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  • $120 hourly
    ๐Ÿš€ 15+ Years Experience | 10x Engineer | Trusted by Fortune 500 Companies | Expert in Microservices & API Integration Projects ๐Ÿ† Delivered 20+ enterprise Java and SDLC projects with a typical 20% to 50% improvement in DORA metrics (deployment frequency, lead time, MTTR, change failure rate) โญ๏ธ I am a highly skilled Java Developer and DevOps Engineer with 15+ years experience in Back-End Development, specializing in Microservice Architectures and bespoke API Integration. I build robust, scalable solutions and lead complex projects with a focus on clean code and solution quality. ๐Ÿ› ๏ธ What I Offer ๐Ÿ’ผ Value Delivery - I blend technical expertise with business insights to deliver real value fast. ๐Ÿ”„ Spring Boot Microservices - Crafting modular services that scale effortlessly. ๐Ÿ—๏ธ Monolith-to-Microservices - From legacy application to cloud-ready architecture, with up to 85% improved resource utilization and 60% faster feature time-to-market. ๐Ÿ”ง Enterprise Modernization - Revitalizing outdated systems with cutting-edge technology. ๐Ÿš€ Startup MVP Development - From idea to viable products in fast-paced environments. โšก Core Expertise โœ… TDD/BDD/ATDD - Test-Driven Development is at the core of how I work with clients. โ˜๏ธ Microservices & Cloud - Resilient systems using Docker, Kubernetes, AWS, GCP & Azure. ๐Ÿ”„ CI/CD Pipelines - Reliable deployments using e.g. Jenkins, GitLab CI and GitHub Actions. ๐Ÿ”Œ REST API Development & Integration - Building secure, high-performance web services. ๐Ÿ”— Third-Party API Integration - Payment gateways, social media, maps, AI agents and more. ๐Ÿ“Š Agile Development - Transparent, adaptive planning and iterative requirement discovery. โš™๏ธ Software Automation Solutions - Specialist tools and techniques to streamline the SDLC. ๐Ÿค Why Work With Me? I consistently deliver projects on time and within scope, from lean startup apps to large enterprise systems. My collaborative approach ensures solutions align with your business goals and user needs. Having worked as a hands-on developer, software architect, team lead, and startup co-founder, I effectively bridge technical and business discussions while staying current with the latest technologies. ๐ŸŒŸ My Goal To build long-term partnerships by delivering quality results with professional service. If you need a dedicated Back-End Development partner to architect Microservices, integrate complex APIs, or streamline your DevOps pipeline, let's discuss how I can contribute to your project's success! ๐Ÿ“ˆ
    Featured Skill Spring Boot
    AI Consulting
    Automation
    Minimum Viable Product
    Back-End Development
    REST API
    API Framework
    Domain-Driven Design
    Clean Architecture
    Java
    API Integration
    DevOps
    Kubernetes
    API Development
    Agile Software Development
  • $60 hourly
    Experienced backend Java developer with over a decade of expertise in developing and maintaining high-quality software solutions. My career includes roles at Accenture, Credit Suisse and GFT Group. Based in Poland, I have also worked in London with Luxoft and Unibet, a leading company in the gambling industry. Top-rated Upwork freelancer, ranked in the top 5% of performers with a 100% Job Success Score. Proficient in Java, Spring Boot, REST APIs, and cloud technologies (AWS). Adept at working with distributed international teams, emphasizing clean code practices and delivering challenging projects. Programming Languages: Java, JavaScript, Scala APIs & Integrations: RESTful APIs, GraphQL, WebSocket, RabbitMQ, JMS, Kafka Cloud & DevOps: AWS (Cloudformation), Docker, CI/CD (Jenkins, GitHub Actions) Frameworks & Tools: Spring Framework, Spring Boot, Hibernate, JPA Version Control: Git, GitLab, Bitbucket Databases: MySQL, PostgreSQL, MongoDB, Redis Testing: JUnit, Mockito, Cucumber, TDD Others: Observability, Keycloak, Angular, Maven, Bash
    Featured Skill Spring Boot
    CI/CD
    Amazon Web Services
    Spring MVC
    Java Persistence API
    Hibernate
    API
    RESTful API
    SQL
    Docker
    Web Application
    AngularJS
    Java
    MySQL
    Spring Framework
  • $45 hourly
    I am a Java Web Developer, working as freelancer, mainly in Upwork. I am very passionate with Java and JVM technologies. My experience mostly in developing Software As A Service (SaaS) platform, business computing and information system area, using Bootstrap, Angular JS or JSF as UI Components or web framework, Spring Core, Spring MVC or JBoss Seam as Restful API endpoint and or Integration framework, and Hibernate as favorite Java Persistence API (JPA) implementation wrapped by Spring Data component. If my clients requires no casual application or web server, I like to use Spring Boot for simpler development and deployment of the application. I am also interested in database design and software design. I believe that great software not only mediocre work of typing, but also comes from thoughtful process. I believe in TDD, and also believe that tests code must be written, organized as good as the source code it self and is integral part of the source code. I am a quick learner, and In my spare-time, I am writing some personal open source project and small proof-of-concept about java-related stuff in my GitHub public repository. My primary machine is linux desktop with 1TB NVMe SSD and 64GB or RAM. I have macbook pro 15 for testing purpose and to allow me mobile occasionally, if needed. Communication is important in remote work, and for this purpose I have 2 link dedicated internet connections to my workspace. If you need my detailed skill abilities, below is what I have experienced in: - Software Design, Database Design, and microservices/Micro-services/micro services architecture. - JPA 1.0, JPA 2.0, with Hibernate. - Bean Validation Specification with Hibernate Validator. - Dependency Injection with Java DI (JSR-330), Java Context