Defending Systems.
Architecting Cloud Security.
I am Serge-Antoine Keou Ketchiozo, a systems technologist and aspiring Cloud Security Engineer specializing in multi-tier database architectures, defense-in-depth security, and cloud scalability. Equipped with verified AWS and Harvard CS50 certifications and field cybersecurity operations experience.
$ whoami
Serge-Antoine Keou Ketchiozo
$ cat university_status.json
"institution": "University of Central Florida",
"degree": "B.S. in Information Technology",
"status": "Senior Standing",
"current_gpa": "3.1",
"expected_grad": "December 2026"
}
$ cat credentials_active.list
- AWS Academy Graduate: Cloud Architecting
- AWS Academy Graduate: Cloud Foundations
- Harvard University CS50x Certificate
$ uptime --mission
Building resilient, zero-trust cloud infrastructure.
Technical Competencies
Systems Engineering & Cloud Core
Cloud Infrastructure & AWS
Hands-on multi-tier architecture design in AWS VPC, EC2, S3, IAM granular policies, Route53, and cost/resilience optimization.
Cybersecurity & Forensics
CVSS vulnerability analysis, packet inspection, incident triage, BitLocker system deployments, and endpoint defense.
Database Systems & JDBC
Two-tier client-server enterprise architecture, relational modeling, complex SQL schemas, and Java Swing interfaces with PreparedStatements.
Software Development
Object-oriented architecture and algorithms in C, Java, Python, and modern web application logic with HTML5, CSS3, and JavaScript.
Operating Systems & CLI
Dual-environment administration across Windows 11 with WSL2, Ubuntu Server, Kali Linux security testing environments, and PowerShell scripting.
Networking & Protocols
TCP/IP stack, subnets, CIDR notation, DNS hierarchy, firewall access control lists (ACLs), TLS handshakes, and network traffic modeling.
02. Academic Foundation
University Degree & Specialized Coursework
Integrating deep computational theory, network security, enterprise database systems, and cloud management.
University of Central Florida
College of Engineering and Computer Science • Orlando, FL
Senior Standing • Exp: Dec 2026
The Bachelor of Science in Information Technology at UCF prepares students to design, implement, configure, and secure mission-critical computing infrastructure. The curriculum balances enterprise network engineering, modern database architecture, security governance, and scalable cloud computing.
Eastern Florida State College
Computer Programming and Analysis
Completed core software foundations, object-oriented application design (Java, C#, C++, Python), relational data design, and client-side web development.
Lycée Polyvalent de Cachan
Cachan, France
French High School Diploma with scientific and technical concentration. Bilingual fluency in French and English.
03. Validated Competency
Verified Certifications & Digital Badges
Click any credential to verify directly on Credly or edX
Cloud Architecting
Demonstrated competency in designing highly available, cost-effective, decoupled, and secure cloud environments on Amazon Web Services.
Cloud Foundations
Validated foundational knowledge of AWS cloud security principles, compliance frameworks, billing, storage, compute, and networking fundamentals.
CS50x: Computer Science
Completed rigorous 12-week intensive computer science program covering memory management, low-level pointers in C, Python, algorithms, data structures, and web development.
04. Engineering Portfolio
Featured Systems & Security Projects
Applied software systems, database engineering, cloud security gateways, and multi-user client-server implementations.
Two-Tier Client-Server Database System with Dual GUIs & RBAC Telemetry
Engineered an enterprise-grade two-tier client-server relational database management architecture in Java Swing utilizing JDBC. Features role-based access control (RBAC) across root and restricted client users (client1, client2), paired with an automated background telemetry subsystem (project3app) logging query execution counts into a segregated auditing schema (operationslog) accessed by a dedicated accounting console (theaccountant).
Tested across 43 verified execution states & transaction logging runs.
Multithreaded Banking & Regulatory Currency Transaction Simulator
Architected a high-throughput, multi-agent concurrent banking simulator in Java utilizing java.util.concurrent.locks.ReentrantLock and explicit condition signaling. Orchestrated 19 concurrent thread agents (5 Depositors, 10 Withdrawers, 2 Transfer Agents, 1 Internal Auditor, and 1 U.S. Treasury Regulatory Auditor) over shared account resources, enforcing mutual exclusion, deadlock avoidance, and automated Money Laundering Suppression Act (1994) compliance logging.
Verified across 19 cooperating agents with zero deadlocks or lost updates.
Hardened Multi-Tenant AI Gateway & Zero-Trust Reverse Proxy
Designed a production-ready asynchronous API reverse proxy for multi-tenant microservices. Integrates automated PII redaction (Presidio Engine), token-bucket rate limiting via Redis, structured audit logging, and prompt-injection firewall inspection before requests hit backend LLM endpoints.
Sub-millisecond token verification with asynchronous Redis pipelining.
Nile Dot Com E-Store Application & Automated Ledger System
Constructed a standalone Java GUI desktop application managing shopping cart states, item lookups, automated subtotaling with state sales tax calculation, and synchronized transaction recording in an audit-ready CSV ledger. Built with robust input validation, dynamic inventory management, and invoice generation.
Strict separation of view controllers, calculation engine, and invoice persistence.
World Capitals Interactive Assessment Engine
Engineered an interactive global geography assessment engine developed as the capstone project for Harvard University's CS50x. Implements randomized question queuing, multiple difficulty tiers, real-time countdown timer listeners, dynamic scoring models, and persistent session records.
05. Professional Track Record
Field Engineering & Operational Roles
Cybersecurity Engineering Intern
- Vulnerability Management & CVSS Scoring: Conducted system-wide vulnerability scans, analyzed network exposure scores, and mapped remediation strategies prioritizing Common Vulnerability Scoring System (CVSS v3) risk levels.
- Intrusion Analysis & Incident Logging: Analyzed centralized authentication and server logs to triage Indicators of Compromise (IoCs), identify distributed brute-force vectors, and isolate credential-stuffing patterns.
- Secure Baseline Configuration: Authored and automated local policy object (LPO) USB device restrictions using PowerShell, secured master BitLocker encryption keys, and configured system deployment baselines.
- Digital Forensics & Packet Analysis: Executed device image captures with FTK Imager and performed deep packet inspection using Wireshark to investigate simulated network intrusion pathways.
- SOC / CSIRT Operations Support: Collaborated on Defense in Depth and Zero-Trust network segmentation models, supporting the national security operations framework.
Logistics & Customer Inventory Associate
- Managed daily retail stock rotation and strict product availability metrics across high-volume departments.
- Assisted multicultural French clientele with merchandise inquiries and maintained rigorous shelf replenishment standards under pressure.
Initiate Engineering Contact
Open to Cloud Security Engineering, Cloud Architecture, DevOps, and Enterprise Systems roles. Let's discuss infrastructure resilience.