Wallet & Crypto Security Engineer

Coins.ph; Philippines; On-site; PHP 800,000 - 1,200,000; Full time

Job summary

Coins.ph, the leading crypto brand in The Philippines, seeks an experienced security engineer to lead wallet security and on-chain protections. You will standardize key management and ensure compliance with top-tier standards, while overseeing MPC and multisignature governance across BTC, ETH, Tron, and related services.

You will audit smart contract interactions, guard against common on-chain vulnerabilities, and collaborate with cross-functional teams to safeguard customer assets and build

Qualifications

• Bachelor’s degree in Computer Science, Cybersecurity, or related field.
• 1-3 years of Web3 or blockchain security experience.
• Familiar with key management, encryption, and FIPS standards.
• Deep knowledge of MPC, threshold signatures and multisig.
• Experience with on-chain node operation and RPC security.
• Experience auditing smart-contract interactions and risks.

Responsibilities

• Lead and maintain wallet security architecture across cold, warm and hot wallets.
• Manage MPC and multi-signature strategy; conduct disaster drills.
• Hardening and operation of on-chain nodes and RPC interfaces.
• Audit security of interactions with external smart contracts and assets.

Skills

Web3 Security

MPC & Multi-Signature

Public/Private Key Management

Smart Contract Security

On-Chain Security

Security Auditing

Education

Bachelor's degree in Computer Science or related field

Tools

FIPS 140-2/3

Blockchain Platforms (BTC/ETH/TRON)

Job description

Coins is the most established crypto brand in The Philippines and has gained the trust of more than 18 million users. Through the easy-to-use mobile app, users can buy and sell a variety of different cryptocurrencies and access a wide range of financial services.

Coins is fully regulated by the Bangko Sentral ng Pilipinas (BSP) and is the first ever crypto-based company in Asia to hold both Virtual Currency and Electronic Money Issuer licenses from a central bank.

Responsibilities

• 1. Wallet Architecture Security Construction: Lead and maintain the security architecture of the company’s cold, warm and hot cryptocurrency wallets. Standardize the full lifecycle of private key generation, storage, usage, backup and destruction, and ensure the entire system complies with top-tier industry security standards including FIPS 140-2/3.
• 2. MPC & Multi-Signature Strategy Management: Manage security policy configuration, permission grading and isolation for MPC (Multi-Party Computation) wallets and multi-sig smart contracts. Conduct regular disaster recovery drills to eliminate single points of failure, permission abuse and internal malicious risks.
• 3. On-Chain Transaction & Node Security: Conduct security hardening and daily operation and maintenance for full nodes and RPC interfaces of mainstream public chains including BTC, ETH and Tron, defending against node hijacking, Sybil attacks, unauthorized access and other underlying security threats.
• 4. Smart Contract Interaction Review: Audit the security of business system interactions with external smart contracts such as USDT, USDC and DEXs. Identify and prevent common on-chain vulnerabilities including approval phishing and reentrancy attacks to avoid asset security risks.

Requirements

• 1. Bachelor’s degree or above in Computer Science, Cybersecurity, Cryptography, Software Engineering, Blockchain or related majors, with 1-3 years of working experience in Web3 or blockchain security.
• 2. Familiar with basic cryptography principles, proficient in core logic of public and private key management and encrypted storage, familiar with FIPS 140-2/3 standards and cold/hot wallet architecture.
• 3. In-depth knowledge of MPC, TSS threshold signature and on-chain multi-signature mechanisms, with hands‑on experience in permission control, disaster recovery drills and risk investigation.
• 4. Familiar with the underlying logic of mainstream public chains (BTC, ETH, TRON), with practical capabilities in public chain node operation, RPC interface security hardening and on-chain attack prevention.
• 5. Familiar with common smart contract security vulnerabilities, able to independently complete contract interaction security audits, risk assessment and problem rectification.
• 6. Strong security risk awareness and sense of responsibility, rigorous and meticulous working attitude, with in-depth understanding of digital asset and private key security. Experience in wallet security at large platforms is preferred.

Meaningful Collaborations

- The successful candidate will work cross-functionally with other relevant teams to carry out implementations that will improve and create an impact on customer experience.

Scalable Growth -

Be part of a fast-growing organization with the vision to expand its territories outside APAC which will provide opportunities for career advancement.

A Space For Bright Ideas -

Let your bright ideas be converted into meaningful changes! Coins culture welcomes new ideas backed up by data to create an impact.