and Dependency Injection for Java EE Platform (JSR-299), and Spring Core as most popular (but non-standard) Java Dependency Injection Framework. - Java Web Framework with Spring MVC and JSP, or Java Server Faces (JSF) with Facelet and Primefaces. - Spring Boot, Spring Data stack. - Generated / scaffolding web application using JHipster. - Java Web / Application server with Tomcat, Wildfly, or Websphere AS. - Logging with SLF4J as a wrapper to Log4J or Logback. - JUnit or Test NG as testing framework. - Ant, Maven or Gradle as build and dependency management tool. - HTML 5, CSS 3, JavaScript, JQuery, Twitter Bootstrap, transparency.js, and angular / angular.js - Third Party API such as Xero API, Open ERP Java API, Braintree Payment API, Stripe Payment API, and Social APIs. - Linux, Mac or Windows. - MySQL, PostgreSQL, Oracle, or Microsoft SQL Server for RDBMS. - Couchbase or Mongo DB for No-SQL solution. - Elasticsearch (ELK) stack or pentaho for data integration, advanced search, reporting and data analysis solution. Thanks, Resa
    Featured Skill Spring Boot
    Spring Framework
    Angular
    Spring Data
    DigitalOcean
    Hibernate
    JHipster
    Java Persistence API
    Amazon Web Services
    Web Service
    SQL
    JavaScript
    Java
  • $56 hourly
    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: โžค Core Java โžค JavaEE โžค Alfresco Development (v4.2+) โžค Spring MVC, ZK (ZKoss) โžค Spring Security โžค Spring DATA/JPA/Hibernate โžค MySQL (database design and complex query expert) โžค JSP/JSTL โžค Jasper-Reports/Dynamic Jasper Reports โžค Twitter bootstrap โžค Lucene/Solr โžค Indexing/Searching โžค Tomcat/JBOSS โžค GIT/SVN/CVS/P4V(Perforce) โžค Struts 2.0 โžค JIRA/Agile Looking forward
    Featured Skill Spring Boot
    Amazon Web Services
    Docker
    JavaScript
    React
    RESTful API
    Web Service
    MySQL Programming
    Jakarta Server Pages
    Spring Security
    AWS Lambda
    Amazon DynamoDB
    Spring Framework
    Java
  • $70 hourly
    I am TOP RATED, a strong Java and PHP developer from the United States. In the past, I worked for the biggest companies such as Oracle, Accenture, First Data, Barclays Bank, etc. I have 20+ years of experience in web development and I highly specialize in - Java (Java EE, Spring, Spring Boot, Spring Annotations, Spring MVC, Spring Security, JMS, Java Struts, Java Servlets, JSP, Hibernate, MyBatis, REST, ActiveMQ). - PHP (Laravel, WordPress) - Javascript (React, Angular, JQuery, Vue.js) - HTML, CSS, Bootstrap, Tailwind CSS - MySQL, Postgres, Oracle, NOSQL, MongoDB. - AWS, WildFly, Apache Tomcat I have built more than 200 systems and I am comfortable working with both existing and new projects. I helped hundreds of clients in their business and I am here to help you as well!
    Featured Skill Spring Boot
    Web Service
    J2EE
    Vue.js
    AngularJS
    HTML
    React
    Laravel
    PHP
    SQL
    Microservice
    Java Persistence API
    Spring MVC
    Spring Framework
    Java
  • $30 hourly
    Mastery of software architecture and software development cycles. In-depth knowledge of the Java / JEE platform and the development of web applications. Mastery of JEE, Java, SOAP & REST web services, JPA, Angular,AngularJS, HTML5, Javascript, CSS 3, Bootstrap, Angular, Spring Boot,SpringBatch. Mastery of Docker , Docker Swarm , Microsevice architecture. Mastery of Java play framework. Mastery of framework Spring. Good knowledge of continuous integration implementation (Gradle,Maven, Svn, Git, Jenkins, Gitlab-CI). Good knowledge of TOMCAT, JBOSS. Good knowledge of database management systems: MySQL, ORACLE, POSTGRESQL. Quick learning ability of new languages and APIs. Experience in agile methodology. Ability to work independently and in a team.
    Featured Skill Spring Boot
    Oracle PLSQL
    Jakarta EE
    Microservice
    Angular
    API
    Apache Maven
    Continuous Integration
    Git
    Jenkins
    Java
    JetBrains IntelliJ IDEA
    Docker
    Linux
    PostgreSQL
  • $20 hourly
    I am a self-driven Full-stack developer with 6+ years of rich experience in IT Industry and I have worked on modern edge technologies. I have expertise in Large scale Fault-tolerance System design from the scratch and ability to provide an end to end solution. Delivered the solutions for various work domains like Online food ordering systems, Financial analytics platforms, Social service platforms, various tracking systems like Driver tracking, Route Optimization, Inventory and Stock management systems etc. My Key Skill sets are : Java J2EE Spring(Boot, MVC, Security), Hibernate, JSP, JSF, JPA, GCP, Kubernetes, Firebase, WebSocket, Jenkins, Cloud Functions, AWS Lambda.
    Featured Skill Spring Boot
    NetSuite Development
    Intuit QuickBooks
    Salesforce
    Websockets
    Firebase
    Angular Material
    AWS Lambda
    Angular
    Jenkins
    Google Cloud Platform
    Kubernetes
  • $35 hourly
    I have 8+ Years of experience as a Full - Stack Java/spring Developer with diversified exposure in analysis, design, development and implementation of web-based applications. Extensive knowledge on Java SE including Collection, Threading and Core Java. Good experience on Java EE technologies such as Servlet, JDBC, JSP, JSTL. Strong programming skills in designing and implementation of multi-tier applications using web-based technologies like Spring MVC and Spring Boot. Good Knowledge and worked on Amazon Web Service (AWS) EC2,S3 etc.. and Continuous Integration. Excellent knowledge on Spring Core such as Dependency Injection, Annotations and XML based Configurations. Extensively worked on Spring JDBC,Batch,Data Spring Hibernate ORM and JPA Expert in e-commerce platform for automation like amazon, Etsy, Walmart, eBay, big-commerce. API integration and automation sync tool ETL. Proficient at designing dynamic web applications using HTML5, CSS3, JavaScript, jQuery, AJAX, JSON with responsive web applications using Bootstrap.
