26 to 50 of 66 Penetration Tester Jobs

based decisions to improve overall security posture. What You'll Do Working independently and collaboratively with a team to both lead and support Perform penetration testing on applications with complex technology stacks from both a: Blackbox perspective & Whitebox perspective Dynamically flex your skills when assessing emerging or custom technologies … management, sales and other delivery team members to drive customer satisfaction and meet project deliverables Travel up to 10% What You'll Bring Application penetration testing and assessment tradecraft and methodologies (including browser-based, API) Strong working knowledge of at least two programming or scripting languages Strong understanding of … a consulting/professional services role Minimum of 5 years' experience in Application Security and/or Software Development Expert proficiency in Web Application Penetration Testing Excellent overall technical skills, with strong expertise in at least one of the following: Mobile Application Penetration Testing Thick Application Penetration More ❯

At Vertical Structure (an Instil Company), we specialise in providing human-focused security and penetration testing services for web applications, cloud infrastructure and mobile applications. The Role We are looking for a Mid/Senior Penetration Tester to join our dynamic team based in Belfast. As a … Pen Tester, you will be part of the delivery team, conducting penetration tests and vulnerability assessments across a range of technologies and a wide range of customers including software, fintech, manufacturing, engineering, legal, and public sector. Your insights will be crucial in identifying security weaknesses and helping clients … Work Scheme Day to Day Probe & exploit security vulnerabilities in client's Infrastructure/cloud, Web Applications and Mobile Applications using a variety of penetration tests. Write detailed reports outlining vulnerabilities and providing actionable recommendations. Collaborate with clients during kick-off and discovery sessions, providing expert advice. Stay current More ❯

At Vertical Structure (an Instil Company), we specialise in providing human-focused security and penetration testing services for web applications, cloud infrastructure and mobile applications. The Role We are looking for a Penetration Tester to join our dynamic team based in Belfast. As a Pen Tester, you will be part of the delivery team, conducting penetration tests and vulnerability assessments across a range of technologies and a wide range of customers including software, fintech, manufacturing, engineering, legal, and public sector. Your insights will be crucial in identifying security weaknesses and helping clients fortify their … Work Scheme Day to Day Probe & exploit security vulnerabilities in client's Infrastructure/cloud, Web Applications and Mobile Applications using a variety of penetration tests. Write detailed reports outlining vulnerabilities and providing actionable recommendations. Collaborate with clients during kick-off and discovery sessions, providing expert advice. Stay current More ❯

OVERVIEW As a Penetration Tester, you will perform formal and comprehensive penetration testing assessments, including producing full written reports to appropriate standards and within agreed deadlines. In addition, you will support with client pre-engagement activities, including scoping and proposal drafting, as well as researching new vulnerabilities … and technologies, following responsible disclosure, and sharing such findings within the team. RESPONSIBILITIES • Perform formal and comprehensive application and other penetration testing assessments where appropriate and required; • Provide well-written, concise, technical and non-technical reports in English; • Perform vulnerability/attack surface assessments and provide findings with remediation … actions; • Support with various client pre-engagement interactions, including scoping activities and proposal drafting; • Manage and deliver penetration testing project activities within strict deadlines; • Research new technologies, security topics and vulnerabilities within the wider team to identify new vulnerabilities and follow responsible disclosure; • Coach and mentor Graduate and Junior More ❯

Penetration Tester Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: None The Opportunity: Perform computer network evaluations to include penetration security assessments in a cybersecurity red team … Programming is a plus. Existing Subject Matter Expert of Advanced Persistent Threats and Emerging Threats. Proactive interest in emerging technologies and techniques related to penetration testing. Demonstrated real world experience performing grey and black box penetration testing. Have an understanding of and interest in common web application vulnerabilities …/IP, virtualization and cloud/data center architecture. Strong familiarity with some of the following: OWASP top 10, DoD and NSA Vulnerability and Penetration Testing Standards. Knowledge of exploitation concepts including phishing and social engineering tactics, buffer overflows, fuzzing, SQLi, MiTM, covert channels, secure tunneling and open source More ❯

