Deep Linux roots
Over three decades spanning shell scripts, container orchestration at the edge, and ephemeral shells. I know exactly where the pain lives and the vast gaps between documentation, expectations and reality.
Open to training and consulting engagements
Chrysanthos Rouvellas
Lead Support Engineer · Fundamentals Evangelist
Systems architect · Technology aficionado
Technical training Infrastructure consulting
Nearly 30 years living inside Linux terminals. I train teams from first principles, consult on infrastructure and networks others won't touch, and turn complex systems into knowledge people can wield.
- 0
- Years on Linux
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- Client satisfaction (career)
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- Ticket reduction via automation
Linux prod 6.18.35_1 SMP PREEMPT_DYNAMIC x86_64 GNU/Linux
chrysanthos@prod ~ $ whoami
chrysanthos: engineer, consultant, fundamentals evangelist, technology aficionado
chrysanthos@prod ~ $ uptime
calculating kernel wisdom…
chrysanthos@prod ~ $
Click terminal or tabs to switch sessions
Fundamentals first.
Everything else follows.
Tools change daily, especially now with AI, LLMs, and MCP. But the TCP/IP stack, Windows and Linux kernels, and the reasons systems and networks fail? That knowledge compounds forever. I demystify complex, high-risk infrastructure flaws, breaking them down into clear, actionable steps that eliminate outages and lower long-term maintenance costs.
Fundamentals evangelist
I never just hand someone a runbook and walk away. I teach people to act with purpose by understanding the reasoning and impact behind every decision. I have trained engineers across Linux, automation, APIs, databases, SQL, and AI.
Technology aficionado
From VPN sessions, BGP peering, and proxychains with socket-level debugging, to Linux fleets, container configuration, databases, and AI business analytics. I connect layers 1 through 7, on-premise to cloud, and engineering teams to the outcomes they actually need.
The stack I live in
From kernel to BGP, automation to AI. The same fundamentals, applied at every layer.
workstation · eth0
dhcp · 10.0.0.1
dns · ns.internal
prod.internal
Linux & Systems
Networking
Cloud & Automation
Leadership
AI
What I build
Open-source experiments and production tooling. The kind of work that backs up the terminal prompt.
Linux
Configs, notes, and deep dives from decades inside the kernel and userspace. Fundamentals documented, not just used.
30+ years of notes, configs, and troubleshooting patterns.
View repo →NetworkAutomationProject
Automation for network operations. Repeatable tooling that turns tribal knowledge into something a team can run at 3 AM.
Built for change windows, audits, and on-call at scale.
View repo →RTFM
Reference material and runbooks. The best engineers leave a trail others can follow when production gets interesting.
Runbooks and knowledge bases used across teams and shifts.
View repo →Where I've shipped impact
$ git log --author=chrysanthos
Amazon (OTS)
Lead Support Engineer, Canada East
- L&D team: mentor org-wide, create and approve training curricula
- Nautilus team: business analytics and AI tooling for senior leadership
- Migrating infrastructure and networks Canada-wide
Amazon (AR R&D)
System Developer Engineer
- Network consulting for SCADA and OT network integration across manufacturing workcells
- Designed firewall rules and ACLs for on-prem ↔ cloud connectivity
- Deployed, patched, and maintained global Linux fleet, edge infrastructure and stations
Amazon (OTIE)
Network Developer Engineer
- Built IPv6 OOB management network: runbooks, APIs, Linux configs, change workflows
- Troubleshot BGP, VPN, Linux, and container issues at scale
- Designed local site cache logic for container images, firmware, and software
Amazon
Lead Support Engineer, YHM Node
- OT/SCADA network integration, Layers 1 to 3 diagnosis; vendor and cross-team coordination
- Created recovery methodologies, 40% faster site restoration
- Owned change management review and custom solutions for edge cases
Binatech System Solutions
Systems Administrator
- Managed 100+ SMB infrastructures: patching, DR, SIEM, firewalls, VPN
- Automated recurring tickets with Lua & PowerShell, 60% ticket reduction
- Consulting drove 30% sales increase; hardened networks with least-privilege GPOs
Concentrix
Senior Technical Advisor
- 95%+ client satisfaction, 90% first-contact resolution, 100% issue closure
- Mentored team on technical and customer-service skills
- Piloted new ERP program; authored policies and knowledge base articles
Numbers that tell the story
0
Faster site recovery
Deep diving led to new methodology
0
Fewer tickets
Automation with Lua & PowerShell at Binatech
0
Sales growth
Client consulting and reliability wins
0
Satisfaction
Client satisfaction across technical advisory roles
Certifications & Education
$ trust list
- ITIL 4 Foundation
- CompTIA A+
- CompTIA CySA+
- Cisco CCNA
- AWS Practitioner
- S905: ScyllaDB Essentials Track
- AI Solutions on Cisco Infrastructure Essentials
- Trios College, Network Administrator, 2020
What I offer
Hands-on consulting, structured training, and targeted programmes to cut recurring costs. I work with manufacturing teams, SMBs, and enterprise infrastructure groups running Linux at the edge or at scale.
- Workshop half-day to multi-day, on-site or remote
- Assessment 1 to 2 week infrastructure or network review
- Engagement project-based consulting with handover
- Retainer ongoing advisory and escalation support
Consulting
Assess, design, and fix infrastructure your team can run without me in the room.
Training
Curricula and workshops built from first principles, not slide decks.
Cost reduction
Tickets & root cause
Contact
How can I help — training, consulting, or both?
Need a trainer who builds curricula your org will actually use? A consultant who can untangle Linux fleets, networks, manufacturing edge cases, or cloud architecture? Or both: assess, fix, and leave your team smarter than they started? I work with manufacturing, SMB, and enterprise teams. I'd like to hear from you.