    Featured Skill Spring Boot
    Amazon
    API Development
    Application Integration Software
    Automation
    Java
    Amazon MWS
    Web Development
    Spring Framework
    DevOps
    Dashboard
    API Integration
    Technical Support
    Amazon Web Services
  • $20 hourly
    I am having around 12+ years of experience as a Java backend developer. I am holding a Masters degree in Computer Science(MCA). I am seeking a challenging position in Software profession where I can make a significant contribution using the experience & skill that I have acquired. PROGRAMMING LANGUAGES & TECHNOLOGIES USED: - backend: Java 8+, Spring-Boot (3.*), Sping Cloud, Eureka Server, Feign Client, Spring Cloud Config Server, Spring Security, Authentication, Restful Web-services, Micro-services, JWT Token Implementation, Lombok, Swagger. - Frontend: Html, CSS, Javascript, Angular, and Ajax - Databases: MySQL, Oracle, PostgreSQL, Mongo, Dynamo DB - Design Patterns: Singleton, Factory, Builder, Strategy, Decorator
    Featured Skill Spring Boot
    RESTful API
    J2EE
    Jira
    XML
    SQL
    CSS
    HTML
    Angular
    JavaScript
    Core Java
    Spring Framework
    Hibernate
    Java
    Spring MVC
  • $40 hourly
    Experienced Java Developer | Spring Boot | Microservices | AWS | CI/CD With 7 years of hands-on experience, I specialize in developing high-traffic applications primarily using Java. My expertise lies in building high-throughput applications utilizing the Spring framework and its related projects, including Spring Boot, Spring Reactive, Spring Security, and Spring Data. I have worked on systems using both monolithic and microservice architectures, developing complex applications used by millions of users. In these systems, I have utilized Kafka for stream processing, various message queues such as ActiveMQ and Amazon SQS for efficient communication, and Redis for caching. Additionally, I have worked extensively with database technologies like MySQL, PostgreSQL, and MongoDB to manage and store data effectively. I have successfully deployed applications both on-premises and in the cloud (AWS), leveraging Docker and Kubernetes for efficient containerization and orchestration. My experience extends to setting up CI/CD pipelines, ensuring smooth and automated deployment processes. If you are looking for a skilled and reliable Java developer to bring your project to life, let's connect and discuss how I can contribute to your success.
    Featured Skill Spring Boot
    Terraform
    Mavenlink
    Linux
    CI/CD
    Hibernate
    Apache Camel
    Docker
    Java
    Jenkins
    Spring Framework
    Amazon Web Services
    React
    MySQL
    PostgreSQL
  • $40 hourly
    ๐–๐ž๐ฅ๐œ๐จ๐ฆ๐ž ๐ญ๐จ ๐Œ๐ฒ ๐๐ซ๐จ๐Ÿ๐ข๐ฅ๐ž! ๐€๐›๐จ๐ฎ๐ญ ๐Œ๐ž: I am a seasoned senior software engineer with a decade of hands-on experience in the software development industry. My forte lies in transforming concepts into robust software solutions that precisely align with customer requirements. Notably, some of the software products I've developed have been used by prestigious Fortune 500 companies, including Walmart and Mastercard. Throughout my career, I've honed my skills in developing applications that can seamlessly handle millions of users, mastering the art of scalability, robustness, and optimisation. โ‡๏ธ ๐— ๐˜† ๐—˜๐˜…๐—ฝ๐—ฒ๐—ฟ๐˜๐—ถ๐˜€๐—ฒ: My technical skills spans a wide array of technologies and frameworks: ๐Ÿ”ท Languages: Java, Spring Boot, Node Js, React JS, Angular and Python ๐Ÿ”ท Frameworks: Spring Boot, Nest Js, Express Js, Django ๐Ÿ”ท Clouds : AWS, Azure and GCP. ๐Ÿ”ท Databases: Sql Server, Mysql, MongoDB, Postgres ๐Ÿ”ท Web Designing : Html5, CSS3, Bootstrap, Material UI. While these are my primary areas of expertise, I'm always eager to embrace fresh challenges. As a software developer, I firmly believe in the power of adaptability to tackle diverse problems. ๐Ÿ’ซ ๐— ๐˜† ๐—ง๐—ฟ๐—ฎ๐—ฐ๐—ธ ๐—ฅ๐—ฒ๐—ฐ๐—ผ๐—ฟ๐—ฑ: You can witness some of my success stories through the reviews on my Upwork profile. I'm keen to schedule a call to explore how I can contribute to your vision. Thank you for considering me for your software development needs. ๐Ÿ”” ๐—œ๐—ณ ๐˜†๐—ผ๐˜‚ ๐—ต๐—ฎ๐˜ƒ๐—ฒ ๐—ฎ๐—ป๐˜† ๐—พ๐˜‚๐—ฒ๐˜€๐˜๐—ถ๐—ผ๐—ป๐˜€, ๐—ณ๐—ฒ๐—ฒ๐—น ๐—ณ๐—ฟ๐—ฒ๐—ฒ ๐˜๐—ผ ๐—ฐ๐—ผ๐—ป๐˜๐—ฎ๐—ฐ๐˜ ๐—บ๐—ฒ! ๐—Ÿ๐—ฒ๐˜'๐˜€ ๐—ฐ๐—ผ๐—น๐—น๐—ฎ๐—ฏ๐—ผ๐—ฟ๐—ฎ๐˜๐—ฒ ๐—ฎ๐—ป๐—ฑ ๐—ฏ๐—ฟ๐—ถ๐—ป๐—ด ๐˜†๐—ผ๐˜‚๐—ฟ ๐—ถ๐—ฑ๐—ฒ๐—ฎ๐˜€ ๐˜๐—ผ ๐—น๐—ถ๐—ณ๐—ฒ!
