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Penetration Tester

RIMI NUX

I hunt vulnerabilities. With precision.

I'm Raimundas Mačiulis, a penetration tester specialising in offensive security. I find, exploit and clearly document flaws with precision, combining automated coverage with a hands-on manual approach, across web apps, networks, wireless and mobile, for organisations around the world.

Raimundas Mačiulis AVAILABLE FOR ENGAGEMENTS
riminux@pwn:~
$ whoami
> riminux
» click for next command
0+
Pentests completed
0+
Vulnerabilities found
0
High-tier certifications
Top 1%
CTF ranking worldwide
[ 01 / 05 ] ~/ops/services.sh

Services.

The vulnerabilities that actually matter, critical-severity issues, business logic flaws, and context-specific risks, most often surface through manual testing: thinking like an attacker and connecting the dots no scanner can. My engagements combine both: broad automated coverage backed by focused, hands-on testing where it counts most, and every engagement concludes with a commercial-grade report: clear findings, risk ratings and remediation guidance your team can act on.

01

External Perimeter

Assessing internet-facing infrastructure and external network perimeters for exploitable weaknesses, including OSINT sweeps for credentials leaked on the dark web.

02

Internal Network

Simulating an attacker with internal access to uncover privilege escalation and lateral movement paths across services and configs.

03

Web & API

Validating vulnerabilities against the OWASP Testing Guide, from broken authentication to business logic flaws.

04

Mobile

Assessing mobile applications against the OWASP Mobile Top 10, from insecure storage to weak server-side controls.

05

OSINT

Mapping what's publicly discoverable about you, from exposed login credentials to other identifying details, before an attacker does.

[ 02 / 05 ] ~/creds/certifications.key

Certifications.

[ 03 / 05 ] ~/ctf/dossier.db

CTF.

Platforms

TryHackMe

TOP 1%
  • Rooms completed 306
  • Badges earned 33
  • Networks Wreath & Throwback

HackTheBox

PRODIGY · TOP 1%
  • System flags 107
  • User flags 110
  • Academy transcript
Tournaments
[ 04 / 05 ] ~/career/timeline.log

Career.

Experience
Feb 2025 - Present
Cyber Security Engineer / Penetration Tester
Blue Bridge
Nov 2024 - Jan 2026
Generative AI Researcher, CISO Operations
Vilnius University
Dec 2023 - Feb 2025
IT Technician / System Administrator
Vilnius University
Apr 2024 - Jul 2024
Cyber Security Laboratory Assistant
Vilnius University
Education
Sep 2023 - Jan 2027
BA, Information Systems & Cyber Security
Vilnius University
[ 05 / 05 ] ~/contact/init.sh

Let's talk.

Have a question, need consulting or pentesting services, or just want to talk security? Reach out. I read everything.