Senior Staff Software Engineer, Mobile P2P & Fiat (Web3)

TL;DR

Senior Staff Software Engineer, Mobile P2P & Fiat (Web3): Owning the mobile engineering for peer-to-peer trading and fiat payment experiences with an accent on cross-border payments and regulatory compliance. Focus on building localized payment flows, integrating third-party PSPs, and optimizing AI-assisted development workflows.

Location: Must have current right to work in Hong Kong (no visa sponsorship provided)

Company

A leading crypto exchange and developer of OKX Wallet, providing millions of users access to crypto trading and decentralized applications.

What you will do

• Own mobile engineering for P2P trading flows, including channel mechanics and transaction journeys.
• Build and maintain cross-regional fiat payment integrations (local banks, e-wallets, PSPs) for SEA, LATAM, and MENA markets.
• Ensure payment flows and data handling comply with international regulatory requirements and KYC tiers.
• Collaborate with compliance, legal, and product teams to translate regulations into user-friendly mobile experiences.
• Lead technical decisions on payment architecture, balancing speed, maintainability, and compliance.
• Implement and maintain repeatable personal AI development workflows in the coding process.

Requirements

• 8+ years of software engineering experience shipping production-quality mobile systems at scale.
• Deep expertise in P2P trading channels and buy/sell transaction flows in consumer-facing mobile apps.
• Hands-on experience with cross-regional fiat payment integrations in SEA, LATAM, or MENA.
• Working knowledge of fiat channel compliance, including transaction limits and regional constraints.
• Proficiency in AI-assisted development and building automated AI engineering workflows.
• Strong cross-functional communication skills for alignment with legal and compliance teams.

Nice to have

• Professional experience with iOS (Swift/Objective-C) or Android (Kotlin/Java).
• Background in fintech, crypto, or regulated consumer financial products.
• Experience with anti-fraud mechanisms in P2P or fiat payment contexts.
• Experience operating across multiple regulatory environments simultaneously.

Culture & Benefits

• Competitive total compensation package.
• L&D programs and education subsidies for professional growth.
• Comprehensive healthcare schemes for employees and their dependents.
• Wellness and meal allowances.
• Team building programs and company events.