    Featured Skill Spring Boot
    Apache Kafka
    Hibernate
    Spring MVC
    Unit Testing
    Automation Framework
    Cypress
    NodeJS Framework
    Spring Batch
    Microservice
    PostgreSQL
    MongoDB
    Docker
    Spring Cloud
    MySQL
    Jenkins
    React
    Python
    Java
  • $50 hourly
    I'm an Oracle-certified Java expert with much experience in backend technologies, including but not limited to Spring Framework, JPA, MongoDB, etc. I'm also an AWS-certified and Kubernetes-certified DevOps engineer; hence, I can help if you need additional infrastructure resources. With 20,000+ hours of work on Upwork alone, I believe I can make a meaningful contribution to your project. As a side note, if you do a Google search with the keywords "spring bean", "spring boot interview questions", or "maven integration testing", you'll find my writings at the top spots.
    Featured Skill Spring Boot
    Terraform
    Docker
    Web Service
    Hibernate
    RESTful API
    MySQL
    API
    Kubernetes
    Amazon Web Services
    Spring Framework
    Java
  • $27 hourly
    Hey folks๐Ÿ‘‹ Welcome to my Upwork profile! I'm a highly-skilled Backend developer. During my work, I always keep attention to writing clean and high-quality code. Always try to make a positive impact on a project to achieve long term strategic goals. Working very well in cross-teams. I'm interested in solving various difficult tasks and am ready to deal with most projects related to my stackโคต๏ธ Backend: - Java 8+, JavaEE, JavaSE, Socket - Spring (Spring boot, Spring JPA, Spring MVC, Spring data, Spring security and other Spring modules) - Hibernate, JOOQ, JDBC - SQL (MySQL, MS SQL, PostgreSQL, SQLite) -NoSQL (MongoDB, Elastic, Redis, Firebase) - Time Series(InfluxDB, TimescaleDB, Prometheus) - AWS (S3) - Migration (Liquibase, Flyway) - Thymeleaf - QA(JUnit, Mockito, Karate Integration Test, Wiremock) - Auth Server(FusionAuth, Keyclock) - Kubernetes(Rancher Api, java native client), Proxmox - RabbitMQ, Stripe, Vault, microservice architecture Frontend: - JSP, HTML, XML Others: - Git - Docker - Postman - IntelliJ Idea Tools: - Jira, Asana, Trello, ClickUp - Slack, MS Teams, Skype I'm very interested in solving various difficult tasks and am ready to deal with the most projects related to my stack, so do not hesitate to contact me!
    Featured Skill Spring Boot
    MySQL
    Jakarta Server Pages
    Spring MVC
    JDBC
    Hibernate
    Java
    SQL
  • $35 hourly
    I have 8 years experience of backend development. During this time I worked in many IT companies and projects. I develop enterprise applications on Java. My technology stack includes: Java; Multithreading; SpringBoot; Spring Security, JWT, OAuth 2, Keycloak; Spring Data JPA, Hibernate; Docker, Kubernetes; Microservice architecture; REST API development; AWS infrastructure; Unit tests; Maven; Jenkins; Git, Bitbucket; Apache Kafka; MySQL, PostgreSQL, MongoDB, Redis. I usually work using Jira, Confluence, Slack, IntelliJ IDEA. I prefer to work in team, so Agile and Scrum are my best friends. Also I can create websites and landing pages using different CMS. And I'm an expert in WordPress. I know PHP, MySQL, JavaScript, jQuery, HTML5, CSS3, Smarty, and I have other skills. I am an adherent of the purity code. I am a prudent and meticulous person. You can watch my sources on Bitbucket: bitbucket.org/gribozi
    Featured Skill Spring Boot
    Apache Kafka
    RESTful API
    OAuth
    HTML
    JUnit
    Apache Maven
    WordPress
    CSS
    Core Java
    Kubernetes
    Docker
    Git
    Java
    PostgreSQL
  • $75 hourly
    I am an Oracle certified developer with experience in enterprise software development. If you are looking for a valuable team member or an expert architect - I can help! - I am experienced in Java, Spring ecosystem and TypeScript, React. - I have software architect experience with microservice architecture. - Clean, readable code is really important to me. - I believe in regular communication so we can be on track.
    Featured Skill Spring Boot
    Apache Kafka
    Java
    Cucumber
    Selenium WebDriver
    RESTful API
    Microservice
    Kubernetes
    Git
    React
    Jenkins
    TypeScript
    Docker
  • $18 hourly
    I am a Full-stack developer / lead, or solution architect with 10+ years of experience and have the expertise to complete many projects . I have very good experience working on full applications that require scalable architecture to design and develop, having worked on all stages of development like design, development to deployment with proven experiences in development. My passion and inclination toward the programming and coding, lead me to Upwork, a platform where I can put my knowledge, experience, passion and geekiness together and define and set my own limits. My expertise:- โœ”๏ธ Front-end Development JavaScript / React / React-Native / Redux / Angular / Ionic / Vue โœ”๏ธ Back-end Development Python / Node / Express / Java Spring boot / REST API / Golang / Laravel /Nest.js / Next.js โœ”๏ธ Databases PostgreSQL / MySQL / MongoDB / DynamoDB โœ”๏ธ Data Engineering Data Pipelines / ETL / Hive / Spack / Kafka / Drill โœ”๏ธ AWS Cloud Services Amplify / Lambda / EC2 / CloudFront / EC2 / S3 Bucket / Microservices โœ”๏ธ Responsibilities and Contribution: โ€ข Involved in various stages of software development life cycle including - development, testing, and implementation. โ€ข Analyzing and validating the functional Requirements. โ€ข Suggesting a better approach and preparing detailed documents and estimating the time required for the delivery system periodically. โ€ข Configuration and Customization of the Application as per the given Business requirement. โ€ข Used the sandbox for testing and migrated the code to the deployment instance thereafter. โ€ข Analysis of requirements Involved in the development of modules. โ€ข Discussing on requirements, feasibility of the changes, and impact on the current functionality onsite. I have excellent time management skills to define priorities and implement activities tailored to meet deadlines. My aptitude & creative problem solving skills help applying innovative solutions to complex issues. I am always eager to offer the value addition to customers by providing them with suggestions about the project.
