Senior web3 Solidity Engineer

At Improbable, we believe that the next revolution in entertainment and society will come from massive virtual worlds. They will create new economies and opportunities globally, changing not just how we play, but how we work and relate to each other. That’s why we’ve made it our mission to build the next generation of technologies for online multi-user games and simulations. At Improbable, you are surrounded by people who want to improve everything and everyone around them, and who compel you to improve yourself. We’re motivated by the fulfilment of solving hard problems to achieve something profound and transformative.

Improbable is a Venture Builder. We are working with leaders to create businesses in AI transformation, the metaverse and web3. We both create businesses from scratch and invest in existing businesses. Our central services teams work with ventures to help them achieve success; including early stage prototyping and initial product development where this role sits.

Your Mission

As a Principal Web3 Solidity Engineer at Improbable, you will work with web3 Ventures to help them get to market faster. You will collaborate with their leadership team to design, prototype, and launch initial versions of their dApps. This is a hands-on, strategic role where you will work closely with executives, from identifying customer problems to shipping real dApps used in the community.

What You’ll Be Doing

• Architect, build, launch, and maintain dApps — from concept to community usage
• Develop on-chain logic in smart contracts, connecting them to web front-ends for crypto natives and novices
• Work with business leads to define product roadmaps, and help set the vision and strategy for the venture
• Provide product feedback to the Somnia Blockchain development team

Why You’re Made For This

We seek an experienced Web3 Engineer with expertise in EVM-based smart contracts using Solidity, Web3 JS/TS libraries for contract interactions, and experience with The Graph.

• Shipped multiple production-grade dApps built with Solidity
• Strong hands-on skills with the blockchain development framework Foundry
• Experience developing web apps with TypeScript (preferably React, Next.js) and using wagmi hooks for smart contract integrations
• Deep understanding of blockchain architecture, token standards (ERC-20, ERC-721, ERC-1155), and non-standard tokens (e.g., USDC)
• Knowledge of Solidity best practices and common security vulnerabilities
• Enjoy solving complex problems and working across disciplines
• Passionate about the web3 community

Optional Skills

Additional helpful experience includes:

• Using The Graph protocol to create Subgraphs or designing smart contracts for optimal indexability
• Experience in DeFi protocols like UniswapV2/V3 or AAVE
• Familiarity with Solidity fuzz testing, Slither, Mithril
• Experience with Hardhat testing framework

We welcome applicants who believe they have valuable experience, even if they do not meet all listed requirements. If you resonate with our team and mission, please apply.