Job Description

Job Summary

As a Senior Security Engineer on the Active Operational Defender track you will act as a core operational lead for threat detection, penetration testing and incident containment across Flywire's global footprint. You will combine an aggressive attacker's mindset with the analytical rigour needed to build high fidelity detection engineering, serving as a primary responder when live incidents put our global payment networks at risk.

Responsibilities and Tasks:
Offensive Penetration Testing & Red Teaming
Personally adopt an attacker's mindset to uncover complex logic flaws, carry out exploit research and emulate adversarial behaviour across financial platforms and product architectures.
Run full spectrum manual security reviews that go beyond automated scanning, including source code audits, API exploitation and cloud configuration penetration testing.
Where in scope, extend adversarial testing to internal and external AI features, probing for prompt injection and other LLM specific weaknesses.
Threat Detection Engineering & SIEM
Design, build and deploy high fidelity detection rules,



behavioural analytics and automated alert workflows within the enterprise SIEM to catch anomalous activity at scale.
Partner with SecOps to continuously tune detection coverage against the current threat landscape, referencing frameworks such as MITRE ATT&CK.;
Incident Response & Forensics
Lead technical containment, forensic collection and rapid threat eradication during active, critical security incidents.
Orchestrate post incident root cause analysis and translate findings into concrete engineering and detection improvements.
Cross Functional Collaboration & Technical Mentorship
Embed within security operations and engineering planning to ensure detection and response capability keeps pace with the platform.
Provide expert level guidance on exploit chains and incident findings to engineering and leadership stakeholders.
Mentor junior security engineers on offensive tooling, detection engineering and incident response practice.

📌 Senior Security Engineer Offensive Bengaluru
🏢 Flywire
📍 Bengaluru