Penetration Tester - Mobile & Web Security Specialist

Atos Information Technology (S) Pte Ltd; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

Atos Information Technology (S) Pte Ltd is seeking a Security Consultant to perform compliance testing and security assessments of mobile apps and web services. You will review code, identify vulnerabilities, and develop testing tools across platforms.

The role requires hands-on security testing experience, strong knowledge of iOS/Android security, and certifications like CREST CRT. A proactive, independent worker who can manage multiple engagements is essential for success.

Qualifications

• Bachelor’s degree in Computer Science, Information Security, or related discipline.
• Minimum 2 years of hands-on penetration testing or relevant offensive security experience.
• Additional certifications such as OSCP, OSCE, OSEE, OSWE, Red Teaming, Cloud Security, Artificial Intelligence security credentials are advantageous.
• Excellent oral and written communication skills, including the ability to present technical findings.
• Strong organizational and time management skills; able to manage multiple engagements and meet tight deadlines.
• Self-motivated, proactive and able to work independently or as part of a team.

Responsibilities

• Strong hands-on experience performing compliance testing of mobile applications meeting Technology Security Standards and regulatory requirements (MAS TRM, OWASP MSTG).
• Deep knowledge of iOS/Android security architecture.
• Experience with secure code review of Swift/Kotlin/Obj-C/Java applications.
• Proficient with reverse engineering tools (IDA Pro, Ghidra, Frida).
• Familiar with RM architectures (arm variants).
• Experience bypassing security mechanisms (SSL pinning, root/jailbreak).
• Develop BURP extensions for tests.
• Web app penetration testing experience.
• Source code reviews across mobile, web, backend.
• Web & infrastructure security testing.

Skills

Excellent communication skills

Time management skills

Independent work

Education

Bachelor’s degree in Computer Science, Information Security, or related discipline

Tools

CREST CRT certification

Job description

Atos Information Technology (S) Pte Ltd is seeking a Security Consultant to perform compliance testing and security assessments of mobile apps and web services. You will review code, identify vulnerabilities, and develop testing tools across platforms.

The role requires hands-on security testing experience, strong knowledge of iOS/Android security, and certifications like CREST CRT. A proactive, independent worker who can manage multiple engagements is essential for success.