Summary
Overview
Work history
Education
Skills
Timeline
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Felix Paul Sahaya Selva Xavier

Felix Paul Sahaya Selva Xavier

Leuven,Belgium

Summary

Applied Computer Science student majoring in Cybersecurity, currently seeking an internship in Belgium. Former Army Sergeant with 2 years of leadership, operational discipline, and crisis management experience—skills that directly support high-stakes cybersecurity environments. Proficient in vulnerability assessment, penetration testing, secure coding, and OWASP Top 10 mitigation. Hands-on experience with tools such as Wireshark, Burp Suite, and Nmap, as well as secure authentication and network hardening.
Complemented by a solid technical foundation in Python, SQL, Java, JavaScript, and TypeScript, with practical knowledge of full-stack development, databases, and systems administration. Currently expanding expertise in cloud security and incident response. Brings a security-first mindset, strong work ethic, and commitment to continuous learning and contribution.

Overview

2
2
years of professional experience

Work history

Army sergeant

Singapore Armed Forces
Singapore, Singapore
08.2021 - 08.2023
  • Trained new recruits, resulting in highly skilled and disciplined soldiers.
  • Provided advice to junior officers to help them develop their leadership skills successfully.
  • Ensured troop readiness through regular drills and exercises.
  • Led squad during training exercises for enhanced team cohesion.
  • Managed daily roll calls, maintaining order and discipline.
  • Coordinated logistical support, ensuring smooth operations.

Technician

PowerQ
Singapore, Singapore
04.2021 - 08.2021
  • Maintained a clean and organised work environment, ensuring strict adherence to GMP and health & safety regulations.
  • Collaborated with engineers and cross-functional teams to support smooth project execution and equipment maintenance.
  • Conducted air balancing procedures using instruments such as balometers and veloameters to ensure HVAC system compliance and optimal airflow in cleanroom environments.
  • Monitored and managed inventory of spare parts to maintain optimal stock levels, supporting uninterrupted maintenance workflows.
  • Promoted sustainability by minimising resource waste and optimising material usage in day-to-day tasks.

Completed project - Lonza, MSD

Education

Certificate of Higher Education - Science with computer science

Global School Foundation
Singapore
04.2019 - 03.2021

Bachelor of Arts - Applied Computer Science

Univercity College Leuven-Limburg
Leuven, Flemish Brabant Province
09.2023 -

Skills

Languages & Frameworks: Python, Java, JavaScript, TypeScript, SQL, React, Nodejs, Expressjs, Nextjs
Databases & Tools: PostgreSQL, Prisma, MongoDB, Flyway, Docker, Postman, Git, Maven
Cybersecurity: OWASP Top 10, network security, role-based access control, JWT, secure coding, Linux/Windows privilege escalation, cryptography (SHA-256, encryption), firewall & IPtables, incident response basics
Systems & Networking: Linux (Ubuntu/Kali), Windows Server, DNS, DHCP, NTPsec, bash scripting, packet analysis (Wireshark, Nmap), Metasploit (basic)
Testing & QA: JUnit, Mockito, Cypress
Data EngineeringReal-time data ingestion (RFID), PostgreSQL optimisation
Leadership & Soft Skills: Tactical decision making, team coordination, time management, problem-solving, adaptability, effective communication, cross-cultural collaboration

Timeline

Bachelor of Arts - Applied Computer Science

Univercity College Leuven-Limburg
09.2023 -

Army sergeant

Singapore Armed Forces
08.2021 - 08.2023

Technician

PowerQ
04.2021 - 08.2021

Certificate of Higher Education - Science with computer science

Global School Foundation
04.2019 - 03.2021
Felix Paul Sahaya Selva Xavier