Erik Horváth
SK – slovenská verziaCV (PDF)

Erik Horváth, DevOps Engineer, Nitra, Slovakia, remote, contract or B2B, full-time from 2027

I work in DevOps and full‑stack development. I’m moving into security and kernel-level systems.

At Marketeam I work on deployment, infrastructure and the backend. In my master’s thesis I read a running virtual machine’s memory from outside, with no collection agent in the guest.

E-mail meSee the work

Key facts

Now
DevOps Engineer, Marketeam, s. r. o., Nitrasince 02/2026
Roles
DevOps / platform, security engineeringalso backend / full-stack, low-level systems
Looking for
Now: contract or B2B, remote. From 2027: also full-time, relocation possible.
Where
Nitra, Slovakia
Work authorisation
EU citizen (Slovakia): no work permit needed in the EU/EEA; in Switzerland the EU–Swiss free-movement agreement applies (L/B permit issued on registration, no employer sponsorship).
Start
immediately or by agreementfor contract or B2B work
Languages
Slovak (native)English B2
Education
BSc in Applied Informatics, UKF Nitra (2025)Master’s programme in progress
Stack
Python · PHP · C · SQL · Bash · Docker/Compose · GitHub Actions · GHCR · Nginx · Linux · eBPF · KVM

Selected work

  1. Master’s thesisUKF Nitra2026AI-assistedPython · C · eBPF · KVM

    What runs inside a virtual machine, read from its memory

    An attacker inside a virtual machine can switch off or fool a tool running there, so I work from outside: from a running KVM guest’s memory I rebuild its processes, kernel modules and sockets and cross‑check kernel structures for rootkits.

    It needs a guest kernel profile from the same boot, taken beforehand. The eBPF collector is an existing one that I adapted and fixed.

    Details : What runs inside a virtual machine, read from its memoryCode : What runs inside a virtual machine, read from its memory

    81 of 81

    processes stable during the snapshot were recovered — none missing, none extra. One validation session, checked against ps in the guest (ps listed 83).

  2. EmploymentMarketeam, s. r. o., Nitrasince 02/2026PHP · Symfony · Pretix

    Symfony 3.4 → 6.4, staging and cutting Pretix memory use

    I upgraded the company’s Symfony application by three major versions and built staging; Docker and CI/CD are in progress. Limiting Pretix’s concurrent worker processes cut its container memory from 6.7 GB to ~0.9 GB (measured at work).

    Details : Symfony 3.4 → 6.4, staging and cutting Pretix memory use

  3. Team project · 3 peopleinternship management system10/2025 – 01/2026Python · Django/DRF · Redis

    Backend and a custom OAuth 2.0 server

    I wrote 98.75% of the backend’s Python by git blame (excluding migrations), including an OAuth 2.0 server built without an OAuth server library; known gaps are listed with the code. Teammates built the frontend and SQL schema.

    Details : Backend and a custom OAuth 2.0 server

Working with me

For companies I take on deployment and infrastructure, backend and APIs, company websites, and security reviews of web applications (a review, not a penetration test).

Next step: an e-mail and a short call; in a technical meeting I walk you through selected code.

erik@erikhorvath.com, +421 948 177 942