Senior Smart Contract Engineer

Invorious is hiring a Senior Smart Contract Engineer to design, build, and secure the on-chain logic behind our clients' Web3 products.

About Invorious

Invorious is a software agency built on one simple belief: exceptional products start with understanding people. We partner with clients to design and deliver custom software that fits their unique needs — not the other way around. Our client-centred approach means we listen first, build second, and never stop refining until the results exceed expectations.

We're a small, focused team that moves fast and cares deeply about the work. You won't be a cog in a machine — you'll shape projects, work directly with clients, and see your impact from day one.

About the Role

As a Smart Contract Engineer at Invorious, you'll work across client projects spanning DeFi, NFTs, DAOs, and custom blockchain infrastructure. You'll be responsible for writing secure, gas-efficient contracts, collaborating with frontend and backend engineers, and helping clients navigate the technical and security trade-offs of on-chain development.

Responsibilities:

• Design, develop, and deploy smart contracts in Solidity
• Write comprehensive tests and perform gas optimization
• Conduct internal security reviews and coordinate with external auditors
• Integrate contracts with frontend and backend services
• Collaborate directly with clients to translate requirements into technical solutions
• Stay current with EVM upgrades, EIPs, and emerging standards
• Contribute to internal best practices, tooling, and reusable contract libraries

Requirements:

• 2+ years of smart contract development experience
• Strong proficiency in Solidity and EVM internals
• Experience with development frameworks (Hardhat, Foundry, Truffle)
• Solid understanding of security best practices and common vulnerabilities (reentrancy, overflow, access control, etc.)
• Familiarity with testing frameworks (Mocha, Chai, Foundry tests)
• Experience deploying to mainnet and testnets
• Strong communication skills — you'll work directly with clients
• Ability to work autonomously in a small, fast-moving team

Nice to Have:

• Experience with Rust, Vyper, or Move
• Knowledge of DeFi protocols, NFTs, or DAO infrastructure
• Contributions to open-source Web3 projects
• Experience with upgradeable contracts (proxy patterns) and multi-sig setups
• Familiarity with The Graph, IPFS, or on-chain indexing solutions

What We Offer:

• Remote-friendly work environment
• Direct client exposure and real ownership of projects
• A small, ambitious team where your work is visible
• Room to grow across Web2 and Web3 projects
• Competitive compensation based on experience

Location: Remote / Sydney, NSW
Type: Full-time