Spring Boot Java Full-Stack Developer

Nikhil R

Austin, TX +1-925-***-**** ********.**@*****.*** https://www.linkedin.com/in/nikhil-r-dev/ PROFESSIONAL SUMMARY

Full-Stack Developer with 5+ years of experience designing and deploying scalable, cloud-native AI applications across fintech, healthcare, and retail. Delivered 30+ Spring Boot microservices and automated CI/CD pipelines on AWS and Kubernetes. Expert in React.js, Angular, and Java microservice architecture, skilled in API design, performance optimization, and system integration. Committed to building secure, high-performance applications that deliver real business value. TECHNICAL SKILLS

• Languages: Java 8/11, JavaScript, TypeScript, SQL, HTML5, CSS3, Shell Scripting, XML, JSON

• Backend: Spring Boot, Spring MVC, Spring Security, Hibernate, JPA, Node.js, RESTful APIs, Microservices

• Frontend: React.js, Angular (8–19), JavaScript,Next.js, Redux, RxJS, Material UI, Bootstrap, SCSS, Thymeleaf

• Web & API: REST, Swagger/OpenAPI, JWT, OAuth2, Postman, SOAP (Basic)

• Databases: MySQL, PostgreSQL, MongoDB, Redis, Oracle (Basic)

• Cloud & DevOps: AWS (EC2, S3, RDS, Lambda, CloudWatch, SNS), Azure (Basic), Docker, Kubernetes, Helm, Jenkins, GitHub Actions, Git, Bitbucket, GitLab, Maven

• Caching & Messaging: Apache Kafka, Redis, EhCache, RabbitMQ (Basic)

• Testing & Quality: JUnit 5, Mockito, Cucumber, Jasmine, Karma, SonarQube, Selenium (Basic), BDD, Automated Testing

• Monitoring & Logging: ELK Stack, Log4j2, Prometheus, Spring Boot Actuator

• Tools & IDEs: IntelliJ IDEA, Eclipse, Visual Studio Code, Chrome DevTools, Fiddler

• Practices & Methodologies: Agile (Scrum), CI/CD, TDD, Pair Programming, Code Reviews, SDLC Documentation PROFESSIONAL EXPERIENCE

Capital One Jul 2024 – Present

Full Stack Java Developer

Tech Stack: Java Spring Boot React Kafka AWS (EC2, Lambda, RDS, S3) PostgreSQL Docker Kubernetes Redis

• Designed and architected 12+ Spring Boot microservices supporting authentication, loan origination, and account services, ens uring 99.9% uptime and secure RESTful communication across enterprise systems.

• Built accessible React.js interfaces with Formik and Material UI, improving user experience by driving a 28% increase in task c ompletion and reducing front-end defects by 35%; collaborated on HTML5, CSS3, and JavaScript enhancements.

• Tuned transaction processing by integrating Kafka pipelines for real-time credit card event handling, reducing system lag by 45

% and improving API response performance for business-critical workflows.

• Deployed applications to AWS (EC2, Lambda, RDS, S3) and Azure with Docker, Kubernetes, and Helm, streamlining deplo yment throughput and maintaining high system reliability under peak load conditions.

• Implemented CI/CD workflows using GitHub Actions, Jenkins, and Maven/Gradle, automating build and deployment pipeli nes, cutting release cycles by 40%, and ensuring consistent code quality.

• Enhanced database operations and SQL query performance in PostgreSQL through indexing and schema tuning, accelerating data retrieval and reducing latency by 65%.

• Created standardized API contracts using Swagger/OpenAPI, reducing integration time per engineer by 6 hours and improving SDK generation efficiency.

• Strengthened monitoring and production reliability using ELK Stack, Log4j2, and Spring Boot Actuator, lowering mean time to resolution (MTTR) by 30%.

• Secured microservices through Spring Security, OAuth2, and CSRF protection, achieving compliance with corporate securit y and audit policies.

• Mentored 5 junior engineers on Spring Boot, REST APIs, SQL optimization, Git workflows, and front-end best practices ( React, Angular) to improve development consistency and team productivity.

