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Rating is 4.7 out of 5.
4.7/5
based on 178 client reviews
  2. Development & IT Talent
  3. Back-End Developers
  4. (Current) Spring Security Specialists
  • US$56 hourly

    • 5.0/5
    • (18 jobs)
    I am working as Sr. Java Back-end Developer along with ReactJS experience with front-end. If you are finding someone passionate about reusable, clean code, secure applications and agile methodology follower, then you are viewing right profile!. I have 8+ years of experience in software industry with Java based technologies. I have been involved across all phases of project development life-cycle. I am expert at database design or create base architecture for J2EE web applications. I have hands on experience in the following areas: ➤ Core Java ➤ JavaEE ➤ Alfresco Development (v4.2+) ➤ Spring MVC, ZK (ZKoss) ➤ Spring Security ➤ Spring DATA/JPA/Hibernate ➤ MySQL (database design and complex query expert) ➤ JSP/JSTL ➤ Jasper-Reports/Dynamic Jasper Reports ➤ Twitter bootstrap ➤ Lucene/Solr ➤ Indexing/Searching ➤ Tomcat/JBOSS ➤ GIT/SVN/CVS/P4V(Perforce) ➤ Struts 2.0 ➤ JIRA/Agile Looking forward
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Amazon Web Services
    Docker
    JavaScript
    React
    RESTful API
    Web Service
    MySQL Programming
    Jakarta Server Pages
    AWS Lambda
    Amazon DynamoDB
    Spring Boot
    Spring Framework
    Java
  • US$20 hourly

    • 5.0/5
    • (2 jobs)
    Hi there, If you are looking for Expert in Java / Spring Developer with 5+ years of professional experience in Web Development Experienced in full lifecycle development across multiple applications. I possess a board range of technical skills which I update on a regular basis, allowing me to respond to new issues with considerable speed. If you have an interesting start-up project or you want to improve your existing Java applications then I am ready to help you! I have good communication skills and friendly developer, was working in Agile team and delivering features on a weekly basis. Technology Stack / Tools I have experience with: - Design patterns and Clean Code Structure: SOLID, Singleton Pattern - Frameworks: Spring Framework, Spring Boot - ORM: JPA, Hibernate, JDBC - Databases: PostgeSQL, Oracle, MySQL - Messaging Queue: Kafka, RabbitMQ - Caching: Redis - Build Tools: Maven - Frontend: HTML, CSS, React js - Version Control System: Git, GitHub, GitLab - Documentation: Swagger, Postman - Continious integration: CI/CD, Jenkins - Containerization Platform: Docker - Test: JUnit 5 / Mockito - Architectures : Monolithic, Microservices - Other Technologies: Spring MVC / Spring Data / Spring Security / Spring Web Services / Spring JSP / Servlet API / Spring Cloud / OAuth 2.0 / AWS / WebSocket - Other language : C++ core, Python basics I focus on work that I can be proud! I’m looking forward to work with You. Feel free to invite me to your projects and discuss it further. Regards, Firdavs
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Front-End Development
    Problem Solving
    Communications
    Spring Framework
    Spring Boot
    Spring MVC
    Hibernate
    Database
    PostgreSQL
    Java
    JDBC
    RESTful API
    Git
    MySQL
  • US$55 hourly

    • 4.8/5
    • (160 jobs)
    ⭐⭐⭐ "Unni did excellent work! Trustworthy and capable. Great communication" ⭐⭐⭐ ⭐⭐⭐"Am writing this review to express my deep gratitude and appreciation for Unni's remarkable contribution to our project. Unni has demonstrated an exceptional ability in managing a complex integration task, a challenge that had previously stymied the efforts of five other individuals". ⭐⭐⭐ ⭐ I am senior developer specializing in Back-End and Cloud development. 👑 24 years of professional application development experience ✅ 150 ➕ Jobs ✅ 150 ➕ Reviews ✅ 3000 ➕Hours I have worked with ⭐High Profile clients⭐ in my Career which I have listed some of them below: ✅ FirstTennessee (Fortune 500) ✅ Amex (Fortune 500) ✅ EDB Norway ✅ ICICI Bank My core expertise and experience are: ✅ Android Application development ✅ Web development using Java 8, Spring Boot framework, JavaScript, HTML 5 ✅ Back end development with Java 8, Spring Boot frame work ✅ REST API development using Spring Boot ✅ Desktop development using Swing and JavaFX ✅ Micro services with Spring Boot ✅ Experience in Graph algorithms ✅ Bitcoin and Block chain development using Bitcoinj frame work ✅ Eclipse RCP development ✅ Open source application modification and development ✅ ChatGPT ✅ Java - 12+ years ✅ Java 8 - 5 years ✅ JavaScript - 5+ years ✅ Spring Boot - 3 + years ✅ Spring Framework - 3 + years ✅ React ✅ GraphQL ✅ AWS ✅ AWS Lambda ✅ Cloud Development ✅ AWS Amplify ✅ Aws AppSync ✅ DynamoDB ✅ Quarkus framework ✅ Micronaut ✅ CI/CD ✅ Android - 2 + years ✅ Spring Security - 2+ years ✅ WebRTC , WebSocket - 2+ years ✅ Python - 1+ year ✅ Node.js - 1 + year ✅ Play Frame work - 1 year ✅ GIS Development - 1 year I would like to go the extra mile to meet customer expectations for every project I am doing with 100% quality. I am looking for long-term association with clients to get complete benefits and am interested in achieving their business objectives and goals.
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Apache Kafka
    API Development
    Micronaut
    Spring Boot
    Core Java
    Apache Maven
    Spring Framework
    GraphQL
    Android
    Android App Development
    Python
    Firebase
    Java
    JavaScript
  • US$30 hourly

