Solidity Engineer

Mutual; London; Remote; GBP 60,000 - 90,000; Full time

Job summary

A leading company in the decentralized insurance sector is seeking a Smart Contract Engineer to build and enhance their on-chain risk marketplace. The role involves writing complex smart contracts and integrating various technologies to contribute to a transparent insurance model. With a focus on web3 technologies and a collaborative team environment, you will help shape the future of decentralized financial protection. Ideal candidates have a strong background in Solidity, Node.js, and a passion for DeFi.

Benefits

Flexible working hours

Competitive salary with token allocation

Qualifications

• 1 year of Solidity development experience.
• Over 3 years in backend engineering.
• A strong understanding of web3 technologies.

Responsibilities

• Writing and compiling Solidity Smart Contracts.
• Integrating with Oracles and The Graph.
• Containerizing backend services.

Skills

Solidity

Node.js

Typescript

Ethers.js

IPFS

C++

Python

JavaScript

Education

Relevant degree in Computer Science or related field

Tools

Hardhat

AWS

Job description

Nexus Mutual is an on-chain risk marketplace operated by and for members. Our mission is to build an ecosystem where anyone can protect anyone else by sharing risk. Launched in 2019, it has become the leading coverage provider within the DeFi ecosystem, with over $7.3m paid in claims to date.

The protocol offers a decentralized, transparent alternative to traditional insurance companies. Its economic incentives address the core problem of the centralized insurance industry: the principal-agent problem.

What we are looking for

We seek a Smart Contract Engineer to help us build the premier on-chain risk marketplace for DeFi, CeFi, and beyond. Learn more about us here: Twitter, Discord, Github. We need someone capable of writing and deploying complex smart contract logic, working closely with our team to design and implement product functionalities and core mechanisms that power Nexus.

Our team works with web3 technologies across the stack. The ideal candidate can work independently and collaboratively, understands Web3 primitives, is passionate about scalable applications, and is highly curious about DeFi and Crypto.

App layer: React.js, Redux, ReduxSaga, Reselect, GraphQL, Node.js, TypeScript, AssemblyScript, MongoDB

Web3: Solidity, OpenZeppelin, Chainlink oracles, Hardhat, Mocha, Chai, Tenderly, IPFS, The Graph, Ethers.js, Web3-onboard.js

Infrastructure: AWS, CircleCI, Coveralls, Kibana, Grafana, Prometheus

Areas you'll contribute to

• Writing and compiling Solidity Smart Contracts, including handling quirks and edge cases
• Deploying contracts on Ethereum testnets and scripting deployments
• Integrating with and fetching data from Oracles and The Graph
• Ensuring blockchain and web-client integration
• Containerizing backend services

• At least 1 year of Solidity development experience, familiarity with Hardhat, Node.js, Typescript, Ethers.js, IPFS
• Understanding of The Graph, Oracles, and the broader web3 stack
• Knowledge of smart contract design patterns, standards (ERCs, EIPs), and best practices; understanding issues like reentrancy, migrations, upgradeability
• Over 3 years of backend engineering experience with languages like C++, Python, JavaScript, Typescript, C#, or Java
• Strong emphasis on writing secure, clean code and testing your work

You will stand out if

• You have expertise or interest in tokenomics, game theory, L2s, and DeFi protocols
• You are self-motivated and eager to keep pace with a fast-moving startup
• You possess a low-ego attitude, are willing to learn, grow, and take ownership
• You understand layer 2 protocols, bridges, and blockchain interoperability

About us

• We are a small, dynamic, remote team passionate about our work
• We aim to pave the way for the future of insurance
• Our compensation includes a competitive fixed salary plus a generous token allocation

Why are we doing this?

Community pooling for mutual risk has historical roots but lacks scalability due to trust limitations. Blockchain and smart contracts enable us to build a system where trust is placed in the system itself, not individuals. Our goal is to create a transparent, accessible, and affordable insurance alternative, leveraging existing legal frameworks in the UK around mutuality.

We aim to provide members with simple, transparent, accessible, and affordable financial protection against risks.

More info here: https://nexusmutual.gitbook.io/docs/welcome/faq/nexus-mutual-the-basics