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  Senior Java Full Stack Developer with 8+ years of proven experience in designing, developing, and maintaining scalable enterprise applications using Java/J2EE and modern JavaScript frameworks.
  Expertise in Spring Boot, Spring MVC, Hibernate, and RESTful APIs, with strong backend development and architectural skills.
  Proficient in front-end development using Angular, React Js, HTML5, CSS3, JavaScript, TypeScript, Bootstrap, and Material UI.
  Hands-on experience in Microservices architecture, including development, deployment, and orchestration using Docker, Kubernetes, and Spring Cloud.
  Experienced in working with relational databases like MySQL, PostgreSQL, Oracle, and NoSQL databases such as MongoDB, Cassandra.
  Skilled in CI/CD tools including Jenkins, GitLab CI, and Maven/Gradle, with expertise in version control using Git and Bitbucket.
  Proficient in cloud platforms such as AWS (EC2, S3, Lambda, RDS), Azure, and GCP, with exposure to serverless architecture and DevOps practices.
  Familiar with unit testing and automation frameworks like JUnit, Mockito, Selenium, and Cypress.
  Adept at working with tools like JIRA, Confluence, Postman, Swagger, Fiddler, Eclipse, IntelliJ IDEA, and VS Code.
  Strong debugging and performance tuning skills with tools like Log4j, Splunk, New Relic, and AppDynamics.
  Deep understanding of RESTful and SOAP-based web services, including API versioning, security (OAuth2/JWT), and Swagger/OpenAPI documentation.
  Experienced in building responsive, cross-browser-compatible web applications using modern front-end frameworks and adaptive UI design principles.
  Worked on enterprise-grade monolithic and distributed systems, with migration experience to microservices or cloud-native architectures.
  Proficient in using message brokers such as Apache Kafka, RabbitMQ, and ActiveMQ for event-driven architecture.
  Familiar with event sourcing, CQRS patterns, and domain-driven design (DDD) for complex enterprise applications.
  Experienced in writing and optimizing complex SQL queries, stored procedures, and database indexing for high-performance applications.
  Developed and deployed containerized applications using Docker Compose, Helm charts, and managed them on Kubernetes clusters (EKS, AKS, GKE).
  Hands-on with infrastructure-as-code (IaC) using Terraform, CloudFormation, or Ansible for cloud resource automation.
  Experience with logging and monitoring stacks: ELK Stack, Grafana, Prometheus, and AWS CloudWatch for observability and diagnostics.
  Led or participated in code refactoring initiatives, reducing tech debt and aligning with industry best practices and coding standards.
  Conducted performance profiling, load testing using JMeter, Gatling, and implemented caching with Redis, Ehcache, or Hazelcast.
  Involved in security best practices, including input validation, XSS/CSRF prevention, secure authentication, and encryption techniques.
  Experienced in mobile-first web development and basic integration with mobile platforms via REST APIs or GraphQL.
  Delivered proof of concepts (POCs) and technical spikes to evaluate new technologies, tools, or frameworks.
  Proven ability to mentor junior developers, conduct technical interviews, and define coding standards within development teams.
  Successfully collaborated with cross-functional teams including QA, Product, UX, and DevOps, ensuring aligned delivery and continuous improvement.


With a proven track record at Discover Financial Services, I excel in Java, Spring framework, and Agile methodologies, demonstrating strong problem-solving skills and a commitment to excellence. My expertise in developing scalable microservices and leading successful project deployments showcases my technical proficiency and collaborative teamwork abilities.

Experienced Senior Java Full Stack Developer with a strong track record of over 4 years in designing, developing, and deploying scalable, high-performance applications across diverse industries including finance, insurance, and automotive. Skilled in building microservices-based architectures using Java, Spring Boot, Spring Cloud, Hibernate, and RESTful APIs, with hands-on expertise in front-end frameworks such as React, Angular, Vue, and Next.js to deliver responsive and user-friendly interfaces.
Proficient in cloud computing platforms (AWS, Azure, PCF), with practical experience in serverless development using AWS Lambda, containerization with Docker, orchestration with Kubernetes, and CI/CD automation using Jenkins, Maven, and GitHub Actions. Adept at implementing end-to-end solutions that integrate seamlessly with databases like MongoDB, MySQL, PostgreSQL, DynamoDB, and Cassandra, as well as leveraging Kafka, Spark, and Hadoop for data processing pipelines.
Well-versed in DevOps practices, Agile methodologies (Scrum, TDD, BDD), and modern software engineering principles, ensuring delivery of secure, reliable, and maintainable applications. Experienced in authentication and authorization frameworks, including OAuth 2.0 and Azure Active Directory, with a strong background in implementing design patterns and applying object-oriented programming concepts for optimized solutions.
Recognized for problem-solving, adaptability, and initiative, with proven success in modernizing legacy monolithic systems into modular microservices, optimizing system performance, and enhancing application scalability. Passionate about delivering customer-focused, enterprise-grade solutions that balance innovation with business needs.