    Featured Skill Spring Boot
    React
    React Native
    Apache Spark
    Angular 10
    Apache Kafka
    AWS Lambda
    Golang
    Apache Hive
    NodeJS Framework
    Vue.js
    Amazon EC2
    Python
    Java
  • $25 hourly
    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
    Featured Skill Spring Boot
    Agile Project Management
    Code Review
    Jira
    Bash Programming
    Hibernate
    JUnit
    Spring MVC
    Microservice
    Java Persistence API
    MongoDB
    Thymeleaf
    Java
    MySQL
  • $30 hourly
    I'm an Experience ๐๐š๐œ๐ค-๐„๐ง๐ ๐‰๐š๐ฏ๐š Developer with 8+ ๐ฒ๐ž๐š๐ซ๐ฌ of experience(Mostly in Fintech domain). Please have a look at my ๐ญ๐ž๐œ๐ก-๐ฌ๐ญ๐š๐œ๐ค and ๐ฉ๐ซ๐ข๐ฆ๐š๐ฅ ๐ž๐ฑ๐ฉ๐ž๐ซ๐ญ๐ข๐ฌ๐ž: ๐๐ซ๐จ๐ ๐ซ๐š๐ฆ๐ฆ๐ข๐ง๐  ๐ฅ๐š๐ง๐ ๐ฎ๐š๐ ๐ž๐ฌ: Java ๐…๐ซ๐š๐ฆ๐ž๐ฐ๐จ๐ซ๐ค๐ฌ:, Spring Boot, Spring Core, Spring Web Services, Hibernate, Apache Wicket. ๐ƒ๐š๐ญ๐š๐›๐š๐ฌ๐ž๐ฌ: MySQL, Oracle. ๐๐ฎ๐ข๐ฅ๐/๐ƒ๐ž๐ฉ๐ฅ๐จ๐ฒ: Maven. Here you can review ๐ฆ๐ฒ ๐›๐š๐œ๐ค๐ ๐ซ๐จ๐ฎ๐ง๐: โ€ข Experience in the development of Web Services based on ๐‘๐„๐’๐“ and Soap โ€ข Experience in SOA Architecture and excited to work on Micro services architecture. โ€ข Experience in working with ๐‰๐š๐ฏ๐š ๐Ÿ๐ซ๐š๐ฆ๐ž๐ฐ๐จ๐ซ๐ค๐ฌ such as ๐’๐ฉ๐ซ๐ข๐ง๐ , ๐‡๐ข๐›๐ž๐ซ๐ง๐š๐ญ๐ž; โ€ข Experience in working with Core JavaScript; โ€ข ๐’๐ฉ๐ซ๐ข๐ง๐  ๐ซ๐ž๐ฅ๐š๐ญ๐ž๐ experience, including ๐‚๐จ๐ซ๐ž, ๐๐จ๐จ๐ญ, ๐ƒ๐š๐ญ๐š, ๐Œ๐•๐‚, ๐’๐ž๐œ๐ฎ๐ซ๐ข๐ญ๐ฒ; โ€ข Experience in working with ๐‘๐ƒ๐๐Œ๐’, mostly ๐Œ๐ฒ๐’๐๐‹, Oracle; โ€ข Familiar with project development end-to-end phases such as ๐š๐ง๐š๐ฅ๐ฒ๐ฌ๐ข๐ฌ, ๐๐ž๐ฌ๐ข๐ ๐ง, ๐๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ, ๐ญ๐ž๐ฌ๐ญ๐ข๐ง๐ , and Deployment; โ€ข Willingness to analyze various problems; โ€ข Able to ๐œ๐จ๐ฆ๐ฆ๐ฎ๐ง๐ข๐œ๐š๐ญ๐ž with different types of people; โ€ข Experience in working in remote and in-house teams using ๐’๐‚๐‘๐”๐Œ ๐ฆ๐ž๐ญ๐ก๐จ๐๐จ๐ฅ๐จ๐ ๐ฒ; โ€ข Upper-intermediate level of ๐„๐ง๐ ๐ฅ๐ข๐ฌ๐ก, great speaking and writing skills. I always dig into the project, try to understand it ๐š๐ฌ ๐๐ž๐ž๐ฉ ๐š๐ฌ ๐ฉ๐จ๐ฌ๐ฌ๐ข๐›๐ฅ๐ž. I'm ๐ก๐š๐ซ๐-๐ฐ๐จ๐ซ๐ค๐ข๐ง๐ , always interested in the ๐ฉ๐ซ๐จ๐ฃ๐ž๐œ๐ญ ๐ฌ๐ฎ๐œ๐œ๐ž๐ฌ๐ฌ, ready to solve any hard issue and even stay late to complete the work. That's why I have already successfully completed several complex projects and would love to help with yours. Lets contact and have productive cooperation!
