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Nexus Labs - Smart Contract Engineer

deCircle · Zürich

Zürich · RemoteFull-TimePosted Jul 13, 2026

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Job description

Enabling Verifiable Computing

The Nexus Project is a scientific and engineering effort bringing truth to the field of computation. We’re enabling bringing to life a new form of compute: verifiable computation, powered by open science and open-source software so it can benefit everyone. Our work aims to bring to life decades of advancements in zero-knowledge cryptography, achieved by many scientists, engineers, and mathematicians, into a single software system.

Nexus raised $25M in Series A funding, co-led by Lightspeed and Pantera, with participation from Dragonfly, SV Angel and more.

Our team consists of some of the world's top cryptographers, mathematicians, and engineers, all working together with one goal: to unite the world's computers and prove humanity's computations.

Job Overview

Nexus is seeking a Senior Smart Contract Engineer to join our core engineering team. You will play a critical role in designing, developing, and deploying secure and scalable smart contracts that power core functionalities of our innovative decentralized platform. Your expertise in Solidity and blockchain technology will be instrumental in shaping the future of secure and transparent applications within the Nexus ecosystem

Responsibilities

Design, develop, and audit secure and efficient smart contracts using Solidity

Implement best practices for smart contract security, including unit testing, code reviews, and vulnerability assessments

Automate smart contract deployment, testing, and ongoing maintenance

Stay up-to-date with the latest advancements in blockchain technology, Ethereum Virtual Machine (EVM) concepts, and layer 2 scaling solutions

Requirements:

Bachelor’s in Computer Science or a related field

Deep understanding of blockchain technology and consensus mechanisms

Proven track record of shipping secure and well-tested smart contracts on Ethereum or compatible blockchains

Expert-level knowledge of Solidity language features, best practices, and security considerations

Strong problem-solving and analytical skills with a passion for innovation and building impactful decentralized applications

Bonus Points

Advanced degree in a technical field

Familiarity with formal verification tools for smart contracts.

Experience with layer 2 scaling solutions (i.e. Optimism, Polygon)

Contributions to open-source smart contract libraries or frameworks

Strong understanding of web3 development tools and frameworks

Benefits

Competitive salary and equity compensation

Dynamic startup culture where creativity is highly encouraged and where autonomy and meritocracy are highly valued

Opportunity to join a talented team at the forefront of the next generation of computing

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