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Freelance Spring Boot professionals
Check out freelance Spring Boot professionals on Upwork, with the skills you need for your next job.
- $120 hourly
- 5.0/5
- (14 jobs)
๐ 15+ Years Experience | 10x Engineer | Trusted by Fortune 500 Companies | Expert in Microservices & API Integration Projects ๐ 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. ๐ ๏ธ What I Offer ๐ผ Value Delivery - I blend technical expertise with business insights to deliver real value fast. ๐ Spring Boot Microservices - Crafting modular services that scale effortlessly. ๐๏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to 85% improved resource utilization and 60% faster feature time-to-market. ๐ง Enterprise Modernization - Revitalizing outdated systems with cutting-edge technology. ๐ Startup MVP Development - From idea to viable products in fast-paced environments. โก Core Expertise โ 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. ๐ CI/CD Pipelines - Reliable deployments using e.g. Jenkins, GitLab CI and GitHub Actions. ๐ REST API Development & Integration - Building secure, high-performance web services. ๐ Third-Party API Integration - Payment gateways, social media, maps, AI agents and more. ๐ Agile Development - Transparent, adaptive planning and iterative requirement discovery. โ๏ธ Software Automation Solutions - Specialist tools and techniques to streamline the SDLC. ๐ค 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. ๐ 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! ๐Spring Boot
AI ConsultingAutomationMinimum Viable ProductBack-End DevelopmentREST APIAPI FrameworkDomain-Driven DesignClean ArchitectureJavaAPI IntegrationDevOpsKubernetesAPI DevelopmentAgile Software Development - $60 hourly
- 5.0/5
- (7 jobs)
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, BashSpring Boot
CI/CDAmazon Web ServicesSpring MVCJava Persistence APIHibernateAPIRESTful APISQLDockerWeb ApplicationAngularJSJavaMySQLSpring Framework - $45 hourly
- 4.4/5
- (30 jobs)
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, ResaSpring Boot
Spring FrameworkAngularSpring DataDigitalOceanHibernateJHipsterJava Persistence APIAmazon Web ServicesWeb ServiceSQLJavaScriptJava - $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: โค Core Java โค JavaEE โค Alfresco Development (v4.2+) โค Spring MVC, ZK (ZKoss) โค Spring Security โค Spring DATA/JPA/Hibernate โค MySQL (database design and complex query expert) โค JSP/JSTL โค Jasper-Reports/Dynamic Jasper Reports โค Twitter bootstrap โค Lucene/Solr โค Indexing/Searching โค Tomcat/JBOSS โค GIT/SVN/CVS/P4V(Perforce) โค Struts 2.0 โค JIRA/Agile Looking forwardSpring Boot
Amazon Web ServicesDockerJavaScriptReactRESTful APIWeb ServiceMySQL ProgrammingJakarta Server PagesSpring SecurityAWS LambdaAmazon DynamoDBSpring FrameworkJava - $70 hourly
- 5.0/5
- (46 jobs)
