We are looking for an enthusiastic, self-motivated, Senior Backend Engineer to help us build the next generation of decentralised trading protocols. As a dedicated backend engineer, you will gain ownership of our existing backend services and influence the creation, design, and execution of future features and products. You will work on technically challenging aspects of our off-chain services and our developer-facing APIs and help ensure the delivery of reliable and performant features to improve CoW Protocol.

Join the Base team as a Senior Fullstack Engineer with emphasis in frontend onchain engineering, enabling and accelerating Base's success. You’ll work across all system components to enable the next generation of onchain products. Responsibilities include building and maintaining frontend web applications, open-sourcing web apps/libraries, and managing open source contributions. You'll assist Coinbase teams in building onchain products and build key components of the OP Stack.

Sei Labs is looking for a Solidity / Smart Contracts Engineer to help shape the future of Web3 by building innovative, high-impact applications across the Sei Blockchain. You’ll work with a team at the forefront of blockchain technology, collaborating closely with our ecosystem partners to develop cutting-edge dApps spanning diverse Web3 domains. This is a unique opportunity to push the boundaries of what's possible in decentralized technology.

As Senior Solutions Engineer, spearhead large technical projects that leverage the new EVM-compatible blockchain features of the Polkadot runtime. Develop and maintain robust blockchain client API specifications, plan and implement integration tools, and oversee their upkeep. Provide comprehensive technical support to both internal and external stakeholders.

Write production-level code in Solidity and Typescript, gather requirements from Engineering Partners and other key stakeholders to implement changes to core primitives, and collaborate with third-party Smart Contract Auditors to ensure the quality assurance of proposed changes. You will work on releases end-to-end from specifications, to design, ship and maintain.