OverviewInfosum is looking for an Application Security Engineer with strong application security testing skills and a solid understanding of cloud environments. You will be hands-on in testing and securing our SaaS platform, working closely with our developers to uncover vulnerabilities and ensure secure-by-design practices are embedded into our products. This role is based in Basingstoke with two days a week onsite.ResponsibilitiesPerform application security testing across web apps, APIs, and supporting cloud infrastructure.Carry out penetration testing and provide clear, actionable vulnerability reports.Work closely with engineers (using Go and Node.js) to remediate security issues and integrate security best practices into the SDLC.Contribute to threat modeling and risk assessments for new and existing features.Develop or adapt security testing scripts and tools to improve automation and coverage.Keep up-to-date with emerging application and cloud security threats and share insights with the wider team.Evaluate and experiment with advanced security technologies such as Trusted Execution Environments (TEEs).RequirementsProven experience in application security testing (SAST, DAST, penetration testing).Strong understanding of cloud security fundamentals across major providers (AWS, Azure, GCP).Ability to code and review code in Go and Node.js.Familiarity with common vulnerabilities (OWASP Top 10, API security risks) and secure coding practices.Strong communication skills to clearly explain risks and collaborate effectively with developers.BenefitsA competitive salary based on your experience and ability to perform in role25 days annual leave (excluding bank holidays)8% pension contributionPrivate health care via VitalityFantastic corporate discounts and mental wellbeing support via Perkbox, including a top of line EAPSalary sacrifice schemesOffers are complemented by fantastic offices in Basingstoke and London with a fully stocked fridge / snacks and catered lunches twice a week, plus regular socials and seasonal time-off benefits. #J-18808-Ljbffr