Systems & Network Engineer
Cybersecurity Engineering Student · Junia ISEN
Currently serving as a Systems & Network Engineer apprentice, with 3 years of hands-on IT infrastructure experience across systems administration, networking, monitoring, backup, virtualization and operational security in production environments.
Production
Enterprise systems
Multi-site
Network infrastructure
3+ years
Field experience
3 years in production infrastructure. Volunteer firefighter since 2022.
Arthur WALLOIS is a Systems & Network Engineer apprentice at BY THE WAY, and a cybersecurity engineering student at Junia ISEN in Lille.
Three years moving from helpdesk to systems and network engineering. I work on production infrastructure every day, not just in labs.
Helpdesk
Systems & Network Administration
Systems & Network Engineer
Current→ Open to international internship opportunities in 2027.
Volunteer Firefighter · SDIS 62
Oct 2022 – Present · Aire-sur-la-Lys, France
A long-standing commitment driven by a simple motivation: being useful and helping others when it matters most.
From helpdesk to systems administration and network engineering. Three years of progressive roles operating real enterprise infrastructure.
BY THE WAY
Current roleSystems and network engineering with focus on operational security, EDR deployment, firewall administration, VMware datacenter management and disaster recovery planning.
BY THE WAY EXPLOITATION
Infrastructure administration covering monitoring, backup, endpoint security, network security appliances and incident management across hybrid environments.
CAPEONI
Level 1/2 support, incident handling, user support, workstation deployment and foundational systems & network troubleshooting.
Operational skills across systems, infrastructure services, networks, security, cloud, monitoring and automation.
8 open-source projects on GitHub, from PCAP analysis and malware triage to honeypots, recon and DevSecOps. Built primarily in Go, with Python for automation.
Network analysis, malware triage and DevSecOps. The core of the profile.
PCAP analyzer in pure Go. Reconstructs network flows and detects suspicious behavior: beaconing, DNS tunneling and DGA-like domain names. Built for network analysts and SOC workflows.
Static file analyzer for malware triage: hashes, PE/ELF/Mach-O headers, entropy scoring, string extraction, signature rules and IOC cross-referencing.
Static secret scanner for source trees. Detects AWS keys, GitHub tokens, JWTs and private keys via regex and Shannon entropy, with SARIF export for CI pipelines.
Defense, reconnaissance and polyvalence across Go and Python.
SSH and HTTP honeypot exposing decoy services, logging intrusion attempts as JSONL and correlating activity by IP: SSH bruteforce, web scans and mixed attack patterns.
Network surface scanner with concurrent TCP scanning, banner grabbing, TLS inspection (certificates, cipher suites, alerts) and service fingerprinting.
Python recon toolkit: subdomain enumeration via crt.sh and wordlists, HTTP probing (status, title, headers) and JSON export.
Python automation and tooling outside the security focus.
Async monitoring bot for Vinted listings: rule-based flip filters, YAML config and Telegram/Discord alerts. Clean async architecture.
Reseller margin calculator and inventory tracker. Estimates fees (Vinted, eBay, Depop), ROI, break-even and manages a lightweight JSON inventory.
Engineering studies focused on computer science, systems, networks and cybersecurity.
Junia ISEN
ESGI
Open to international internship opportunities in 2027.
Open to international internship opportunities in 2027.
