Senior Solidity Developer

Location: Remote & Sofia

About This Role

hack's Sofia office is expanding and seeking an enthusiastic developer eager to deliver quality code. You'll collaborate with experienced development teams on cutting-edge DeFi and NFT projects, working at the forefront of blockchain innovation.

Key Responsibilities

• Develop new product features and applications within an Agile environment
• Collaborate with expert developers to build blockchain-based decentralized applications
• Create smart contracts and oversee blockchain integration performance
• Establish and maintain development, testing, and production environments

Required Skills & Experience

• Minimum 5+ years of professional smart contract development with Solidity
• Proven track record with production-deployed smart contracts
• Proficiency in development tools like Hardhat, Truffle, or Foundry
• Expert-level expertise in at least one web stack (JavaScript preferred)
• Strong understanding of testing, troubleshooting, and distributed computing
• Fluent written and spoken English

Bonus Qualifications

• Experience with other smart contract languages
• Management background
• Remote team collaboration experience
• Open source contributions

What We Offer

• Work on impactful products with global reach
• Early-stage opportunity to influence product vision
• Multi-blockchain commercial experience (Ethereum, Polkadot, Polygon, BSC)
• Transparent, open-minded company culture
• Flexible hours and remote work options
• Generous time-off policy
• Professional development opportunities
• Conference attendance and travel
• Sports club membership
• Team events and social activities