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4.7/5
based on 374 client reviews
  2. Development & IT Talent
  3. Back-End Developers
  4. (Current) JUnit Specialists
  • $25 hourly

    • 4.4/5
    • (48 jobs)
    A motivated and skilled software developer with more than five years of professional experience. Back-end technologies: - Spring-framework, spring-security - JPA/Hibernate + Spring-Data - REST, GraphQL, and WebServices (Spring-Boot) - Apache Kafka, Camel - SQL, MySQL, PostgreSQL, MariaDB, MongoDB - Maven/Gradle/Ant Front-end technologies: - Spring-MVC, Struts - template engines: Thymeleaf, JSP/JSTL, GSP, Freemarker, Jtwig, Velocity - JQuery and Bootstrap - HTML5, CSS3, JavaScript - Angular, React SDLC - Agile and Scrum programming methodology - TDD using JUnit, Mockito, Karma (for UI) - Eclipse, STS and Intellij IDEA - Git, SVN, and CVS code repositories - Maven, Ant, and Gradle build tools - Jenkins and Bamboo CI servers - Docker, Kubernetes - Bash scripting, Server Administration Cloud - Amazon cloud deployment using EC2 - Amazon file sharing S3 - Amazon cloud database using RDS - Amazon based messaging (SNS and SQS) - Google cloud platform - Heroku based could deployment - VPS setup and administration
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Agile Project Management
    Code Review
    Jira
    Bash Programming
    Hibernate
    Spring MVC
    Microservice
    Java Persistence API
    MongoDB
    Thymeleaf
    Java
    Spring Boot
    MySQL
  • $55 hourly

    • 5.0/5
    • (6 jobs)
    I am a senior Java/SpringBoot developer, working in complex enterprise software. Most used stack: SpringBoot, JEE, JSF, Angular, Primefaces, Icefaces, Hibernate, Maven, JBoss, Git, Jira, Openshift, AWS Following: Java best practices, SOLID clean code, TDD Certified Professional for Software Architecture, iSAQB CPSA Certification Oracle Certified Associate, Java SE 8 Programmer Professional Scrum Master I (PSM I) Bachelor and Master Degree in IT and Business, many courses taken in SW Development and Best Practices. Passionate about Bioinformatics and AI. My hobby is writing, creative or professional writing. I have published a book and won multiple international awards in short stories competitions. I am also an author at Baeldung, writing Java/Spring articles.
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Software Architecture & Design
    API
    Spring MVC
    JavaFX
    SQL
    Hibernate
    Spring Framework
    Apache Maven
    Oracle PLSQL
    Java Persistence API
    Spring Boot
    Git
  • $30 hourly

    • 4.6/5
    • (26 jobs)
    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.
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Distributed Computing
    SonarQube
    J2EE
    Performance Testing
    Microsoft Azure
    Web Service
    JSON
    Java
    API Integration
    Spring Boot
    Azure DevOps
    Docker
    Microservice
    Spring Batch
  • $35 hourly

    • 4.7/5
    • (47 jobs)
    ⭐ Top Rated Plus ⭐ 100% Job Success ⭐ 7000+ Upwork hours ⭐ 40+ Job's Successful Completed I am a Java professional with 10 years of experience. I have strong understanding and knowledge of the object-oriented approach, software engineering principles, concepts, and with practical knowledge on designing, building scalable applications with Monolith and micro-service model. I have grip on architectural design technique using the Domain-Driven Development approach (DDD), Test Driven Design(TDD). All these years i got chance to work on Financial, Healthcare, ERP, Customized CRMs, Order Management and Logistics solutions. My technology stack is : ✅ Back-End: Java, Spring Boot, Spring Security, MVC, Hibernate, JPA, JDBC, J2EE, Servlets, Web Services ✅ Front-End: Angular, HTML5, CSS3, JavaScript, JSF, JSP ✅ Middleware: Apache ActiveMQ, Kafka ✅ Cache: Apache Ignite, Redis ✅ Databases: RDBMS (MySql, Postgre SQL, MSSQL, Oracle), noSql (MongoDB)
    vsuc_fltilesrefresh_TrophyIcon JUnit
    SOAP
    Apache Maven
    Jakarta Server Pages
    JDBC
    Jakarta Server Faces
    Spring Boot
    Jenkins
    JasperReports
    Java Servlet API
    PrimeFaces
    Spring Framework
    Hibernate
    Java
    PostgreSQL
  • $45 hourly

    • 4.6/5
    • (8 jobs)
    Greetings 👋 I'm a certificated Java/AWS developer and lead engineer 👨‍💻with over 12 years of experience in the area. Being focused on Java Back-End development and working as a tech leader for the last few years, I've developed dozens of large, custom web applications based on Java technology, focusing on a wide range of industries including: Fintech, Telecommunication, startups, e-commerce, Healthcare and search engines. Have solid experience with Java (Spring, Spring Boot framework, Hibernate, etc.) and AWS stack (configuring, hosting, development). I can help you with: ✅ Cloud applications, scalable systems, ✅ Reliable, safety-critical systems, ✅ API design, development and integration, ✅ Enterprise Solutions Development ✅ Backend Systems Engineering ✅ Microservices Architecture 💡 𝐀𝐫𝐞𝐚𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 : Throughout career, I have spearheaded teams in delivering impactful solutions, including REST services for microservices-based applications and streamlining batch processes, cloud services (AWS). These accomplishments have significantly improved operational efficiency and customer experience. 🏆𝐓𝐡𝐞 𝐏𝐨𝐰𝐞𝐫 𝐨𝐟 𝐍𝐮𝐦𝐛𝐞𝐫𝐬: Having successfully worked with a diverse range of clients, I've completed numerous projects, with an outstanding track record of delivering results. My work has touched upon various industries, showcasing my adaptability and versatility. 🤝𝐋𝐞𝐭'𝐬 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐞: If you're seeking a developer to implement solutions or create Java-based applications, let's connect! I'm excited to partner with you to bring your vision to life and drive success for your initiatives. With a commitment to excellence and a passion for innovation, I'm thrilled to embark on new projects and conquer new challenges with you! 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐝𝐞𝐭𝐚𝐢𝐥𝐬: ✔️ Java: Java 7-17, Java EE, JavaFX ✔️ Spring: SpringBoot, Spring Core, Spring MVC, Spring Batch, Spring Security, Spring Cloud, ... ✔️ Frameworks: Spring, Hibernate, Vaadin, Struts, PrimeFaces ✔️ Cloud: AWS, Docker, Kubernetes, ECS, EKS ✔️ APIs: REST, SOAP, WebServices, Swagger/OpenAPI 3 etc. ✔️ Web: Bootstrap, React, JavaScript, OAuth, Tomcat, JBoss ✔️ Performance optimization: JMeter, JProfiler, AWS X-Ray. ✔️ Version control: Git, Github, Bitbucket, GitLab, SVN. ✔️ CI/CD: Jenkins, Sonar, Bitbucket/GitLab pipelines, AWS CodeBuild/CodeDeploy. ✔️ Other: Maven, Nexus, Ant.
    vsuc_fltilesrefresh_TrophyIcon JUnit
    CSS
    HTML
    React
    JavaScript
    Web Development
    MySQL
    API Integration
    Python
    Amazon Web Services
    RESTful API
    Spring Boot
    Spring Framework
    API
    Java
  • $60 hourly

