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John TJT
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John T

@johnt1

Software engineer at CB Systems LLC and builder of VulnXplorer, a vulnerability-intelligence SaaS with paying users and database-enforced tenant isolation.

United States
Message

What I'm looking for

I’m focused on applying my background in application security and production LLM systems to secure agent systems and reproducible safety evaluations.

At CB Systems LLC, I drove an agent-assisted migration of a Java Spring Boot microservice from Java 17/Spring Boot 3 to Java 21/Spring Boot 4, reviewing every generated change by hand and resolving breaking changes to pass internal security testing.

I built VulnXplorer from concept to production SaaS with paying users, including a vulnerability-triage pipeline and graph-based security analysis engines. I secured its multi-tenant architecture with database-layer isolation verified by a regression suite, and built production RAG and summarization systems at MurmurCast. At the National Security Agency, I built Python and Spark anomaly-detection pipelines for classified, air-gapped workloads and won first place in the 2023 Bug Bowl.

Experience

Work history, roles, and key accomplishments

CL
Current

Founder & Software Engineer

CB Systems LLC

Aug 2026 - Present (2 months)

Providing software development services for the US Customs & Border Protection Cargo Division (CSPD). Drove an agent-assisted migration of a Java Spring Boot microservice from Java 17/Spring Boot 3 to Java 21/Spring Boot 4, resolving all breaking changes and authoring test cases for a defect caught in SAT.

Education

Degrees, certifications, and relevant coursework

Northern Virginia Community College logoNC

Northern Virginia Community College

A.A.S. Automotive Technology, Automotive Technology

2026 -

A.A.S. in Automotive Technology from Northern Virginia Community College, expected to complete in May 2029.

New York University logoNU

New York University

M.S. Cybersecurity, Cybersecurity

2020 - 2022

Grade: 3.7/4.0

M.S. in Cybersecurity from New York University, with a cumulative GPA of 3.7/4.0.

Syracuse University logoSU

Syracuse University

M.S. Cybersecurity, Cybersecurity

2019 - 2020

Grade: 3.917/4.0

M.S. in Cybersecurity from Syracuse University, with a cumulative GPA of 3.917/4.0.

University of Virginia logoUV

University of Virginia

B.A. Computer Science, Computer Science

2010 - 2014

B.A. in Computer Science from the University of Virginia.

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