    • 4.8/5
    • (17 jobs)
    Backend Developer having 18+ years of experience on Java, Spring MVC, Spring Boot, Spring Cloud, RESTful APIs, Hibernate, JPA, Spring Data, Microservices, AWS, GCP, JMS, Docker, Kubernetes, Web Technologies and Integrations. Having good knowledge of Kafka, ETL, Elasticsearch, Logstash, GraphQL, TDD, BDD, Agile, Jira, Git and Jenkins etc. Having experience of working as Full Stack Development using HTML, CSS, JQuery, Javascript, Angular, React Native and Java Based back end including Spring MVC, Struts and REST APIs. Having expertise in databases like, MySQL, Oracle, MongoDB, Cloud Spanner DB and having good knowledge of Cassandra database as well. Very good at design and development of applications and framework starting from old style monoliths to cloud micro services based applications. Very good at problem solving and having a do it attitude. Quite good at communication skills in English. Here are the list of expertise areas what I remember: - Java, Spring MVC, Spring Boot, Spring Cloud, Spring Security, OAuth, Spring Data, Hibernate/JPA and Spring Integration etc. - REST APIs, software integrations, Kafka, Log Stash, Elasticsearch, GraphQL, Microservices, Resteasy, JMS, ActiveMQ etc. - Front end development - Angular 1, HTML5, CSS, JQuery, JSON, Gulp, Bower, LESS, Node.js. React Native. - Testing Frameworks - JUnit, Mockito, TestNG, Cucumber(BDD), Selenium and JMeter etc. - Build and Source Management - SVN, Git, Ant, Maven and Gradle - AWS(EC2, RDS, SQS, S3, IAM), Kubernetes, Knowledge of Serverless development using Lambda Functions and ETL using S3, AWS Glue and Redshift. - GCP(PubSub, Cloud Storage, Google Kubernetes Engine, Cloud Spanner DB) -GitLab, GitHub, Jira, CI/CD using Jenkins, Agile, Scrum, TDD, BDD
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Google Cloud Platform
    RESTful Architecture
    Spring Framework
    AngularJS
    API Integration
    Hibernate
    Java
    Spring Boot
    Microservice
  • US$35 hourly

    • 4.8/5
    • (19 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 Spring Security
    GraphQL
    Java
    Spring Framework
    Elasticsearch
    AWS Lambda
    Spring Boot
    Jenkins
    AWS CloudFront
    Microservice
    Kubernetes
    PostgreSQL
    RESTful API
    CI/CD
    Amazon DynamoDB
    Apache Kafka
  • US$20 hourly

    • 5.0/5
    • (8 jobs)
    Hey Guys! I'm a seasoned 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 (𝗝𝗮𝘃𝗮) 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 with 7 years of strong experience in software development with fluent English (𝗨𝗽𝘄𝗼𝗿𝗸 𝘃𝗲𝗿𝗶𝗳𝗶𝗲𝗱). I've actively participated in all development phases and developed complex web applications by ensuring high performance and responsiveness with the collaboration of cross-functional and remote teams worldwide. 𝗠𝘆 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: Spring boot, Spring Security, Hibernate, Web Services, Java EE, JPA, Spring MVC, Spring Rest, Spring data, REST APIs, AngularJS, ReactJS, HTML5, CSS3, Microservices (AWS, Azure). etc 𝐓𝐞𝐬𝐭𝐢𝐧𝐠: JUnit 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: MySQL, Oracle, Postgresql, Cassandra, NoSQL solutions. 𝗔𝗱𝗱𝗶𝘁𝗶𝗼𝗻𝗮𝗹 𝗦𝗸𝗶𝗹𝗹𝘀: Cloud platforms, CI/CD, Agile methodologies, project management. 𝗜 𝘄𝗼𝗿𝗸 𝗱𝗶𝗹𝗶𝗴𝗲𝗻𝘁𝗹𝘆, 𝗲𝗻𝗷𝗼𝘆 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝗶𝗻𝗴 𝗻𝗲𝘄 𝗶𝗱𝗲𝗮𝘀, 𝗮𝗻𝗱 𝗲𝘅𝗰𝗲𝗹 𝗮𝘁 𝗼𝘃𝗲𝗿𝗰𝗼𝗺𝗶𝗻𝗴 𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗰𝗵𝗮𝗹𝗹𝗲𝗻𝗴𝗲𝘀 𝘁𝗼 𝗰𝗿𝗲𝗮𝘁𝗲 𝗽𝗼𝘄𝗲𝗿𝗳𝘂𝗹, 𝘀𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀. 𝗜𝘁'𝘀 𝗻𝗼𝘁 𝗷𝘂𝘀𝘁 𝗮𝗯𝗼𝘂𝘁 𝘁𝗵𝗲 𝗷𝗼𝗯—𝗶𝘁'𝘀 𝗺𝘆 𝗽𝗮𝘀𝘀𝗶𝗼𝗻. 🏭 𝐈𝐍𝐃𝐔𝐒𝐓𝐑𝐘 𝐄𝐗𝐏𝐄𝐑𝐈𝐄𝐍𝐂𝐄 ► 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲: (Built a secure patient portal, increasing patient engagement by 30%) ► 𝗙𝗶𝗻𝗮𝗻𝗰𝗲: (Led platform development initiatives, boosting transaction processing speed by 25%.) ► 𝗘-𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲: (Enhanced user experience through streamlined checkout process and personalized product recommendations) ► 𝗔𝗴𝗿𝗶𝗰𝘂𝗹𝘁𝘂𝗿𝗲: (Implemented IoT solutions for crop monitoring, leading to a 20% increase in yield efficiency) I actively engage in code reviews, troubleshoot and resolve issues across the stack, thoroughly document solutions, and consistently stay updated on the latest technologies and best practices in web development. I Possess outstanding communication and collaboration skills, adept at excelling independently or as a valuable team member. 🌬️ 𝐅𝐥𝐞𝐱𝐢𝐛𝐥𝐞 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐨𝐧𝐬: 🌍 Global Timezones: I'm adept at working in various global timezones, ensuring smooth project coordination regardless of geographical differences. 👥 𝐃𝐢𝐯𝐞𝐫𝐬𝐞 𝐓𝐞𝐚𝐦𝐬: I thrive in collaborating with diverse, multicultural teams, bringing a breadth of perspectives and ideas to the table. 🔊 𝐄𝐟𝐟𝐞𝐜𝐭𝐢𝐯𝐞 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧: I prioritise transparent and open communication channels, providing regular updates and fostering engagement among stakeholders. 📈 𝐑𝐞𝐬𝐮𝐥𝐭𝐬-𝐃𝐫𝐢𝐯𝐞𝐧 𝐀𝐩𝐩𝐫𝐨𝐚𝐜𝐡: Committed to delivering results efficiently, meeting project milestones, and exceeding client expectations through my remote work experience. 🗣️ 𝐋𝐞𝐭'𝐬 𝐂𝐨𝐧𝐧𝐞𝐜𝐭: Tap the "Invite" button to discuss how we can collaborate effectively on your projects, leveraging my expertise in Full-Stack Web Development and delivering secure, engaging solutions with Java. 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬: #FullStackDev #Java #FrontendDev #BackendDev #WebDev #SecureWeb #JavaEE #SpringFramework #JavaServlets #JSP #JavaScript #HTML #CSS #ResponsiveWebDesign #RESTfulAPIs #SQL #MySQL #PostgreSQL #MongoDB #Authentication #Authorization #SessionManagement #ObjectOrientedProgramming #OOP #TestDrivenDevelopment #TDD #Agile #VersionControl #Git #DevOps #CI #CD #ScalableSolutions #PerformanceOptimization #AWS #Azure #GCP #CloudComputing #React #Angular #VueJS #Bootstrap #UnitTesting #Selenium #Cypress #Monitoring #Alerting #JAMstack #Serverless #API #GraphQL #Microservices #SoftwareEngineer #Docker #Kubernetes
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Web Development
    RESTful API
    Microservice
    Spring MVC
    Spring Data
    Spring Data JDBC Extensions
    Java Collections Framework
    Java Servlet API
    Spring Framework
    Spring Cloud
    Hibernate
    Spring Boot
    Core Java
    Java
  • US$45 hourly