    • 5.0/5
    • (7 jobs)
    10+ years as Senior Java Engineer. Accenture, Credit Suisse & Unibet ex-employee. Skilled in Java 11, Spring Boot, REST APIs, Web Applications, Relational & NoSQL Databases, Scrum, AWS, Angular, Docker. I also worked as a consultant on complex projects for investment banks - Barclays Capital, Deutsche Bank and Citi. Great experience with: ⇨ Java stack: Java 11, Spring Boot, Spring Security, Spring Data, Spring MVC, Spring Cloud, JPA/Hibernate, Spring Hateoas ⇨ REST API: design and development, documentation (swagger) ⇨ Databases/ORMs: Oracle, MSSQL, MySQL, PostgreSQL ⇨ Messaging: JMS, ActiveMQ, Tibco, Kafka ⇨ NoSQL: MongoDB ⇨ AWS: EC2, S3, SQS, Route 53, IAM, Lambda ⇨ DevOps and Infrastructure: Bamboo, TeamCity, Linux, Docker, Docker Swarm, DockerHub, Ant, Apache Maven/Gradle, Jenkins, GitLab, GitLab CI, GitHub, BitBucket, Sentry.io, ELK, SonarQube, Git, SVN ⇨ Frontend: HTML/CSS, JavaScript, JQuery, Angular, npm, gulp ⇨ Other Java libraries: RestAssured, JUnit/Mockito/PowerMock, Lombok, FreeMarker/Thymeleaf/Velocity, DropWizard, Jackson/Gson
    vsuc_fltilesrefresh_TrophyIcon JUnit
    CI/CD
    Amazon Web Services
    Spring MVC
    Java Persistence API
    Hibernate
    API
    Spring Boot
    RESTful API
    SQL
    Docker
    Web Application
    AngularJS
    Java
    MySQL
    Spring Framework
  • $20 hourly

    • 4.8/5
    • (6 jobs)
    Hello, I am an experienced Full-Stack Mobile and Web Developer with over 10 years in the software industry. Throughout my career, I have contributed to projects across a diverse range of industries, including E-commerce, Wellness & Fitness, EdTech, Social Media, Hospitality, Retail, Fintech, Media & Entertainment, and Refineries, among others. Here’s a brief overview of my expertise: - Mobile App Development: Java, Kotlin, Swift, Objective-C, Android Studio, Eclipse, Xcode. - Backend Development: PHP, Python, Node.js, Express.js, NestJS. - Frontend Development: HTML5, CSS3, JavaScript, TypeScript, Angular, React.js, Vue.js. - Databases: PostgreSQL, MySQL, Derby, MongoDB, DynamoDB. - AWS Services: EC2, VPC, RDS, S3, Elastic Beanstalk, Cognito, SES, CloudFormation, ECS, ELB. - Virtualization: Docker, Docker Compose. - CI/CD: CodePipeline, Jenkins, CircleCI, Codemagic. 📱 Full Stack Developer Mobile App & Web 💻 Frontend Developer 🌐 Backend Developer ⚛️ MERN Stack Mobile App & Web Developer ✅ On Time Delivery ✅ Quick Response ✅ Always Online ✅ Quality Work ✅ Client Satisfaction I have had the privilege of working on a variety of solutions and am comfortable handling both existing and new projects. I have had the opportunity to assist numerous clients in achieving their business goals, and I would be delighted to support you in the same way. Thank you for taking the time to visit my profile. Feel free to reach out—whether you’d like to discuss a project, share ideas, or simply connect. I would be delighted to collaborate and explore how I can support your initiatives. Feel free to 𝗗𝗠 𝗺𝗲 𝗼𝗿 𝗶𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 to your project on Upwork. Warm regards, Praveen R.
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Amazon S3
    Angular
    AWS Development
    Python
    Kubernetes
    Apache Kafka
    Java
    Node.js
    MySQL
    React
    Spring Boot
    Spring Framework
    AWS Application
  • $40 hourly

    • 5.0/5
    • (40 jobs)
    Back-end engineer with a lifelong passion for software, databases, and scalable distributed solutions. Over the 13+ 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 )
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Project Management
    Project Planning
    Web Application
    SaaS
    Integration Testing
    J2EE
    Spring Boot
    Microservice
    Hibernate
    Spring Framework
    PostgreSQL
    Amazon DynamoDB
    Java
    MySQL
  • $70 hourly

    • 5.0/5
    • (20 jobs)
    🌟 Expertise in Full-Stack Development: Leveraging a robust mix of JAVA 23, JAVA 21, JAVA 17 LTS, JAVA 8+, and JAVA legacy. Skilled with Spring Boot, Spring Security, JPA, Spring WebFlux, Quarkus, Rest, Javascript, and React. Proficient in both front-end and back-end development. 💾 Advanced Caching & Messaging Systems: Proficient with KAFKA, Redis, Hazelcast, and Spring Integration, enhancing data management and communication efficiency in applications. 🚀 Containerization & Orchestration Mastery: Adept with Docker, Kubernetes, and the Kong gateway. Skilled in managing complex deployments and maintaining high availability. 📊 Database Management: Proficient across a range of databases including MySQL, Postgres, Oracle, and SQL Server, ensuring robust data storage solutions. 🔧 Microservices & Monolithic Architectures: Extensive experience in reworking applications in both monolithic and microservices frameworks, providing a deep understanding of various development strategies. 🛠️ Proven Development Track Record: Successful history of designing, developing, and implementing web-based software applications, grounded in a thorough understanding of industry technical standards and meticulously analyzed requirements. 🔍 Code Optimization & Debugging: Active engagement in code reviews and debugging. Experienced in diagnosing and resolving production issues related to performance, server shutdowns, JVM optimizations, and memory management using tools like VisualVM and JProfiler. 🌐 DevOps and Continuous Integration: Proficiency with AWS, Jenkins, and Gitlab pipelines, enabling seamless navigation and utilization of diverse tech stacks and tools. 🤝 Agile Collaboration: Honed collaborative skills in Agile environments, ensuring projects are delivered within stringent deadlines. My teamwork capabilities enrich communication and consistently contribute to achieving team objectives.
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Spring Boot
    Linux
    React
    Web Application
    Web Development
    SQL
    JavaScript
    Java
  • $30 hourly

