Lead Offensive Security Engineer

Location : Fully Remote

About Us

Appsecure is a leading offensive cybersecurity and red-team services company trusted by Fortune 500s, high-growth startups, and global enterprises. Our team consists of top bug bounty hunters, seasoned red teamers, and security researchers who deliver high-impact security testing across web, mobile, API, and cloud infrastructures.

We are CREST-accredited, CSA Singapore compliant, and we pride ourselves on providing “Apple-quality” offensive security services to our customers.

Role Overview

We are looking for a Senior Penetration Tester to join our global offensive security team. The ideal candidate is highly skilled in identifying and exploiting vulnerabilities across Web, API, Mobile, and Network infrastructures. You’ll work on challenging real-world engagements, simulate advanced attacker techniques, and deliver high-quality reports that drive real business impact.

Key Responsibilities

• Conduct penetration testing across web, API, mobile, and network applications.
• Perform threat modeling, vulnerability assessments, and exploit research.
• Simulate advanced attack scenarios including business logic flaws, privilege escalation, and chained exploits.
• Contribute to red-team exercises and advanced adversary simulations.
• Work with clients to explain findings, remediation steps, and best practices in a clear and professional manner.
• Mentor junior testers and contribute to Appsecure’s research and methodologies.
• (Optional) Participate in bug bounty programs to strengthen hands-on offensive skills.

Requirements

What We Offer