> Markdown version of [/jobs/ext/358261-senior-penetration-tester-the-netherlands](https://www.wearedevelopers.com/jobs/ext/358261-senior-penetration-tester-the-netherlands). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Penetration Tester - The Netherlands - **Company:** Mnemonic - **Location:** Utrecht, Netherlands - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Amazon Web Services, Software System Penetration Testing, Architectural Patterns, Automation of Tests, Microsoft Azure, Cloud Computing Security, Identity and Access Management, Network Segmentation, Data Logging, Google Cloud, GWAPT, Kubernetes, Serverless Computing, Microservices - **Published:** June 14, 2026 - **Apply:** https://nl.indeed.com/viewjob?jk=8b36dc85c18ebab8 ## About the Role Do you have experience in Security?, mnemonic is looking for experienced candidates who combine deep technical expertise with business understanding and strong communication skills. Have you worked for several years with security or within related disciplines, and want to further develop your professional profile and take a leading role as a trusted advisor within the security profession? Maybe you have already worked as a penetration tester for a number of years and are looking for greater professional challenges and responsibility. You might also be a developer passionate about secure solutions and building your own testing tools, a cloud or infrastructure specialist with experience from complex IT environments, a technical architect involved in major development or migration projects, or a security analyst who solves "Capture the Flag" competitions as a hobby. Be it applications, cloud platforms or infrastructure, you fundamentally understand how technology works, you pick things apart and put them back together afterwards, and work hands-on to solve demanding problems in creative ways. As a Senior Penetration Tester, you will combine hands-on technical expertise with strategic understanding, act as a technical authority in projects, and contribute to strengthening both our customers and our internal professional environment., * Has completed higher technical education, preferably within security or related disciplines. * Has relevant experience within penetration testing, security testing, development, cloud or infrastructure security. * Has the ability to independently scope, execute and conclude complex security assessments. * Enjoys working hands-on with technology, picking things apart to understand how they work. * Works structurally and independently, and takes clear ownership of deliveries and quality. * Has the ability to clearly communicate complex technical information to both technical and non-technical stakeholders, verbally and in writing. * Has good communication skills in English, both verbally and written. * Has consultancy experience and understands the customer perspective., * Offensive Security Certified Professional (OSCP) * GIAC Penetration Tester (GPEN), GIAC Web Application Penetration Tester (GWAPT) * Certified Cloud Security Professional (CCSP), Certificate of Cloud Security Knowledge (CCSK) * Security certifications for AWS, Azure or Google Cloud Platform (GCP) * CISSP, CISA ## Description * Analyse code and architecture to identify design weaknesses, systemic risk and high-impact attack paths. * Provide concrete and strategic advice on secure architecture and solution design across application, cloud and on-prem environments. * Assess and secure high-risk areas in cloud deployments, such as Identity and Access Management (IAM), network segmentation and logging. * Test and advise on containerised and modern architectures, including Kubernetes, microservices and serverless solutions. * Develop and improve internal tooling, scripts and automation to ensure efficient, repeatable and high-quality security testing. * Establish and mature routines for efficient handling of vulnerabilities and secure operation. * Contribute as a senior resource in projects, procurement processes and security reviews. * Act as a trusted advisor for customers, facilitate technical discussions, and contribute to mentoring and knowledge sharing internally and externally. ## Related Videos - [Crypto-secure Data Management with In-Database Blockchain](https://www.wearedevelopers.com/videos/632-crypto-secure-data-management-with-in-database-blockchain) - [Understanding Kubernetes in a visual way](https://www.wearedevelopers.com/videos/100085-understanding-kubernetes-in-a-visual-way) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Build Delightful Mobile Experiences with Kotlin, Realm, and Atlas Device Sync](https://www.wearedevelopers.com/videos/694-build-delightful-mobile-experiences-with-kotlin-realm-and-atlas-device-sync) - [Instant KAI Sandboxes with vCluster: Multi-Tenant, Multi-Scheduler GPU Sharing](https://www.wearedevelopers.com/videos/100333-instant-kai-sandboxes-with-vcluster-multi-tenant-multi-scheduler-gpu-sharing) - [It's a (testing) trap! - Common testing pitfalls and how to solve them](https://www.wearedevelopers.com/videos/1193-it-s-a-testing-trap-common-testing-pitfalls-and-how-to-solve-them) ## Related Articles - [Best Companies in the Netherlands: Top 25 Companies in 2023 ](https://www.wearedevelopers.com/magazine/193-best-companies-in-the-netherlands-top-25-companies-in-2023) - [Software Developer Salary in The Netherlands [2023]](https://www.wearedevelopers.com/magazine/217-software-developer-salary-in-the-netherlands-2023) - [How to land a developer job in Amsterdam](https://www.wearedevelopers.com/magazine/36-how-to-land-a-developer-job-in-amsterdam) - [How to Find Tech Jobs in Amsterdam](https://www.wearedevelopers.com/magazine/279-how-to-find-tech-jobs-in-amsterdam) - [The Netherlands – Europe’s powerhouse for software development?](https://www.wearedevelopers.com/magazine/31-the-netherlands-europe-s-powerhouse-for-software-development) - [Best Coding Boot Camps in Germany](https://www.wearedevelopers.com/magazine/237-best-coding-boot-camps-in-germany)