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!Spring Boot
Web ServiceJ2EEVue.jsAngularJSHTMLReactLaravelPHPSQLMicroserviceJava Persistence APISpring MVCSpring FrameworkJava - $30 hourly
- 4.7/5
- (11 jobs)
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.Spring Boot
Oracle PLSQLJakarta EEMicroserviceAngularAPIApache MavenContinuous IntegrationGitJenkinsJavaJetBrains IntelliJ IDEADockerLinuxPostgreSQL - $20 hourly
- 5.0/5
- (3 jobs)
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.Spring Boot
NetSuite DevelopmentIntuit QuickBooksSalesforceWebsocketsFirebaseAngular MaterialAWS LambdaAngularJenkinsGoogle Cloud PlatformKubernetes - $35 hourly
- 5.0/5
- (47 jobs)
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.Spring Boot
AmazonAPI DevelopmentApplication Integration SoftwareAutomationJavaAmazon MWSWeb DevelopmentSpring FrameworkDevOpsDashboardAPI IntegrationTechnical SupportAmazon Web Services - $20 hourly
- 5.0/5
- (2 jobs)
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, DecoratorSpring Boot
RESTful APIJ2EEJiraXMLSQLCSSHTMLAngularJavaScriptCore JavaSpring FrameworkHibernateJavaSpring MVC - $40 hourly
- 5.0/5
- (3 jobs)
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.Spring Boot
TerraformMavenlinkLinuxCI/CDHibernateApache CamelDockerJavaJenkinsSpring FrameworkAmazon Web ServicesReactMySQLPostgreSQL - $40 hourly
- 5.0/5
- (15 jobs)
๐๐๐ฅ๐๐จ๐ฆ๐ ๐ญ๐จ ๐๐ฒ ๐๐ซ๐จ๐๐ข๐ฅ๐! ๐๐๐จ๐ฎ๐ญ ๐๐: 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 ๐๐ ๐ฝ๐ฒ๐ฟ๐๐ถ๐๐ฒ: My technical skills spans a wide array of technologies and frameworks: ๐ท Languages: Java, Spring Boot, Node Js, React JS, Angular and Python ๐ท Frameworks: Spring Boot, Nest Js, Express Js, Django ๐ท Clouds : AWS, Azure and GCP. ๐ท Databases: Sql Server, Mysql, MongoDB, Postgres ๐ท 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. ๐ซ ๐ ๐ ๐ง๐ฟ๐ฎ๐ฐ๐ธ ๐ฅ๐ฒ๐ฐ๐ผ๐ฟ๐ฑ: 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. ๐ ๐๐ณ ๐๐ผ๐ ๐ต๐ฎ๐๐ฒ ๐ฎ๐ป๐ ๐พ๐๐ฒ๐๐๐ถ๐ผ๐ป๐, ๐ณ๐ฒ๐ฒ๐น ๐ณ๐ฟ๐ฒ๐ฒ ๐๐ผ ๐ฐ๐ผ๐ป๐๐ฎ๐ฐ๐ ๐บ๐ฒ! ๐๐ฒ๐'๐ ๐ฐ๐ผ๐น๐น๐ฎ๐ฏ๐ผ๐ฟ๐ฎ๐๐ฒ ๐ฎ๐ป๐ฑ ๐ฏ๐ฟ๐ถ๐ป๐ด ๐๐ผ๐๐ฟ ๐ถ๐ฑ๐ฒ๐ฎ๐ ๐๐ผ ๐น๐ถ๐ณ๐ฒ!Spring Boot
Apache KafkaHibernateSpring MVCUnit TestingAutomation FrameworkCypressNodeJS FrameworkSpring BatchMicroservicePostgreSQLMongoDBDockerSpring CloudMySQLJenkinsReactPythonJava - $50 hourly
- 4.9/5
- (45 jobs)
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.Spring Boot
TerraformDockerWeb ServiceHibernateRESTful APIMySQLAPIKubernetesAmazon Web ServicesSpring FrameworkJava - $27 hourly
- 5.0/5
- (9 jobs)
Hey folks๐ 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!Spring Boot
MySQLJakarta Server PagesSpring MVCJDBCHibernateJavaSQL - $35 hourly
- 5.0/5
- (25 jobs)
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/griboziSpring Boot
Apache KafkaRESTful APIOAuthHTMLJUnitApache MavenWordPressCSSCore JavaKubernetesDockerGitJavaPostgreSQL - $75 hourly
- 5.0/5
- (1 job)
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.Spring Boot
