Crypto Wallet Security Architect for MPC & On-Chain

Coins.ph; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

Coins is seeking a security-focused Web3 professional to lead wallet security architecture and MPC governance across cold, warm, and hot wallets. You will ensure compliance with top-tier standards like FIPS 140‑2/3 and manage disaster drills to minimize single points of failure.

You will also harden node security for BTC/ETH/TRON ecosystems and audit interactions with external contracts to mitigate on‑chain risks. A background in blockchain security and 1–3 years of Web3 experience is required.

Qualifications

• Bachelor’s degree in Computer Science, Cybersecurity, Cryptography, Software Engineering, Blockchain or related majors, with 1–3 years of Web3 or blockchain security experience.
• Familiar with cryptography principles, key management and encrypted storage; knowledge of FIPS 140‑2/3 standards and wallet architecture.
• In-depth knowledge of MPC, TSS threshold signature and on‑chain multi‑signature mechanisms; experience with disaster recovery and risk investigations.
• Experience with public chains (BTC, ETH, TRON) node operation, RPC security hardening and on‑chain attack prevention.
• Familiar with common smart contract security vulnerabilities and able to perform contract interaction audits.

Responsibilities

• Wallet architecture security construction: lead and maintain security architecture of cold, warm and hot wallets and ensure compliance with industry standards.
• MPC & Multi‑Signature strategy management: manage security policy configuration, permissions and isolation for MPC wallets and multi‑sig contracts; conduct disaster recovery drills.
• On‑Chain Transaction & Node Security: harden and maintain full nodes and RPC interfaces for major blockchains, defend against node hijacking and unauthorized access.
• Smart Contract Interaction Review: audit security of interactions with external contracts (USDT, USDC, DEXs) to prevent vulnerabilities.

Skills

Cryptography basics

MPC / TSS security

Public chain node security

Smart contract security

Risk assessment & incident response

Education

Bachelor’s degree in Computer Science or related

Job description

Coins is seeking a security-focused Web3 professional to lead wallet security architecture and MPC governance across cold, warm, and hot wallets. You will ensure compliance with top-tier standards like FIPS 140‑2/3 and manage disaster drills to minimize single points of failure.

You will also harden node security for BTC/ETH/TRON ecosystems and audit interactions with external contracts to mitigate on‑chain risks. A background in blockchain security and 1–3 years of Web3 experience is required.