Python Software Engineer (Security Background)

  • | Full-time
  • | Bucharest, Romania
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Role overview

We are looking for a Python Software Engineer who lives at the intersection of production-ready code and offensive security. As a core member of the Tools team, you will be the primary subject matter expert for our scanner detectors, covering both Web-Recon (Website Scanner, API Scanner) and Network toolsets.

Your mission is to uncover the hidden attack surface of organizations by navigating both low-level network protocols and modern web complexity. You'll design scanning modules that handle firewalls and other internet quirks, coupled with the engineering discipline to ensure these tools scale across massive IP ranges reliably.

Experience requirements

  • Bachelor’s in Computer Science

  • Fluency in Python and Linux is required.

  • Experience building RESTful APIs using frameworks such as Django, FastAPI or django-ninja.

  • Handle research-to-implementation lifecycle for new detectors, ranging from raw TCP/IP-level probes to web vulnerabilities like CL.0 Request Smuggling and DOM XSS.

  • Proven ability to take a research concept or CVE and deliver production-ready detectors/modules.

  • Experience performing deep debugging of tools to fix memory leaks, race conditions and others.

  • Familiarity with Docker, Git, and K8s. You adhere to high code quality standards and unit testing practices.

  • Participation in CTFs/Bug Bounties is necessary, certifications like OSCP, OSWE, or equivalent certifications are a major plus.

Benefits

  • Deepen your expertise about the real world of IT Security, vulnerabilities, exploits, bug bounties, and much more

  • You'll leave your mark by helping us improve our leading penetration testing platform

  • Flexible hours

  • Study days

  • Paid certifications

  • Medical insurance

  • We are working in a hybrid way - 2 days / week in our cozy office located in the center of Bucharest (Crystal Tower). Self-determination is highly encouraged, both in IT security and programming.

Awards and recognition

Deloitte Fast 500 EMEA 2023 logo

Deloitte Fast 500 EMEA 2023

Based on revenue growth

Deloitte Fast 50 logo

Deloitte Fast 50 CE 2022

Companies to watch

SC Awards 2022 logo

SC Awards 2022

Best Vulnerability Management Solution (highly commended)

Achievements

  • More than 6 million vulnerability scans last year

  • Customers from 119 countries around the world

  • Dozens of CVEs discovered through original vulnerability research

  • Sponsors for almost a decade at DefCamp and DEF CON 2026 exhibitors

Join us

Please send your CV at careers@pentest-tools.com with your CV attached and we will get back to you as soon as possible.
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