Apache KafkaJavaCucumberSelenium WebDriverRESTful APIMicroserviceKubernetesGitReactJenkinsTypeScriptDocker - $18 hourly
- 4.9/5
- (131 jobs)
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:- โ๏ธ Front-end Development JavaScript / React / React-Native / Redux / Angular / Ionic / Vue โ๏ธ Back-end Development Python / Node / Express / Java Spring boot / REST API / Golang / Laravel /Nest.js / Next.js โ๏ธ Databases PostgreSQL / MySQL / MongoDB / DynamoDB โ๏ธ Data Engineering Data Pipelines / ETL / Hive / Spack / Kafka / Drill โ๏ธ AWS Cloud Services Amplify / Lambda / EC2 / CloudFront / EC2 / S3 Bucket / Microservices โ๏ธ Responsibilities and Contribution: โข Involved in various stages of software development life cycle including - development, testing, and implementation. โข Analyzing and validating the functional Requirements. โข Suggesting a better approach and preparing detailed documents and estimating the time required for the delivery system periodically. โข Configuration and Customization of the Application as per the given Business requirement. โข Used the sandbox for testing and migrated the code to the deployment instance thereafter. โข Analysis of requirements Involved in the development of modules. โข 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.Spring Boot
ReactReact NativeApache SparkAngular 10Apache KafkaAWS LambdaGolangApache HiveNodeJS FrameworkVue.jsAmazon EC2PythonJava - $25 hourly
- 4.6/5
- (48 jobs)
A motivated and skilled software developer with more than five years of professional experience. Back-end technologies: - Spring-framework, spring-security - JPA/Hibernate + Spring-Data - REST, GraphQL, and WebServices (Spring-Boot) - Apache Kafka, Camel - SQL, MySQL, PostgreSQL, MariaDB, MongoDB - Maven/Gradle/Ant Front-end technologies: - Spring-MVC, Struts - template engines: Thymeleaf, JSP/JSTL, GSP, Freemarker, Jtwig, Velocity - JQuery and Bootstrap - HTML5, CSS3, JavaScript - Angular, React SDLC - Agile and Scrum programming methodology - TDD using JUnit, Mockito, Karma (for UI) - Eclipse, STS and Intellij IDEA - Git, SVN, and CVS code repositories - Maven, Ant, and Gradle build tools - Jenkins and Bamboo CI servers - Docker, Kubernetes - Bash scripting, Server Administration Cloud - Amazon cloud deployment using EC2 - Amazon file sharing S3 - Amazon cloud database using RDS - Amazon based messaging (SNS and SQS) - Google cloud platform - Heroku based could deployment - VPS setup and administrationSpring Boot
Agile Project ManagementCode ReviewJiraBash ProgrammingHibernateJUnitSpring MVCMicroserviceJava Persistence APIMongoDBThymeleafJavaMySQL - $30 hourly
- 5.0/5
- (2 jobs)
