Expert Application Security Engineer (iOS)

Confirmed live in the last 24 hours

OKX

Hong Kong, Hong Kong SAR; Singapore, Singapore

On-site

Posted March 16, 2026

Job Description

About OKX:

At OKX, we believe that the future will be reshaped by Crypto, ultimately contributing to every individual's freedom. OKX began as a crypto exchange giving millions of people access to crypto trading and over time becoming among the largest platforms in the world. In recent years, we have developed one of the most connected Web3 wallets used by millions to access decentralized crypto applications (dApps). OKX is a trusted brand by hundreds of large institutions seeking access to crypto markets on a reliable platform that seamlessly connects with global banking and payments. In the last year, OKX has expanded into new markets including Australia, Brazil, Netherlands, Singapore and Turkey, with plans to launch in the US, Belgium and the UAE.

We are deeply committed to shaping a fairer, more transparent and accessible society through blockchain technology. This is why we publish proof of reserves monthly, and continue to ship new innovative security features.

Responsibilities:

Identify and address security vulnerabilities in code, systems, and networks using manual review, automated tools, and threat modeling.
Manage and optimize application security tools, processes, and alerts.
Validate and respond to Bug Bounty submissions.
Stay informed on the latest offensive security techniques, application security threats, and best practices, and suggest improvements to enhance our security posture.
Produce detailed reports of your findings, present them to both management and technical teams, and contribute to preventing real-world attacks.
Collaborate with development teams to implement secure coding practices.
Work alongside other teams, including operations and compliance, to ensure that security is a consistent priority across the organization.
Participate in incident response and management activities.