  Around 8+ years of experience as a Full Stack Java Developer participating in different phases of Software Development Life Cycle (SDLC) including Design, Implementation, and Testing during the development of software, Agile Methodology through Scrum, Test Driven Development, Waterfall, and many other methods.
  Expertise in design and architect full-stack applications, considering scalability, performance, and maintainability.
  Experience in developing robust server-side applications using Java EE/SE, Spring Framework (including Spring Boot) and Hibernate/JPA.
  Experienced in designing and maintaining Kafka clusters, optimizing data streaming pipelines, and ensuring data reliability using Apache Kafka.
  Experienced Technical Writer with a strong background in creating and managing documentation using Atlassian Confluence.
  Experience with Apache Spark and related technologies. Specifically, Spark components, libraries, and tools, such as Spark SQL, PySpark, Spark Streaming, or MLlib.
  Have extreme understanding of Lambda Expressions, Stream API, Functional Interfaces, Method References, Garbage Collector, Collections, Multithreading, Event handling, Exception handling, Java Generics, Externalization, and collections.
  Designed and implemented RESTful APIs for data exchange. Hands on experience in deploying new libraries with Microservice architecture using REST API's and Spring Boot.
  Used Swagger for creating dynamic documentation for RESTful web services.
  Expert in implementing Microservices, Service Oriented Architecture (SOA) with XML based Web services like SOAP/UDDI/WSDL using Top-down Approach and Bottom-up Approach.
  Experience in creating RESTful web services using Jersey, spring frame works and JAX-RS, JAX-RPC and REST Web services client and exposing existing java components as Web services using SOAP, WSDL and UDDI.
  Experienced in working with Spring JDBC Templates, JMS Templates, Spring Rest Templates.
  Extensive programming experience with implementation of Core Java, Servlets, JSP, JDBC, JNDI, Spring Framework, Spring MVC, Spring AOP, Spring Batch, Hibernate ORM, Spring Web Flow, JPA, JSF, JMS, EJB, Bootstrap, Java Mail, Junit.
  Experience with Spring Batch and related technologies, specifically, Spring Batch components, such as jobs, steps, readers, writers, and processors.
  Experience with Docker and related technologies. Specifically, Docker components and tools, such as Docker Compose, Docker Swarm, and Kubernetes.
  Optimizing system performance, reducing database load, or improving response times through Redis caching.
  Implemented a Redis-based caching layer to accelerate database queries or that you configured and maintained Redis clusters for high availability and scalability.
  Experienced Data Engineer with a strong background in designing and implementing real-time data streaming solutions using Apache Kafka.
  Experienced DevOps Engineer with a strong background in configuring, managing, and automating CI/CD pipelines using Atlassian Bamboo.
  Experienced Java Developer with a strong background in designing and implementing batch processing solutions using Spring Batch.
  Technical experience in J2EE design patterns such as Singleton, Factory, Abstract Factory, DAO, MVC, Facade &Business Delegate in the development of enterprise applications.
  Implemented various Java design patterns like MVC, Session Facade, Data Access Object, Factory, Singleton, Data Transfer Object and Front Controller.
  Experienced System Administrator with a strong background in Unix shell scripting for process automation and system management. Seeking opportunities to contribute to efficient system operations.
  Expert in optimization of database queries, design efficient data models, and work with SQL or NoSQL databases.
  Expertise in DB-design, normalization, writing Triggers, Stored Procedures, Functions, Sequences, Cursors, Joins, Index Views, DDL, DML, User defined Data Types to implement business logic and maintain data integrity.
  Expertise in Amazon Kinesis and related technologies like Kinesis services, such as Kinesis Data Streams, Kinesis Data Firehose, Kinesis Data Analytics, and integration with AWS services.
  Proficient in Relational DBMS like Oracle, SQL Server, MySQL, DB2, Toad for performing SQL and PL/SQL programming and NoSQL DB like MongoDB, CouchDB, Cassandra, Dynamo DB and Graph DB. Can also migrate from SQL relational databases to NoSQL databases.
  Good knowledge on implementing ODM framework like Mongoose for mapping MongoDB and interacting with NoSQL databases using Mongoose Connector and Cassandra Node driver.
  Expertise in creating responsive and user-friendly web interfaces using JSP, HTML5, DHTML, CSS3, JavaScript, AJAX and modern front-end frameworks like React, Angular, Node.js.
  Ensured a seamless user experience across different devices and browsers. Integrate third-party services, APIs, and libraries into the application.
  Designed and developed continuous deployment CI/CD pipeline integrating Vagrant, Git, Jenkins, and Chef across hosting zones in AWS and Azure.
  Implemented Microsoft Azure for moving the on-premises data to Azure cloud.
  Hands on experience on Implementing and Architecting Azure Service Offering, such as Azure cloud services, Azure storage, Azure Resource Manager (ARM), Azure Storage, Azure, Blob Storage, Azure VMs, SQL Database, Azure Service Fabric, Azure Monitor, and Azure Service Bus.
  Designing, configuring, and deploying applications utilizing Azure and ARM mainly focusing on auto-scaling, high availability, and fault tolerance.
  Experienced in performing unit testing using JUnit, Karma, Protractor, Test NG, Mockito, integration and deployment of applications using tools such as ANT, Maven, Gradle, Jenkins & debugging through log4j and Splunk.
  Contributed optimizing batch job performance, such as reducing processing times, enhancing throughput, and resource utilization using Spring Batch.
  Expertise in version control tools such as Git, GitHub, CVS, Jenkins and SVN for and maintaining code repositories.
  Conducted code reviews to maintain code quality and adhere to coding standards.
  Created and maintained technical documentation, including architecture diagrams, API documentation, and code comments.
  Generated, reviewed, and maintained documentation, such as compliance reports, impact assessments, and legal agreements, ensuring alignment with regulatory standards.
  Collaborated closely with quality assurance teams to validate software compliance with regulatory specifications, ensuring that project deliverables met legal standards.
  Collaborated with team members to ensure knowledge sharing.
  Ambitious Java Developer versed in following established procedures and working under little or no supervision. Offering technical expertise in programming analysis, application analysis and design. Excellent team player with in-depth knowledge of development tools and languages.


Daeho Son

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Java Full Stack Developer (Backend Focus)

Back End Developer

Full Stack Web Developer

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Java Full Stack Developer (Backend Focus)

Back End Developer

Full Stack Web Developer

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