Offensive Security Lead Expert

Ernst & Young Advisory Services Sdn Bhd; Katowice; Hybrid; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Continuous learning

Diverse and inclusive culture

Global opportunities

Job summary

EY GDS Poland is seeking an Offensive Security Lead Expert to guide a small team in delivering Attack & Penetration Testing and other security projects. You will perform hands-on testing, analyze findings, and produce detailed reports for multinational clients.

Ideal candidates bring 4+ years in security testing, strong technical knowledge, and IT consultancy skills. English fluency is essential; German or other European languages are advantageous.

Qualifications

• 4+ years of experience in Dev / ITSec conducting penetration tests projects.
• Knowledge of security issues at the technical level.
• Knowledge of solutions and recommendations to prevent or mitigate security vulnerabilities.
• Knowledge of the application security verification standards.
• OSCP, OSWE, GPEN certificate or similar.
• Excellent command of English language.

Responsibilities

• As an Offensive Security Lead Expert, you’ll contribute technically to Cybersecurity client projects and internal projects. The role involves hands-on testing, analysis, and reporting.
• You’ll guide a small team of professionals to deliver Attack & Penetration Testing projects and various other security projects including application code review, social engineering, Red Team Assessments, Threat Modelling, Security Architecture reviews.

Skills

Penetration testing

Red Team methodologies

Security architecture

Threat modelling

English proficiency

Mentoring / leadership

Consulting skills

Python

C++

C#

Java

Education

OSCP/OSWE/GPEN certificates or equivalent

Tools

Python

C++

C#

Java

Job description

Location: Katowice - 2 days office / 3 days remote

Let us introduce you the job offer by EY GDS Poland – a member of the global integrated service delivery center network by EY.

The opportunity

You will work in multinational environment together with other top security experts and your responsibility will be to guide a small team of professionals to deliver Attack & Penetration Testing projects and various other security projects including application code review, social engineering, Red Team Assessments, Threat Modelling, Security Architecture reviews.

Your key responsibilities

As an Offensive Security Lead Expert, you’ll contribute technically to Cybersecurity client projects and internal projects. The role involves hands‑on testing, analysis, and reporting.

Skills and attributes for success

• Understanding of common attack paths and security weaknesses across web and mobile applications, infrastructure, and cloud environments with the ability to translate findings into business-relevant risks and actionable remediation steps
• Structured and disciplined work style, including thorough documentation, evidence handling, clear communication, and a strong focus on quality

To qualify for the role, you must have

• 4+ years of experience in Dev / ITSec conducting penetration tests projects,
• Knowledge of security issues at the technical level,
• Knowledge of solutions and recommendations to prevent or mitigate security vulnerabilities,
• Knowledge of the application security verification standards,

Deep understanding of how information’s technology systems work:

• networking architecture,
• networking protocols,
• operating systems.
• Deep understanding of how web applications work, starting from backend, ending with frontend,
• Deep understanding of OWASP Top10 concepts,
• Familiarity of Red Team methodologies (MITRE, Social engineering, OSINT etc.),
• Consulting and communication skills to provide technical security expertise understandable by non-technical audience,
• OSCP, OSWE, GPEN certificate or similar,
• Excellent command of English language. German or other European language would be an advantage but not mandatory.

Ideally, you’ll also have

• Documented participation in Bug Bounty programs or acknowledgement of Responsible Disclosures outside those programs,
• Granted CVEs,
• Programming language skills (Python, C++, C# or Java).
• Experience to manage small teams

What we look for

We are looking for candidates who combine deep technical expertise with Customer facing approach. Hands on Person, who can mentor professionals, and drive sustainable growth of Cybersecurity practice.

What we offer

EY Global Delivery Services (GDS) is a dynamic and truly global delivery network. We work across nine locations – Argentina, Hungary, India, the Philippines, Poland, Sri Lanka, Mexico, Spain and the United Kingdom – and with teams from all EY service lines, geographies and sectors, playing a vital role in the delivery of the EY growth strategy. From accountants to coders to advisory consultants, we offer a wide variety of fulfilling career opportunities that span all business disciplines. In GDS, you will collaborate with EY teams on exciting projects and work with well-known brands from across the globe. We’ll introduce you to an ever-expanding ecosystem of people, learning, skills and insights that will stay with you throughout your career.

• Continuous learning: You’ll develop the mindset and skills to navigate whatever comes next.
• Success as defined by you: We’ll provide the tools and flexibility, so you can make a meaningful impact, your way.
• Transformative leadership: We’ll give you the insights, coaching and confidence to be the leader the world needs.
• Diverse and inclusive culture:You’ll be embraced for who you are and empowered to use your voice to help others find theirs.

About EY

EY | Building a better working world

EY exists to build a better working world, helping to create long-term value for clients, people and society and build trust in the capital markets.

Enabled by data and technology, diverse EY teams in over 150 countries provide trust through assurance and help clients grow, transform and operate.

Working across assurance, consulting, law, strategy, tax and transactions, EY teams ask better questions to find new answers for the complex issues facing our world today.

The exceptional EY experience. It’s yours to build.

In compliance with the requirements of the Whistleblower Protection Act, our company has established the Procedure for reporting breaches of law and undertaking appropriate follow-up actions. Any misconduct should be reported through the EY Ethics Hotline.