I'm an Experience ๐๐๐๐ค-๐๐ง๐ ๐๐๐ฏ๐ Developer with 8+ ๐ฒ๐๐๐ซ๐ฌ of experience(Mostly in Fintech domain). Please have a look at my ๐ญ๐๐๐ก-๐ฌ๐ญ๐๐๐ค and ๐ฉ๐ซ๐ข๐ฆ๐๐ฅ ๐๐ฑ๐ฉ๐๐ซ๐ญ๐ข๐ฌ๐: ๐๐ซ๐จ๐ ๐ซ๐๐ฆ๐ฆ๐ข๐ง๐ ๐ฅ๐๐ง๐ ๐ฎ๐๐ ๐๐ฌ: Java ๐ ๐ซ๐๐ฆ๐๐ฐ๐จ๐ซ๐ค๐ฌ:, Spring Boot, Spring Core, Spring Web Services, Hibernate, Apache Wicket. ๐๐๐ญ๐๐๐๐ฌ๐๐ฌ: MySQL, Oracle. ๐๐ฎ๐ข๐ฅ๐/๐๐๐ฉ๐ฅ๐จ๐ฒ: Maven. Here you can review ๐ฆ๐ฒ ๐๐๐๐ค๐ ๐ซ๐จ๐ฎ๐ง๐: โข Experience in the development of Web Services based on ๐๐๐๐ and Soap โข Experience in SOA Architecture and excited to work on Micro services architecture. โข Experience in working with ๐๐๐ฏ๐ ๐๐ซ๐๐ฆ๐๐ฐ๐จ๐ซ๐ค๐ฌ such as ๐๐ฉ๐ซ๐ข๐ง๐ , ๐๐ข๐๐๐ซ๐ง๐๐ญ๐; โข Experience in working with Core JavaScript; โข ๐๐ฉ๐ซ๐ข๐ง๐ ๐ซ๐๐ฅ๐๐ญ๐๐ experience, including ๐๐จ๐ซ๐, ๐๐จ๐จ๐ญ, ๐๐๐ญ๐, ๐๐๐, ๐๐๐๐ฎ๐ซ๐ข๐ญ๐ฒ; โข Experience in working with ๐๐๐๐๐, mostly ๐๐ฒ๐๐๐, Oracle; โข Familiar with project development end-to-end phases such as ๐๐ง๐๐ฅ๐ฒ๐ฌ๐ข๐ฌ, ๐๐๐ฌ๐ข๐ ๐ง, ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ, ๐ญ๐๐ฌ๐ญ๐ข๐ง๐ , and Deployment; โข Willingness to analyze various problems; โข Able to ๐๐จ๐ฆ๐ฆ๐ฎ๐ง๐ข๐๐๐ญ๐ with different types of people; โข Experience in working in remote and in-house teams using ๐๐๐๐๐ ๐ฆ๐๐ญ๐ก๐จ๐๐จ๐ฅ๐จ๐ ๐ฒ; โข Upper-intermediate level of ๐๐ง๐ ๐ฅ๐ข๐ฌ๐ก, great speaking and writing skills. I always dig into the project, try to understand it ๐๐ฌ ๐๐๐๐ฉ ๐๐ฌ ๐ฉ๐จ๐ฌ๐ฌ๐ข๐๐ฅ๐. I'm ๐ก๐๐ซ๐-๐ฐ๐จ๐ซ๐ค๐ข๐ง๐ , always interested in the ๐ฉ๐ซ๐จ๐ฃ๐๐๐ญ ๐ฌ๐ฎ๐๐๐๐ฌ๐ฌ, 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!Spring Boot
Core JavaAndroid App DevelopmentSpring FrameworkJakarta Server FacesJavaScriptApache WicketHibernate - $25 hourly
- 5.0/5
- (49 jobs)
A top-rated expert in crafting end-to-end solutionsโfrom UI design to DevOpsโthat are beautiful, robust, scalable, and cost-effective. I work at the intersection of AI Agents and Automation, App Development, Product Design, and Cloud Infrastructureโhelping startups launch fast and established teams streamline and scale. ๐ What I'm Best At: ๐น Web App Development: ๐ง UI/UX Design: Figma, Prototyping, Web Accessibility ๐ฅ๏ธ Frontend Development: Next.js, Angular, React, Vue, Vaadin ๐ป Backend Development: Java (8โ20+), Kotlin, Python, Node.js, NestJS โ๏ธ Java Ecosystem: Spring Boot, Spring MVC, Spring Security, Spring Data JPA, Spring Cloud, Spring AI, Micronaut, Hibernate, Apache Camel, Apache Kafka, Keycloak ๐ Python Frameworks: Flask, FastAPI ๐ฆ Other: Ktor, JavaFX ๐พ Databases: MySQL, PostgreSQL, MongoDB, IBM DB2, Oracle, MariaDB ๐ง Tools: JDBC, Maven, Gradle, XSL, JSTL, JSP ๐ Observability: Elastic Stack โ 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) ๐น Mobile App Development: ๐ฑ Frameworks: Flutter/FlutterFlow/Dart, React Native, Expo, Android and iOS native bridging ๐ Authentication & Notifications: Firebase Auth, Push Notifications, FCM, ๐พ Offline & Real-Time: Offline Support, Real-time Sync, Secure Storage ๐น AI Chatbot Development & Generative AI Integration: ๐ค Voice Bots: Twillio, ElevenLabs and more ๐ฃ๏ธ Chatbots: Rasa, ChatterBot, Amazon Lex and more ๐ง Automation & Integration: n8n, Zapier, Make ๐ Vector Databases for