SECURE
// systems administration and development

Infrastructure
under protection

Server administration, security, development, automation and AI — from idea to implementation.

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7+ yearsin administration
4+ yearsin security
10+servers protected
Andrey Semionov
Andrey Semionovlinux@administrator
About me

Systems administrator, from task to result

Linux caught my interest back in 2008, and it's been more than a hobby ever since.

Systems administration: I've worked with servers and security for over 7 years — from single VPS setups with nginx, nftables and fail2ban to full infrastructure and architecture.

Programming: WordPress, Joomla, Laravel, Python and PHP scripts. No middlemen — we discuss the task directly, and I'm the one who delivers it.

Beyond administration, I automate routine work and bring in AI where it genuinely saves time.

Other projects: I also run sysadmin.courses — a training course on administration and security.

7+years experience
10+servers
0middlemen
Technologies I work with
Why work with me

Advantages of working directly

No agency, no extra links in the chain — direct contact with the person accountable for the result.

01

Fast response

Average response time is under 2 hours. Critical issues are handled with priority.

02

Security by default

Every setup goes through a hardening checklist — firewall, fail2ban, least-privilege access.

03

Transparent pricing

Fixed pricing for standard tasks, no hidden fees or overtime charges.

04

AI in service of business

Claude-based chatbot integrations — not for the hype, but for real time savings.

05

7+ years of experience

Over 10 servers under management — from small projects to high-load systems.

06

Automating routine work

Python scripts take over manual work — backups, monitoring, API integrations.

Services

How I can help

Hover over a tile to see details and pricing.

uname -r
6.17.0-35-generic
active
01

Systems Administration

from €150 / mo
Server setup and support: nginx, databases, deployment, monitoring, backups.
nft list ruleset
table inet filter { chain input { type filter hook input } }
active
02

Security & Hardening

from €300 / audit
Vulnerability audits, firewall, fail2ban, attack protection, bringing servers up to security standards.
claude api --deploy
Deployment successful ✓ Endpoint: /v1/chat
active
03

AI Integrations

from €100 / project
Chatbots, LLM-based automation, AI integration into existing services.
systemctl list-timers
NEXT UNIT 02:14 backup.timer
active
04

Scripts & Automation

from €80 / script
Python and PHP scripts for specific tasks: parsing, API integrations, automating routine operations.
aws ec2 describe-instances
{ "State": "running", "Type": "t3.medium" }
active
05

AWS & Cloud Infrastructure

from €200 / project
EC2, S3, VPC, IAM setup — from individual services to full cloud architecture.
tail -f error.log
[OK] Fixed: 502 Bad Gateway [OK] nginx reloaded
active
06

Website Fixes & Troubleshooting

from €60 / task
Diagnosing and fixing errors, outages, and vulnerabilities on existing websites.
nginx -t && systemctl reload
syntax is ok test is successful
active
07

Hosting & Website Maintenance

from €40 / mo
Hosting, monitoring, updates, and ongoing technical support for your website.
01

What's included

    Let's discuss your task?

    Message me in chat — I'll reply within 2 hours with an exact price for your case.

    Message me
    Contact

    Let's discuss your task

    Fill out the form or reach out directly — I'll reply within 2 hours with a concrete plan and price.

    Telegram@AndreySemionov
    Response timeusually under 2 hours

    Thank you! Your message has been sent — I'll get back to you shortly.

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