• Collaborated with QA and Product teams to integrate Cucumber-based BDD testing, reaching 95% unit test coverage across k ey modules and improving defect detection speed.

•Researched and implemented modern frameworks such as Kafka Streams, Azure Data Factory, and Snowflake integrations, enabling new enterprise data capabilities and driving measurable business Epic Systems May 2021 – Jul 2023

Full Stack Developer

Tech Stack: Spring MVC Hibernate MySQL Angular 15 RxJS Spring Security JSP Postman 2025

• Engineered backend billing modules using Java REST APIs, MVC, Hibernate, and MySQL to support 50K+ daily users, drivi ng a 40% increase in claims throughput across EHR workflows.

• Enhanced patient portal engagement by 22% by developing appointment booking and lab delivery flows using Angular 17, T ypeScript, and RxJS for improved accessibility and responsiveness.

• Instituted secure access controls with Spring Security, enabling enterprise SSO and RBAC to safeguard 100K+ patient record s and maintain HIPAA compliance.

• Integrated Salesforce APIs with backend microservices to automate marketing and synchronization, while extending Jenkins pi pelines for metadata validation—reducing release errors by 25%.

• Automated billing and archival flows with MySQL triggers and stored procedures, improving batch performance by 40% du ring peak hours.

• Expanded Postman test suites and BDD validations, achieving 35% higher coverage across patient enrollment, appointments, and billing modules.

• Executed legacy data migrations with transformation scripts preserving referential integrity, ensuring a flawless system rollou t across production environments.

• Accelerated frontend rendering by 35% through Angular lazy loading, efficient pagination, and backend indexing, yielding fa ster performance under high-volume use.

• Refined MyChart mobile integration with optimized Angular components, driving a 25% increase in mobile engagement an d smoother WebView experiences.

• Documented technical specifications, deployment pipelines, and architecture workflows in Confluence, expediting onboarding and ensuring seamless team collaboration.

Target Jun 2019 – May 2021

Software Engineer

Tech Stack: Java Spring Boot Angular 9 Thymeleaf MySQL Jenkins Tomcat JIRA

• Delivered real-time synchronization of 10K+ SKUs, as measured by consistent vendor-side accuracy, by designing and scaling microservices in Java 8 and Spring Boot.

• Shortened manual data entry cycles by 30%, as measured by faster inventory updates and reduced operational errors, by building modular Angular UIs with reusable components and reactive forms.

• Boosted internal tool utilization by 40%, as indicated by engagement tracking, by streamlining backend workflows through Thymeleaf-based admin modules in Spring Boot.

• Fortified retail admin workflows, as validated by positive compliance results, by implementing Spring Security with JWT and Angular route guards.

• Maintained uninterrupted deployments during architectural transition, as demonstrated by zero rollbacks, by facilitating a monolith-to-microservices migration using JSP/Servlet bridges.

• Compressed frontend load times by 35%, as benchmarked by improved Lighthouse performance scores, by implementing Angular lazy loading and AOT compilation.

• Stabilized WAR deployments to on-premise Tomcat, as measured by a 60% reduction in UAT failures and 20+ hours saved per cycle, by configuring Jenkins pipelines and deployment profiles.

• Expedited dashboard performance by 40%, as tracked by faster analytics load times, by optimizing deeply nested SQL joins and subqueries.

• Unified engineering collaboration, as seen in smoother onboarding sessions, by formalizing data models, API contracts, and workflows in Confluence.

• Streamlined sprint execution, as reflected by a 20% decrease in story rollover, by partnering with QA and product teams in JIRA to improve user story quality.Streamlined sprint execution and cut story rollover by 20%, by partnering with QA and product teams in JIRA to write more testable and complete user stories. CERTIFICATIONS

• Oracle Cloud Infrastructure 2025 Certified Developer Professional

• Oracle Cloud Infrastructure 2025 Generative AI Professional

• Oracle Certified Associate (OCA) - Java SE Programmer. EDUCATION

Texas Tech University, Lubbock, TX May

Master of Science (M.S), Computer Science

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