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Nnamdi Nwaokorie

@nnamdinwaokorie

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Full Stack Software Developer building scalable cloud-native web apps and secure APIs with Java, React, and AWS.

United States

Message

What I'm looking for

I’m looking to build end-to-end full stack, cloud-native systems—owning secure backend APIs, responsive UIs, and CI/CD/automation—within Agile teams focused on reliability, security, and measurable performance improvements.

I’m a Full Stack Software Developer with 3.5+ years of experience building scalable web applications, backend systems, cloud-native solutions, and enterprise software. I enjoy turning complex requirements into reliable software across the full lifecycle—design, implementation, testing, deployment, and production support.

At Amazon Web Services, I worked as a Mainframe Software Engineer supporting AWS mainframe modernization. I built asynchronous Python automation utilities (AsyncIO) to process high-volume JCL jobs, created secure automation for file transfers between AWS S3 and mainframe environments, and delivered improvements that reduced internal dataset parsing time by 90%.

Previously at Cognizant, I developed full stack enterprise applications using Java Spring Boot and Angular, integrating secure authentication/authorization with JWT and Spring Security. I also implemented CI/CD workflows, containerization with Docker, and automated testing/quality tooling (JUnit, Mockito, Log4J, SonarQube) to strengthen reliability and accelerate releases in Agile Scrum teams.

Experience

Work history, roles, and key accomplishments

Current

Mainframe Software Engineer

Current

Amazon Web Services

Dec 2023 - Present (2 years 6 months)

Developed asynchronous Python automation utilities using AsyncIO to process and submit high-volume JCL jobs for AWS mainframe modernization. Reduced internal dataset parsing time by 90% and built secure automation for SFTP-based transfers between AWS S3 and mainframe servers, with CI/CD pipeline workflows to improve deployment consistency.

Python AsyncIO COBOL AWS S3 AWS CodePipeline Jenkins CI CD JCL

Full Stack Angular Java Developer

Cognizant

Jul 2022 - Apr 2023 (9 months)

Built full-stack enterprise applications using Java Spring Boot, Angular, PostgreSQL, and AWS to support scalable business operations. Implemented backend APIs and microservices with Spring Boot, secured endpoints with JWT and Spring Security, and improved deployment automation using Docker, Jenkins, GitHub, and AWS CodePipeline.