About Mykola
I'm Mykola, a Linux Security Engineer based in the Netherlands with
7+ years of hands-on experience hardening production servers,
automating secure deployments and recovering compromised systems.
I help startups, SMBs and agencies across the EU turn vulnerable
Linux infrastructure into audit-ready, intrusion-resistant systems —
guided by CIS Benchmarks, NIST 800-53 and DISA STIG, not guesswork.
WHAT I DO
- Linux server hardening on Ubuntu, Debian, RHEL, Rocky, AlmaLinux
- Firewall design: iptables, nftables, UFW, firewalld
- SSH lockdown, fail2ban, CrowdSec, brute-force mitigation
- Intrusion detection with Wazuh, OSSEC, AIDE and auditd
- Docker and Kubernetes security, rootless containers, SELinux/AppArmor
- Web server hardening: Nginx, Apache, ModSecurity WAF
- Self-hosted app deployment with full security: SuiteCRM, Nextcloud,
Mailcow, Gitea, Wazuh
- Incident response, log forensics and post-breach recovery
- VPN: WireGuard, OpenVPN, IPsec
- Automation with Ansible, Bash and Terraform
- GDPR-aware architecture for EU data residency
WHY WORK WITH ME
- EU-based, GDPR-aware, responsive during business hours
- Every engagement ends with a detailed report, documented changes
and a clean rollback plan
- No black-box work — you always know what was changed and why
- Honest scoping before I quote: I tell you what you need, not what's
expensive
AVAILABILITY
Open to short projects (audit, incident response, turnkey setup) and
longer DevSecOps engagements. Remote-first across the EU.
Let's connect if you need your Linux infrastructure hardened,
compliance-prepared or recovered after a breach.
English
Native or bilingual
Ukrainian
Native or bilingual
Remote only
Primarily works remotely
Experience
- ZT SystemsQuality Control TechnicianOctober 2023 - November 2025 (2 years and 1 month)Almelo, OV, NetherlandsServer Configuration & Testing: Performed end-to-end configuration, initialization, and stress testing of enterprise servers and rack systems for production environments.• ● Hardware Troubleshooting: Diagnosed hardware failures (CPU, RAM, Motherboard, PSU) and replaced faulty components to meet quality assurance standards.• ● System Deployment: Conducted initial setup, BIOS configuration, and connection of production servers, ensuring full readiness for shipping.• ● Quality Assurance & Ticketing: Managed internal ticketing systems to document, track, and resolve technical errors found during the testing phase.• ● Final Validation: Completed final product inspections and functional testing to ensure zero-defect delivery to clients.
- Marketing Call CenterSystem AdministratorJanuary 2021 - February 2022 (1 year and 1 month)Odesa, Odesa Oblast, Ukraine, 65000• ● Infrastructure Management: Installed, configured, and maintained enterprise-level Linux and Windows server environments.• ● User Administration: Managed active directory user accounts, passwords, and access privileges to ensure secure system access.• ● Technical Support: Diagnosed and resolved hardware and software issues to maintain maximum system uptime and operational efficiency.
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Education
- Bachelor's DegreeOdessa National Academy of Food Technologies2020Computer engineering
- Junior SpecialistCollege of Industrial Automation and Information Technologies2018software development