Maksym Marchuk

Infrastructure / AI Automation Engineer / DevOps

Reliable infrastructure with automation built in.

Senior Linux infrastructure and DevOps engineer with 15+ years across production systems, virtualization, observability, backup strategy, and self-hosted AI workflow automation. Focused on resilient operations, clean recovery paths, and pragmatic automation.

Linux Proxmox Docker Zabbix Graylog n8n OpenAI API

Profile

Production ownership across infrastructure, observability, and AI automation.

Based in Koszalin, Poland, I work across Linux operations, multi-region service delivery, monitoring stacks, CI/CD, backup and disaster recovery, security hardening, and experimental AI systems. I have operated as the sole DevOps/SRE owner in multi-product environments and prefer systems that are measurable, repairable, and easy to reason about under pressure.

Current base Koszalin, Poland
Languages English, Ukrainian, Russian, Polish
Strengths High availability, recovery planning, cost-aware operations

Expertise

Hands-on capabilities across the operational stack.

Linux infrastructure

RHEL, Fedora, CentOS, Debian, Ubuntu, and FreeBSD basics across long-lived production environments.

Virtualization and containers

Proxmox with KVM and LXC, Dockerized services, backup flows, and Kubernetes proof-of-concept work.

Monitoring and logging

Zabbix, Nagios, Graylog, Wazuh, Grafana, and ELK-based visibility for incidents, trends, and control.

Networking and edge services

VPN, VLAN, firewalls, DNS, load balancing, mail authentication, and operational troubleshooting.

CI/CD and automation

Jenkins pipelines, deployment flows, Bash scripting, Node.js utilities, and lightweight automation tooling.

AI workflow systems

n8n orchestration, OpenAI API integration, self-hosted LLM experiments, and agent-style workflow design.

Experience

Recent roles and operating environments.

Yeesshh

Sep 2018 to Present

DevOps / Infrastructure / AI Automation Engineer

Own infrastructure across six dedicated OVHcloud servers, Proxmox nodes and clusters, custom backup storage, internal VPN, Dockerized services, and multi-region workloads spanning Europe and Canada.

  • Managed roughly 50 production services with 24/7 on-call responsibility.
  • Built centralized monitoring with Zabbix, logging with Graylog, and security monitoring with Wazuh.
  • Handled bare-metal recovery, DNS and email authentication, DDoS mitigation, and PCI-related validation work.

Freelance

Jan 2025 to Present

AI Automation & Infrastructure Projects

Built self-hosted automation environments around n8n, OpenAI API integrations, local LLM infrastructure, and multi-step prompt orchestration for practical recommendation, content, and aggregation workflows.

  • Integrated OpenAI through built-in tooling and custom Node.js proxy layers.
  • Deployed and tuned local model environments including llama.cpp-based stacks.
  • Explored multi-agent and cybersecurity-oriented AI automation patterns.

Lappka

Sep 2025 to Jan 2026

Self-employed Product Project

Built and released a mobile product with Flutter frontend, Dockerized Node.js backend, MySQL, Firebase and Google OAuth integrations, push notifications, and deployment owned end to end.

  • Delivered the app to Google Play with full-cycle ownership from architecture to release.
  • Hosted backend services on VPS infrastructure with minimal CI/CD automation.

LCloud

Jun 2021 to Jun 2023

CloudOps / SysOps Engineer

Provided AWS-focused L1 production support covering EC2, RDS, S3, IAM, backup and restore procedures, incident analysis, and documented infrastructure changes.

Projects

What I build and optimize now.

Infrastructure

Multi-region service operations

Production systems spanning EU and North America with backup strategy, observability, incident response, and recovery planning built into the platform.

AI Automation

Self-hosted workflow orchestration

Automation pipelines for recommendations, news aggregation, content flows, and controlled agent access using n8n, local models, and API integrations.

Security

Operational hardening

WAF and DDoS mitigation, mail authentication, malware cleanup, monitoring controls, and practical defensive improvements for exposed services.

Product Delivery

Application deployment ownership

Shipping mobile and backend products with Docker, MySQL, Firebase integration, and lightweight release automation from a single technical owner.

Contact

Available for infrastructure, DevOps, and automation work.

For infrastructure ownership, reliability work, self-hosted AI automation, or product-side operations support, reach out directly.