    Featured Skill Spring Boot
    Core Java
    Android App Development
    Spring Framework
    Jakarta Server Faces
    JavaScript
    Apache Wicket
    Hibernate
  • $25 hourly
    A top-rated expert in crafting end-to-end solutionsโ€”from UI design to DevOpsโ€”that are beautiful, robust, scalable, and cost-effective. I work at the intersection of AI Agents and Automation, App Development, Product Design, and Cloud Infrastructureโ€”helping startups launch fast and established teams streamline and scale. ๐Ÿš€ What I'm Best At: ๐Ÿ”น Web App Development: ๐Ÿ”ง UI/UX Design: Figma, Prototyping, Web Accessibility ๐Ÿ–ฅ๏ธ Frontend Development: Next.js, Angular, React, Vue, Vaadin ๐Ÿ’ป Backend Development: Java (8โ€“20+), Kotlin, Python, Node.js, NestJS โš™๏ธ Java Ecosystem: Spring Boot, Spring MVC, Spring Security, Spring Data JPA, Spring Cloud, Spring AI, Micronaut, Hibernate, Apache Camel, Apache Kafka, Keycloak ๐Ÿ Python Frameworks: Flask, FastAPI ๐Ÿ“ฆ Other: Ktor, JavaFX ๐Ÿ’พ Databases: MySQL, PostgreSQL, MongoDB, IBM DB2, Oracle, MariaDB ๐Ÿ”ง Tools: JDBC, Maven, Gradle, XSL, JSTL, JSP ๐Ÿ“Š Observability: Elastic Stack โœ… Software Testing: JUnit, Mockito, Cucumber, Selenium, Concordion โ˜๏ธ DevOps & Cloud: AWS, GCP, Docker, Kubernetes, Bash, Shell, Ansible, Terraform, Chef, CloudFormation, Jenkins, GitLab CI, Pulumi (IaC) ๐Ÿ”น Mobile App Development: ๐Ÿ“ฑ Frameworks: Flutter/FlutterFlow/Dart, React Native, Expo, Android and iOS native bridging ๐Ÿ”’ Authentication & Notifications: Firebase Auth, Push Notifications, FCM, ๐Ÿ’พ Offline & Real-Time: Offline Support, Real-time Sync, Secure Storage ๐Ÿ”น AI Chatbot Development & Generative AI Integration: ๐ŸŽค Voice Bots: Twillio, ElevenLabs and more ๐Ÿ—ฃ๏ธ Chatbots: Rasa, ChatterBot, Amazon Lex and more ๐Ÿง  Automation & Integration: n8n, Zapier, Make ๐Ÿ” Vector Databases for RAG: Chroma, Pinecone, Qdrant, pgVector ๐Ÿ“ฆ Other: Document conversion to Audiobook, Offline form docs to Live Surveys, Creating Social Media Posts from Documents ๐Ÿ”น E-commerce / Shopify Development: ๐Ÿ”ง Shopify Liquid: Theme customization ๐Ÿ”— Shopify APIs: Storefront API, Admin API integrations ๐ŸŒ Headless Shopify: Hydrogen, Next.js, or custom React frontend ๐Ÿ’ณ Payment Integration: Payment gateway and custom checkout flows โšก Performance Optimization: Conversion rate optimization (CRO) ๐Ÿ”น Why Choose Me: โ€บ I treat client success as my own, caring for their project like it's my own โ€บ Excellent and Bilingual English communication: I make sure to keep you updated โ€บ Dedicated to clean, beautiful work: Well-documented work that any new dev can jump on, and has a low maintenance cost. โ€บ AI-embedded workflow: Reduces cost and time to ship, giving me the edge over traditional dev shops ๐Ÿ”น Letโ€™s Talk Need a mobile app MVP, or to modernize your existing Enterprise app, an AI developer to build an intelligent chatbot or agent, or a high-converting Shopify store? Letโ€™s discuss how I can help.
    Featured Skill Spring Boot
    Figma
    Kubernetes
    Mobile App Development
    Flutter
    React Native
    n8n
    Chatbot Development
    Artificial Intelligence
    AI Development
    AWS Application
    React
    JavaScript
    Python
    Java
  • $24 hourly
    As a highly experienced Java developer with a decade of experience, I am well-versed in Spring and Spring Boot, as well as Spring Security and other related technologies. With a career spanning several years in Java development, I have honed my skills in designing and implementing efficient, scalable, and maintainable software solutions. My expertise in standalone, service-oriented, and microservices architecture allows me to design and build robust and scalable systems. I am also familiar with MVC technologies and have experience working with message queues such as Kafka and RabbitMQ. As a proactive problem-solver, who is dedicated to delivering high-quality results, I am able to work both independently and as a part of a team, and possess strong communication skills. I have experience with test-driven development and working with Agile methodologies. I am always eager to learn new technologies and stay up-to-date with industry developments. As a Senior Java Developer, my ultimate goal is to architect elegant solutions that not only meet but exceed client expectations. I'm eager to take on new challenges, use my expertise to make a real difference, and assist businesses in reaching their goals.
    Featured Skill Spring Boot
    CI/CD
    Angular
    MVC Framework
    Apache Kafka
    Spring Framework
    Java
    RESTful API
    Microservice
    SQL
    PostgreSQL
    Redis
    Hibernate
  • $25 hourly
    Full-Stack Java Developer | Expert in Spring, Angular, Microservices, and Cloud Computing | Enthusiastic Open Source Contributor | Transforming Ideas into Cutting-Edge Technology Solutions | Connect with Me to Elevate Your Projects | Available for New Opportunities
    Featured Skill Spring Boot
    GraphQL
    Angular
    React
    RESTful API
    Spring Framework
    CI/CD
    Microservice
    Hibernate
    Java
  • $50 hourly
    -------------------------------------------------------------------------------------------------------------- I have 8+ years of experience with web development My main skills: โœ” Java, Spring Boot, Kotlin, Spring MVC, Spring Security, Hibernate โœ” K8s, Docker,AWS, GCP โœ” MySql,PostgreSQL,DB2, SQL Server โœ” MongoDB โœ” Html, CSS, JavaScript, JQuery, Ajax, Sass, Json, Angularjs, Angular2, Rest API โœ” API Integration, API Development, API Documentation โœ” Git, Bitbucket, SVN โœ” Maven, Gradle โœ” Jasper Technologies are not limitations for me as I am very much interested and quick to learn new technologies. Client satisfaction is my number one priority. I always work to my fullest capacity and make sure that my clients are always happy. I understand them and their requirements which helps me to do everything within my client's budget and time. To establish further healthy relationship allow me to provide satisfied work with meeting your expectations successfully and has the potential to maintain the long-term relationship.
