Job Details

Senior Security Engineer, Insider Risk

At Airwallex, a unified payments and financial platform for global businesses, we empower over 150,000 companies worldwide with integrated solutions for business accounts, payments, spend management, treasury, and embedded finance.

Founded in Melbourne, our team of 1,800+ professionals operates across 26 offices worldwide and is valued at US$6.2 billion.

Attributes We Value

We hire builders with founder‑like energy who want real impact, accelerated learning, and true ownership. You bring strong role‑related expertise and sharp thinking, and you're motivated by our mission and operating principles. You move fast with good judgment, dig deep with curiosity, and make decisions from first principles, balancing speed and rigor.

You're humble and collaborative; turn zero‑to‑one ideas into real products, get stuff done end‑to‑end, and use AI to work smarter.

What You'll Do

• Design, develop, and maintain advanced detection rules and automated response mechanisms to surface insider and fraud risk, using behavioral analytics, anomaly detection, and rule‑based logic.
• Deep‑dive into user, system, and financial data to uncover complex fraud tactics and potential abuse by insiders or privileged users.
• Contribute insight into evolving fraud trends and trusted insider behaviors, strengthening Airwallex's proactive security stance through continuous learning and agile solutioning.
• Mentor peers on advanced detection strategies, fraud taxonomy development, and the broader fraud/insider threat lifecycle, fostering technical depth on the team.

Responsibilities

• Lead the creation and tuning of high‑efficacy detection signatures and analytics across SIEM, EDR, DLP, and payment monitoring platforms.
• Support relevant incident response and digital forensics efforts.
• Identify and mitigate the risk of issues such as account misuse, privilege escalation, and social engineering within the organization.
• Collaborate with fraud analysts, KYC operations, compliance, and the broader security team to improve high‑risk workflows (onboarding, KYC, authentication, funds movement).
• Create, maintain, and operationalize detection logic for insider and fraud scenarios.
• Share domain best practices in threat modeling and detection with the engineering team.

Who You Are

• Intellectually curious, especially about insider threat frameworks, fraud prevention, the psychology of trust abuse, and organizational risk.
• Adept at navigating ambiguity, seeking out new data sources, and synthesizing signals across disparate platforms and logs.
• Proactive in identifying abuse patterns, hypothesizing how attackers (internal and external) might operate within a complex ecosystem, and testing theories through technical proof.
• Articulate when presenting complex scenarios to stakeholders, and skilled at collaborating across business, security, compliance, and engineering functions.

Minimum Qualifications

• Bachelor's degree in Computer Science, Information Security, or relevant field.
• 7+ years of hands‑on experience in security engineering or detection engineering, with a strong focus on insider threat or fraud risk.
• Direct experience building, tuning, and operating detection and monitoring solutions (e.g., SIEM, EDR, DLP, user behavior analytics, and fraud detection platforms).
• Expertise designing and implementing DLP controls and correlating exfiltration techniques with insider scenarios.
• Working knowledge of modern cloud‑native architectures and how they impact identity, access, and monitoring.
• Experience coordinating incident response and digital forensics.

Preferred Qualifications

• Experience within Fintech, payment, or regulated environments handling substantial fraud or insider risk volumes.
• Strong background in digital forensics, transaction analysis, and linking forensic evidence to potential business impact.
• Understanding of regulatory requirements, compliance best practices, and incident disclosure obligations for financial institutions.

Equal Opportunity

Airwallex is proud to be an equal opportunity employer. We value diversity and consider applicants based on merit, qualifications, competence and talent. We do not regard color, religion, race, national origin, sexual orientation, ancestry, citizenship, sex, marital or family status, disability, gender, or any other legally protected status when making our hiring decisions. If you have a disability or special need that requires accommodation, please let us know.

Compensation Range: $200K – $300K