Юрій

Mamchur Yurii
City: Prague
Phone number: [відкрити контакти](див. вище в блоці «контактна інформація»)
Telegram: @Selest1n
E-mail address: [відкрити контакти](див. вище в блоці «контактна інформація»)
LinkedIn: Here

Work experience

Head of Infrastructure
Sharkscode, Prague| 2025 — Present

Key Responsibilities:

● IaC Implementation: Spearheaded the introduction of Terraform across all projects to
ensure infrastructure consistency and scalability.
● Cloud Transformation: Orchestrated the large-scale rebuilding and migration of
infrastructure from on-premise Kubernetes (bare metal) to AWS EKS.
● Database Modernization: Managed the migration of self-hosted MySQL databases to
Amazon Aurora, improving reliability and performance.
● Governance & Standardization: Authored comprehensive policies for infrastructure
architecture, including naming conventions, cluster update procedures, and disaster
recovery/backup strategies.
● Auditing & FinOps: Conducted full-scale infrastructure audits and inventory assessments;
managed budgeting and cost-optimization initiatives.
● Leadership & Talent: Led recruitment efforts and formed dedicated DevOps teams;
identified technical debt and integrated its resolution into the strategic roadmap.

DevOps Engineer Lead
Sharkscode, Kyiv | 2021 — 2025

Key Responsibilities:

● Containerization: Rebuilt and migrated legacy infrastructure to Kubernetes (bare metal)
utilizing Ansible for automation.
● CI/CD Optimization: Developed unified GitLab CI/CD templates for all services,
implementing strict versioning control.
● Application Delivery: Authored and maintained versioned Helm charts to streamline
service deployments.
● Network Infrastructure: Designed and implemented a centralized VPN-core server
(WireGuard) to provide a single, secure access point for multiple projects.
● Observability: Established comprehensive monitoring, alerting, logging, and backup
systems to ensure high availability.
● Traffic Management: Configured and optimized Cloudflare, Nginx, and HAProxy for secure
and efficient traffic routing.
● Database Administration: Hands-on installation and management of MySQL, MongoDB,
Redis, PostgreSQL, ClickHouse, and RabbitMQ.
● Compliance: Played a key role in preparing the infrastructure for successful PCI DSS
certification.

DevOps Engineer
Sharkscode, Kyiv | December 2020 — 2021

Key Responsibilities:

● Hybrid Cloud Management: Built and maintained infrastructure across Google Cloud
(GCP) and VMware vCloud Director.
● Pipeline Support: Established and supported GitLab CI/CD workflows to automate
software delivery.
● Environment Orchestration: Provisioned and managed environments for Dev, Pre-Prod,
and Production stages.
● Container Orchestration: Utilized Docker Swarm for service management and
deployment.
● Networking & DNS: Configured OpenVPN, Cloudflare, Nginx, HAProxy, and Bind9.
● Data Stack: Managed the administration and performance tuning of various database
systems (SQL/NoSQL) and message brokers.

DevOps Engineer
From December 2019 till today
React, Kyiv

Responsibilities:

● Support for company server infrastructure (Linux, nginx, iptables,
Docker, Swarm, Kubernetes, GitLab)
● Ensuring continuous operation of the system
● Deploying new infrastructure nodes, configuration automation
● Participated in projects to configure fault-tolerant systems
● Deployment of new sites, transfer/reservation of existing sites, problem solving
● Configure cloud web services (Cloudflare, AWS)

System administrator
From November 2018 till December 2019 (1 years and 1 months)
Skywell Software, Kyiv https://skywell.software

Responsibilities:

● Support and maintenance of our servers located in data centers: CentOS, Debian,
Windows Server
● Support for CISCO-based network infrastructure
● User Support: Windows, Ubuntu
● Implementation and transition of the server infrastructure into the virtualization
environment built on the Proxmox cluster
● Administration and support of services: Office 365, OpenVPN, Azure, CloudFlare, DC,
IPsec, CleanBrowsing DNS,
● For safety:
o Implementation of user authorization in the network using the RADIUS protocol
o Scanning networks with an OpenVAS vulnerability scanner, and eliminating
them if any
o WAZUH deployment - host monitoring and intrusion detector

System administrator
From May 2013 till December 2018 (5 years and 7 months)
Lavrynovych & Partners, Kyiv (Law Firm)

Responsibilities:

● Windows family Services/Servers deployment; Active Directory Domain Services,
DNS Server, Remote Desktop Services, ISA Server, DHCP Server, File Services, Print
Services, ESET remote administrator, VMware ESXI 5.5.0, Windows Server Update
Services, 1C 7-8 Programs, LIGA ZAKON Server.
● Linux Debian Services/Servers deployment; web Server, ZABBIX System for
monitoring, Mail Server iRedMail.
● Administrating server/network hardware; mini-PBX, VMware ESXI 5.5.0, Mail Server
M-Daemon, 1C 7-8, company’s intranet site, NAS Server, web, System for monitoring
ZABBIX, Mail Server iRedMail, Wi-Fi;

● User support/training for office applications and office supplies.
● Support and maintenance of servers at two remote locations.
● Repairing equipment, notebooks, and personal computers.
● Managing and creating technical documentations; developing instructions, managing
equipment reporting.
● Office equipment maintenance; cartridge change/refill, conducting office equipment
repair in core enterprises.
● Purchasing computer equipment, notebooks, computers, servers, networking
equipment, office equipment and other units.
System administrator
From June 2009 till January 2010 (7 months)
ASNA TRAVEL, Kyiv (Tourism)

Responsibilities:

● Administrating website and online tour booking system.
● Mail, Internet Server, peripheral equipment, PC assemblage and repair.
System administrator
From August 2007 till April 2013 (5 years and 8 months)
"Angely Techno" - "Ai Techno", Kyiv (Designing: Fire safety, conditioning, video monitoring).

Responsibilities:

● Selecting/purchasing parts for new PC, PC assemblage, software installation.
● Installation of network routers, WI-FI routers/access points.
● Administrating antivirus NOD32 + ESET Remote Administrator software.
● Diagnostics and damage repair of work stations, notebooks, monitors, peripheral equipment.
● Experience in cartridge refill (laser printers).
● Administrating Windows 2003-2008 - Deployment services, Domain services Active Directory,
DHCP-server, DNS-server, file server, terminal server, printing server, software based firewall Kerio
Control, Mdaemon mail.
● Maintaining mini-PABX Panasonic KX-TD1232.
● Administrating accounting server, Me-Doc, 1С7-1C8 (within the competence).
● Planning and extending internal network of the company, due to the company growth.
● Administrating servers of the company, providing its continual activity.
● Setting hardware of servers and server equipment.
● Dealing with non-typical, sophisticated technical situations in short terms.

Additional education
NAU (System Administrator advanced training) (for a year)

Web Academy programming courses Kiev (DevOps)

Professional and other skills
Diagnostics and units repair of computers and other technology. (5 years of experience)