    Featured Skill Spring Boot
    PostgreSQL Programming
    MySQL Programming
    MySQL
    Hibernate
    Laravel
    jQuery
    Java
    PHP
    Kotlin
  • $20 hourly
    I have worked in springs framework, android studio, wordpress. My strengths are html, css,php, core java,spring framework, shopify I have worked as associate java developer with Anand Rathi. I was associated with Vision Infotech as web developer. Why Choose me - I give my 100% to achieve client satisfaction rate. - Competitive in cost while ZERO compromise in Quality. - Strong technology competency & awareness of new technologies. - I offer clear, concise and regular communication during every step of your project. - I always deliver on time and on budget , even my clients say I am quick. I am always ready to experiment and mould myself according to client requirements. I am here to share my vision with you..
    Featured Skill Spring Boot
    Microservice
    API
    jQuery
    HTML
    WordPress
    Shopify
    Payment Gateway Integration
    Java
    JavaScript
    PHP
    HTML5
    Spring Framework
    MySQL
    CSS 3
  • $40 hourly
    I am Nensi, an Oracle Certified Java Programmer with 6 years of experience working on different projects mainly focused on backend with Java / Spring Boot and desktop applications using JavaFX. I love what I do and that is why I give my 100% in each project that I work on. My skills include the following: Languages and Frameworks ๐Ÿ›  - Java - JavaFX - Kotlin - Spring Boot - REST / SOAP - Hibernate - SQL - HTML + CSS + Bootstrap Databases ๐Ÿ›  - MySQL - SQLite - Oracle - Firebase - PostgreSQL Tools ๐Ÿ›  - Eclipse - IntelliJ - Postman - Maven / Gradle - Xampp - GitKraken - Swagger - Scene Builder - Apache Karaf - Nexus - Jira I am a hard worker and I always deliver. Contact me and you will get the job done.
    Featured Skill Spring Boot
    SOAP
    Kotlin
    RESTful API
    Standalone Application
    HTML5
    Microsoft SQL Server Programming
    Apache Tomcat
    English
    JDBC
    JavaFX
    SQL
    Java
    MySQL
  • $40 hourly
    Want to build the most resilient, fast, documented, and secure systems? To refactor your systems so that they follow today's standards in terms of speed and security? Build Apps that generate revenue because users love them? I have worked mostly with Fintech companies. As such, I give high priority to the security and speed of applications that I build. I have built systems that are used by hundreds and others more than hundreds of thousands of users. I have 6+ years of track record working on projects in varying industries: Fintech, EdTech, Fitness and Wellness, Gaming, and many more. ****************************** REASONS TO WORK TOGETHER *********************************** โœ… Give utmost importance to the respect of deadlines. โœ… Collaborative with excellent communication skills. โœ… Strong Test Driven Development Advocate. โœ… Do not need to be spoon-fed with detailed user stories. From the problem posed, I can easily devise and model multiple solutions from which we can choose. โœ… Eager to learn anything required for the successful completion of the project. I am a fast learner, so this task will be done at a light speed. โœ… Intellectually honest. I will not accept a task I know I am unable to do. **************************** THINGS I CAN HELP YOU WITH ******************************** โœ… Rest APIs โœ… GraphQL APIs โœ… Microservices Architecture Designs โœ… Unit and Integration tests โœ… Desktop applications โœ… Bugs Resolution โœ… System Reviews *************************** SOME TECHNOLOGIES I MASTER ******************************* โœ… Java 8-21 โœ… Spring MVC โœ…Ktor โœ… Spring Webflux โœ… Spring Cloud โœ… Spring Security โœ… GraphQL โœ… TeamCity โœ… Docker โœ… AWS โœ… RabbitMQ โœ… Kafka โœ… Jenkins โœ… Maven โœ… Gradle ********************************* CLIENT TESTIMONIALS ************************************ "The freelancer was professional, organised, courteous, very communicative, and was passionate about getting the job done to specification and requirements. If only all freelancers were like this. Florian went above and beyond with his effort to complete the job and I would not hesitate to recommend him to others." "We love to work with Florian. Fantastic work. Fast, knowledgeable, and self-starter. It is a great experience working with him and he was very professional with excellent communication skills and time management skills." ABOUT ME As far as I can remember, I have always wanted to be a programmer. More than a job, it is a passion for me. I am a big Japanese anime fan. Colleagues and friends used to call me Saitama because, like him, I work very hard when I want to master a skill. I will be delighted to work with you. INVITE ME, and together, let's build the greatest software products.
