Senior Blockchain Security Engineer, Offensive Security

Hospitable.com; Canada; On-site; CAD 192,000; Full time

Job summary

A leading company in the crypto sector seeks a Senior Blockchain Security Engineer for their Protocol Security team. This role focuses on identifying vulnerabilities in onchain and offchain systems, engaging in real offensive security work to support the integrity of blockchain infrastructure. Candidates should possess extensive Red Team experience, strong knowledge of blockchain protocols, and the ability to articulate findings to diverse audiences.

Qualifications

• 3+ years of Red Team experience with advanced offensive security skills.
• Proven track record in discovering vulnerabilities in blockchain systems.
• Strong knowledge of L1/L2 networks and DeFi protocols.

Responsibilities

• Conduct threat modeling and security assessments on blockchain-focused products.
• Design and execute Red Team operations simulating real-world threats.
• Produce clear technical reports and actionable insights from offensive exercises.

Skills

Red Team experience

Offensive security skills

Threat modeling

Security assessments

Blockchain systems vulnerability discovery

Communicating clearly

Education

Computer Science or Cybersecurity background

Job description

Senior Blockchain Security Engineer, Offensive Security

Crypto Jobs

Job Description

• Title: Senior Blockchain Security Engineer – Offensive Security
• Job Type: Full-time
• Team: Protocol Security (within Coinbase’s Offensive Security function)
• Compensation: CA$191,100 (base) + bonus + equity + benefits
• Job ID: G2702

Join Coinbase’s Protocol Security team to attack before others can — identifying novel vulnerabilities in both onchain (smart contracts, protocols, L1/L2s) and offchain infrastructure, and simulating real-world adversaries. The objective: fortify onchain development as Coinbase scales to bring 1B+ users onchain safely.

• Conduct threat modeling and security assessments on blockchain-focused products
• Design and execute Red Team operations simulating real-world threats
• Produce clear technical reports and actionable insights from offensive exercises
• Collaborate with detection and response teams to boost security coverage
• Help build Coinbase’s next-gen security tooling and frameworks
• Stay on top of latest vulnerabilities, threats, tools, and research in blockchain and offensive security
• 3+ years of Red Team experience with advanced offensive security skills
• Proven track record of discovering vulnerabilities in blockchain systems (protocol, app, infra)
• Strong knowledge of L1/L2 networks, DeFi protocols, staking, consensus mechanisms
• Capable of writing and speaking clearly to both technical and non-technical audiences
• Background in Computer Science, Cybersecurity, or equivalent experience
• Hands-on knowledge of security mitigation strategies in distributed systems

Preferred / Nice to Haves

• Participation in CTFs, bug bounty programs, CVE research
• Experience in any of:
• Application Security
• Network Security
• 1+ years of Software Engineering experience (understanding code at depth is critical)

Why This Role Is Unique

• High-impact frontier work: You’ll be helping Coinbase secure not just web infrastructure, but onchain systems that power wallets, staking, DeFi, and more.
• Real offensive security: It’s not just audits — you're red teaming onchain platforms, crafting novel exploits, and breaking systems before attackers can.
• Crypto-native: Expect to dive into the nitty-gritty of smart contract vulnerabilities, blockchain consensus, and exploit techniques specific to Web3.

Note: The subsequent job titles listed at the end seem unrelated to this role and are likely placeholders or formatting errors, so they are omitted from the refined description.