Web3 Security Solidity Jobs in New York, United States

About us:

Ether.fi is an innovative, rapidly growing crypto-native financial platform on a mission to put users in control of their wealth—making it easy to save, earn, and spend crypto. Positioned as a leading decentralized finance (DeFi) bank, ether.fi offers a fully integrated, non-custodial suite of products—Stake, Liquid, and Cash—that bridge crypto utility with real-world convenience.

With over $8B in assets under management and a lean, agile team of 25+, we’re building sustainable, secure, and scalable financial infrastructure to onboard the next billion users to crypto. Our offerings include liquid staking, automated yield strategies, and crypto-native payment solutions like credit cards, enabling a comprehensive decentralized banking experience.

As we continue to scale, we’re actively hiring talented, mission-driven individuals who want to shape the future of finance from the ground up.

Learn more atether.fi.

Position Overview:

As a talented Smart Contract Engineer with a deep understanding of Solidity and extensive experience in writing and deploying smart contracts on the Ethereum blockchain you will be a key component of the ether.fi team. The ideal candidate will have a proven track record of developing secure, efficient, and innovative smart contracts. Experience with development tools like Foundry and Hardhat for smart contract testing and deployment is highly regarded.

This role is onsite at of one of our locations 4x per week. We have offices in Toronto, Denver, and the Cayman Islands.

What you will do:

• Design, develop, and deploy smart contracts on the Ethereum/L2 blockchains, ensuring they are secure, efficient, and optimized for gas consumption.

• Conduct thorough testing and auditing of smart contracts to ensure security and functionality, utilizing tools such as Forge for an enhanced development workflow.

• Stay abreast of the latest developments in Ethereum, Solidity, and blockchain technology to continually improve contract efficiency and security.

• Contribute to the development of internal best practices for smart contract development, including security measures, coding standards, and documentation.

• Participate in code reviews and provide constructive feedback to peers to maintain high-quality code standards.

• Assist in the development and deployment of blockchain infrastructure

What we are looking for:

• Bachelor’s degree in Computer Science, Engineering, or a related field, with a strong foundation in cryptographic principles and blockchain technology. Advanced degrees are a plus.

• Proficient in Solidity with a solid portfolio of deployed smart contracts and DApps.

• Proficient in smart contract security practices and common vulnerabilities.

• Proficient in Cryptography techniques such as zero-knowledge proofs, roll-ups, etc

• Experience with Ethereum development tools such as Foundry and Hardhat

• Experience with DevOps practices and tools for blockchain development is advantageous.

• Excellent problem-solving skills, with the ability to work both independently and within a collaborative team environment.

• Strong communication skills to effectively articulate technical challenges and solutions to both technical and non-technical team members.

Benefits:

• Competitive salary, performance-based incentives, and token allocation grant

• Opportunity to work with a Top 4 Ethereum protocol, by TVL

• Opportunities for professional development and growth within the organization

• Health, dental, and vision insurance plans

• Collaborative and inclusive work culture

• Exposure to cutting-edge technologies in the blockchain and cryptocurrency space

• Global team with opportunity for travel and working out of our 3 offices around the world

• 4 weeks work from anywhere

• Exciting company events and team-building off-sites