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Senior Security Application Engineer
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At Pleo, we’re on a mission to revolutionise the way businesses manage company spending. No more outdated processes, clunky spreadsheets, or frustrating delays – we believe spend management should be seamless, empowering, and surprisingly effective for finance teams and employees alike. We’re creating tools that promote autonomy, foster trust, and let businesses focus on what truly matters. About the role We’re looking for a Senior Application Security Engineer to join our Security team at Pleo. In this role, you will help shape the future of application security at Pleo and be part of the wider effort to protect our customers’ money and data as we scale. If you’re excited about applying security in pragmatic, scalable ways – and are passionate about building resilient financial products – then this is the opportunity for you What you’ll be doing Partner with engineering teams to design and review secure technical solutions Dive deep into authentication, encryption, and partner integration security topics Help triage and resolve issues identified through our bug bounty program Guide developers on secure coding practices and help fix identified vulnerabilities Support GRC and DevOps teams with automation and security controls in our CI/CD pipelines Help plan, prioritise, and own the Application Security roadmap Drive long‑term security initiatives that balance automation, compliance, and access needs What you bring Strong communication skills and a pragmatic approach to security Experience working closely with developers and product teams Proficiency in at least one server‑side language – we mainly use Kotlin and TypeScript Expertise in code review and dynamic testing to identify security flaws A deep understanding of security libraries, controls, and common vulnerabilities Subject‑matter expertise in at least one technical area of application security A passion for learning and solving unfamiliar or complex problems creatively The ability to approach problems with honesty, curiosity, and clarity Bonus experience Java or Kotlin proficiency, particularly with securing JVM‑based applications Knowledge of PCI DSS, GDPR, or PSD2 and how they apply to application security Supporting compliance efforts such as audits, segmentation, or access controls Who you’ll be working with and reporting to You’ll report to our Head of Security Engineering and work closely with teams in Engineering, DevOps, GRC, and Product. Our team of specialists is highly collaborative and dedicated to enabling secure growth at scale. You’ll also have the chance to work cross‑functionally across Pleo to strengthen our security posture in line with company goals. How you’ll develop in this role Lead and refine our Application Security roadmap Drive improvements in secure development practices across engineering teams Shape and execute long‑term security initiatives that support scalable product growth Benefits Your own Pleo card (no more out‑of‑pocket spending) Lunch is on us for your work days – enjoy catered meals or receive a lunch allowance based on your local office Comprehensive private healthcare – depending on your location, coverage options include Vitality, Alan or Médis We offer 25 days of holiday + your public holidays For our team, we offer both hybrid and fully remote working options Option to purchase 5 additional days of holiday through a salary sacrifice We use MyndUp to give our employees access to free mental health and well‑being support with great success so far Paid parental leave – we want to make sure that we’re supportive of families and help you feel that you don’t have to compromise your family due to work About Your Application Please submit your application in English; it’s our company language so you’ll be speaking lots of it if you join We treat all candidates equally: If you are interested please apply through our application system – any correspondence should come from there Our lovely support isn’t able to pass on any calls/ emails our way - and this makes sure that the candidate experience is smooth and fair to everyone We’re on a mission to make everyone feel valued at work. That’s only achievable if our team reflects the diversity of the world around us - and that starts with you, hitting apply, even if you are worried you might not tick all the boxes We embrace and encourage people from all backgrounds to apply - regardless of race/ethnicity, colour, religion, nationality, gender, sex, sexual orientation, age, marital status, disability, neurodiversity, socio‑economic status, culture or beliefs When you submit an application we process your personal data as a data processor. Find out more about how your data is used in the FAQs section at the bottom of our jobs page Seniority level Mid‑Senior level Employment type Full‑time Job function Engineering and Information Technology We are unable to offer visa sponsorship for this role in any of the listed locations. #J-18808-Ljbffr
