Mobile Engineering Director, Security

About OKX At OKX, we believe the future will be reshaped by crypto, ultimately contributing to every individual's freedom. OKX is a leading crypto exchange and developer of OKX Wallet, giving millions access to crypto trading and decentralized applications (dApps). We are a trusted brand backed by our Proof of Reserves, with a global presence spanning multiple offices united by our core principles: We Before Me, Do the Right Thing, and Get Things Done. Security is foundational to everything we build. As we scale across new markets and continue to ship innovative security features, we are looking for a seasoned engineering leader to drive our security engineering mission at the platform and application level. Role Overview The Engineering Director, Security will lead a high-performing security engineering function responsible for protecting OKX's platforms, mobile applications, and infrastructure. This is a senior leadership role that spans technical strategy, team building, and hands-on security architecture. You will work cross-functionally with mobile, platform, compliance, and operations teams to embed security across the full software development lifecycle. What You'll Be Doing Define and drive the security engineering roadmap, aligning with broader organizational and product objectives across web, mobile, and infrastructure domains. Lead, grow, and retain a diverse team of security engineers, fostering a culture of technical excellence, collaboration, and continuous improvement. Own the strategy and execution of application security programs, including threat modeling, vulnerability management, secure code review, and bug bounty operations. Partner with mobile and platform engineering teams to embed secure development practices into the SDLC, covering iOS, Android, and web applications. Oversee the design and implementation of security SDKs, device integrity mechanisms, and anti-abuse controls for large-scale consumer applications. Establish and track key se…