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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Application Security Engineer - **Company:** Pennylane Sas - **Location:** Madrid, Spain (Remote available) - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Amazon Web Services, Cloud Computing, Cloud Computing Security, Code Review, Continuous Integration, DevOps, Python (Programming Language), Open Web Application Security, Ruby on Rails, Ruby, Software Vulnerability Management, Web Applications, Scripting, ReactJS, Software Security, Kubernetes, Patch Management, AWS EKS, Programming Languages - **Published:** July 3, 2026 - **Apply:** https://es.indeed.com/viewjob?jk=1c48e8a6f7a61754 ## About the Role * Able to perform offensive security assessments on an infrastructure and an application * You know how to exploit and fix a wide range of Web vulnerabilities and are able to explain them to non-technical person (not just the OWASP top 10) * You already have an experience in a programming language (Ruby, Python, JavaScript), either for quick and dirty scripting to exploit a vulnerability or for larger projects * You have an experience in cloud infrastructure security * You are able to popularize technical terms to facilitate the adoption of security measures within projects or to broadcast messages to Pennylaners * You are fluent in French and/or English (both oral and written) Your soft skills : * You are humble * You are a team player, and working with remote colleagues is not an issue for you * You are proactive and organized * You are a quick learner, and you like to work on different projects (application security, cloud infrastructure, training, ISO 27001…) ## Description Are you looking to have an impact on the daily life of millions of entrepreneurs in France (and tomorrow in Europe)? Are you looking for a work environment that values trust, proactivity, and autonomy? Then Pennylane is the right place for you ! Our vision We aim to become the most beloved financial Operating System of French SMEs and Accounting Firms (and soon, European ones). We help entrepreneurs rid themselves of time-consuming tasks related to accounting and finance while providing them with access to key financial information to assist in making the best decisions for their business., Security by design : ensure the security of Pennylane's application and infrastructure * Engage with Product Team to integrate security in our features from from the beginning, from design to delivery * Ensure the security of the main Web application written in Ruby on Rails and ReactJS: its dependencies, its code, its infrastructure and its configuration * Conducting code reviews from a secure development point of view (about 80 releases per day). * Detect vulnerability and propose associated patches * Raise the security level of our CI/CD configuration * With the DevOps team, secure our AWS infrastructure, including its Kubernetes environment (AWS EKS) Vulnerability Management * Conduct and perform regular security assessments (internally or by an external consulting companies) on the applications (code reviews/pentests/bug bounty in particular) and the infrastructure * Strengthen the current means of detecting malicious attempts * Be involved in all security incidents, investigate logs, block attacks, and propose corrective measures to prevent future threats. Compliance & awareness * Ensure compliance with ISO 27001 controls (processes) related to development (mandatory code practices, validation, patch management, vulnerability management, etc.) by training developers, monitoring projects (tech, product), conducting regular internal audits and managing tech non-conformities * Build/Improve secure development training materials and conduct regular training sessions with the developers. Engaging them in our Security Champions program * Improve the security awareness through the company * Contribute to tenders to explain our security policies and provide the necessary technical details, * To speak English (level is assessed and appreciated according to the department you're applying to) * To be energized by an ever-shifting work environment * To be highly collaborative (within your team or other stakeholders) * Sufficiently experienced to prioritize business-led actions on your day to day activity We know that some people are less likely to apply than others, if they don't feel like they meet the full list of criteria. If you're hesitating, we encourage you to apply : who knows, it might be the start of a meaningful and long-lasting collaboration. Important information for candidates Recruitment scam attempts are on the rise. We invite you to remain vigilant during your exchanges. Applications through official channels only : apply exclusively through our job postings published on our official platforms (career site, official partner pages). Always verify the sender's email address: our communications are sent from professional email addresses with the domains @pennylane.com or @pennylane-partners.com We will never ask you for payment or financial information (bank details, payment for an interview, equipment purchases, etc.) as part of the recruitment process. If such a request is made to you, it is fraudulent. We invite you to not respond and to report it to us immediately. We also want to emphasize that we fully embrace diversity, equity and inclusion and that we're doing our best to create a safe and inclusive environment. We are committed to providing an equal employment opportunity regardless of gender, sexual orientation, origin, disabilities, or any other traits that make you who you are. If anything, diversity makes us a more fun place to work at. Données personnelles Pennylane traite vos données pour gérer votre candidature et évaluer votre adéquation au poste. Si votre candidature n'aboutit pas, vos données peuvent être conservées 2 ans à compter de notre dernier échange ou de la clôture du recrutement afin de constituer & gérer un vivier de candidats. Vous pouvez vous opposer à tout moment et demander la suppression de vos données en écrivant à : dpo@pennylane.com. 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