Senior Mobile Security Engineer — Offensive App Security

Klarna; Milano; Ibrido; EUR 87.000 - 122.000; Tempo pieno

Descrizione del lavoro

Klarna is seeking an Mobile Application Senior Security Engineer to protect iOS and Android apps. You will conduct penetration tests, red-team exercises, and surface sandboxing and permission issues before attackers exploit them.

You’ll work with engineering teams to fix findings, test app-hardening and RASP protections, and document actionable fixes. This role requires hands-on mobile security expertise and familiarity with MASVS/MASTG.

Competenze

• Hands-on offensive mobile security work in iOS/Android.
• Fluency with mobile security tooling and architectures.
• Experience with MASVS/MASTG as reference framework.

Mansioni

• Run offensive security assessments on Klarna's mobile apps.
• Reverse‑engineer app binaries to surface weaknesses.
• Drive concrete fixes with engineering teams; produce actionable reports.
• Evaluate app-hardening and RASP protections; stress-test them.

Conoscenze

Mobile security

Penetration testing

Red team

Strumenti

Frida

Objection

MobSF

jadx

apktool

Ghidra

Hopper

Burp Suite

mitmproxy

Descrizione del lavoro

Klarna is seeking an Mobile Application Senior Security Engineer to protect iOS and Android apps. You will conduct penetration tests, red-team exercises, and surface sandboxing and permission issues before attackers exploit them.

You’ll work with engineering teams to fix findings, test app-hardening and RASP protections, and document actionable fixes. This role requires hands-on mobile security expertise and familiarity with MASVS/MASTG.