Senior Software Engineer, Blockchain (Smart Contracts)
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Key skills for this role
Role Overview
The role contributes to designing, developing, and optimizing smart contracts and the underlying infrastructure powering 1inch.
The engineering team values secure execution at scale, open-source excellence, and thoughtful use of AI-powered tools.
Key Skills for This Role
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About 1inch
1inch is a DeFi ecosystem whose products help users and builders trade, hold, and track digital assets.
1inch protocols and APIs provide core infrastructure across the DeFi industry and beyond.
Mission
The role contributes to designing, developing, and optimizing smart contracts and the underlying infrastructure powering 1inch.
The engineering team values secure execution at scale, open-source excellence, and thoughtful use of AI-powered tools.
What You’ll Do
- Design and optimize blockchain architectures with a focus on scalability, security, and performance.
- Develop, integrate, and maintain smart contracts across decentralized protocols and infrastructure components.
- Conduct technical research and build proofs of concept for new DeFi and blockchain innovations.
- Design and improve cross-chain interoperability solutions, including bridging and atomic swap mechanisms.
- Optimize smart contract execution efficiency with a focus on gas consumption and low-latency performance.
- Collaborate with internal and external security auditors to identify vulnerabilities and strengthen protocol security.
- Lead code reviews and contribute to engineering best practices, CI/CD workflows, and development standards.
- Mentor junior and mid-level engineers and contribute to a collaborative engineering culture.
Who You Are
- At least 7 years of professional software engineering experience, including at least 3 years focused on blockchain development.
- Deep expertise in Ethereum and EVM ecosystems, including Solidity, Yul, and decentralized application architecture.
- Strong experience building and deploying smart contracts in production environments.
- Hands-on experience with Layer 2 scaling solutions and cross-chain infrastructure.
- Proven ability to drive architectural decisions and lead complex technical initiatives from design to deployment.
- Strong understanding of smart contract security principles, auditing processes, and vulnerability mitigation.
- Experience working in fast-paced, high-growth engineering environments.
- Strong problem-solving skills with a proactive, ownership-driven mindset.
Nice to Haves
- Experience contributing to open-source blockchain or DeFi projects.
- Familiarity with zero-knowledge technologies and rollup architectures.
- Experience building high-performance distributed systems or low-latency infrastructure.
- Understanding of DeFi protocols, liquidity aggregation, or on-chain trading systems.
- Knowledge of Web3 developer tooling and blockchain infrastructure automation.
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