Wallet & Crypto Security Engineer (Web3)

TL;DR

Wallet & Crypto Security Engineer (Web3): Leading the security architecture of cold, warm, and hot cryptocurrency wallets with an accent on MPC strategies, private key lifecycle management, and node security. Focus on auditing smart contract interactions, preventing on-chain vulnerabilities, and ensuring compliance with FIPS standards to protect digital assets.

Location: Must be based in or able to work from Taguig City (Philippines), Hong Kong, or Singapore

Company

hirify.global is a leading, BSP-regulated crypto brand in the Philippines, serving over 18 million users with a comprehensive mobile financial services platform.

What you will do

• Lead and maintain security architecture for cold, warm, and hot wallets.
• Manage MPC wallet security policies and multi-sig smart contract permissions.
• Conduct security hardening for BTC, ETH, and Tron nodes and RPC interfaces.
• Audit interactions with external smart contracts to prevent reentrancy and phishing attacks.
• Perform regular disaster recovery drills to mitigate internal and external security risks.
• Collaborate cross-functionally to implement security improvements that impact customer experience.

Requirements

• Bachelor’s degree in Computer Science, Cybersecurity, or related field.
• 1-3 years of professional experience in Web3 or blockchain security.
• Proficiency in cryptography, FIPS 140-2/3 standards, and wallet architecture.
• Deep knowledge of MPC, TSS threshold signatures, and on-chain multi-sig mechanisms.
• Practical experience with public chain node operations and RPC security hardening.
• Ability to independently conduct smart contract security audits and risk assessments.

Culture & Benefits

• Opportunity to work at a pioneer crypto brand with a massive user base.
• Fast-growing organization with clear paths for career advancement.
• Culture that values data-backed ideas and meaningful innovation.
• Collaborative environment working across multiple international territories.