    • 4.8/5
    • (185 jobs)
    🥇 𝑻𝒐𝒑 𝟏% 𝒐𝒇 𝑸𝑨 𝑭𝒓𝒆𝒆𝒍𝒂𝒏𝒄𝒆𝒓𝒔 𝒐𝒏 𝑼𝒑𝒘𝒐𝒓𝒌 𝑷𝒍𝒂𝒕𝒇𝒐𝒓𝒎 🥇𝑻𝑶𝑷 𝑹𝒂𝒕𝒆𝒅 𝑷𝑳𝑼𝑺 𝒔𝒊𝒏𝒄𝒆 𝟐𝟎𝟐𝟎 & 𝑻𝑶𝑷 𝑹𝒂𝒕𝒆𝒅 𝒔𝒊𝒏𝒄𝒆 𝟐𝟎𝟏𝟕 I am a full-time, dedicated, self-driven, detail-oriented Project Manager and QA freelancer with 15+ years of hands-on experience in Manual, Automation, and Mobile testing. I am serving clients on Upwork from the era of Odesk and Elance. Testing and Quality assurance is my passion, and I enjoy doing "DESTRUCTIVE CREATION" to make application more "CONSTRUCTIVE". I can ensure that your application will work properly and will have great endurance. So if you are willing to see your application FREE FROM BUGS 🐛🐛🐛, on time, then HIRE ME🚀🚀🚀 𝑴𝒚 𝑺𝒑𝒆𝒄𝒊𝒂𝒍𝒊𝒛𝒂𝒕𝒊𝒐𝒏: 𝑻𝒆𝒔𝒕𝒊𝒏𝒈: 🗹 Web application testing 🗹 Accessibility Testing 🗹 Functional testing 🗹 Usability testing 🗹 Databox Whitebox testing 🗹 Database automation testing 🗹 UI/UX testing 🗹 WCAG 2.1 AA Compliance 🗹 WCAG 2.0 AA Compliance 🗹 Desktop testing 🗹 Security testing 🗹 Penetration testing 🗹 Grey testing 🗹 Responsiveness testing 🗹 Cross browser testing 🗹 Multiple platform testing 🗹 Smoke testing 🗹 Confirmation testing 🗹 Compatibility testing 🗹 Load testing ➡️ Jmeter 🗹 Performance testing 🗹 Automation Testing ➡️ Selenium Python ➡️ Playwright ➡️ Cypress 🗹 API Testing ➡️ Postman 🗹 Accessibility testing ➡️ Chromebox, NVD, Lighthouse, inbuilt screen reader Automation testing expertise: 🗹 Creation of framework from scratch 🗹 Handling dynamic locators 🗹 UI assertion by image comparison 🗹 Jenkins CI/CD 🗹 Github, Bitbucket repository 🗹 Cross browser automation testing 🗹 Browser stack automation testing 🗹 My SQL, Oracle connectivity 🗹 Browser stack automation testing 🗹 RestAPI testing using postman 🗹 GraphQLAPI testing using playwright pytest 🗹 API Testing automation using postman 🗹 CI/CD integration of API postman tests 🗹 API testing using selenium. Playwright. 🗹 Postman Test runner 🗹 Postman monitor 🗹 Running test using postman newman 🗹 Junit Cucumber 🗹 BDD framework Programming and Query Languages: 🗹 Python 🗹 Java 🗹 MySQL 🗹 Javascript 🗹 Typescript Business Analyst and Project Management: 🗹 User stories 🗹 User Journey 🗹 Task creation 🗹 Task assignment 🗹 Task tracking 𝑫𝒆𝒍𝒊𝒗𝒆𝒓𝒂𝒃𝒍𝒆𝒔: 🗎 Bug reports—With clear steps, annotated screenshot, videos, and log files 🗎 Test closure report 🗎 Test cases/Test scenarios 🗎 Help documents 🗎 Test plan 𝑫𝒐𝒎𝒂𝒊𝒏 𝑬𝒙𝒑𝒆𝒓𝒕𝒊𝒔𝒆: ✅ Crypto Wallets ✅ Survey development and Testing ✅ NFT marketplace ✅ Property Management ✅ Affiliate Marketing ✅ e-learning/LMS ✅ eCommerce/POS ✅ Business Intelligence ✅ AI based ✅ Fintech ✅ HR tools ✅ SaaS ✅ Social media ✅ B2B ✅ B2C ✅ SaaS 𝑨𝒖𝒕𝒐𝒎𝒂𝒕𝒊𝒐𝒏 𝑻𝒆𝒔𝒕𝒊𝒏𝒈: ✅Appium-Java-POM ✅Cypress-JavaScript-POM✅Selenium-Java-Cucumber✅ Playwright-Pytest-POM ✅ Selenium-Python-POM ✅ Selenium-Python-traverse ✅API testing using Postman ✅ API testing using selenium ✅ API testing using playwright ✅ graphQL API testing by playwright ✅ Jmeter ✅ Automation test integration on Browserstack and Lamdatest 𝑫𝒆𝒗𝒊𝒄𝒆 𝑨𝒗𝒂𝒊𝒍𝒂𝒃𝒊𝒍𝒊𝒕𝒚: 📱 iPhone 16, iphone 14, iPhone X, iPhone 11, iPhone 13 📱 Samsung A9, A6, S20 FE 🖥 Windows 11 - 16'' 🖥 Windows 11 - 14'' 🖥 Windows 11 - 10'' 🖥 Windows 10 🖥 Macbook Air - 13'' 💰 Paid subscription of BrowserStack with 3000+ real devices and browsers 𝑻𝒐𝒐𝒍𝒔: 🛠 Project management/bug tracking tool: Jira, Clickup, Trello, Red mine, Unfuddle, you track, Bugzilla, Mantis, test lodge, TFS etc 🛠 Test case management tool: Test lodge, Test rail, xray, qase, TFS etc 🛠 Accessibility Testing: Chrome Vox Screen reader, Light house, NVDA Screen reader 🛠 Team communication: Slack, skype, hipchat, Teams 🛠 Testing support tool: jing, gyazo, pic pick, MS-Office, snag it, dev tool bar 🛠 Wire frame: blasmiq, axure 🛠 Survey: qualtrics, survey monkey 🛠 Cross platforms connectivity: Browser stack 🛠 Simulators: Android studio, xcode What I learned today: 1) Captcha handling in selenium python 𝑳𝒂𝒔𝒕 𝑼𝒑𝒅𝒂𝒕𝒆𝒅: 02-Dec-2024
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Prompt Engineering
    TestNG
    LaMDA
    Cucumber
    GUI Testing
    QA Management
    Software Testing
    Black Box Testing
    Selenium
    BrowserStack
    Web Testing
    Functional Testing
    Usability Testing
  • $30 hourly

