Senior Blockchain Engineer

The role involves creating and deploying secure smart contracts on the Ethereum blockchain using Solidity, as well as designing decentralized applications and integrating them with backend systems. Responsibilities include performing detailed code reviews, optimizing gas usage, and conducting unit and integration tests for blockchain components. Collaboration with product, security, and front-end teams is essential to ensure smooth integration and high protocol performance. Candidates should have over five years of software engineering experience, with a strong emphasis on blockchain and smart contract development. Expertise in Solidity, the Ethereum Virtual Machine, and the Ethereum ecosystem is required, along with a proven history of designing, auditing, and deploying secure smart contracts on mainnet. A solid understanding of cryptography, consensus algorithms, DeFi protocols, and Web3 security practices is also necessary. The position offers a multicultural and multilingual work environment with international projects across various sectors such as life sciences, healthcare, retail, distribution, software, and high-tech. Employees benefit from clear career progression paths, professional training, coaching, and sponsored certifications. Additional perks include knowledge exchange within global tech communities, 25 annual holidays, five sick days without medical certificates, private health insurance with family discounts, Fit Pass discounts, modern offices in Belgrade and Novi Sad, options for remote work within Serbia, and participation in corporate and social events.