    Featured Skill Spring Boot
    Website Maintenance
    Website Audit
    Website Copywriting
    WordPress Website
    Figma
    Webflow
    Website Security
    Website
    WordPress
    Web Development
    SQL
    Docker
    Kotlin
    Web Application
  • $80 hourly
    **๐™‡๐™š๐™–๐™™ ๐™๐™ช๐™ก๐™ก ๐™Ž๐™ฉ๐™–๐™˜๐™  ๐˜ฟ๐™š๐™ซ๐™š๐™ก๐™ค๐™ฅ๐™š๐™ง**๐™Ž๐™š๐™ฃ๐™ž๐™ค๐™ง ๐™Ž๐™ค๐™›๐™ฉ๐™ฌ๐™–๐™ง๐™š ๐˜ผ๐™„ ๐˜ผ๐™ง๐™˜๐™๐™ž๐™ฉ๐™š๐™˜๐™ฉ **๐™Ž๐™š๐™ง๐™ซ๐™ž๐™˜๐™š-๐™Š๐™ง๐™ž๐™š๐™ฃ๐™ฉ๐™š๐™™ ๐˜ผ๐™ง๐™˜๐™๐™ž๐™ฉ๐™š๐™˜๐™ฉ๐™ช๐™ง๐™š (๐™Ž๐™Š๐˜ผ) **๐˜ผ๐™‹๐™„ ๐™–๐™ฃ๐™™ ๐™Ž๐˜ฟ๐™† ๐˜ฟ๐™š๐™ซ๐™š๐™ก๐™ค๐™ฅ๐™ข๐™š๐™ฃ๐™ฉ** Welcome! I'm Usman Munier, a seasoned ๐™Ž๐™š๐™ฃ๐™ž๐™ค๐™ง ๐™Ž๐™ค๐™›๐™ฉ๐™ฌ๐™–๐™ง๐™š ๐˜ผ๐™„ ๐˜ผ๐™ง๐™˜๐™๐™ž๐™ฉ๐™š๐™˜๐™ฉ with extensive experience software development projects and leading high-performing teams. I have 21+ years of experience working with leading multinational companies like ๐™Š๐™ง๐™–๐™˜๐™ก๐™š, ๐™“๐™–๐™ซ๐™ค๐™ง, ๐™–๐™ฃ๐™™ ๐™ˆ๐™ฎ๐™Ž๐™ฅ๐™–๐™˜๐™š, driving innovation and excellence in software development and architecture. I have a track record of developing talent within engineering teams, encouraging skill growth and collaboration, and achieving great results. My coaching technique enables teams to prosper in software development while also adapting to new technologies. As a facilitator, I assist teams in achieving their objectives and meeting management expectations while also building a happy and productive team atmosphere. Developing software that are fault-tolerant and scalable has always been my passion. My extensive knowledge of ๐˜ฟ๐™š๐™จ๐™ž๐™œ๐™ฃ ๐™‹๐™–๐™ฉ๐™ฉ๐™š๐™ง๐™ฃ๐™จ ๐™–๐™ฃ๐™™ ๐™Ž๐™ค๐™›๐™ฉ๐™ฌ๐™–๐™ง๐™š ๐˜ผ๐™ง๐™˜๐™๐™ž๐™ฉ๐™š๐™˜๐™ฉ๐™ช๐™ง๐™š, combined with a thorough understanding of ๐™Ž๐™š๐™ง๐™ซ๐™ž๐™˜๐™š-๐™Š๐™ง๐™ž๐™š๐™ฃ๐™ฉ๐™š๐™™ ๐˜ผ๐™ง๐™˜๐™๐™ž๐™ฉ๐™š๐™˜๐™ฉ๐™ช๐™ง๐™š (๐™Ž๐™Š๐˜ผ), enables me to create and deploy powerful service frameworks. I've created and implemented frameworks to improve fault observation, system monitoring, and failover techniques. My expertise in ๐˜ผ๐™‹๐™„ ๐™–๐™ฃ๐™™ ๐™Ž๐˜ฟ๐™† ๐˜ฟ๐™š๐™ซ๐™š๐™ก๐™ค๐™ฅ๐™ข๐™š๐™ฃ๐™ฉ ensures that solutions match current and future business requirements while improving functionality and user experience. Technical Skills: I've helped businesses create scalable and fault-tolerant software systems. My expertise in API and SDK development strengthens my capacity to offer high-quality software products. My technical expertise spans a wide range of technologies including React, JAVA, J2EE, C#, Objective-C, Swift, REST, SOAP, VB.Net, VB 6.0, HTML5, JavaScript, jQuery, AngularJS, Node.JS, Express, Oracle Database, MS SQL Server, MongoDB, Sqlite, IIS, Weblogic, OAS, Heroku, Design Patterns, Object-Oriented Programming and Design, Agile Methodologies, Agile with Scrum, Test-Driven Development, Visual Studio, TFS, Git, Clear Case, CVS, and SVN. I am well-equipped to contribute strategically and technically to your project's success. Let's collaborate closely to transform your vision into reality, employing innovative and scalable solutions.
    Featured Skill Spring Boot
    Cloud Architecture
    Software Design Pattern
    Software Architecture
    Innovative Software Solutions Picas
    SaaS Development
    Scrum
    Oracle WebLogic Server
    Heroku
    Oracle SOA Suite
    Oracle Database
    React
    Web Application Development
    Java
    Distributed Computing
  • $33 hourly
    Experienced Full-Stack Software Engineer โ€“ Java Specialist With over 5 years of experience in full-stack development, I offer expertise in creating robust and scalable web applications tailored to your needs. My background spans a variety of technologies and frameworks, ensuring high-quality solutions from the backend to the frontend. **Skills:** โžŠ Backend: Java (8/11/17/21), Spring Framework (Boot, Cloud, Security, IOC, MVC, AOP), JWT, Hibernate (JPA), SQL, JDBC, JUnit5, Mockito, REST & SOAP Web Services, Apache Kafka, Axon Framework (CQRS), Oauth2, Jhipster. โž‹ Cloud Services: AWS (S3, Lambda, API Gateway, SQS, DynamoDB, EC2, ECR, ECS, Kinesis stream, Cloud watch, SNS, Amplify, Cognito, CodeCommit, CodeBuild, CodeDeploy, CloudFormation, Elastic Beanstalk), Azure (Blob Storage, Event Hubs, Application Insights), Google Cloud. โžŒ Frontend: JavaScript, ReactJS (Redux, Redux Toolkit, React Query), Angular (15), TypeScript, HTML, CSS, SASS, Bootstrap, MUI, Ant Design, Leaflet. โž Tools & Platforms: Git, GitLab, Bitbucket, JIRA, Trello, SoapUI, Postman, Maven, NPM, Docker, VSCode, IntelliJ. I am passionate about programming and dedicated to continuous improvement. I aim to deliver exceptional web applications that meet your specific requirements and exceed expectations. Letโ€™s work together to bring your project to life!
    Featured Skill Spring Boot
    API Integration
    Amazon EC2
    MongoDB
    Microservice
    Angular 10
    React
    Spring Framework
    AWS Lambda
    SQL
    JavaScript
    Apache Kafka
    Java
    Axon
    XML
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