    • 5.0/5
    • (18 jobs)
    I am a mobile app engineer with over five years of dedicated expertise in Android and Flutter. As an experienced Flutter developer, I excel at translating design prototypes into high-quality, responsive applications using the Flutter framework. I am passionate about Flutter and constantly strive to stay updated with the latest features and best practices Whether working independently or as part of a collaborative team, I am committed to delivering high-quality, scalable, and maintainable flutter app. My ability to communicate effectively with stakeholders, understand project requirements, and translate them into robust, feature-rich applications has been a cornerstone of my success. I also work as an Android Developer, where I have completed multiple projects for various clients, ranging from e-commerce platforms to educational apps. I have extensive experience in Android development, using technologies such as Android Jetpack, Dagger, Room Database, WorkManager, and threading. ⭐️Tech Stacks ⭐️ Flutter(Dart) Android(Kotlin/Java) Firebase Azure DevOps DataDog FlutterFlow Sentry GraphQL Websocket Flutter-web OpenAI AWS Stripe
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Flutter Stack
    GraphQL
    Google Maps
    Agile Project Management
    Jira
    Git
    Java
    ChatGPT
    Azure DevOps
    Android
    Kotlin
    Mobile App Development
    Firebase
    Dart
    Flutter
  • $14 hourly

    • 4.8/5
    • (39 jobs)
    I have 9+ years experience in Website/Mobile App QA[Manual/Automation]. Automation Testing Expertise: Automation Tools(Selenium Web-driver and Selenium IDE) Robot Framework and QTP(Automation) Knowledge Of Java,C#,Node JS and Python Expertise In Framework Designing [Hybrid,Data driven and Keyword driven framework] Knowledge Of Junit and testng. Automating sanity test suite, Automate Business Scenarios, Script Execution/Maintenance by using Selenium Web Driver. Knowledge of Sikuli, Robot Class and Auto IT for Desktop Based Applications. Knowledge Of Github,bitbucket and SVN. Knowledge of Maven and Ant. Knowledge Of Jenkins [CI Tool] Integration of SauceLabs and browserstack with Selenium. Integration Of JIRA and TestRail with Selenium. Expertise In Extended Logs and Reports. Expertise In Webservices Testing. Monkey Talk (Automation Tool For Android/I phone App). Appium (Automation Tool For Android/I phone App). Manual Testing Expertise: Expertise in Web Testing On All Technologies [Java,.Net,Magento,PHP,Python,Ruby On Rails etc] Expertise in Mobile App Testing.[Android,iOS and Windows] Knowledge Of Desktop App Testing. Expertise In All Domain Web Testing. Knowledge Of Agile Methodology with Scrum framework implementation. Expertise In writing Test cases and Test Plans Knowledge of JIRA,bugzilla,Redmine,Trello,Bugrocket,Asana,Pivotal Tracker [Defect Tracking Tools] Knowledge of TestRail and OnTestPad [Test Management Tool] Involved In Preparing Traceability Matrices. Good Knowledge of SDLC and Software Testing Life Cycle Experience On Sanity Testing, Regression Testing, Functional Testing, User Interface Testing. Ability to Analyze Requirements, Customer Experience, Business Flow from Functional Level. Performed various black box testing Methodologies Like functional testing and Regression Testing. Performing various types of testing Like GUI Testing, Integration Testing, User Acceptance Testing, Cross Browser Testing, End to End Testing. Communication with Software developer and configuration experts to determine the root cause, severity and impact of defects. Involving in giving daily and weekly status reports to clients. Knowledge of MSSQL
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Rest Assured
    SQL
    Java
    Apache JMeter
    TestNG
    Python
    Robot Framework
    Selenium WebDriver
    Test Case Design
    Test Strategy
    Manual Testing
    Appium
    Postman
    Functional Testing
  • $25 hourly

    • 5.0/5
    • (2 jobs)
    Welcome to my profile! With 8 years of expertise in Java development, I specialize in delivering end-to-end solutions for a wide variety of products—from UI to backend. I can jump into projects quickly, ensuring efficient results with the highest quality and always on time. What I Bring to the Table: I’ve worked on a diverse range of projects, including payment gateway integration, HRMS platforms, and other Java-based applications, where I handled everything from UI design to backend architecture. I leverage industry-leading tools like Datadog for performance monitoring, Splunk for log debugging, and Checkmarx and SonarQube for ensuring best-quality code. Whether it’s building a new system or optimizing an existing one, I bring a comprehensive approach to project success. Why Work With Me? I am a detail-oriented, results-driven developer who writes clean, maintainable code. My ability to rapidly adapt and contribute to any phase of development allows me to provide solutions that are efficient and reliable, meeting client expectations and deadlines. Core Expertise: Languages: Java (8,11), Kotlin, C#, .NET Frameworks: Spring, Spring Boot, Spring Security, Microservices DevOps: Docker, Kubernetes, Jenkins VCS: Git, BitBucket, CVS Databases: Oracle, MySQL, PostgreSQL, MongoDB, Cassandra Testing: JUnit, Mockito Domains: FinTech, HRMS, Healthcare, Payment Systems Web Services: REST, SOAP, JSON, XML Additional Skills: Agile Methodologies (Scrum, Kanban) Test-Driven Development (TDD) Continuous Integration/Deployment (CI/CD) Tools: Datadog (Performance Monitoring), Splunk (Log Debugging), Checkmarx & SonarQube (Code Quality) Successful Projects: Developed a secure payment gateway integration for various e-commerce and travel booking platforms, enhancing transaction success rates and reducing processing times. Built an HRMS platform that managed all data manipulation from UI to backend, using Java, Cassandra, Spring Boot, microservices, REST APIs, and GCP, delivering a scalable and reliable system. Worked on large-scale enterprise systems and other Java-based products for logistics and financial companies, delivering end-to-end solutions on time and within budget. I’m excited to help bring your project to success. Let’s collaborate to build something outstanding!
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Web Service
    PHP
    Oracle
    Hibernate
    Spring MVC
    Microservice
    HTML
    JSON
    RESTful API
    Java Servlet API
    Spring Boot
    JavaFX
    Java
    JavaScript
  • $55 hourly