    • 4.7/5
    • (13 jobs)
    An agile and ambitious software engineer with strong technical background who possesses self-discipline, hardworking, quick learning, good team spirit and honesty. That is how I have managed to work over 150+ hours here on Upwork with 100% client satisfaction rate. Software developers with more than 6 years of work experience with clients in developing micro-service architecture based web applications using JAVA, SPRING BOOT, SPRING CLOUD. Expertise: ========== 1- Spring Boot (Maven, Rest Services, Single Deployable and maintainable) 2- Spring Cloud ( Rabbit MQ, Apache Camel, JPA, Zul API GateWay / Outh GateWay, Ribbon ) 3- Spring Security (Authentication, Authorization, Xss, CSRF, Injection, SSL, HTTPs, Encoding, Decoding, Encrypting, Decrypting) 4- API Documentation (Swagger) 5- Software testing 6- DataBase (MySql) 7- Hibernate ORM As senior developer, I maintain, Develop, Test, Improve, Document, Fix Issues, and respond to user requirement. I am a skilled in developing applications through all phases of SDLC, using advanced methodologies, work closely with clients and senior management providing solutions.
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Amazon Web Services
    PostgreSQL
    MongoDB
    Kubernetes
    AWS Lambda
    Angular
    Java
    Microservice
    MySQL Programming
    Spring Cloud
    MySQL
    Spring AMQP
    Java Persistence API
    Spring Boot
  • US$25 hourly

    • 4.8/5
    • (15 jobs)
    Greetings. I'm a Certified Java Developer with more than 7 years of experience. I have expertise in building enterprise-level applications and always meet tight deadlines. My focus has been creating strong backend systems using the Spring Framework, and I've had the privilege of working with multiple SaaS companies. Throughout my career, I've been dedicated to driving innovation and achieving outstanding outcomes in every project. 🌟Certifications🌟 🏅ORACLE Certified Java Programmer - 2022 🏅Spring Boot 3, Spring 6 & Hibernate - 2020 🏅Amazon Machine Learning - 2023 🏅SAS Programming - 2023 🏅Amazon Web Services Associate Developer – 2023 🌟 My Specialization 🌟 ✅ Java (8, 11 & 17): Extensive expertise utilizing recent Java features, including Lambdas, Stream APIs, DateTime APIs, and Functional Interfaces. ✅ Java EE Family: EJB, JPA, Hibernate,Servlets, RESTful Services (JAX-RS), SOAP Services (JAX- WS), Apache CXF & Bean Validation. ✅ Java EE Web: JSF, JSP, Thymeleaf, Bootsfaces & Primesfaces. ✅ Spring Frameworks: SpringBoot, Spring Core, Spring Batch, Spring Data, Spring Cloud ✅ SQL Databases: SQL Server, MySQL, PostgreSQL, MariaDB & Oracle ✅ NoSQL Databases: MongoDB & Redis ✅ AWS: IAM, EC2, S3, RDS, Lambda, Elastic Beanstalk etc. ✅ Message Broker: Kafka and Zookeeper ✅ Message Queues: ActiveMQ & RabbitMQ. ✅ Testing: JUnit, Spring Test, Mockito, Integration Test, Unit Test. ✅ Versioning: GIT, GITHub, BitBucket & VisualSVN ✅ DevOps: Docker, Kubernetes, Jenkins ✅Hands-on design, development, implementation, and optimization 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 Excited to lend my expertise in Development and architectural transformation to visionary projects, I'm eager to join forces with your esteemed team and make a meaningful impact.
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    React
    API
    Angular
    Hibernate
    Software Architecture & Design
    Web Development
    Database Architecture
    JavaFX
    Spring Boot
    Spring Framework
    JavaScript
    Java
  • US$50 hourly

