Systems administrator with 11+ years across Linux production environments. Specialisation in the Linux stack (CentOS, Debian), databases up to 10 TB (MySQL, PostgreSQL), monitoring (Zabbix), virtualisation (Proxmox), and the Atlassian ecosystem. Background in 24/7 SLA support, complex incident response, and end-to-end ownership of production infrastructure — from monitoring and CI/CD to backups and zero-downtime migrations.
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Experience
WORK
Hopper Support LLC
2020.04 → 2023.01
Remote · 2y 9m
Senior Systems Administrator
24/7 SLA support for nationwide-scale projects; production segment on CentOS / RHEL, with continuous identification and remediation of suboptimal operational patterns.
Architecture, installation, backup, monitoring and tuning of Atlassian and Bitrix product stacks.
Client web-application architecture — LEMP with Node and Redis; maintenance of Java services.
Migrated a 50+ GB organisation from Atlassian Cloud Jira to on-prem, then to a data-centre environment.
Stood up GitLab CI/CD with automatic QA-stand deployment on the Traefik + GitLab + Ansible stack.
Teaching Linux fundamentals to QA engineers and developers across multiple educational programmes; designed curricula covering shell, networking, systems internals, and production troubleshooting.
Systems Architect @ Atlant LLC
Did all IT for a tiny local project from scratch. Monitoring their functionality and software updates
Incident troubleshooting, workflow organisation, task automation, backup strategy, and rollout of new features.
Deployed corporate mail server from scratch (Postfix + Dovecot, SPF/DKIM/DMARC, anti-spam pipeline).
Designing and operating personal production infrastructure end-to-end: multiple Linux servers, containerised services, private networking, TLS automation, Cloudflare Zero Trust (reverse-proxy, service tokens, tunnel-based edge access).
Custom synchronisation engines (Python): structured knowledge-base mirroring, idempotent backfill, dedup/merge with clustering rules, full change audit.
Telegram bot fleet (async Python) for operations automation, message routing, remote control of services, and cross-platform forwarding.
MQTT message bus for cross-service telemetry and control; custom publishers/subscribers in Python; systemd-based monitoring agents.
CI/CD: GitHub Actions pipelines, webhook-triggered builds, containerised deployments via rsync and systemd timers.