    • 4.3/5
    • (119 jobs)
    20 plus years of experience. Certified Scrum Master, Project Manager, Product Owner, Director of QA Engineer. Planning, developing, and conducting tests on components, products, and systems. Phenomenal Scrum Master, Project Manager, and QA Engineer with an amazing attitude. Never afraid to ask questions and always suggest improvements. Has experience working with many different national and cultural environments. Proficient at working on multiple projects and meeting deadlines. Excellent at learning and adapting to new technologies and tools. Proficient in: ● Planning and Defining Scope ● Activity Planning and Sequencing ● Resource Planning ● Developing Schedules ● Time Estimating ● Cost Estimating ● Developing a Budget ● Documentation ● Creating Charts and Schedules ● Issue reproduction ● Risk Analysis ● QA ● Game Testing ● Software & App Testing ● Manual Testing ● Mobile App Testing ● Functional QA ● Regression testing ● Upgrade and continuity testing ● Stress and performance benchmarking ● Defect reproduction ● Assistance in debugging ● Technical and UX feedback ●Managing full lifecycle of the project ●Responsible for conducting smoke, functional, UI/UX, regression and ad-hock testing ●Working in an Agile environment with frequently changing requirements and features. ●Reviewing and analyzing PBI’s and Feature specifications to create test cases for manual testing. ●Translating Product Backlog Item (PBI) and feature specifications into functional test cases. ●Working closely and interact with business analysts and development team on analysis & design to meet business requirements and release roll out. ●Entering/Updating sprint backlog tasks to be performed/committed to during each sprint in Team Foundation Server (TFS). ●Providing estimations for each QA task deliverables. Presenting new feature to client after each sprint by demonstrating business specifications added during the sprint to stakeholder/product owner. ●Creating bugs using Microsoft Test Manager and report all issues discovered in SCRUM meetings. ●Attending sprint retrospective meetings at the end of each sprint and provide feedback. ●Supporting clients Build Verification Test (BVT’s) during each release. ●Tracking, logging, and validating defects. ●Tracking full test methodologies, bug life cycle, and the stages of software development
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Project Management
    Product Management
    Technical Writing
    Software QA
    Software Testing
    Business Analysis
    Test Case Design
    Regression Testing
  • $15 hourly

    • 4.9/5
    • (4 jobs)
    Welcome to my Upwork profile! My name is Sofiia and I'm a talented Java Developer with 2 years of experience. My expertise is Backend development. In the nearest future I see myself as a successful and professional Java developer, so I am ready to do everything to become who I want to be. Coder at heart, I'm sure, we're not wasting each other's time! Backend: Java Frontend: HTML, CSS –basic, JavaScript Frameworks: Spring Framework (SpringMVC, Spring Boot, Spring Data, Spring Security) ORM: Hibernate Testing: JUnit, Mockito, JMeter VCS: Git (GitHub) Relational databases: MySQL, PostgreSQL,MongoDB, SQLite Build automation tools: Maven, Gradle API documentation tools: Open API, Swagger Clouds: AWS IDE: IntelliJ IDEA, Android Studio Payments: Stripe Search: ElasticSearch Other: REST API, Design Patterns, Log4j , Lombok, Thymeleaf, Docker, Postman, Liquibase, Ajax, Google Vision API, Tesseract OCR, OpenCV, OpenCSV, Stanford Core NLP, Apache POI, Apache PDFbox, Apache Server, SonarLint. Feel free to text me back and we'll discuss everything!
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Stripe
    Oracle
    Android Studio
    JetBrains IntelliJ IDEA
    Mavenlink
    Spring Data
    Mockito
    Docker
    MongoDB
    PostgreSQL
    SQLite
    Spring Boot
    Hibernate
    Java
  • $20 hourly

    • 5.0/5
    • (66 jobs)
    🏅 Top Rated Freelancer Hello !!! I’m a Software Engineer specialised in Backend Development with over 6+ years of working experience mostly working on Spring Framework. Hands-on design, development, implementation, and optimisation of the application. Use Object-oriented techniques and Software engineering best practices including Design review, Code review, and Code re-factoring. Experienced with the full Software development life cycle (SDLC) including - Requirement gathering - Prototyping (Design, Development & Debugging) - Testing and - Deployment Good experience in Agile software development methodologies (Scrum, Sprint plan, Timeline, etc.). The strong idea about the deployment process and tools like Maven, Jenkins. 🌟 My Specialization 🌟 ✅ Java (8, 11 & 17): JavaSE, JavaFx, JDBC, Swing, Java Beans, Java Mail. ✅ Java Ee Family: EJB, JPA, Hibernate, CDI, Servlets, RESTful Services (JAX-RS), SOAP Services (JAX-WS), Apache CXF & Bean Validation. ✅ Java Ee Web: JSF, JSP, Thymeleaf, Bootsfaces & Primesfaces. ✅ Spring Family: Spring MVC, Spring Boot (Data, Rest, Vault, Security & Cloud [Microservices etc.]). ✅ SQL: MySQL, PostgreSQL, MariaDB & Oracle ✅ NoSQL: MongoDB & Redis ✅ AWS: IAM, EC2, S3, RDS, Lambda, Elastic Beanstalk etc. ✅ Oracle Cloud Infrastructure (OCI): Compute Service & Autonomous JSON Database ✅ Message Queues: ActiveMQ & RabbitMQ. ✅ Networking: WebSocket (Stomp & SockJs), Socket & RMI. ✅ Testing: JUnit, Spring Test, Mockito, Integration Test, Unit Test. ✅ Versioning: Git, Github, BitBucket & VisualSVN. ✅ DevOps: Docker, Docker Compose & Jenkins. ✅ Web: HTML, CSS, SASS, Javascript, React Js, Bootstrap & Material UI. 🌟 WHY CHOOSE ME OVER OTHER FREELANCERS? 🌟 ✅ Client Reviews: I focus on providing VALUE to all of my Clients and Earning their TRUST. The Client Reviews and Feedback on my Profile are critical to me. ✅ Over-Delivering: My focus is on PROVIDING more than what I expect to RECEIVE. I take pride in leaving all of my Clients saying "Great Work." ✅ Responsiveness: Being responsive and keeping all lines of communication readily open with my Clients.
    vsuc_fltilesrefresh_TrophyIcon JUnit
    JavaFX
    Technology Tutoring
    Jakarta EE
    API Development
    Java
    MySQL
    Java Persistence API
    MongoDB
    RESTful API
    React
    Spring Boot
    PrimeFaces
    PostgreSQL
    Docker
  • $36 hourly

