Костянтин

Kostiantyn Yagusevych
System Administrator · Linux & Windows
[open contact info](look above in the "contact info" section) · [open contact info](look above in the "contact info" section) · [open contact info](look above in the "contact info" section) · github.com/kiurakku

System administrator with practical experience across IT support (Grandit), SAP system administration (Kindgeek), DevOps
infrastructure (SoftServe), and AI platform management (IDENTRA AI). Scripting-first approach — automates what can be
automated. Familiar with both SMB and enterprise environments. Certified in Ethical Hacking and DevOps; currently
completing B.S. in Cybersecurity.

TECHNICAL SKILLS
OS & Servers Linux (Arch, Debian, Ubuntu) — primary; Windows Server (AD, GPO, DHCP, DNS, RDS)
SAP SAP system administration — user management, transport system, system monitoring,
basis config
Networking TCP/IP, DNS, DHCP, VPN (WireGuard/OpenVPN), VLAN, firewall (UFW/iptables), Nginx
reverse proxy
Automation Bash, Python, PowerShell; Ansible for config management; Terraform for infra provisioning
Monitoring Prometheus, Grafana, Loki, Alertmanager, ELK — dashboards, alerting, log analysis
Security SSH hardening, fail2ban, TLS/SSL, RBAC, Nmap, Nessus vulnerability scanning, OSINT
techniques
Virtualization Docker, Kubernetes basics, VMware/VirtualBox, VPS management
Backup rsync + cron/systemd automated backups, offsite storage, restore testing

PROFESSIONAL EXPERIENCE

AI Access Intelligence Architect · IDENTRA AI Apr 2026 – Present
Hybrid · Ukraine · Full-time
▸ Managing cloud infrastructure and access control for an AI platform in a hybrid environment.
▸ Automating deployment and monitoring workflows; maintaining security posture and service uptime.
Arbitration Case Support Specialist · NICELY.GROUP Oct 2025 – Nov 2025
Hybrid · Full-time
▸ Deployed Prometheus + Loki monitoring stack; reduced issue detection time from hours to minutes.
▸ Diagnosed platform incidents and coordinated fixes with the development team.
SAP System Administrator · Kindgeek Jun 2025 – Sep 2025
Hybrid · Lviv · Full-time
▸ Administered SAP environments: user accounts, transport management, system health monitoring.
▸ Automated admin workflows with Python/Bash scripts; maintained Ansible playbooks for config management.
▸ Built Grafana dashboards for SAP and infrastructure monitoring; integrated security scans into CI/CD.
Junior DevOps Engineer · SoftServe Feb 2025 – May 2025
Remote · Part-time
▸ Managed Linux servers and Docker/Kubernetes infrastructure; implemented rolling deployments with zero
downtime.
▸ Provisioned environments with Ansible and Terraform; maintained CI/CD pipelines.
Python & Cybersecurity Coach · American Young Coder School Nov 2024 – Mar 2025
Remote · Full-time
▸ Taught Linux fundamentals, Bash scripting, and server administration basics to 100+ students.
IT Support Specialist · Grandit Sep 2016 – Mar 2018
Hybrid · Lviv · Part-time
▸ IT support: hardware troubleshooting, OS setup, network config, user account management. (Part-time, early career)
FREELANCE & PROJECTS
Freelance projects · Various clients · Ongoing
▸ Provisioned and hardened VPS environments: SSH key-only auth, UFW rules, fail2ban, automatic security updates.
▸ Set up full monitoring stacks (Prometheus, Grafana, Loki, Alertmanager) for production apps from scratch.
▸ Automated TLS certificate renewal (Let's Encrypt); Nginx reverse proxy with SSL termination.
▸ Ansible playbooks for repeatable provisioning; rsync-based automated backup with restore verification.
HMH.EXPERT · Technical Consultant
▸ Architecture review, bug investigation, and technical consulting for a freelance marketplace platform.

EDUCATION & CERTIFICATIONS
B.S. in Cybersecurity · Lviv Polytechnic National University 2023 – 2027 (exp.)
Cybersecurity & DevOps · SoftServe IT Academy 2025
Software Development & Web Tech · IT Step Academy 2016 – 2021

Certifications: Ethical Hacking (White Hacker) · DevOps (SoftServe IT Academy) · Linux (KillerCode)

LANGUAGES
Ukrainian — Native · English — B2 Upper-Intermediate · German / Polish — A2