Ryan Robison

Senior Full Stack Engineer with 9+ years of experience designing, developing, and operating secure, scalable enterprise applications across backend, frontend, and cloud environments. Strong expertise in Java, Spring Boot, React, TypeScript, REST APIs, microservices, Kafka, AWS, SQL/NoSQL databases, Docker, Kubernetes, and CI/CD. Experienced in distributed systems, event-driven architecture, API integrations, production troubleshooting, automated testing, and enterprise system modernization.

Lead Software Engineer at Walmart (2024-07 – Present)

• Architected scalable, secure microservices using Java 17, Spring Boot, REST APIs, and AWS, applying distributed-system and cloud-native patterns for resilient enterprise workloads.
• Engineered backend services using Spring Boot, JPA/Hibernate, SQL/NoSQL databases, and reusable service components while enforcing enterprise coding, security, and architecture standards.
• Designed event-driven integrations using Kafka and asynchronous messaging patterns to enable reliable data flow and decoupled communication across enterprise services.
• Implemented React and TypeScript applications with reusable components, REST API integration, and responsive interfaces, delivering cohesive end-to-end functionality.
• Optimized API gateways, caching, database access, asynchronous processing, and service communication to improve application performance and reduce critical response times by approximately 30%.
• Integrated AWS services, Docker, Kubernetes, and CI/CD automation to support repeatable deployments and highly available production environments.
• Established comprehensive JUnit, Mockito, integration, contract, and end-to-end testing practices, improving release confidence and reducing production regressions.
• Diagnosed complex distributed production issues through logging, monitoring, tracing, and performance profiling, reducing critical incident resolution time by approximately 30%.

Full Stack Engineer at eBay (2022-03 – 2024-07)

• Led development of high-volume enterprise applications using Java, Spring Boot, React, TypeScript, REST APIs, and microservices architecture.
• Developed reusable Spring Boot services with JPA/Hibernate and SQL/NoSQL persistence, establishing maintainable service boundaries and consistent API contracts.
• Modernized legacy application components into independently deployable microservices using event-driven patterns, asynchronous messaging, and resilient distributed-system practices.
• Enhanced system throughput through query optimization, caching, load balancing, asynchronous processing, and targeted performance profiling, improving critical workloads by approximately 25%.
• Migrated workloads toward AWS, Docker, and Kubernetes-based deployment architectures while strengthening CI/CD automation and operational consistency.
• Streamlined software quality through JUnit, Mockito, integration testing, code reviews, Swagger/OpenAPI documentation, and continuous delivery practices.

Full Stack Engineer at Cognizant (2018-02 – 2022-03)

• Implemented Java, Spring Boot, React, TypeScript, and REST APIs for enterprise messaging and streaming platforms supporting distributed telecommunications workflows. (Client: Verizon)
• Built Kafka-driven microservices and event-driven integrations that enabled asynchronous processing, reliable messaging, and scalable service-to-service communication.
• Integrated enterprise APIs and third-party platforms through reusable backend services, API contracts, and resilient integration patterns.
• Tuned distributed applications through caching, API optimization, asynchronous execution, and production troubleshooting, supporting approximately 2× higher peak workload capacity.
• Transformed healthcare application capabilities through Java/Spring Boot services, REST APIs, database integration, and enterprise application modernization. (Client: Epic Systems)
• Developed secure backend integrations using Java, Spring Boot, SQL, and reusable APIs to connect healthcare workflows with enterprise systems.
• Optimized SQL queries, indexes, JPA/Hibernate data access, and data models to improve application performance and efficient retrieval of healthcare information.
• Modernized legacy components into service-oriented architectures using API-driven integrations and cloud-ready engineering practices while preserving critical healthcare workflows.

Software Engineer at Chewy (2016-08 – 2018-02)

• Delivered React and JavaScript web applications with reusable components, responsive interfaces, and REST API integrations supporting e-commerce workflows.
• Created Java and Node.js backend services and REST APIs supporting customer-facing applications and transactional business capabilities.
• Integrated frontend applications with backend microservices and third-party APIs, enabling rapid delivery of cohesive end-to-end features.
• Accelerated engineering delivery through automated testing, Git-based development, CI/CD, Agile practices, and iterative production releases.

Bachelor's Degree in Computer Science – National University of Singapore (2016-08)