Mobile & Web Security Pen Tester & Consultant

Atos; Singapore; On-site; SGD 70,000 - 120,000; Full time

Job summary

Atos in Singapore is seeking a mid‑level Security Penetration Tester to join our security testing practice. You will evaluate mobile apps against security standards, review code, and perform comprehensive assessments of web and backend components.

We value strong hands-on experience, ability to analyze architectures, and proficiency with reverse engineering tools. Expect collaboration, rigorous reporting, and opportunities to work across client engagements.

Qualifications

• Bachelor’s degree in Computer Science, Information Security, or related discipline.
• 2+ years of hands-on penetration testing or relevant offensive security experience.
• Certifications such as OSCP, OSCE, OSEE, OSWE, Red Teaming, Cloud Security, AI security credentials are advantageous.

Responsibilities

• Strong hands-on experience performing compliance testing of mobile applications meeting security standards and regulatory requirements (e.g., MAS TRM, OWASP MSTG).
• In-depth knowledge of iOS/Android architectures and security mechanisms; perform secure code reviews of Swift/Kotlin/Objective-C/Java apps.
• Proficient with reverse engineering tools (IDA Pro, Ghidra, Frida) and bridging security findings into actionable fixes.
• Ability to develop BURP extensions to aid mobile and web application tests.
• Conduct Web Application Penetration testing following industry-standard methodologies.
• Perform comprehensive source code reviews across mobile, web, and backend codebases.

Skills

Penetration testing

Mobile security testing

Secure code review

Reverse engineering

Education

Bachelor’s degree in Computer Science or Information Security

Tools

IDA Pro

Ghidra

Frida

Job description

Atos in Singapore is seeking a mid‑level Security Penetration Tester to join our security testing practice. You will evaluate mobile apps against security standards, review code, and perform comprehensive assessments of web and backend components.

We value strong hands-on experience, ability to analyze architectures, and proficiency with reverse engineering tools. Expect collaboration, rigorous reporting, and opportunities to work across client engagements.