    • 5.0/5
    • (41 jobs)
    Hi!!! It's me. An enthusiast with 7 years experience as a Senior Software Engineer, especially in Golang Development and Java/Spring Framework Development. I graduated with a Bachelor degree in Computer Science April 2018. I have worked for many projects in many fields like: warehouse outsourcing, data processing, product development. Having worked for a big company in Vietnam, I have strong experience with developing highly scalable, performance and modern Microservices based platforms and mobile/web APIs. Main services that I offer now on Upwork include: Golang Backend Development, Java/Spring Framework Backend Development, AWS consultant, Elasticsearch, MongoDB. #1. Golang Backend Development - 3 years of experience in backend development using Golang framework: GIN / Gorm. - Understanding of REST / gRPC API and one of the databases such as PostgreSQL, MySQL, Redis.IO, Elasticsearch… - Very good at unit testing. - Experience with Microservices. - Good document writing and clean-coding skills. - Good soft skills such as communication and problem solving. - Understanding of system design and tuning for high performance, scalability and reliability. - Experience with Microservice architect. - Experience with Devops, Linux, Ubuntu. #2. Java/Spring Backend Development: - Experienced in Java/J2EE, Spring Boot, PostgreSQL and MongoDB. - Experienced with maven and can work with Git/Github. - Understanding of system design and tuning for high performance, scalability and reliability. - Experienced in building API with REST. Also experienced in utilizing API with GraphQL. - Solid understanding with some software principles like: SOLID, DRY, OOP. - Experience with Devops, Linux, Ubuntu. #3. AWS - Hands-on AWS Technical Architect with 3 years in developing and architecting enterprise large scale multi-tier solutions that require complex Architectural decisions. - Hands-on experience on implementing Cloud Solutions using various AWS services including: EC2, VPC, EKS, S3, Lambda, RDS, Aurora, Code Pipeline, Code Build, Code Deploy. - Worked on infrastructure with Docker containerization. Expertise in Docker containerized environment, hosting web server on containers, building Docker images using Dockerfile. #5. Elasticsearch Expert - Installing and configuring Elasticsearch for production. Making Elasticsearch ready for scale and security. - Design and recommend a full text search system or centralized Logging Analysis system using Elasticsearch. Recommend which query can apply to specific use cases. - Tuning search queries for best performance and making the search results matching with user expectation. Tuning the indexing process for high performance and persistence. - Recommend the use case for suggestions. #6. MongoDB Developer and DBA - Excellent experience on MongoDB Administration. Good understanding of DB schema design, performance tuning and capacity planning. - Operational experience with MongoDB Data Modeling. Understand and Optimize query performance. Excellent understanding of MongoDB CRUD operations - Configure and monitor MongoDB instances. Configuring MongoDB replica set with members and arbiters. - Comfortable in using MongoDB tools like, mongostat, mongotop, mongoexport, mongoimport, mongodump, mongorestore etc. - Database Security management and User Management.
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Golang
    Microservice
    Java
    MongoDB
    Elasticsearch
    Linux
  • $40 hourly

    • 4.9/5
    • (33 jobs)
    I'm a part of a skilled Android and iOS development team based in Ukraine, right in the heart of Europe. Our strengths: ✔️ Proficient in Android, iOS, and Flutter development ✔️ Full project management from inception to delivery ✔️ Commitment to transparent and consistent communication Our Expertise: We specialize in developing high-load native apps, VoD/HLS video platforms similar to YouTube, Social networks, Dynamic Chats, Cashback solutions, Cryptocurrency integrations, and E-commerce ecosystems. Our passion lies in refining UI/UX, intricate animations, seamless user flows, and top-notch performance. We invest extensive hours to ensure our apps achieve the level of finesse you'd expect from industry giants like Google and Netflix, if not more. Your vision, our expertise. Our workflow: - Design: Zeplin, Sketch, Figma, Photoshop - Project Management: Trello, Jira, Slack, Skype - Analytics: Crashlytics, Firebase, Matomo - Development: Bitbucket, Java, Kotlin, Swift, Flutter, React Native, Angular, Svelte, SvelteKit, Solid.js, Astro - Preferred architectural patterns: MVP/MVVM. Keywords: Android, iOS, Flutter, project management, UI/UX, animations, high-load apps, VoD, HLS, video platforms, social networks, Cashback, cryptocurrency, e-commerce, Java, Kotlin, Swift, MVP, MVVM, Svelte, SvelteKit, Solid.js, Astro
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    Svelte
    Android App
    Apple Watch
    Chat & Messaging Software
    Native App Development
    User Profile Creation
    Tablet
    iOS
    Smartphone
    Flutter
    Mobile App Development
    Android App Development
    iOS Development
    Kotlin
    Swift
  • $17 hourly

    • 4.7/5
    • (9 jobs)
    I am a senior Java developer having more than 5 years of professional experience in software development. A self-starter, and a proven team player, and always accepted the challenges that allow me to learn new skills while utilizing my hard-earned skills - Experienced in various areas in the design, development, and maintenance of software applications - Well-versed in developing applications based on SOA (SOAP/Rest). - Have experience in creating applications from scratch. - Have good knowledge in Java7/8/11/17, MySQL, Oracle ,Spring Frameworks(Boot, Security, Data JPA, Spring Web, etc.) and docker. - In addition to working independently on projects, I am well able to create value with a team. - Experienced in writing test automation and load test scripts. - Good problem-solving skills My specialization: ✅ Java, JavaEE, Java Web ✅ Spring Boot, Spring MVC, Spring Security, Spring integration, Spring MicroServices ✅ ORM, Spring Data/JPA/Hibernate/ JDBC, Spring sessions ✅ Databases: MySQL, Postgres Oracle Pl/SQL, MongoDB, Mongoose , MMsql Server and cassandra ✅ REST APIs integration, design, and development ✅ Soap Apis ✅ Linux, Dockerizatoin ✅ Rabbit Mq, KAFKA, and its integrations ✅ Front end development: Html, CSS, JavaScript, thyme leaf 𝙈𝙮 𝘾𝙤𝙧𝙚 𝙅𝙖𝙫𝙖/𝙎𝙥𝙧𝙞𝙣𝙜 𝘽𝙤𝙤𝙩 𝙀𝙭𝙥𝙚𝙧𝙩𝙞𝙨𝙚: 💥 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: Spring boot, Hibernate, Web Services, JPA, JMX Client, Spring MVC, Spring Rest, Spring data, Spring Gateway, etc 💥 𝐃𝐞𝐯𝐎𝐩𝐬: Docker 💥 𝐃𝐚𝐭𝐚𝐁𝐚𝐬𝐞: SQL Server, MySQL, Oracle, Postgresql, Mongo Db & Cassandra 💥 𝐎𝐭𝐡𝐞𝐫 𝐓𝐨𝐨𝐥𝐬 & 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬: SVN, GIT, PostMan, JMeter,Swagger 💥 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 𝐌𝐨𝐝𝐮𝐥𝐞𝐬: Spring Security,JWT 💥 𝐓𝐞𝐬𝐭𝐢𝐧𝐠: JUnit, Mockito 💥 Payment Gateways: Master Card 💥 Third-party Integrations: SendGrid API, TextLocal API, WhatsApp Business API
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Thymeleaf
    Spring Framework
    Spring Boot
    MySQL
    RESTful API
    Java
    Spring Security
    RabbitMQ
    Java Persistence API
    Microservice
    Hibernate
    Spring MVC
    Docker
    JavaScript
  • $65 hourly

