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Mark Demus

@markdemus

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Backend Java engineer specializing in AWS cloud migrations, Kubernetes orchestration, and scalable systems.

United States

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What I'm looking for

I seek a role focused on backend/cloud engineering with strong DevOps collaboration, opportunities to lead migrations and improve scalability, and a culture valuing security, automation, and cross‑functional teamwork.

I am a backend Java engineer with over five years of experience delivering secure, scalable systems in financial and corporate environments. I specialize in AWS cloud migrations, Kubernetes orchestration, database management (Oracle/MySQL), and CI/CD pipelines, with a track record of shipping production features, migrating legacy systems, and improving operational observability.

I'm practiced in Agile/TDD workflows and cross‑geographic collaboration, having contributed to SWIFT/non‑SWIFT messaging products, serverless upgrades, and Redshift migrations. I prioritize least‑privilege security, maintainable code (Spring Boot, microservices), and reliable deployment automation to reduce costs and increase scalability.

Experience

Work history, roles, and key accomplishments

Software Engineer

Southwest Airlines

Feb 2025 - Sep 2025 (7 months)

Upgraded Serverless Framework and refactored deployment configs, supported a Redshift migration, and standardized GitLab CI pipelines to improve deployment reliability across dev/test/prod environments.

Java Serverless Gitlab CI AWS RedShift Cloudwatch Angular CI CD IAM Systemd

Software Engineer

J.P. Morgan Chase

Jan 2021 - Nov 2024 (3 years 10 months)

Developed SWIFT and non‑SWIFT outbound messaging products and migrated legacy applications to Kubernetes and AWS, increasing scalability and reducing infrastructure costs.

Java Kubernetes AWS MySQL Oracle Jules ServiceNow Microservices

Software Developer

Southwest Airlines

Oct 2019 - Aug 2020 (10 months)

Enhanced baggage and cargo tracking systems using TDD and Agile practices, delivering front- and back-end features and improving system quality via unit and integration testing.

Java React TDD CI CD Swagger Agile

Education

Degrees, certifications, and relevant coursework

Dev10 Coding Bootcamp

Certificate, Full Stack Web Development

2019 - 2019

Completed an intensive Full Stack Java-focused bootcamp covering Spring Boot, MySQL, REST APIs, and unit testing with a capstone web application project.

University of Louisiana at Monroe

Bachelor of Arts, Psychology

Completed a Bachelor of Arts in Psychology with a minor in Business Administration, emphasizing foundational studies in psychology and business principles.