    • 4.9/5
    • (28 jobs)
    🥇 TOP RATED PLUS "I represent the top 3% of performers on Upwork being Top Rated Plus" - Upwork Full-stack developer with +8 years of professional experience, specializing in: ✔ Java, Spring Boot, Spring Data JPA, Spring Security, Oauth2 ✔ Typescript, Angular, Angular Material.. ✔ Javascript Working with me, you will: ✔ Get fast response, clear communication ✔ Beautiful and reusable code, intuitive, and functional interface applying all the best practice ✔ Developer familiar with DevOps practices and CI/CD pipelines. About My Skills: Backend: ✅ JAVA, Java EE, JAX-RS, JUnits ✅ Spring Frameworks (Spring Boot, Spring MVC, Spring Data JPA, Spring Security, etc) ✅ Spring Security, Oauth2, Open ID Connect (OIDC) ✅ Hibernate ✅ Servlet, JUnit, Jackson, Gson, Concurrency in Java ✅ REST API, Swagger / Open API, Quartz, Lombok, REST, JSON, XML ✅ Apache Kafka ✅ Microservices Frontend: ✅ Angular, Angular Material, Typescript ✅ AG Grid, NGX Admin, Ng-Bootstrap, angular-oauth2-oidc ✅ Javascript ✅ HTML, CSS, LESS ✅ TailwindCSS ✅ Bootstrap, ExtJS CI/CD (DevOps) ✅ GIT, GitHub, GitLab ✅ GitHub Actions ✅ Docker ✅ Kubernetes ✅ Jenkins ✅ REST API ✅ AWS Others: Software/tools/others; ✅ Database (MySQL, Oracle, SQL SERVER, T-SQL, DQL) ✅ Nodejs (Express, NPM) ✅ Maven, Gradle, TFS ✅ Oracle SQL Developer ✅ Amazon Cognito ✅ AWS Services ✅ GCP (Google Cloud Platform) ✅ Azure DevOps ✅ Visual Studio, Visual Studio Code ✅ IntelliJ, eclipse, Atom, Android Studio ✅ mRemoteNG ✅TFS, VSTS, SVN ✅ Tomcat ✅ Postman, SoapUI ✅ Unix, Linux ✅ Firebase, Firestore ✅ JIRA, ClickUp ✅ OpenText Documentum xCP ✅ EMC Documentum Composer [Documentum ✅ Composer (Deployer) - version 7.3] ✅ EMC Documentum Administrator (DA - Version 7.3) ✅ ECM Documentum Process Builder (DFC Version 6.7.3) ✅ BOF (Business Object Framework) ✅ dqMan 5 Standard (DCTM Client 6.7) ✅ Websphere ✅ Centera SDK (DELL) ✅ Internet Information Services (IIS) ✅ Administration VMWare, VirtualBox ✅ Install and Format Operate System Feedback: ⚡️"A brilliant experience!. Ginquel has been a superb addition and we will be working long into the future. You are in a safe pair of hands with Ginquel!." - Bluepod Media Worldwide Limited ⚡️"Ginquel is knowledgeable, capable and inspiring wok partner. He makes his research well and suggests the right direction to solve problems. His work ethic is admirable." ⚡️ "Ginquel is delivered beyond expectations. I couldn't be happier." I have worked with high profile Organizations in my career, including the following to illustrate some of them: ✔ BNP Paribas (Revenue: 46.2 billion EUR (2021) ✔ Fujitsu (revenue 4.7 trillion yen (US$41 billion)) ✔ Timwe-Tech (operates in 80 countries) ✔ Accenture (+530K employees worldwide) ...
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Apache Kafka
    Amazon Cognito
    OAuth
    Docker
    Web Development
    Hibernate
    MySQL
    Git
    Spring Boot
    JavaScript
    HTML
    Angular
    Spring Framework
    Java
  • US$30 hourly

    • 5.0/5
    • (41 jobs)
    ✅ Spring, Spring Boot, Spring Cloud, Spring Security ✅ Hibernate, JPA, JDBC ✅ PostgreSQL, Oracle, MySql, MongoDB, Flyway, Liquibase, Redis, Athena, Hazelcast ✅ REST API, SOAP, gRPC, GraphQL ✅ Kafka, RabbitMQ, ActiveMQ, Artemis, AWS SQS ✅ Keycloak, Apache Camel ✅ Microservices architecture: API Gateway, Service discovery (kubernetes), configuration, etc. ✅AWS Services ✅Kubernetes, Docker ✅Elastic Search, Apache Solr ✅Angular, ReactJS ✅Kotlin ✅Apache POI I am a Java professional with 9 years of experience. I have strong understanding and knowledge of the object-oriented approach, software engineering principles, and concepts. I have an incredible attention to detail and perseverance in getting the job done, and done it well.
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Kubernetes
    AWS Development
    REST API
    Angular
    Kotlin
    Spring Boot
    Spring Framework
    Elasticsearch
    Hibernate
    Apache ActiveMQ
    Java
    Apache Kafka
    Apache Solr
    Docker
  • US$35 hourly

    • 4.8/5
    • (21 jobs)
    ✔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
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    AWS CloudFormation
    J2EE
    OAuth
    Stripe
    AWS Lambda
    Hibernate
    API Integration
    Java Persistence API
    HTML
    MongoDB
    Spring Framework
    Amazon Web Services
    Java
    Jakarta Server Faces
  • US$55 hourly

