveMQ/SQS - Test driven development implementation with unit and integration test cases with Junit/TestNG + Mockito + Spring - Database integration frameworks like JDBC/Hibernate/Sprint Data (ORM) and Spring Mongo - REST based Web Service/API implementation with Spring REST - CI/CD implementation with (Bamboo + Jenkins + Maven + Nexus + GIT(Bitbucket/Gitlab/Github)) - Payment Gateways implementations like Paypal and Stripe with debit/credit card integration - Solr/Lucene/ElasticSearch search engine integration - Jasper Reports (with DynamicJasper as well) - Agile Methodology understanding all terminology - Experience with implementing very complex queries with MySQL db - Java based Servers Tomcat/JBoss - Repositories like Git, SVN, P4V(Perforce) ✅ What my clients says ⭐⭐⭐⭐⭐ "Vishal is best developer I have worked with till date. He is prompt responsive, an incredible problem solver, very professional, highly skilled and great team leader. He handles our portal continuous development including all project phases starting from requirement gathering(calls), task creation with all details, estimation, development, deployment on all environments, testing, creating wiki pages, choose right technology stack and AWS resources and manage tickets! He is handling dev team and also do development himself and supports everyone. Will certainly work with him again when we restart the project development! Highly recommended developer." 👤 Hugo Galicia ( CEO @ chicagodealvault.com ) ⭐⭐⭐⭐⭐ "It was a highly positive experience working with Vishal. He was conscientious, always doing his due diligence to clarify any uncertainties before starting work. He gives accurate estimates of effort/time required for work, and either delivers on time or early. Overall a very reliable and dependable worker. We hope to work together with him soon. Highly recommended!" 👤 Dominik Bieringer ( CEO @ Kandu ) ⭐⭐⭐⭐⭐ "Very experienced and diligent contractor" 👤 Abhijit Dhar ( VP - Technical Services @ Whitehat Virtual Technologies ) ⭐⭐⭐⭐⭐ "Vishal is an excellent java engineer, with great business logic, self-motivated, with deep technical knowledge. He jumped right in and understood the current project architecture with minimum KT and limited documentation. He is always eager to solve new issues. I highly recommend him and will definitely work with him again, if opportunity permits. A pleasure to work with" 👤 Chris Adams ( CEO @ eDataSource )

--------------------------------------------------------------------------------------------------- 🔰 𝟏𝟎𝟎% Projects Delivered. 100K + Billing 🔰 --------------------------------------------------------------------------------------------------- I have over 15 years of development and implementation experience on projects ranging from small departmental applications through complex enterprise solutions in multi-national corporate environments. My software and application expertise is very diverse and includes Java, J2EE, JSF, JSP/Servlets, and related frameworks and APIs including Spring, Hibernate, Solr, Elastic Search, Kibana, Grails and Groovy, Angular.js, Node.js, Jasper Reports, Amazon Cluster, Mongo DB, DynamoDB, Cognito, Serverless Architecture, Amazon API Gateway, Amazon Lambda, Amazon S3, Redshift, Kinesis, PySpark, Python, Django, Redis, Chargify, Bigdata, Hadoop, Spark, Scala, Machine Learning, Pig, Hive, Ansible, Docker, DevOps, etc. I am not only proficient in technical skill but also possess great knowledge and experience in delivering a broad range of business solutions such as: - CRM - Change & Problem Management - Automotive Vehicle Tune Management - Order Management - Project Management - Warehouse Management - Incident Management - Help Desk - Health Care - Human Resources, etc. Beyond web and mobile application development, I am skilled in high-level requirements gathering, risk analysis, technical design analysis, application modeling, implementation planning, and support.