Senior Staff Software Engineer, Mobile

About the role

OKX is looking for a Senior Staff Software Engineer to join its OEX Mobile Growth team, a pure mobile team at the intersection of engineering rigour, consumer growth craft and product instinct. This is not a feature delivery role: you sit upstream of requirements, shape initiatives with product and business stakeholders and own the engineering end-to-end on growth bets that move real metrics for millions of users.

Key responsibilities

• Own the full engineering lifecycle of mobile growth initiatives, from shaping the brief with product and business through to production launch and iteration.
• Build and optimise growth systems such as funnel instrumentation, referral mechanics, acquisition loops and experiment frameworks.
• Work with Product Managers, Business Development and local market teams to turn commercial goals into data-backed engineering proposals.
• Use AI coding tools actively to speed up development, improve code quality and bridge tech stacks.
• Drive technical decisions on growth infrastructure, state trade-offs clearly and defend or revise positions with evidence.
• Mentor engineers and help build a culture where engineers bring solutions, not just responses.

Required profile

• 8+ years of software engineering experience with production-quality systems at scale.
• Hands-on growth engineering experience in a consumer-facing product, such as funnel optimisation, experiment frameworks or referral systems.
• Understanding of mobile users, their behaviour and what drives retention and conversion.
• Proposal-driven, outspoken and able to push back with data and counter-proposals.
• Strong cross-functional communication and data instincts.

Nice-to-haves

• Mobile development in iOS (Swift/Objective-C) or Android (Kotlin/Java), or backend growth systems such as growth APIs, attribution pipelines or notification infrastructure.
• Rust or other systems languages, especially those who have moved from mobile-native stacks to backend tooling.
• Mobile attribution and MMPs (AppsFlyer, Adjust, SKAdNetwork), ASO (App Store Connect, Google Play Console), referral systems, k-factor mechanics or anti-fraud layers.
• Fintech, crypto or regulated consumer finance background; US, EEA and APAC market experience; A/B experiment ownership at meaningful scale.

OKX prioritises applicants with a current right to work in Singapore who do not need visa sponsorship. The role is advertised on the official OKX careers website.