    • 5.0/5
    • (4 jobs)
    💡If you want to build a new website or have some modifications on the existing website... or looking for a script... I can help. 🙏 Hi, My name is Subhash and I am having a Masters in computer applications(MCA). 💡I develop enterprise products and online solutions that help clients for their business and nurture them towards a sale. Unlike my competitors, I do well managed/commented code to ensure that anyone can easily work on it later on. 💡My true passion is creating robust, scalable and cost-effective solutions using mainly Java, Open source technologies. During the last 8 years, I am working with, Back-end______💻Front-end 📍Java/JEE____📍Angular (2 to 9) 📍Hibernate___📍Bootstrap 📍REST/SOAP_📍JavaScript / TypeScript 📍JPA________📍JQuery/Ajax _____________📍HTML5/CSS3/JSP 🍃Spring Framework__Databases____App/Web Servers 📍Spring-core_______📍PostgreSQL_📍 Apache Tomcat 📍Spring MVC_______📍MySQL_____📍 Nginx 📍Spring security____📍OracleDB 📍Spring Data_______📍MSSQL 📍Spring ORM 📍Spring Microservices 🔍Searching______☁️Cloud services 📍ElasticSearch___📍AWS EC2 📍Logstash_______📍AWS RDS 📍Kibana_________📍AWS Lambda 📍Lucene________📍AWS S3 📍Apache Solr____📍AWS ElasticSearch 🎯Are you looking for the Developer with a well-documented bugs-free code?🎯Read more ⬇️ Why me? 📱 Full-cycle custom website development 📱 Responsive website implementation 📱 Accessibility (IST) 📱 API integrations (Google, Facebook, Instagram, Twitter, GitHub, ) 📱 Quality team player / Team lead What do clients appreciate working with me? ✅ Proactivity (I take initiative and responsibility for all what I do) ✅ Trust (I value the trustful relationship and keep it up as a long term goal) ✅ Attitude (I care about your project and business as my own) ✅ Long Term relationship (I strive to make the customer happy and keep the relationship long term) 💡I have experience in software development, leading teams across the globe. Our 5-step Approach 👣 Requirements Discussion + Prototyping + Visual Design + Backend Development + Support = Success! Usually, we customize that process depending on the project's needs and final goals. How to start? 🏁 Every product requires a clear roadmap and meaningful discussion to keep everything in check. But first, we need to understand your needs. Let’s talk! 💯 Working with me, you will receive a modern good looking application that will meet all guidelines with easy navigation, and of course, you will have unlimited revisions until you are 100% satisfied with the result. Keywords that you can use to find me: Java Developer, Web Developer, ElasticSearch Developer, Angular Developer, Team lead, Tech lead, Corporate, IT, Tech, Technology.
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Software Architecture & Design
    RESTful API
    PostgreSQL
    Spring Framework
    Oracle Database
    Hibernate
    Java
    Angular
    Amazon EC2
    Data Access Layer
    Spring MVC
    SaaS
    Spring Boot
  • US$33 hourly

    • 4.9/5
    • (34 jobs)
    Java Tech Lead, 12+ years of experience 🥇 2016-2019 Top Rate on Upwork Delivered 30+ applications to the market for clients from the USA, Western and North Europe. My expertise: ✅ Java main stack: Java8/Java11/Java17, Spring Boot, Spring Security, Spring Data, JPA/Hibernate ✅ Java libraries: JUnit/Mockito/PowerMock, RestAssured, Lombok, JMH ✅ Databases: MySQL, PostgreSQL, MariaDB, SQLite, MongoDB ✅ DevOps: Linux, Docker, DockerHub, Apache Maven/Gradle, Jenkins, Jenkins pipelines, SonarQube, SonarRunner, DigitalOcean, AWS ✅ REST APIs: design, development, documentation (swagger) ✅ Have experience in front-end application delivery: Vue.js-based and React.js-based ✅ CryptoTrading: Binance/Bitfinex/Kraken APIs My achievements: ✅ Developed an application for one of the customers that generate ≈$50K of profit every month ✅ Reduced the DevOps price on one of the projects from ≈$10K per month to several hundred dollars ✅ Increased team size from 1 to 5 people for a few customers based on their needs
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Cryptocurrency
    DevOps
    Jenkins
    JavaScript
    Vue.js
    Docker
    Spring Framework
    Java
    Spring Boot
  • US$60 hourly

    • 5.0/5
    • (19 jobs)
    We (JuneTen Solutions) have 15+ years' hands-on expertise in building software's for various IT solutions. Having experience in providing end-to-end solution includes architect, design, building microservices, DevOps, setting up CI/CD, integration & production environment setup in cloud (leveraging available hosting), security, mail hosting, file/document management, load balancer, service resiliency, video conf, streaming, Quality Assurance, building test automation framework, etc. Technologies/areas that we work on: o Java application o Spring Framework o Spring Boot / Spring Session / Spring JPA / Spring Gateway / Mail o Redis Cache o JDBC o PostgreSQL / My SQL o Mail o REST API o JavaFX Desktop / Mobile application (using Gluon plugin for both Android & iOS) o Android native application o Kafka PubSub / Streaming / Connector o Kafka Cluster setup o Python programming o Python framework like FastAPI, SQL Alchemy, Pydantic o Jitsi Video Streaming o Jitsi Cluster setup o Docker Container / Cluster setup o DevOps end-to-end automation o CI/CD o Source Control (GIT) / Maven / Gradle / Artifacts Repository / Docker Registry o .NET Framework o C# Programming o PHP o Production cluster setup o Quality Assurance o Test Automation using Selenium, Pytest, etc., o ETL Testing/Big Data validation
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Web Hosting
    Apache Kafka
    Spring Cloud
    JavaFX
    RESTful API
    Git
    C#
    Gradle
    Apache Maven
    Docker
    Java
    Spring Boot
    PostgreSQL
    Spring Framework
    JDBC
  • US$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 Spring Security
    PostgreSQL
    Vue.js
    Docker
    Kubernetes
    Hibernate
    Spring MVC
    RESTful API
    Spring Boot
    Microservice
    Apache Kafka
    JavaScript
    Spring Framework
    Redis
    Oracle Database
    Java
  • US$18 hourly