RAG: Chroma, Pinecone, Qdrant, pgVector ๐ฆ Other: Document conversion to Audiobook, Offline form docs to Live Surveys, Creating Social Media Posts from Documents ๐น E-commerce / Shopify Development: ๐ง Shopify Liquid: Theme customization ๐ Shopify APIs: Storefront API, Admin API integrations ๐ Headless Shopify: Hydrogen, Next.js, or custom React frontend ๐ณ Payment Integration: Payment gateway and custom checkout flows โก Performance Optimization: Conversion rate optimization (CRO) ๐น Why Choose Me: โบ I treat client success as my own, caring for their project like it's my own โบ Excellent and Bilingual English communication: I make sure to keep you updated โบ Dedicated to clean, beautiful work: Well-documented work that any new dev can jump on, and has a low maintenance cost. โบ AI-embedded workflow: Reduces cost and time to ship, giving me the edge over traditional dev shops ๐น Letโs 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? Letโs discuss how I can help.Spring Boot
FigmaKubernetesMobile App DevelopmentFlutterReact Nativen8nChatbot DevelopmentArtificial IntelligenceAI DevelopmentAWS ApplicationReactJavaScriptPythonJava - $24 hourly
- 4.8/5
- (23 jobs)
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.Spring Boot
CI/CDAngularMVC FrameworkApache KafkaSpring FrameworkJavaRESTful APIMicroserviceSQLPostgreSQLRedisHibernate - $25 hourly
- 4.4/5
- (35 jobs)
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 OpportunitiesSpring Boot
GraphQLAngularReactRESTful APISpring FrameworkCI/CDMicroserviceHibernateJava - $50 hourly
- 5.0/5
- (13 jobs)
-------------------------------------------------------------------------------------------------------------- I have 8+ years of experience with web development My main skills: โ Java, Spring Boot, Kotlin, Spring MVC, Spring Security, Hibernate โ K8s, Docker,AWS, GCP โ MySql,PostgreSQL,DB2, SQL Server โ MongoDB โ Html, CSS, JavaScript, JQuery, Ajax, Sass, Json, Angularjs, Angular2, Rest API โ API Integration, API Development, API Documentation โ Git, Bitbucket, SVN โ Maven, Gradle โ 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.Spring Boot
PostgreSQL ProgrammingMySQL ProgrammingMySQLHibernateLaraveljQueryJavaPHPKotlin - $20 hourly
- 4.8/5
- (12 jobs)
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..Spring Boot
MicroserviceAPIjQueryHTMLWordPressShopifyPayment Gateway IntegrationJavaJavaScriptPHPHTML5Spring FrameworkMySQLCSS 3 - $40 hourly
- 4.9/5
- (48 jobs)
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 ๐ - Java - JavaFX - Kotlin - Spring Boot - REST / SOAP - Hibernate - SQL - HTML + CSS + Bootstrap Databases ๐ - MySQL - SQLite - Oracle - Firebase - PostgreSQL Tools ๐ - 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.Spring Boot
SOAPKotlinRESTful APIStandalone ApplicationHTML5Microsoft SQL Server ProgrammingApache TomcatEnglishJDBCJavaFXSQLJavaMySQL - $40 hourly
- 5.0/5
- (15 jobs)
