Dylan Kessler

Java Software Developer

Backend DeveloperIT

SUMMARY • 12+ years of experience in full-stack development, specializing in Java, Spring Boot, Angular, and REST APIs. • Strong expertise in building scalable microservices, front-end interfaces, and database-driven applications. • Hands-on experience with Angular CLI 14 and 19, ReactJS, TypeScript, HTML5, CSS3, and API integration. • Backend expertise in Java, Spring Boot, SQL (Oracle & MySQL), MongoDB, and API development. • Cloud experience with AWS (Lambda, S3, EC2, Redis), Docker, Kubernetes, and CI/CD automation. • Excellent problem-solving and communication skills, with Agile and TDD experience. ________________________________________ TECHNICAL SKILLS • Backend Technologies: Java 17+ Spring Boot, Spring Framework (Core, Integration, Batch, JPA/Hibernate, JDBC, Security) • Frontend Technologies: Angular CLI 14 and 19, ReactJS , TypeScript, JavaScript, HTML5, CSS3, Bootstrap • API & Microservices: REST APIs, JWT, API Gateway • Database: Oracle, MySQL, SQL, MongoDB, DynamoDB, Hive • Cloud & DevOps: AWS (Lambda, S3, EC2, Redis, EKS), Docker, Kubernetes, CI/CD (Jenkins, SonarQube), Git • Software Development Practices: Agile (Scrum), Test-Driven Development (TDD), Secure Coding • Messaging & Streaming: Kafka (familiarity) • Operating Systems: Linux (Bash scripting, automation) ________________________________________ PROFESSIONAL EXPERIENCE Freelance Full-Stack Developer Self-Employed — April 2024 – Present • Built RESTful services in Java Spring Boot, integrated with UI prototypes using React.js and Angular CLI 19. • Deployed containerized services using Docker, with CI/CD pipelines managed in GitHub. • Developed reusable UI components and explored state management solutions in React to match Angular features. Senior Full-Stack Engineer JP Morgan Chase – Jersey City, NJ (09/2023 – 04/2024) Technologies: Java 17, Spring Boot, Angular CLI 14, Kubernetes, REST APIs, Oracle, Redis • Developed full-stack features using Spring Boot for enterprise applications. • Built and optimized scalable backend microservices

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Work Background

Freelance Java Developer / Software Consultant

myselfFreelance Java Developer / Software Consultant

Apr. 2024Brooklyn, NY• Built and maintained backend systems for using Java 17, Spring Boot, REST APIs, using SQL, Redis, and NoSQL databases. • Built Front-end systems using Angular CLI and ReactJS. • Designed and deployed containerized services onto AWS using Docker and Kubernetes, including AWS EKS environments. • Conducted API integration and validation using Postman to ensure seamless communication between systems. • Contributed to personal GitHub projects involving REST API prototyping and CI/CD workflows, showcasing a dedication to continuous professional development. • Focused on continuous professional development in cloud computing, container orchestration, and application security.

Senior Full-stack Engineer III

JPMorganChaseSenior Full-stack Engineer III

Sep. 2023 - Apr. 2024Jersey City, New Jersey, United StatesTechnologies: Java 17, Spring Boot, Microservices, Kubernetes, REST APIs, Oracle, Spark, Junit/Mockito • Developed and optimized scalable microservices for financial applications. • Built and maintained high-performance REST APIs, ensuring security and reliability. • Led containerized deployments using Kubernetes and Docker, improving system availability. • Strengthened CI/CD pipelines (Jenkins, SonarQube, Git), enforcing automated testing.

Senior Full Stack Engineer

OptumSenior Full Stack Engineer

Aug. 2022 - Jul. 2023Raleigh-Durham-Chapel Hill AreaRelevant Technologies: Java SDK, Groovy, REST, SQL, JDBC, JPA/Hibernate, Spring Boot & Spring Framework, MySQL, Maven, AngularJS & Angular CLI, JSP, HTML, GIT, Jenkins with SonarQube and Jacoco • Collaborated in an Agile Scrum team, spearheading the development of key product features. • Influenced design choices through active participation in design sessions. • Streamlined the development and deployment of Spring Boot, Spring REST, and AngularCLI solutions, ensuring code quality with Maven, Junit/Mockito, SonarQube, and JaCoco integrations. • Upheld coding standards by conducting rigorous code reviews and mentoring team members.

Senior Full Stack Engineer

Blue Cross Blue Shield of North CarolinaSenior Full Stack Engineer

Nov. 2013 - Aug. 2022Raleigh-Durham, North Carolina AreaRelevant Technologies: Core - Java 8 and 11, Python, Linux Web - J2EE, SOAP/REST, Spring Framework, Spring Boot, Spring JDBC and JPA, JPA/Hibernate Database - Oracle, IBM DB2 Front End - AngularJS & Angular CLI, Typescript, Javascript, JSP, HTML, CSS Testing - JUnit and Mockito build/Deploy - Maven, GIT, RTC, Jenkins with SonarQube & Jacoco, Openshift on AWS Big Data - Hadoop, HDFS, Python, Hive, PySpark, Sqoop - Managed diverse payment systems for shoppers, members, and agents. - Fostered partnerships across departments and with external vendors for seamless integrations. - Mentored teams on payment application best practices. - Led the design of a new payment system with vendor backends as the primary middleware expert. - Developed a voice-activated payment system for Medicare members using Spring Framework. - Redesigned member payment systems and introduced agent-centric features. - Achieved 50% savings per transaction by transitioning to efficient payment validation tech. - Resolved critical payment issues and automated daily finance reporting. - Implemented monitoring for shopper purchases to preempt payment issues. - Contributed to diverse team-owned apps and led Hadoop data ingestion innovations. - Streamlined Hadoop processes, reducing development/testing durations. - Implemented multiple Ratings microservices using Spring Boot. - Created a configurable PySpark template for Hadoop data transformations. - Assisted in recruiting efforts, ensuring team growth with qualified talent. - Championed code quality and unit testing for enhanced application integrity.

Web Developer

MicroPact (formerly Iron Data Solutions, Inc.)Web Developer

Jul. 2011 - Nov. 2013Raleigh-Durham, North Carolina AreaMicropact( formerly Iron Data Solutions ) – Raleigh, NC • Adapted applications in response to evolving market trends and customer needs. • Oversaw end-to-end application design and development, ensuring alignment with client requirements.

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