    • 5.0/5
    • (14 jobs)
    I am an experienced backend Java developer who specialises in building small scalable Micro services. Expert in building scalable Rest apis and processing systems. Strong and un wavering opinion that test driven development is the only way to build robust future proof code. I understand and have built front end webpages, see the portfolio section, but this is not my core area backend development is. I have been Contracting/Freelancing for many years now in different business shapes and sizes. I enjoy what I do and have worked with many companies on small and large pieces of work. My experience ranges from working in an investments bank to a sports startup, media and entertainment and adTech. Ive seen and learnt a lot from every role and apply all these learning to my current work.
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Integration Testing
    HubSpot
    Mockito
    HTTP
    Spring Boot
    Amazon DynamoDB
    Twilio API
    Java Persistence API
    Microservice
    Java
    MySQL
    Web Service
    Spring Framework
  • $40 hourly

    • 5.0/5
    • (82 jobs)
    **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!
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Cloud Computing
    CI/CD
    SQL Programming
    J2EE
    DevOps
    Microsoft Azure
    Amazon Web Services
    RabbitMQ
    Hibernate
    Microservice
    RESTful API
    Spring Security
    Spring Boot
    Spring Framework
    Java
  • $30 hourly

    • 4.5/5
    • (84 jobs)
    Hello! I am glad that you are reading this, and I hope you are interested in our cooperation in the near future. Just click the "Invite to Job" button, and let's begin! I am a native Android, iOS, and Flutter developer with more than 10 years of experience in the programming sector. During this time, I have acquired multiple skills, and now I am a lead developer with my own team that can cover all aspects of development. I build long-term relationships with my clients by providing a client-centric approach to ensure that the project not only meets but surpasses their expectations. I am always ready to lend a hand if they need my help. As a lead developer, I also pay significant attention to app architecture, which allows us to build scalable and secure applications. If you want to build your own app but have concerns about the tech stack and features, I will help you make the right decision whether you need to use native or hybrid development, and I can also assist you with the design. So, just contact me and tell me what you want to build!
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Dart
    Google Maps API
    Java
    Android App Development
    Flutter
    Data Structures
    iOS Development
    Mobile App Development
    iOS
    Android
    Mockup
    Firebase
    Swift
  • $50 hourly

    • 5.0/5
    • (2 jobs)
    I am a passionate full-stack Java/Java EE Developer with 15+ years of professional experience. My areas of expertise include developing and deploying Java applications. I have worked with most Java technologies and versions. Starting from JAVA 1.2 to Java 21. From J2EE to JAVA EE 5,6 and 7. I have deployed applications successfully in AWS using Docker and Kubernetes. I am equally passionate about DevOps. I have maintained build and deployment scripts for most of my projects. ✅Java ✅Springboot ✅Spring Framework ✅Java EE ✅J2EE ✅Docker ✅Kubernetes ✅REST ✅SOAP ✅Webservices ✅JPA ✅EJB ✅Jenkins ✅Circle CI ✅Linux ✅Groovy
    vsuc_fltilesrefresh_TrophyIcon JUnit
    J2EE
    API
    Continuous Integration
    React Native
    React
    Jenkins
    API Development
    RESTful API
    JavaScript
    Spring Boot
    Java
    Spring Framework
    Kubernetes
    Amazon Web Services
    Docker
  • $37 hourly

    • 5.0/5
    • (6 jobs)
    Hi everyone! I am an Oracle Certified full-stack Java developer with huge experience writing secure code. I have been working on banking software for one of our local banks in Ukraine for more than 9 years. And it’s not a single experience I have, also I have worked on eCommerce projects, and participated in the development of hiring platforms, and tools for the CA Gen environment. My main goal is to create long-term relationships with my clients and build qualitative and reliable applications. I like to learn new technologies and move on with the latest trends in IT industry. I am an easy-talk-to person and think that communication is important in the development field. Feel free to message me, I will be glad to answer all your questions! These are my key skills: Backend: Java 6+, JavaEE, JavaSE Spring (Spring boot, Spring JPA, Spring data, Spring security and other Spring modules) Hibernate SQL DBs (MySQL, Oracle, PostgreSQL, SQLite) Non SQL DBs (Redis, Mongo) Elastic (full-text search and complicated full-text search) Amazon S3, AWS Thymeleaf Jasper Report jBOSS JBPM JUnit Frontend: ZK Ajax JSP, PrimeFaces HTML, XML Groovy Angular React Others JavaFX Git, SVN Docker SDK Eclipse/IntelliJ Idea Have a nice day!
    vsuc_fltilesrefresh_TrophyIcon JUnit
    ZK Framework
    J2EE
    WildFly
    Hibernate
    JasperReports
    Apache Groovy
    Spring Framework
    Java
    PrimeFaces
  • $30 hourly

