Penetration Tester
Ethical hacker who finds vulnerabilities before attackers do.
Job titles
Penetration Tester, Ethical Hacker +
UK salary range
£45,000–£80,000
US salary range
$80,000–$130,000
Time to first role
1–3 years
About this role
A Penetration Tester, or ethical hacker, is a cybersecurity professional who simulates real-world attacks on systems, networks, and applications to identify security weaknesses before malicious actors can exploit them. This role involves planning and executing authorized attacks, documenting findings, and providing remediation guidance. Penetration testers are in high demand as organizations increasingly prioritize proactive security measures to protect sensitive data and comply with regulations like GDPR and PCI DSS. The role requires deep technical knowledge of operating systems, networking, web applications, and common attack vectors, combined with strong analytical and reporting skills. With the rise of cloud adoption and remote work, the need for skilled penetration testers continues to grow across finance, healthcare, government, and technology sectors.
Key skills employers look for
Certification roadmap
Foundation
Build core IT and security fundamentals
220-1201/220-1202CompTIA A+
Provides essential hardware, software, and troubleshooting knowledge needed to understand the systems you will test.
N10-009CompTIA Network+
Covers networking concepts, protocols, and infrastructure critical for understanding attack surfaces and network-based exploits.
SY0-701CompTIA Security+
Establishes core security principles, risk management, and cryptography foundations necessary for any penetration testing role.
Core Skills
Develop specialized offensive security knowledge
PT0-002CompTIA PenTest+
Directly covers penetration testing methodologies, tools, and reporting — the exact skills used daily in this role.
312-50Certified Ethical Hacker (CEH)
Teaches ethical hacking techniques, footprinting, scanning, and exploitation — widely recognized by employers for offensive roles.
CS0-002CompTIA CySA+
Focuses on threat detection and vulnerability management, complementing penetration testing with defensive analysis skills.
Advanced Specialisation
Master advanced exploitation and enterprise security
CAS-004CompTIA CASP+
Covers advanced security architecture, risk analysis, and enterprise-level penetration testing scenarios for senior roles.
CISSPCISSP
Validates deep security management and engineering knowledge, often required for lead penetration tester or consultant positions.
PCNSEPalo Alto Networks Certified Network Security Engineer
Demonstrates expertise in next-generation firewalls and network security, valuable for testing modern perimeter defenses.
Cloud & Specialised Environments
Expand into cloud and application security testing
SCS-C02AWS Certified Security – Specialty
Focuses on AWS-specific security controls, encryption, and incident response — essential for testing cloud-hosted environments.
AZ-500Microsoft Azure Security Engineer Associate
Covers Azure security services, identity management, and threat protection — key for penetration testing in Microsoft cloud environments.
CKSCertified Kubernetes Security Specialist
Validates Kubernetes security expertise, including cluster hardening and runtime security — increasingly needed for containerized app testing.
Frequently asked questions
What is the average salary for a Penetration Tester?
In the UK, penetration testers typically earn between £45,000 and £80,000 per year, depending on experience and certifications. In the US, salaries range from $80,000 to $130,000 annually, with senior roles exceeding $150,000.
Do I need a degree to become a Penetration Tester?
While a degree in cybersecurity, computer science, or IT can help, it is not strictly required. Many successful penetration testers start with CompTIA certifications (A+, Network+, Security+) and build hands-on lab experience through platforms like Hack The Box or TryHackMe.
How long does it take to become a Penetration Tester?
From zero experience, expect 1 to 3 years of dedicated study and practice. Starting with foundational certs (Security+, Network+), then moving to PenTest+ or CEH, combined with regular lab work, can lead to entry-level roles within 18–24 months.
What certifications are most valued by employers?
CompTIA PenTest+ and EC-Council CEH are the most commonly requested entry-level certs. For senior roles, CASP+, CISSP, and cloud-specific certs like AWS Security Specialty or AZ-500 add significant value. Hands-on experience is equally important.
What is the job outlook for Penetration Testers?
Demand is very high and growing, driven by increasing cyber threats and regulatory requirements. The UK and US both report skills shortages in offensive security, with job postings growing 30-40% year-over-year. Remote and hybrid roles are common.
Key terms for this career path
These concepts underpin the certifications in this roadmap and appear regularly in exam questions.
CPU Socket Types
A CPU socket type is the physical interface on a motherboard that determines which specific processor models can be installed.
Power Supply Units
A power supply unit (PSU) is the hardware component that converts electrical power from a wall outlet into the correct voltages needed to run all the internal components of a computer.
USB Standards
USB Standards define the rules for how devices connect and communicate through Universal Serial Bus ports, including data speed and power delivery.
Network Cabling Standards
Network cabling standards are the official rules and specifications that define how cables used to connect computers and network devices must be built, tested, and installed to ensure reliable communication.
NVMe Storage
NVMe storage is a fast type of solid-state drive that connects directly to a computer's processor using the PCI Express interface, allowing data to move much quicker than older storage technologies.
Motherboard Form Factors
A motherboard form factor is the standardized physical size, shape, mounting hole layout, and connector arrangement that determines what case and power supply a motherboard fits into.