Pentest People is a UK-based security consultancy specialising in providing Penetration Testing as a Service to all its clients. Our innovative approach to security testing merges the benefits of consultant-led penetration testing with ongoing vulnerability assurance through our advanced SecurePortal. This provides clients with a continuous … living threat management system throughout the duration of the contract, rather than a single point-in-time assessment. As a Penetration Tester specialising in Infrastructure testing or Web Apps, you will conduct thorough and formal penetration testing assessments, delivering detailed written reports that meet industry standards and … We're hiring testers of all experience levels, come grow with us! Key responsibilities include: Conduct formal and comprehensive pentests and, where necessary, other penetration testing assessments. Deliver clear, well-structured technical and non-technical reports in English. Perform vulnerability assessments and provide detailed findings along with recommended remediation More ❯

is contingent upon funding with an expected start date of December 2025 Top Secret/SCI Clearance required SRG is seeking a Red Team Penetration Tester III, you will be responsible for leading and executing complex penetration testing events and conducting offensive cybersecurity operations for the U.S. … OSCE), or Offensive Security Exploitation Expert (OSEE), or Offensive Security Wireless Professional (OSWP) certification. Experience: • Seven (7) years of full-time professional experience conducting penetration testing or offensive Cyber operations in the following areas: o Developing and utilizing penetration tools such as Metasploit, NMAP, Kali Linux, Cobalt Strike. … Network Professional (CCNP) certification CCIE (Cisco Certified Internetwork Expert) CISSP (Certified Information Systems Security Professional) Seven (7) years of full-time professional experience conducting penetration testing or offensive Cyber operations in each of the following areas: Developing and utilizing penetration tools such as Metasploit, NMAP, Kali Linux, Cobalt More ❯

customers. Visit to learn how we're keeping people around the world safe and secure. Program Overview About The Role Peraton seeks a Cyber Penetration Tester Job Responsibilities: Performs complex penetration testing services for a wide variety of systems, devices, networks, and applications to identify exploitable vulnerabilities. … Conducts continuous penetration testing of the enterprise. Assesses the effectiveness of security controls implemented to protect systems in support of the Authorization Process, security impact analysis, through change management and as required. Mimics attacks of threat actors, performs ad-hoc and focused penetration tests for any internal or … public websites associated with systems. Develops and executes plans that include penetration testing of IT systems. Validates remediations, develops quarterly, annual and ad-hoc penetration testing schedules. Provides detailed and comprehensive results of information gathered, tactical recommendations, strategic recommendations, and verifies remediation. Qualifications 5 years with BS/ More ❯

Since being acquired by Nomios in late 2024, Dionach by Nomios has continued its dynamic growth as a leading information security company. Specializing in penetration testing and information assurance services, we offer an incredible opportunity to be part of an experienced team, build your skills, and grow professionally. Dionach … If you require accommodations during the application process, let us know, and we'll work to meet your needs. What You'll Do Lead penetration testing teams to conduct penetration tests across various environments, including web applications, APIs, Cloud, and network infrastructure. Lead on-site customer engagements. Lead … years leading network, web, and internal penetrations tests as well as experience in leading customer engagements onsite. Leadership : Experience of supervising and mentoring penetration test teams. Training Experience : Ownership and leadership on developing and providing training courses. Tools : Proficiency with tools like Burpsuite Pro, Nessus, and other industry standards. More ❯

Since being acquired by Nomios in late 2024, Dionach by Nomios has continued its dynamic growth as a leading information security company. Specializing in penetration testing and information assurance services, we offer an incredible opportunity to be part of an experienced team, build your skills, and grow professionally. Dionach … If you require accommodations during the application process, let us know, and we'll work to meet your needs. What You'll Do Lead penetration testing teams to conduct penetration tests across various environments, including web applications, APIs, Cloud, and network infrastructure. Lead on-site customer engagements. Lead … years leading network, web, and internal penetrations tests as well as experience in leading customer engagements onsite. Leadership : Experience of supervising and mentoring penetration test teams. Training Experience : Ownership and leadership on developing and providing training courses. Tools : Proficiency with tools like Burpsuite Pro, Nessus, and other industry standards. More ❯

Since being acquired by Nomios in late 2024, Dionach by Nomios has continued its dynamic growth as a leading information security company. Specializing in penetration testing and information assurance services, we offer an incredible opportunity to be part of an experienced team, build your skills, and grow professionally. Dionach … If you require accommodations during the application process, let us know, and we'll work to meet your needs. What You'll Do Lead penetration testing teams to conduct penetration tests across various environments, including web applications, APIs, Cloud, and network infrastructure. Lead on-site customer engagements. Lead … years leading network, web, and internal penetrations tests as well as experience in leading customer engagements onsite. Leadership : Experience of supervising and mentoring penetration test teams. Training Experience : Ownership and leadership on developing and providing training courses. Tools : Proficiency with tools like Burpsuite Pro, Nessus, and other industry standards. More ❯

