# Penetration Tester

> TwelveSec · Chalandri, Greece (Hybrid) · Full-time · Posted 2026-07-15

**Workplace:** hybrid

**Department:** Operations

## Description

Join the TwelveSec team!

We’re a Cybersecurity firm, specializing in penetration testing, assurance and security management consulting and we’re looking for a mid-senior level Penetration Tester to join us. We offer a top-market salary, a supportive work environment, flexible hours, and remote work options with only four required in-office days per month.

We’re looking for someone with a strong technical background and good knowledge of security management and governance principles. You should have at least 4 years of working experience as a Penetration Tester and ideally a relevant academic qualification (e.g. a Master’s degree on Information Security or related field). If you want to intrigue us, let us know if you’ve been involved in OSS projects and/or security community initiatives.

You must be an EU citizen or be eligible to work within the EU.

## Requirements

We’ll expect you to demonstrate a good understanding and previous experience of at least 4 years in the following engagement types (professional references from past employers are welcome):

-   Web App Penetration Testing
-   Network and System (Infrastructure) Penetration Testing
-   Android and iOS Penetration Testing

### Nice-to-have (Not obligatory):

Ideally, you should also be competent in some of the following:

-   Firmware Analysis and Reverse Engineering
-   Knowledge of Hardware Protocols (UART/I2C/SPI/JTAG/SWD)

### Certifications (Not obligatory):

The following professional certifications will put your CV to the top of our “to call” list (with order of importance):

-   OSCP
-   OSWE
-   OSEP
-   TCM Practical IoT Penetration Tester

## Benefits

Here are some of the benefits of joining the TwelveSec team:

-   Gross monthly salary (14 payments/year): €2,200–€3,200 depending on qualifications and experience.
-   Work in a friendly environment, with good team chemistry
-   Work from home and have flexible hours
-   Get involved in the growth of a new company with more promotion opportunities
-   Gain experience with new types of projects and international trips
-   Improve your CV by getting security certifications with our support

## Apply

[Apply at TwelveSec](https://apply.workable.com/twelvesec/j/288A6CD742/apply)

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