16 of 16 Penetration Testing Jobs in Slough

the client’s advocate for cybersecurity best practices and will provide recommendations in this domain. Your Impact Conducts periodic scans of networks to find and detect vulnerabilities Performs client penetration testing to find any vulnerabilities or weaknesses that might be exploited by a malicious party, using open-source, custom, and commercial testing tools Ability to assist in … scoping engagements by clearly articulating various penetration approaches and methodologies to audiences ranging from highly technical to executive personnel Report generation that clearly communicates testing and assessment details, results, and remediation recommendations to clients Develop scripts, tools, and methodologies to automate and streamline internal processes and engagements Conducts IT application testing, cybersecurity tool and systems analysis, system … and network administration, and systems engineering support for the sustainment of information technology systems (mobile application testing, penetration testing, application, security, and hardware testing) Conduct threat hunting and/or compromise assessment engagements to identify active or dormant indicators of compromise (IoCs) using Crypsis and Palo Alto Networks’ threat hunting tools (and/or client owned More ❯

Penetration Tester Permanent – up to £85k per annum London based – hybrid working – 2-3 days office based Must have CHECK CTL and certified Role Overview: We are seeking a highly skilled and experienced Offensive Security Consultant with a strong focus understanding on threat intelligence and attack methods. The ideal candidate will be responsible for managing and conducting advanced penetration testing engagements, leveraging threat intelligence to simulate real-world attacks across a variety of environments, including OT, IT, web applications, cloud infrastructure, and APIs. This role requires a deep understanding of adversarial approaches, excellent communication skills, and the ability to provide strategic and actionable recommendations to significantly enhance our clients' security posture. Responsibilities: Lead and manage the full … lifecycle of complex penetration testing engagements, applying a strong threat intelligence-led approach. Execute advanced penetration tests across a broad range of environments (applications, infrastructure, web, APIs, O365, Azure, AWS, OT), directly applying your knowledge of current threat landscapes and attacker TTPs. Develop and maintain sophisticated test plans, execution plans, and targeted use cases directly informed by More ❯

Network Security Engineer Network Security/Penetration Testing/CREST/CSTL/API Testing/Config Reviews/Infrastructure/Outside IR35/West London We’re seeking an experienced Network Security Engineer to support a major multi-phase security testing project. You’ll conduct penetration tests, configuration reviews, and infrastructure assessments, contributing to … a high-profile programme of work extending into next year. Required Strong background in network and infrastructure security. Experience performing penetration testing, configuration reviews, and API testing. Knowledge of “classic” CHECK-style testing methodologies. CREST, CSTL or CTL certification (Team Member or Team Leader level). Ability to deliver high-quality reports and communicate technical findings clearly. … Hands-on experience across infrastructure, networking, and external testing. Desirable Experience working within CHECK or other accredited testing schemes. Strong understanding of secure network architecture and hardening practices. Previous consultancy or project-based testing experience. Contract Details Outside IR35 West London (on-site presence required for majority of testing) 0-hours contract – project-based work, phase by More ❯

analyse the global threat landscape to identify emerging risks, adversary tactics, and trends relevant to the organization's business and technology environment Collaborate with Red Team, Blue Team, and Penetration Testing teams to integrate threat intelligence into testing scenarios using Breach & Attack Simulation (BAS) platforms and enhance defensive strategies Act as a liaison between threat intelligence and … intelligence and offensive security operations Ad hoc requests from your line manager Cyber Security Analyst Ideal Candidate: At least 5 years of experience in threat intelligence, cybersecurity operations, or penetration testing Ability to collaborate across technical teams, including Red/Blue teams and SOC Familiarity with threat intelligence platforms (TIPs), SIEMs, and threat data enrichment tools Experience using … Breach and Attack Simulation (BAS) platforms Strong understanding of adversary tactics, techniques, and procedures (TTPs), MITRE ATT&CK framework, and threat modelling Hands-on experience with penetration testing tools such as Metasploit Framework, Burp Suite, Kali Linux, and Pentera Experience producing threat reports and briefings Business level fluency in English Japanese, Cantonese, Mandarin language would be advantageous due More ❯

Infrastructure Penetration Tester | CHECK | CREST | CSTL/CTL | Networking | Config Reviews | API Testing | Contract Pen Testing | Infrastructure | External & Internal Networks | SR2 is partnered with a leading security consultancy on a significant multi-phase testing programme, and we’re looking for an experienced Infrastructure Penetration Tester to join the team. This role will focus on delivering … hands-on penetration testing across external and internal networks, reviewing system configurations, and identifying vulnerabilities within critical infrastructure. You’ll work alongside a small team of experienced testers to support a major client undergoing large-scale change, ensuring their environment is secure and compliant. Key Responsibilities: Conduct comprehensive external and internal infrastructure penetration tests , starting with perimeter … systems and moving into internal networks Perform configuration reviews across servers, firewalls, routers, and network devices Execute API security testing to assess authentication, data access, and integration risks Deliver “old-school” CHECK-style network and infrastructure testing in line with industry standards Produce detailed technical reports outlining vulnerabilities, exploitation paths, and remediation guidance Collaborate with the project lead More ❯

and intrusion prevention configurations to maintain secure network boundaries Support certificate and key management following encryption and PKI best practices Vulnerability, Threat, and Risk Management Automate vulnerability scanning and penetration testing using tools (Qualys, Nessus, OpenVAS) and custom scripts Coordinate third-party penetration tests and track remediation actions Conduct ongoing threat modelling, patch management, and risk assessments More ❯

development of cyber security strategies and roadmaps Technical proficiency in a wide range of cyber risk management services, including cyber threat, risk and control assessments, secure software development practices, penetration testing, vulnerability assessments, among others Sound knowledge of applicable laws, compliance regulations, and industry standards as it relates to privacy, security, and compliance Sound knowledge of applicable frameworks More ❯