is contingent upon funding with an expected start date of December 2025 Top Secret/SCI Clerance required SRG is seeking a Red Team Penetration Tester IV, you will be responsible for leading and executing complex penetration testing events and conducting offensive cybersecurity operations for the U.S. … Expert (OSCE), Offensive Security Exploitation Expert (OSEE), or Offensive Security Wireless Professional (OSWP) certification. Experience: • Ten (10) years of full-time professional experience conducting penetration testing or offensive Cyber operations including demonstrated experience in the following areas: o Developing and utilizing penetration tools such as Metasploit, NMAP, Kali … Network Professional (CCNP) certification CCIE (Cisco Certified Internetwork Expert) CISSP (Certified Information Systems Security Professional) Seven (7) years of full-time professional experience conducting penetration testing or offensive Cyber operations in each of the following areas: Developing and utilizing penetration tools such as Metasploit, NMAP, Kali Linux, Cobalt More ❯

Join ARHS Group, part of Accenture, as a Senior Penetration Tester/Security Engineer (m/f), and bring your security expertise to projects that are shaping the digital future of Europe. If you're passionate about application security, comfortable with tools like Burp Suite, Nmap, Metasploit, or … to high-impact projects for major European institutions, all while working in a dynamic and innovation-driven environment. THE WORK : Perform automated and manual penetration testing on web and mobile applications, as well as on cloud and on-premise infrastructures. Identify and help mitigate vulnerabilities, proposing secure architecture improvements … software development lifecycle (DevSecOps). Work closely with customers to understand their security needs and ensure those are effectively met. Analyse and enhance current penetration testing methodologies. Write and present concise, technical, and actionable reports. Contribute to internal knowledge sharing and continuous team development. Act as a security advocate More ❯

Cyber Security Engineer (Penetration Tester) Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: Secret Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Continental US The Opportunity: CACI seeks a motivated, mid-level Cyber Security Engineer to support the … search of vulnerabilities and identify mitigations. Conduct vulnerability assessments on web applications, networked devices, standalone software products, and other technologies as assigned using the penetration testing life cycle . Maintain test efficacy by identifying and applying new testing tools and techniques. Conduct research and development efforts to explore current … Telework is not available. DoD 8570 IAT Level II certification (Security+ or equivalent). Must have 5+ years of experience with offensive security/penetration testing tools and methodologies to assess technologies for vulnerabilities and exploits at the network and application levels. Intermediate knowledge of Linux and Windows internals. More ❯

ReRoot Cyber is seeking a highly skilled and forward-thinking senior penetration tester to join one of the UK’s most respected testing teams. They are an impressive technical team with a genuinely collaborative culture who have the full backing from management to deliver nothing but value adding … service lines. If you thrive on bringing ideas to life, creating bespoke tools and adding true value to your clients, then this is the penetration testing team for you. This is a home based position with very very very limited travel. Full right to work in the UK is … required What you'll do: Deliver advanced penetration tests across varying environments (web app, inf, cloud) Play a key role in new and existing service line development. Collaborate with a team of brilliant minds to contribute to in-house testing methodologies. Stay ahead of emerging threats and continuously sharpen More ❯

Responsibilities & Qualifications RESPONSIBILITIES Lead and execute complex Red Team penetration tests and cyber adversary emulation operations. Design, develop, and employ offensive tools using platforms such as Metasploit, NMAP, Kali Linux, and Cobalt Strike. Emulate threat actor TTPs based on MITRE ATT&CK, APT profiles, and emerging threat intelligence. Conduct … to document findings and support remediation strategies. REQUIRED QUALIFICATIONS Experience: Minimum of 10 years of full-time professional experience in Red Team operations and penetration testing, including: Developing and leveraging offensive tools such as Metasploit, NMAP, Kali Linux, and Cobalt Strike. Simulating adversary behavior and TTPs. Operating across Linux … Must possess a TS/SCI clearance (IT Level I Tier 5/Special-Sensitive Position) Overview Overview We are seeking a Red Team Penetration Tester IV to join our team supporting Department of Navy. T ekSynap is a fast-growing high-tech company that understands both the More ❯