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 *********************************** โ Give utmost importance to the respect of deadlines. โ Collaborative with excellent communication skills. โ Strong Test Driven Development Advocate. โ 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. โ 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. โ Intellectually honest. I will not accept a task I know I am unable to do. **************************** THINGS I CAN HELP YOU WITH ******************************** โ Rest APIs โ GraphQL APIs โ Microservices Architecture Designs โ Unit and Integration tests โ Desktop applications โ Bugs Resolution โ System Reviews *************************** SOME TECHNOLOGIES I MASTER ******************************* โ Java 8-21 โ Spring MVC โ Ktor โ Spring Webflux โ Spring Cloud โ Spring Security โ GraphQL โ TeamCity โ Docker โ AWS โ RabbitMQ โ Kafka โ Jenkins โ Maven โ 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.Spring Boot
Website MaintenanceWebsite AuditWebsite CopywritingWordPress WebsiteFigmaWebflowWebsite SecurityWebsiteWordPressWeb DevelopmentSQLDockerKotlinWeb Application - $80 hourly
- 5.0/5
- (1 job)
**๐๐๐๐ ๐๐ช๐ก๐ก ๐๐ฉ๐๐๐ ๐ฟ๐๐ซ๐๐ก๐ค๐ฅ๐๐ง**๐๐๐ฃ๐๐ค๐ง ๐๐ค๐๐ฉ๐ฌ๐๐ง๐ ๐ผ๐ ๐ผ๐ง๐๐๐๐ฉ๐๐๐ฉ **๐๐๐ง๐ซ๐๐๐-๐๐ง๐๐๐ฃ๐ฉ๐๐ ๐ผ๐ง๐๐๐๐ฉ๐๐๐ฉ๐ช๐ง๐ (๐๐๐ผ) **๐ผ๐๐ ๐๐ฃ๐ ๐๐ฟ๐ ๐ฟ๐๐ซ๐๐ก๐ค๐ฅ๐ข๐๐ฃ๐ฉ** Welcome! I'm Usman Munier, a seasoned ๐๐๐ฃ๐๐ค๐ง ๐๐ค๐๐ฉ๐ฌ๐๐ง๐ ๐ผ๐ ๐ผ๐ง๐๐๐๐ฉ๐๐๐ฉ with extensive experience software development projects and leading high-performing teams. I have 21+ years of experience working with leading multinational companies like ๐๐ง๐๐๐ก๐, ๐๐๐ซ๐ค๐ง, ๐๐ฃ๐ ๐๐ฎ๐๐ฅ๐๐๐, 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 ๐ฟ๐๐จ๐๐๐ฃ ๐๐๐ฉ๐ฉ๐๐ง๐ฃ๐จ ๐๐ฃ๐ ๐๐ค๐๐ฉ๐ฌ๐๐ง๐ ๐ผ๐ง๐๐๐๐ฉ๐๐๐ฉ๐ช๐ง๐, combined with a thorough understanding of ๐๐๐ง๐ซ๐๐๐-๐๐ง๐๐๐ฃ๐ฉ๐๐ ๐ผ๐ง๐๐๐๐ฉ๐๐๐ฉ๐ช๐ง๐ (๐๐๐ผ), 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 ๐ผ๐๐ ๐๐ฃ๐ ๐๐ฟ๐ ๐ฟ๐๐ซ๐๐ก๐ค๐ฅ๐ข๐๐ฃ๐ฉ 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.Spring Boot
Cloud ArchitectureSoftware Design PatternSoftware ArchitectureInnovative Software Solutions PicasSaaS DevelopmentScrumOracle WebLogic ServerHerokuOracle SOA SuiteOracle DatabaseReactWeb Application DevelopmentJavaDistributed Computing - $33 hourly
- 5.0/5
- (4 jobs)
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:** โ 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. โ 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. โ Frontend: JavaScript, ReactJS (Redux, Redux Toolkit, React Query), Angular (15), TypeScript, HTML, CSS, SASS, Bootstrap, MUI, Ant Design, Leaflet. โ 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. Letโs work together to bring your project to life!Spring Boot
API IntegrationAmazon EC2MongoDBMicroserviceAngular 10ReactSpring FrameworkAWS LambdaSQLJavaScriptApache KafkaJavaAxonXML Want to browse more freelancers?
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