    • 5.0/5
    • (4 jobs)
    I'm a Java developer with 3 years of experience in Enterprise projects. Strong technical skills, capable in developing large multifunctional software and features. High level of responsibility, always in contact with the client to achieve established goals. I have good problem solving skills and have a habit of covering my code with tests. Glad to provide modern programming patterns and edge technical solutions (if needed) and bring additional value to Client's business. Feel free to contact with any questions.
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    JDBC
    JUnit
    Core Java
    Hibernate
    Spring MVC
    Java Collections Framework
    Mockito
    Spring Boot
    PostgreSQL
    JavaFX
    Spring Framework
    Git
    JavaScript
    Java
  • US$20 hourly

    • 5.0/5
    • (10 jobs)
    🚀Building enterprise-grade scalable backend systems 🚀 📊I don't just offer my coding skills; I help you achieve your business goals and thrive. I hold a bachelor's degree in Computer Science and have a proven track record in developing enterprise-grade, scalable backend systems. I love being on the cutting edge of technology, constantly learning and experimenting. However, I always aim to achieve the goal most efficiently, ensuring the solution is flexible and maintainable. ✅ Proficient with Backend Technologies: Java (Spring Boot) and JavaScript (Node.js) 🛢️ Database Development: SQL (SQL Server, MySQL) and NoSQL (MongoDB) 🔌 Microservices and Distributed Systems: Designing and implementing robust architectures ⚡API Development: Secure REST/SOAP API development with JWT, OAuth2, and Keycloak 🛠️ DevOps: Docker, Kubernetes , GitHub Actions and Jenkins for CI/CD ✈️ Travel API Integration: Experience with Travelport, Flight Logic, and Budget Ticket 🔗 Third-Party API Integration: Seamless integration with Slack, e-commerce platforms, banks, and payment gateways ✉️ SMS Gateway: SMPP and SMS Gateway development with Kannel and Twilio ⛓️ Message Queues: Advanced knowledge of RabbitMQ and Apache Kafka ☁️ Cloud Infrastructure: Managing services on AWS and Azure 📶 Monitoring : using Prometheus and grafana dashboard 🎨 Frontend Development: HTML, CSS, and JavaScript (React) My aim is to understand your business objectives and your customers' needs, help your business grow, and improve user experience by building robust, scalable backend systems. I strive to simplify communication barriers by effectively bridging the gap between end-users, designers, and developers. I am here to deliver high-quality backend solutions, provide expert advice, and ensure seamless integration with user-friendly interfaces for the best experience for your business. I will be glad to work with you and put my passion into your project. So let's connect and discuss more details about your business 🚀
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Unit Testing
    RabbitMQ
    Docker
    MongoDB
    Microservice
    SMPP
    SMS Gateway
    DevOps
    MySQL
    Microsoft SQL Server
    REST API
    Golang
    NodeJS Framework
    Spring Boot
    Java
  • US$50 hourly

    • 5.0/5
    • (15 jobs)
    Greetings, I'm Aaron, a software engineer with 10 years experience. I am an expert at Java and Spring Boot, while also being well versed in many other languages, JavaScript, NodeJS, PHP, C++. I know web very well, so HTML, CSS, React, and various other frontend tech. For most projects, we can do fixed pricing. I will let you know the price, when it can be expected to be done, and what milestones we should have. I work on the following sorts of projects: - Creating REST APIs and developing backends - Database design and implementation, optimizations - Building web apps, both internal and external - Integrations between systems, writing custom integration code - Custom automations, usually in code. - IT work, setting up servers and cloud infrastructure, scalable systems - Anything at all related to Java, Spring Boot, and this ecosystem I can do the entire lifecycle for your software, you just tell me the requirements, I'll get it done.
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    JavaFX
    Stripe
    SOAP
    J2EE
    RESTful Architecture
    RESTful API
    Amazon Web Services
    React
    JSON
    XML
    JavaScript
    Apache Maven
    Spring MVC
    Spring Boot
    Java
  • US$30 hourly

    • 4.9/5
    • (78 jobs)
    I have expertise in Blockchain, NFT, ICO, web & App development (IOS & Android). I specialize in PHP core, Laravel, Symfony, Cake PHP, C#, ASP.NET, Drupal, WordPress, custom CMS Development and Databases (MySQL, PostgreSQL and MongoDB). I am also an expert in Python, Angular, MERN, Three JS, Next JS, React JS, Ionic and React Native. Please get in touch to discuss your requirements to get it done in an efficient time and cost. Cheers!
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Google Chrome Extension
    AngularJS
    Laravel
    Node.js
    ASP.NET
    ERPNext
    Flutter
    React Native
    RESTful API
    PHP
    WordPress
    JavaScript
  • US$15 hourly

    • 5.0/5
    • (13 jobs)
    Dear Hiring Manager, I am excited to be part of freelancing community which is the place for finding the great projects with right clients. I have been working with big corporates for 12 years including the biggest US based bank as developer, automation and devOPs engineer. As a software engineer I have worked on high performant and latest technologies based application. Following are my hands on skills and experiences: Primary Language: Java , Java 8,11,17 Secondary Language: Javascript Frameworks : Spring Cloud, Spring Framework, Spring Boot, Spring Kafka, Spring Batch, Hibernate/Spring Data JPA, Spring Security, Oauth2, Spring Rest, ES6, NodeJS, Flyway db deployer for relational DB, Unix Shell Scripts Payment Integration: Stripe Payment Gateway, Network Merchant, USIO, Dwolla Databases : Oracle, Postgress, Cassandra, Redis, MongoDB and ElasticSearch Streaming Tools: Apache Kafka, Kafka Connect Messaging: RabbitMQ, ActiveMQ Front End : Angular , ReactJs Project Mgmt Tool : JIRA Confluence Code Repositories: Github/gitlab/bitbucket Build Repositories : Nexus Sonatype Cloud Platform : AWS EC2 , S3, codedeploy, Heroku, firebase, Cloud Foundry, Spring Cloud Build Tools & Continuous integration: Codeship, circleCI, Jenkins Deployments: Docker and Kubernetes with Spinnaker Agile: BDD and ATDD Automation: selenium, cucumber, serenity BDD, Jbehave, protractor, cross browser automation Internet Of Things Certification: Getting Started with Google Kubernetes Engine
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Java Persistence API
    Jenkins
    Spring Boot
    Apache Kafka
    Docker
    Java
    Spring Framework
    Spring Cloud
    Stripe
  • US$10 hourly