Responsibilities & Qualifications RESPONSIBILITIES Plan, execute, and document full-scope penetration tests and adversary emulation exercises. Develop, modify, and utilize offensive security tools such as Metasploit, NMAP, Kali Linux, and Cobalt Strike. Mimic threat actor behavior using TTPs aligned with frameworks like MITRE ATT&CK. Conduct assessments across multiple operating … personnel to enhance overall cyber posture. REQUIRED QUALIFICATIONS Experience: Minimum of 7 years of full-time professional experience in each of the following: Conducting penetration testing or offensive cyber operations. Developing and using tools such as Metasploit, NMAP, Kali Linux, and Cobalt Strike. Mimicking threat behavior and adversary simulation. … Clearance: Must possess a TS/SCI clearance (IT Level I Tier 5/Special-Sensitive Position) Overview We are seeking a Red Team Penetration Tester III to join our team supporting Department of Navy. T ekSynap is a fast-growing high-tech company that understands both the More ❯

in the testing phase of security controls assessments using specialized knowledge of network protocols, operating systems, architectures, equipment, services, and standards. Perform vulnerability and penetration testing using a wide variety of tools Research and evaluate emerging technologies relevant to information systems security; interpret agency specific and federal security regulations … Perform both network and application-level testing using established testing protocols and methods Qualifications: Eight (8) experience of related work experience as a Penetration Tester performing both network and application-level testing using established test protocols and methods. A Bachelor's degree in Computer Science or a related … Forensics, Cybersecurity, Information Technology, Information Assurance, Information Security, and Information Systems). In lieu of a Bachelor's degree, four (4) additional years of Penetration Testing experience maybe substituted. Requirements: U.S. Citizenship is required for all applicants. CTP is an equal opportunity employer and abides by applicable employment laws More ❯

Cyber Monitoring and Operations, Cyber Threat and Investigations, and Technology Innovation and Engineering State. About The Role Peraton is currently seeking a Jr Cyber Penetration Tester to become part of our Department of State (DoS) Diplomatic Security Cyber Mission (DSCM) program providing leading cyber and technology security experience … all while identifying and responding to cyber risks and threats. Location: Arlington, VA; On-site full-time. In this role, you will: Support the Penetration Testing (Red Cell) Team. Assess the current state of the customer's system security by identifying all vulnerabilities and security measures. Help customer perform … analysis and mitigation of security vulnerabilities. Perform and report on penetration testing of systems, including cloud, to satisfy the NIST 800-53 CA-8 security control and using methodologies that may include, NIST SP 800-115, Penetration Testing Execution Standard (PTES), and Information Systems Security Assessment Framework (ISSAF More ❯

Gray Tier Technologies is seeking a Penetration Tester with Cloud experience to support our customer in Ashburn VA. The Department of Homeland Security (DHS), Customs and Border Protection (CBP) Security Operations Center (SOC) is a US Government program responsible to prevent, identify, contain and eradicate cyber threats to More ❯

Task Force Talent is seeking a Penetration Tester with an active TS/SCI FSP security clearance. Target salary range is 100k - 210k, depending on experience level. Our client for this role is a small company with very unique experience and expertise in cybersecurity and related areas. Candidates …/SCI FSP security clearance. (Sorry, we are unable to sponsor or upgrade clearance s for this role.) Experience with: Grey and black box penetration testing and system exploitation against desktops, servers, applications, operating systems, and security systems to gain root and administrator access Performing reconnaissance, privilege escalation persistence More ❯

for doing what's right, what's smart, and what works. About the Role Redhorse transforms how government uses data and technology. As a Penetration Tester, you'll play a critical role in ensuring the security and resilience of our systems and those of our government clients. You … commitment to delivering secure and reliable solutions. This is an opportunity to make a tangible difference in a high-impact environment. Key Responsibilities Conduct penetration testing of various systems, including enterprise systems and hypervisors. Apply computer attack methods and system exploitation techniques to identify vulnerabilities. Analyze network architectures and … as needed). Required Experience/Clearance: 5-7 years of demonstrated experience in cybersecurity or a related IT field. Demonstrated experience in cyber penetration testing. Demonstrated working knowledge of cybersecurity principles for Linux and Windows platforms, and virtual environments. Demonstrated experience performing network security analysis. Bachelor's degree More ❯

Job Summary: Kavaliro is seeking a skilled and motivated Application Penetration Tester II to join our clients onsite premise in Washington If you have at least five years of experience in application security testing, excellent communication skills, and a creative, solutions-dr More ❯

My Client is a cybersecurity company who offer security services to multiple businesses across varying industries. They are now looking for a graduate Penetration Tester to join their growing team! Main Duties: Vulnerability Identification: Conduct thorough assessments to identify security vulnerabilities in networks, applications, and systems. Exploitation and More ❯

My Client is a cybersecurity company who offer security services to multiple businesses across varying industries. They are now looking for a graduate Penetration Tester to join their growing team! Main Duties: Vulnerability Identification: Conduct thorough assessments to identify security vulnerabilities in networks, applications, and systems. Exploitation and More ❯