Senior Backend Engineer (Blockchain)

Senior Backend Engineer (Blockchain)

Location: Tel Aviv (Central, walking distance from train station) | Hybrid Model

About the Role

Join a fast-growing, highly successful Web3 security startup, co-founded by seasoned cybersecurity experts (including former Head of Offensive Security at a F50 tech company). We are building the next frontier of user protection in the decentralized world.

Our extension secures millions of daily transactions across 1,000+ EVM chains and Solana, boasting a flawless record of zero user losses since January 2023. This is an opportunity to join the founding engineering team, shape the product, and scale critical infrastructure that protects millions in daily DeFi and Web3 usage.

What You Will Do

As a Senior Backend Engineer, you will be crucial in designing and building the core infrastructure that drives our security platform:

• Design, develop, and maintain highly scalable and resilient backend services and APIs using Node.js and Nest.js.
• Implement secure transaction validation and sophisticated smart contract interaction logic across multiple chains.
• Lead architectural decisions for cloud-based backend systems, focusing on performance, resilience, and security.
• Contribute to code reviews and foster a high-performance engineering culture.

What You Bring

We are looking for an exceptional engineer who thrives in high-growth environments:

• 8+ years of overall experience in software development.
• Proven, hands-on experience with Blockchain technology, DeFi protocols, and cryptocurrency wallets.
• Expert-level proficiency in Node.js.
• Previous experience working in tech startups or high-growth environments.

Nice to Have (Bonus Skills)

• Experience with Nest.js.
• Experience with Solidity or smart contract development.
• Deep knowledge of Cybersecurity, especially in Web3 threat models and attack vectors.
• Experience developing high-performance Chrome extensions.

Why Join Us?

• Impact: Help shape the product and technical direction from the ground up as part of the founding engineering team.
• Mission: Work on a critical and successful Web3 security solution with strong market traction and proven results.
• Team: Collaborate with top-tier experts in both cybersecurity and blockchain.
• Location: Enjoy a central, accessible office location in Tel Aviv, right next to the train station.