Lead or support incident response activities: investigation, containment, eradication, recovery, and reporting. Conduct root cause analysis and implement security hardening improvements. Vulnerability & Risk Management Run regular vulnerability scans and penetration testing activities; track remediation of findings. Evaluate risks and recommend security enhancements or compensating controls. Maintain asset inventories and ensure patching and configuration baselines are followed. Security Governance More ❯

Senior Penetration Tester -£300,000+ Total Package (£150,000 - £200,000 fixed) + Sign On + Bonus Entasis Partners are proud to be exclusively supporting a global organisation at the forefront of innovation in financial systems and high-performance computing. This is not your average security role. Our partner operates in a deeply technical, high-trust environment where the … of internal talent make for an exceptionally challenging and rewarding opportunity. With a newly developed central London site focused on next-generation research, this firm is seeking a Senior Penetration Tester to strengthen its already world-class internal security capability. The Opportunity This is a hands-on, highly autonomous role embedded within a specialist cyber function. You’ll be … trusted to scope, execute, and deliver sophisticated penetration tests and control assessments across a range of technologies including Kubernetes, Jenkins, and Windows-based infrastructure. More than just finding issues, you’ll work in partnership with teams across the business to advise, remediate, and embed meaningful improvements. The environment is agile, collaborative, and engineered for depth not red tape. What More ❯

and endpoint security platforms to the level of administration and deployment. Exposure to SOAR tools, observability tools and data stream processing tools Hands-on experience with vulnerability assessment tools, penetration testing methodologies and forensic analysis techniques. Experience in writing content/polices for monitoring in line with MITRE ATT&CK framework Familiarity with regulatory requirements such as GDPR More ❯

DeFi Security Engineer for their London office. This role focuses on supporting the security of their Crypto trading infrastructure and OTC platform Responsibilities: Conduct vulnerability assessments, threat modeling, and penetration testing across infrastructure, smart contracts, and OTC-specific components Lead system hardening, network segmentation, identity management, and rapid incident response for DeFi and OTC environments Investigate security incidents More ❯

Engineer will have first-class scoping and planning skills. The IT Project Engineer will host security consultations and conduct vulnerability assessments. The IT Project Engineer will oversee and direct Penetration Testing exercises. The IT Project Engineer will be familiar with Cyber Essentials, Microsoft Copilot and PCI-DSS. The IT Project Engineer will be network-savvy. Think firewalls, switches More ❯

Internal Penetration Tester - Hybrid in London - Inside IR35 - 6 months We are seeking an experienced Internal Pentester to join an international client secure their networks. This critical role, based in London (2-3 days per week), requires deep expertise in conducting manual and automated security assessments across networks, applications, cloud platforms, and infrastructure. You will identify and exploit vulnerabilities … simulate real-world attacks, and deliver actionable remediation guidance to strengthen defenses. Key Responsibilities: Plan and execute penetration tests - perform manual and automated testing across applications, APIs, internal/external networks, cloud environments, and Active Directory. Identify, exploit, and validate vulnerabilities - uncover security flaws such as insecure authentication, authorization bypasses, misconfigurations, and privilege escalation paths. Simulate real-world … steps What You Will Ideally Bring: Application security knowledge - strong grasp of OWASP Top 10 and API security issues.Contract Details: Hands-on pentesting experience - 3-7+ years in penetration testing, red teaming, or offensive security across networks, cloud, AD, and web apps. Offensive security tooling - expertise with Nmap, Nessus, Masscan, Burp Suite, Metasploit, Cobalt Strike, Mimikatz, SQLmap More ❯

Build and configure virtual networks and subnets to support scalable and secure architecture designs. Perform patching and maintenance of virtual machines and Docker containers to ensure environment stability. Conduct penetration testing and IT health checks across all infrastructure resources to maintain compliance with Client’s requirements. Implement Infrastructure as Code (IaC) practices using Terraform and related tools to … with security, compliance, and performance standards. Required Skills Strong experience in infrastructure automation, Azure Devops and IaC scripting. Proficient in managing Terraform configurations and dependencies. Should have experience in testing Terraform infrastructure code. Should have experience in creating automated machine images for multiple platforms. Strong knowledge in configuration management and deployment automation. Hands-on experience in CI/CD More ❯

re looking for: Proven experience leading security in SaaS, ideally PE-backed, across multiple regions including North America Hands-on technical expertise in cloud and infrastructure security, incident management, penetration testing, and remediation Deep knowledge of ISO27001, SOC2, and data residency requirements, with experience embedding and maintaining compliance Skilled at modernising security culture, implementing scalable processes, and embedding More ❯

A good background in Security Operations\ Incident Response in a managerial or lead role Strong technical knowledge Demonstrable stakeholder management experience A technical background in infrastructure, security engineering or penetration testing preferred Please send your CV for immediate consideration. More ❯