    • 4.5/5
    • (23 jobs)
    ⭐️ Top Rated Plus - Top 1% of talent on Upwork ✅ 10+ Years of Experience ✅ 10000+ Hours of Quality Work Delivered ✅ Developed MVPs to Enterprise Level Products ✅ Worked with Cross Functional Teams I specialize in Analysis, Design, Programming, Implementation, Administration, and development of Core Banking Solutions, as well as Leasing Financial Web Systems. My career objective revolves around advancing in Financial & Leasing Software Development, Web development, and mobile application development within a dynamic, learning-oriented, and challenging environment. I am passionate about leveraging my skills, knowledge, and experiences to drive innovation. Technical Skills: ▶ Full-stack development with expertise in both front-end and back-end technologies. ▶ Proficiency in building dynamic web applications using J2EE, Java SE, and frameworks like Spring MVC and Spring Boot. ▶ Experienced with front-end frameworks such as React, Vue.js, and Angular for building interactive user interfaces. ▶ Strong database expertise in Oracle, MySQL, Redis, Derby, and Ecache. ▶ Integration of Java Applications and deployment on cloud platforms like AWS (Elastic Beanstalk). ▶ Skilled in Apache Tomcat for web application deployment and maintenance. ▶ Extensive experience with Google Libraries and APIs, including Maps and Firebase. ▶ Development of JSON-based APIs and integration of various Web Services. ▶ Expertise in SOAP and RESTful APIs for seamless communication between systems. ⭐️ Full SDLC involvement: from requirements gathering to post-production support (Development, SIT, UAT, Production). ⭐️ Collaboration with front-end, backend, and business clients to understand requirements and prepare mapping specifications. ⭐️ Specialized in design and development for Banking & Finance solutions. ⭐️ Expertise in handling protocols: MQ, HTTP, SOAP, TCP/IP, Files, Email, etc. ⭐️ Close interaction with interfacing teams to track Change Requests requirements. ⭐️ Excellent debugging and troubleshooting skills. Tools: ▶ IDEs: Eclipse, NetBeans, Android Studio, IntelliJ. ▶ Reporting: Jasper Reports, Tibco6. ▶ Database tools: SQL Developer, Squirrel Client, SVN, Git. ▶ Specialized tools: Tesser-2, TOD/PLSQL/SQLYOG, AndEngine. ▶ Integration: Google Maps, Firebase. ▶ Other tools: SOAP UI. ▶ Databases: Oracle, MySQL. ▶ Operating Systems: Unix, Linux, Windows. ▶ Programming Skills: Core Java, J2EE, ESQL, PL/SQL, XSL, WSDL, etc 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: Java Spring, Spring MVC, Spring Boot, Hibernate, Kafka, Microservices, RESTful APIs, RabbitMQ, Docker, Kubernetes, Java EE, Java SE, Consultant, Enterprise Java, Java Programming, Java Architect, Java Application Developer, Java Software Engineer, Java Solutions Architect, Java Technical Lead, Java API Development, Java Web Development, Java Application Design, Java Testing, Java Best Practices, Java Code Review, Java Version Control, Java Security, Java Scalability, Java Maintenance, Java Migration, Java Support.
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Vue.js
    Docker
    Kubernetes
    Hibernate
    Spring MVC
    RESTful API
    Spring Boot
    Microservice
    Apache Kafka
    PostgreSQL
    JavaScript
    Spring Framework
    Redis
    Oracle Database
    Java
  • $35 hourly

    • 5.0/5
    • (6 jobs)
    Professional Software QA Engineer with over 𝟐𝟎 𝐲𝐞𝐚𝐫𝐬 of experience in Manual | Functional | Automation | Performance | Load | Stress testing is 𝐇𝐄𝐑𝐄❗ I run an international QA / Performance testing company - PFLB, which has been offering a full range of outsourced testing services worldwide for over 12 years and has a strong reputation. 🌟🌟🌟 🤝 I understand all your concerns and can guarantee excellent communication and complete transparency with our team members! ✔️ We have set up straightforward and quick work processes with our clients that were tested multiple times within the last 12 years. 💲 What about our pricing, we charge the same rate as individual freelancers. In this period, we helped companies like 𝙏𝙞𝙣𝙙𝙚𝙧, 𝙎𝙖𝙢𝙨𝙪𝙣𝙜, 𝙖𝙣𝙙 𝙈𝙤𝙤𝙙𝙮'𝙨 to find and resolve performance bottlenecks such as ill-performing API calls or slow database queries. 👨‍💻 We are highly-skilled in identifying and analyzing defects, developing and executing test cases, and collaborating with cross-functional teams to ensure the delivery of high-quality software products. ⚙️ We employ the latest testing methodologies that make it possible to find bugs effectively at every stage of the development life cycle. 𝐖𝐡𝐲 𝐮𝐬❓ With 𝙤𝙫𝙚𝙧 20 𝙮𝙚𝙖𝙧𝙨 𝙤𝙛 𝙚𝙭𝙥𝙚𝙧𝙞𝙚𝙣𝙘𝙚 in providing QA /performance testing solutions worldwide, we have built a reputation for reliability. My deep understanding of the space helps companies gain more confidence around launching apps in production. We provide customers with custom solutions based on 𝙣𝙚𝙭𝙩-𝙜𝙚𝙣𝙚𝙧𝙖𝙩𝙞𝙤𝙣 load testing platform. We use the ISTQB methodologies to identify the riskiest and the most complex functionalities during the software functional testing, ensure solid test coverage, write test cases and conduct tests. 🛠️ 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲 𝐬𝐭𝐚𝐜𝐤 boomq.io - the next-generation performance testing platform. JMeter, LoadRunner, k6, HeadSpin, Grafana, Java, Oracle, MSSQL, Docker, Kubernetes, Jenkins 🧑‍💻 Given my engineering background and entrepreneurial expertise, I can help you find the best options in your performance engineering journey, which is necessary for the business to scale. 📞 So feel free to 𝙘𝙤𝙣𝙩𝙖𝙘𝙩 𝙢𝙚 for more information and let's get started.
    vsuc_fltilesrefresh_TrophyIcon JUnit
    Query Tuning
    Apache JMeter
    Scalability Testing
    Website Performance Optimization
    Application Performance Monitoring Software
    Load Balancing
    Endurance Testing
    LoadRunner
    Oracle Performance Tuning
    Load Testing
    System Testing
    Performance Optimization
    Software Testing
    Performance Testing
    Stress Testing
  • $35 hourly

    • 4.8/5
    • (20 jobs)
    OPEN FOR LONG TERM PROJECT I am a full stack developer with 9+ years of experience delivering enterprise-grade projects for globally-renowned companies such as R Systems, UnitedHealth Group, and most recently, Publicis Sapient. -Exposure of end-to-end development of software products from requirement analysis to system study, coding, testing, debugging, documentation, and implementation. -Helped in building the architecture and design of several web solutions and distributed systems from scratch. I do have working experience in designing and building scalable modules. o AWS: S3, SES, SNS, Setup EC2, RDS, API Gateway, ECS, Fargate, AWS code build deploy pipeline, AWS-Lambda, CDN(CloudFront), Security Group, Step Function, Serverless o Docker Implementation, Docker Image Setup, Jenkins CI/CD, Liquibase o Design Patterns: Singleton, Factory, Builder, Strategy, Decorator o Web Services: Restful Web-services, SOAP, and Micro-services o Databases: MySQL, Oracle, PostgreSQL, Mongo, Dynamo DB I have remote work experience and strong communication skills & domain expertise includes banking, healthcare, education, and insurance.
    vsuc_fltilesrefresh_TrophyIcon JUnit
    GraphQL
    Java
    Spring Framework
    Elasticsearch
    AWS Lambda
    Spring Boot
    Jenkins
    AWS CloudFront
    Microservice
    Kubernetes
    Spring Security
    PostgreSQL
    RESTful API
    CI/CD
    Amazon DynamoDB
    Apache Kafka
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