Security Engineer - Digital Assets

Security Engineer - Digital Assets

Flow Traders is looking for a Security Engineer with a strong interest in digital assets security, crypto threats, and smart contract risk management. In this role, you will support the security of our blockchain infrastructure, digital asset wallets, DeFi interactions, and smart contract engagements. You will be part of a highly skilled security team, learning and contributing to the safe and secure growth of Flow Traders' crypto trading business.

The successful Security Engineer at Flow Traders will be highly self-motivated, has strong attention to detail, and a clear focus on innovation and protection, with a hacker mindset. This is a unique opportunity to join a leading proprietary trading firm with an entrepreneurial and innovative culture at the heart of its business. We value quick-witted, creative minds and challenge them to make full use of their capacities.

What You Will Do

• Assist in monitoring and analyzing threats relevant to the crypto ecosystem, including protocol vulnerabilities, DeFi exploits, and wallet-related risks
• Support the security review and risk assessment of smart contracts, DeFi protocols, and blockchain applications Flow Traders interacts with
• Help maintain and improve the security of wallet infrastructure, including cold, hot, and hardware wallet management practices
• Contribute to incident response and investigations involving digital asset systems and platforms
• Participate in threat intelligence gathering related to blockchain networks, new attack vectors, and emerging threat actors in the crypto space
• Collaborate with engineering, trading, and blockchain development teams to improve secure development practices and promote secure deployment of smart contracts and digital asset tools
• Help evaluate and integrate security tools for on-chain monitoring, anomaly detection, and smart contract auditing.

What You Need To Succeed

• 1–3 years of experience in cybersecurity, with a focus on blockchain security, digital assets, or a strong interest in these areas
• Familiarity with blockchain fundamentals, digital wallets, public/private key cryptography, and transaction mechanics
• Understanding of common crypto threats, such as private key leakage, rug pulls, phishing, reentrancy, and flash loan attacks
• Exposure to smart contract platforms (e.g., Ethereum, Solana) and smart contract languages like Solidity is a plus
• Hands-on experience with scripting or programming (e.g., Python, JavaScript) to automate tasks or analyze blockchain data
• Eagerness to learn, attention to detail, and a passion for the rapidly evolving digital asset security landscape
• Creative and independent thinking
• This role is hybrid based in our Amsterdam location