Senior Product Security Engineer

Airwallex (UK) Limited

Job Overview

Location

US - San Francisco

Job Type

Full-time

Full Job Description

📋 Description

• Partner with Infrastructure, Product, and Engineering teams to analyze new or existing applications, software, or services and drive security improvements across the organization.
• Design, develop, test, and evaluate new security controls tailored to a rapidly scaling global fintech platform.
• Perform incident response activities including threat hunting through endpoint, network, and cloud log sources such as EDR, authentication systems, firewalls, and network traffic logs.
• Design and implement custom detection strategies and automated workflows to support the full incident response lifecycle from detection to recovery.
• Analyze and develop integration, testing, operations, and maintenance processes for secure systems and infrastructure.
• Use data from diverse security tools to identify, investigate, and mitigate cyber threats across cloud, network, and application layers.
• Design, test, implement, deploy, and maintain cybersecurity infrastructure projects including detection systems, access controls, and monitoring platforms.
• Investigate, analyze, and respond to cybersecurity incidents within Airwallex’s global environment, ensuring timely containment and remediation.
• Conduct security assessments of systems and networks to identify configuration deviations, policy violations, and vulnerabilities, then support mitigation and remediation efforts.
• Perform collection, processing, and geolocation of threat infrastructure to track, exploit, or neutralize malicious actors.
• Execute network navigation, tactical forensic analysis, and defensive operations to secure systems and preserve digital evidence.
• Identify, collect, examine, and preserve digital forensic evidence using analytical and investigative techniques in alignment with incident response protocols.
• Collaborate cross-functionally to embed security into product and infrastructure design, ensuring security is built-in rather than bolted-on.
• Apply first-principles thinking to solve complex security challenges in a high-growth startup environment with speed and rigor.
• Leverage AI tools to enhance threat detection, automate repetitive tasks, and improve overall security posture efficiency.
• Communicate technical security concepts and risks clearly to non-technical stakeholders to enable informed decision-making.
• Maintain and evolve security standards and practices to align with global regulatory expectations and industry best practices.
• Work within a globally distributed team to support security operations across multiple time zones and jurisdictions.
• Continuously learn and adapt to emerging threats, attacker techniques, and evolving cloud-native architectures.

🎯 Requirements

• 5+ years working in a security engineering or incident response role within a tech company
• In depth experience with at least one major cloud platform
• Strong knowledge of common software development tools and infrastructure, including CI/CD tooling and pipelines
• Comprehensive understanding of common attacker tools and techniques, how they can be detected and prevented, and ability to respond to incidents with high depth and quality of investigation
• Strong communication skills with the ability to explain technical security and software concepts to a non-technical audience
• A passion for solving the complex challenges of high-growth startups

🏖️ Benefits

• Opportunity to work on a global payments and financial platform used by over 200,000 businesses including Brex, Rippling, Navan, Qantas, and SHEIN
• Collaborative environment with over 2,200 innovative team members across 26 global offices
• Exposure to cutting-edge security challenges in a fast-scaling fintech company valued at $8 billion
• Access to AI tools to work smarter and solve problems faster
• Ownership of security initiatives with direct impact on company-wide infrastructure and product safety
• Equal opportunity employer valuing diversity and inclusion across all dimensions

Skills & Technologies

Python

Java

Kotlin

GCP

Kubernetes

Senior

Onsite

Degree Required

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Airwallex (UK) Limited

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About Airwallex (UK) Limited

Airwallex is a global financial technology company providing cross-border payment and banking infrastructure for businesses. It offers multi-currency accounts, foreign exchange, card issuing, expense management, and embedded finance APIs. Founded in Melbourne in 2015, the company serves enterprises and SMEs across Asia-Pacific, Europe, and the Americas, operating under licenses in multiple jurisdictions and processing billions in annualized transaction volume.

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