    • 5.0/5
    • (17 jobs)
    *Master of Computer Science and Networking, over 15+ years of experience in software engineering for different programming languages and technologies with design and develop software applications, automation systems +Experienced in software development using various programming languages and technologies Java, Spring/Spring Boot, ReactJS, Angular, Dot.Net, C++ +Experienced in Microservices Architecture software development. +Experienced in migrating an existing legacy system to a newer technologies architecture. +Strong knowledge of OOP, problem solving. +Solid skills: Linux: Ubuntu, Fedora, Solaris, Redhat. + Have worked Camel, SOAP, Rest API, Feign client, Twilio, Firebase, IBM MQ, ActiveMQ Artemis, Redis... + Databases: PSQL, MongoDB, Oracle, MySQL... + Makefile, gdb, purify, Perl, Shell + Have worked (Raspberry Pi, Real-time System, Linux kernel programming) +Good AWS, Kubernetes, Docker, Google Cloud auto build +Good Azune functions, Office 365 mail IMAP +Camel routing, Xml Message exchange +Expert monitoring with Metrics, Actuator, Metrics, Prometheus , Grafana...
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Linux
    SOAP
    C++
    Hibernate
    Java
    AngularJS
    Apache Camel
    React
    HTML5
    Spring Boot
    Perl
    Oracle Database
    RESTful Architecture
    C#
  • US$40 hourly

    • 4.9/5
    • (32 jobs)
    Hi there, My professional career has been based on three distinct yet interrelated tracks: Java Development, App Development, and HubSpot Solution Consulting. In last few years, my focus has been on Java and app development, with a growing emphasis on utilizing HubSpot's capabilities to drive business solutions. In Java development, I have developed my skills in creating robust, scalable applications using Java, Spring Framework, Hibernate, and SQL. My experience includes building and consuming RESTful APIs, building microservice architecture, and deploying applications on cloud platforms like AWS, Azure, and GCP. My proficiency with Git, Maven/Gradle, and JUnit/TestNG ensures that my code is properly managed, tested, and of the highest quality. As a HubSpot Solution Partner, I have years of experience in setting up and optimizing HubSpot CRM and CMS. My experience includes integrating HubSpot with various third-party applications using HubSpot API and tools like Zapier. I thrive on developing inbound marketing strategies, implementing marketing automation, and analyzing data to drive informed decisions. My expertise in HTML, CSS, and JavaScript allows me to customize HubSpot templates and modules to meet certain business needs. My strengths are : HubSpot CRM, Marketing Hub, Sales Hub, Service Hub, CMS Hub, Operations Hub, and HubSpot App Marketplace. In the realm of app development, I excel in developing feature-rich mobile applications using Swift for iOS and Kotlin for Android. My experience also includes cross-platform development with React Native and Flutter, ensuring seamless performance across devices. I am proficient at integrating backend services via RESTful APIs, managing databases with SQLite and Realm, and leveraging Firebase for real-time data and authentication. My skills in JavaScript, HTML, CSS, and Agile/Scrum methodologies also enhance my ability to deliver high-quality apps efficiently. I have excellent troubleshooting and debugging skills, developed over years of hands-on engineering work across many fields. I am a patient, thorough professional with high dedication to detail, committed to delivering tailored solutions that meet and fulfil client expectations. I am available for consulting, software development, testing and debugging, and other services, ranging from short to full-time work and long-term cooperation and support. Thank you for visiting my profile. I look forward to the opportunity to collaborate and contribute to your project's success. Best regards, Parikshit Patel
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    TensorFlow
    Generative AI
    Python
    YOLO
    OpenCV
    React
    Computer Vision
    Spring Boot
    Microsoft Azure
    HubSpot
    Marketing Automation
    Docker
    PostgreSQL
    Angular
    Java
  • US$50 hourly

    • 4.7/5
    • (12 jobs)
    Professional Strengths * Having 10+ Years of experience in the analysis, design, and development of applications primarily using J2EE Technologies and Newgen Products * I am reliable, well organized, and used to working on my own initiative. * I am able to prioritize my workload. * I am comfortable working on my own or as part of a team.
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    RESTful API
    Spring Framework
    Spring Boot
    SQL
    Oracle Programming
    React
    J2EE
    Angular
    Data Structures
    JavaScript
    Python
    Java
  • US$30 hourly

