JHM

Extended Resume

John Henry Mejia

Supported F-22 Integrated Maintenance Information System (IMIS) program on the Systems Engineering Team.
Created high-level and component-level diagrams in Cameo, developed system requirements, and improved processes using Agile methodologies.
Modeled IMIS releases using Cameo (activity, sequence, parametric, use case, and block definition diagrams).
Managed DOORS and Cameo databases using DXL, SQL, Java, and Python, reducing document export time by 94%.
Led the requirements lifecycle from development to end-of-life and presented requirement changes to the Requirements Review Board.
Requirements Manager of IMIS

Migrated runbook backup system to AWS SQS + Lambdas, improving scalability, reducing backup time by 90.2%, and lowering costs by 71.4%.
Managed 14,700 daily runbook backups across 188 teams.
Automated database health monitoring using AWS S3, Lambdas, Step Functions, and Slack alerts.

Developed aircraft clustering algorithms for combat ID recognition using scikit-learn DBSCAN and OpenCV.
Maintained Jenkins pipelines to automate Grype security scans and email reports.
Created Java applets for converting flight data coordinate systems.

Led a team to automate transcription and question analysis of classroom audio for data-driven feedback.
Developed an automated transcription/diarization system using OpenAI Whisper and Pyannote.
Designed AI-based question categorization using Meta’s LLaMA-3.2, improving accuracy by 8.7% (71% → 77.1%).

Languages & Databases:
- Python
- UML
- SysML
- C#
- C/C++
- Java (Spring Boot, Apache Velocity)
- DXL (DOORS)
- R
- SQL
- Bash
- TS/JS
- HTML/CSS
Frameworks:
- Flask
- TensorFlow (Keras)
- Jenkins
- Kubernetes
- Docker
- VMWare
Libraries & Tools: NumPy, Pandas, Matplotlib, Scikit-learn, Git, AWS SQS + Lambdas, Linux (RHEL, Fedora)

TCU Rowing Team (2020 - Present): Coach / Former President / National Record Holder
Languages: English (Fluent), Spanish (Fluent)
Security Clearance: Secret

Last updated: March 2025