Senior Solidity Engineer

Tangem is a high-tech company in the blockchain sector was founded in 2017, headquartered in Zug, Switzerland, with branches in North America, Eastern Europe, and APAC.

Tangem started with the idea of bringing digital assets to the masses using a unique combination of a smartcard-based hardware wallet and mobile applications. Company owns and promotes the technology of hardware cold-wallet for digital assets with secure and simple UX in 220 countries today. Our customers enjoy setup time within 1 minute with the ultimate security level for digital assets on their wallet. Tangem solutions offer multi-support of a growing number of thousands of tokens by a single wallet. SBI Crypto Investment Ltd., the digital asset venture investment company wholly owned by SBI Holdings Inc., has invested $15 million into Tangem in 2019 for mass adoption of blockchain technology.

Responsibilities:

• Serve as a key engineer in the development of Smart Accounts in Tangem Wallet;
• Develop and enhance Account Abstraction mechanics;
• Implement token-based gas payments;
• Design and build stop orders, limit orders, and other automated on-chain mechanisms;
• Create and maintain smart contracts primarily for EVM networks;
• Optimize contracts for security, gas efficiency, and testability; contribute to architectural decisions.

We expect:

• 4–5+ years of experience with Solidity and smart contract development;
• Strong understanding of the EVM, gas model, security best practices, and architectural patterns;
• Experience working with multi-operations and complex smart-contract systems;
• Experience developing and maintaining production-grade smart contracts used by real users.

Nice to have:

• Experience with Account Abstraction;
• Experience with non-EVM chains (Solana, TON, Sui, Aptos, etc.).

What We Offer:

• Stability, development, participation in the future unicorn's growth;
• Remote work from anywhere in the world;
• Competitive salary in EURO/USDT;
• Vacation 20 working days per year;
• Birthday presents;
• Compensation for the purchase of necessary technical devices for the work;
• Paid sick leaves.

Feel free to send you CV to Vitalii on mail.