    • 5.0/5
    • (38 jobs)
    As a Senior Spring Boot Developer with ten years of experience, I have experience designing Microservices Architecture, REST API, and Backend Services using Spring Boot. I have experience writing Jenkins CI/CD and automatic deployment on Docker, K8S, and AWS. ++ I follow OOP concepts, SOLID principles, REST Principles, ACID properties, Design patterns, JAVA 8 and 11 features, etc. ++ Experienced in designing Event-Driven Architecture. ++ Experienced in leading a team of 4-8 developers ++ Experienced in participating/managing the code review process I am designing and developing new, innovative, scalable services, collaborating on and assessing technological architecture, coaching, and motivating engineers, and undertaking hands-on coding. CORE COMPETENCIES: ✅ Java-8, 9, 11, 17. ✅ Spring, Spring Boot, Spring MVC, Spring Boot, Spring Security, Hibernate-5, Spring Data JPA, Spring Cloud, Eureka, API Gateway, Feign Client, Hystrix, Spring Batch, LDAP, JWT, OAuth2, Redis. ✅ REST API, Web Service, Swagger, Kafka, WebSocket, Quartz Scheduler. ✅ Mockito, JUnit-5, Maven, Gradle, Apache Camel, JFrog, Kibana. ✅ Bootstrap, Angular, ReactJS, JQuery, JavaScript, Typescript, JSON, AJAX, Thymeleaf, JSP, JSF. ✅MySQL, Oracle, PostgreSQL, MongoDB. ✅Docker, Jenkins, CI/CD, Git, GitHub. ✅AWS (IAM, EC2, Elastic Beanstalk, Lambda, RDS, S3, VPC). ✅ Technical Tutor / Mentor / Teacher: ✔ Teach Java, Spring, Spring Boot, and Spring MVC. 👍🏼 Available full-time on Upwork for any services or consultancy. 👍🏼 Certified Programmer - Sun Certified Java Programmer(SCJP). 👍🏼 Proficient in Quality code and committed to on-time delivery. 👍🏼 Believe in clean code with suitable commenting. My motive is to help customers achieve their business objectives by providing innovative, best-in-class IT solutions and services, which correspond to clients' requirements for 100% or more.
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Kubernetes
    Spring Cloud
    Microservice
    Hibernate
    Websockets
    Swagger
    RESTful API
    Docker
    Java
    Spring Boot
    API Integration
    API Development
    Apache Maven
    Apache Kafka
  • US$25 hourly

    • 4.7/5
    • (47 jobs)
    Thank you for visiting my profile: I'm a full-stack web and mobile developer having hand-on experience on JavaSE(Swing, AWT), JavaEE (Spring MVC, Spring Boot, Maven, Hibernate, JPA, JDBC, Spring Security, Restful APIs, MAPs) and Databases (Mysql, Postgres, Oracle, GraphQL, Neo4J, etc). I am an experienced Java Developer having about 4 years of experience in software development, possess a wide range of knowledge and skills in Software Development using modern technologies, Software Testing, Software Documentation. I am an analytical individual with an outstanding capability to direct a wide range of tasks, strategic planning, software designing, and development processes and procedures, requirements planning, Software mock-up preparation, requirement analysis, and implementation. I am well versed with Java software development, Java, JavaEE, Spring boot Rest Web services, Spring MVC, Spring Security, Spring Data, Hibernate/JPA, various databases(SQL, Non-SQL, and graph DB). I have also working knowledge of front-end technologies like HTML, CSS, JS, jQuery, Angular, and Thymleaf Template Engine. Along with the above skills, I also have a working knowledge of Marketing Strategies, paid Google Ads, YouTube marketing, website designing using WordPress, and Shopify for ECommerce store. I can work with the following tool and technologies. I can work in: JavaSE: 1. Console Application 2. GUI based Application (Swing, AWT) JavaEE: 1. Spring MVC 2. Spring Boot 3. Maven 4. Hibernate/ JPA /JDBC 5. Spring Security 6. JHipster Mobile App: 1. Flutter(Beginner) Front-End Technologies: 1. Angular 7 2. Angular Material Design 3. HTML5 4. CSS3 5. JavaScript 6. JQuery CMS: 1. Wordpress 2. Shopify 3. Wix 4. Squarespace Databases: 1. Mysql 2. Oracle 10g / 11g 3. SQL Server 2014 4. SQLite 5. Postgresql 6. H2 Database 7. Graph DB 8. Neo4J DB 9. MongoDB ⇒ Technical Writing (Software Documentation): ⇾ Writing Technical Software Documents ⇾ Software Analysis and Design (use case diagram, Test Cases, Class Diagram, activity diagram, Flow charts, etc.) ⇾ Do you need quality? ⇾ Do you need assistance with your project? ⇾ Do you want your brain idea to be implemented as a stunning web or desktop application? You are in the right place, contact me. I have always tried for my client satisfaction and client satisfaction is my first priority, for which I can compromise my timing schedule and routine. I can convert your brain idea to a stunning website or desktop application I will try my best to satisfy you with my work, and deliver quality work.
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    ExpressJS
    Flutter
    Spring Framework
    Spring Boot
    Angular
    Software Design
    API
    Software Development
    Front-End Development
    Spring MVC
    Architectural Design
    Technical Design
    Java
    Back-End Development
    Node.js
    React
  • US$35 hourly

    • 5.0/5
    • (28 jobs)
    I'm senior software engineer with very good knowledge of Java, and Business process management. the following list will show my knowledge areas : 1-Business Process Management (BPM). - (Camunda), (Activiti), (JBPM), (Bonita). 2-Business Process Model and Notation (BPMN). 3-Process Modeling and Workflow Design. 4- software engineering - OOP, Design patterns, Agile, Scrum 5- JAVA stack -Java, java EE, JDBC, JPA, Hibernate, -Spring framework including (IOC container, MVC, AOP, security, data , REST and spring Boot, JDBC Template) 6-DATABASE -Oracle(SQL, PLSQL) -SQL server -Mysql
    vsuc_fltilesrefresh_TrophyIcon Spring Security
    Business Process Modeling
    jBPM
    Business Process Management
    Project Workflows
    Process Modeling
    Business Process Model & Notation
    Bonita
    Spring Boot
    SQL
    Hibernate
  • US$37 hourly

    • 5.0/5
    • (5 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 Spring Security
    ZK Framework
    J2EE
    WildFly
    Hibernate
    JasperReports
    Apache Groovy
    Spring Framework
    Java
    PrimeFaces
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