Junior Application Security Engineer (Basingstoke, Hybrid: 2 days onsite)

Infosum is looking for a Junior Application Security Engineer with a keen interest in application and cloud security. This role is perfect for someone early in their career who wants to develop hands‑on experience in securing SaaS platforms. You'll be supported by senior engineers while learning how to test applications, uncover vulnerabilities, and embed secure‑by‑design practices into products.

This position is based in Basingstoke with two days a week onsite.

What you’ll do

• Assist with application security testing across web apps, APIs, and cloud infrastructure.
• Support penetration testing and help document findings and recommendations.
• Work closely with developers to learn how to identify and remediate security issues.
• Contribute to threat modeling and risk assessments under the guidance of senior engineers.
• Gain practical experience with security testing tools and automation.
• Stay up to date wit...