Senior / Staff Software Engineer, Mobile — Core (Account & Risk)

ace-line old-record-id- ace-line old-record-id- OKX will be prioritising applicants who have a current right to work in Hong Kong, and do not require OKX s sponsorship of a visa. ace-line old-record-id- ace-line old-record-id- Who We Are ace-line old-record-id- At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual s freedom. ace-line old-record-id- ace-line old-record-id- OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. ace-line old-record-id- ace-line old-record-id- Across our multiple offices globally, we are united by our core principles: We Before Me, Do the Right Thing, and Get Things Done. These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. ace-line old-record-id- ace-line old-record-id- OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more. ace-line old-record-id- ace-line old-record-id- About The Team ace-line old-record-id- Own the account backbone of a CeFi platform trusted by strong millions, login, registration, account security, MFA, Passkey, where a single security regression is measured in real user funds. The more senior you are, the more you set the technical direction others build on. ace-line old-record-id- ace-line old-record-id- ace-line old-record-id- What You ll Be Doing ace-line old-record-id- ace-line old-record-id- Own account-system subsystems end-to-end, authentication, MFA, Passkey/WebAuthn, session and device trust, account registration and recovery, including architecture, tradeoffs, and long-term evolution. ace-line old-record-id- Design flows that are strong secure and low-friction at millions-of-DAU scale, the hardest tradeoff in this space. ace-line old-record-id- Partner with risk and security teams to turn threat models into shipped mobile defenses. ace-line old-record-id- Build our AI-native engineering practice, design automated development workflows and harness systems (agents, evals, guardrails, CI integration) that let AI do real engineering work, while strong safeguarding delivery quality and efficiency. ace-line