Penetration Tester (Mid/Senior Level), Sofia

Penetration Tester (Mid/Senior Level)

Posting Date: 8 Oct 2026

Location: Sofia, BG

Company: EBRD

Are you a cyber expert with a passion for finding the cracks before the threat actors do? We’re searching for an Offensive Security Expert to join the front lines of our cyber defence. You’ll lead offensive security operations, scanning systems, probing weaknesses, and simulating real-world attacks using standard offensive tooling. From validating vulnerabilities through hands-on exploitation to crafting custom scripts that expose hidden threats, your work will drive critical security insights and real-time risk reduction.

This role is built for someone with deep technical expertise and an hacker mindset, fluent in web technologies and the inner workings of modern attack vectors. You’ll also dive into threat intelligence, develop hypotheses, and contribute to smarter detection strategies. If you’re driven to outsmart adversaries, influence real-world defence strategies, and play an key role in proactive security, your next mission starts here.

Accountabilities & Responsibilities

• Plans, develops and executes vulnerability scans of organization information systems
• Perform penetration tests on variety of assets. (web, mobile, network)
• Identifies and resolves false positive findings in assessment results
• Performs reconnaissance and information collection on the target environment or attack surface
• Identifies potential weaknesses and vulnerabilities on assets (i.e., endpoints, applications, users)
• Validates weaknesses via exploitation, and reports their findings
• Recommends security controls and/or corrective actions for mitigating technical and business risk
• Creates hypotheses for analytics and testing of threat data
• Analyses data from threat and vulnerability feeds and analyses data for applicability to the organisation
• Generates reports on assessment findings and summarises to facilitate remediation tasks
• Shares lessons learned, initial indicators of detection and opportunities for strengthening signature-based detection capabilities

Knowledge, Skills, Experience & Qualifications

• Highest level of technical expertise in cybersecurity, including deep familiarity with relevant penetration and intrusion techniques and attack vectors
• Strong understanding of web technologies
• Solid grasp of core security fundamentals and concepts
• Knowledge of offensive tools such
• Proficient at creating their own exploits in their preferred language
• Technical knowledge in system security vulnerabilities and remediation techniques, network and web-related protocols.
• Technical knowledge in security engineering, system and network security, authentication and security protocols
• The following certifications desired but not essential: OSCP, OSEP, OSWE, CPTS, CWEE, CWES, CAPE

What is it like to work at the EBRD? / About EBRD

Our agile and innovative approach is what makes life at the EBRD a unique experience! You will be part of a pioneering and diverse international organisation, and use your talents to make a real difference to people's lives and help shape the future of the regions we invest in.

At EBRD, our Values – Inclusiveness, Innovation, Trust, and Responsibility – are at the heart of how we work. We bring these to life through our Workplace Behaviours: listening well and speaking up, collaborating smartly, acting decisively with full commitment, and simplifying to amplify our impact. These principles shape our culture and define our success. We seek individuals who not only share these values but are also committed to embedding them in their daily work, fostering a positive and high-performing environment.

The EBRD environment provides you with:

• Varied, stimulating and engaging work that gives you an opportunity to interact with a wide range of experts in the financial, political, public and private sectors across the regions we invest in.
• A working culture that embraces inclusion and celebrates diversity. Our workforce reflects a broad range of backgrounds, perspectives, and experiences, bringing fresh ideas, energy, and innovation and enhancing our ability to serve our clients, shareholders, and counterparties effectively.
• We offer hybrid and flexible working arrangements and believe we operate at our best when collaborating 3 days a week in person (minimum).
• An environment that places sustainability, equality and digital transformation at the heart of what we do.
• A workplace that prioritises employee wellbeing and provides a comprehensive suite of competitive benefits.

Diversity is one of the Bank’s core values which are at the heart of everything it does. As such, the EBRD seeks to ensure that everyone is treated with respect and given equal opportunities and works in an inclusive environment. The EBRD encourages all qualified candidates who are nationals of the EBRD member countries to apply regardless of their racial, ethnic, religious and cultural background, gender, gender identity, sexual orientation, age, socio-economic background or disability.

Please note, that due to the high volume of applications received, we regret to inform you that we are unable to provide detailed feedback to candidates who have not been shortlisted (for further consideration).