Consensys is the leading blockchain and web3 software company founded by Joe Lubin, CEO of Consensys and Co-Founder of Ethereum. Since 2014, Consensys has been at the forefront of innovation, pioneering technological developments within the web3 ecosystem.

Through our product suite, including the MetaMask platform, Infura, Linea, Diligence, and our NFT toolkit Phosphor, we have become the trusted collaborator for users, creators, and developers on their path to build and belong in the world they want to see.

Whether building a dapp, an NFT collection, a portfolio, or a better future, the instinct to build is universal. Consensys inspires and champions the builder instinct in everyone by making web3 universally easy to use and develop on.

Our mission is to unlock the collaborative power of communities by making the decentralized web universally easy to access, use, and build on. 

You’ll get to work on the tools, infrastructure, and apps that scale these platforms to onboard one billion participants and 5 million developers. You’ll be constantly exposed to new concepts, ideas, and frameworks from your peers, and as you work on different projects — challenging you to stay at the top of your game. You’ll join a network of builders that reaches the edge of our ecosystem. Consensys alumni have moved on to become tech entrepreneurs, CEOs, and team leads at tech companies. 

About LineaLinea is an advanced zk-EVM system designed to enhance the scalability of Ethereum transactions through innovative proof systems. It seamlessly integrates execution, compression, and finalization circuits to validate transactions efficiently, ensuring integrity and transparency within the Ethereum ecosystem.

You’ll be constantly exposed to new concepts, ideas, and frameworks from your peers, and as you work on different projects — challenging you to stay at the top of your game.

What you’ll doWe are seeking an experienced Senior/Staff Java/Kotlin Backend Engineer to join the core engineering team of Linea. The ideal candidate will have expertise in building and maintaining server-side systems using Java/Kotlin and other related technologies, as well as experience with blockchain and layer 2. You are expected to deliver high-quality code and guarantee its correctness with a good test suite.

• Design, develop, and maintain server-side applications using Kotlin, Java, and related technologies
• Participate in all aspects of the software development process, including requirements gathering, analysis, design, implementation, and testing
• Work in an Open Source environment

Qualifications and bonus points

• Seasoned Software Engineer with good computer science fundamentals, ideally using Java or Kotlin
• Attention to detail, problem-solving, and strong analytical skills
• Experience building distributed systems is a plus
• Experience with working on open-source projects while fostering open collaboration
• Bonus if you have experience building or working with blockchain, or even execution and consensus layers
• Bonus if you stay current with new technologies and industry trends related to blockchain and layer 2

Don't meet all the requirements? Don't sweat it. We’re passionate about building a diverse team of humans and as such, if you think you've got what it takes for our chaotic-but-fun, remote-friendly, start-up environment—apply anyway, detailing your relevant transferable skills in your cover letter. While we have a pretty good idea of what we need, we're ready for you to challenge our thinking on who needs to be in this role.

In the rapidly evolving Web3 space, we believe that everyone is a builder. This expansive paradigm requires a range of backgrounds, talents, skills, and experiences to influence and shape the future. At Consensys, this diversity fuels our ability to shift control and redefine the realm of possibility. We are committed to ensuring that our technology empowers people and communities with economic and political agency through decentralized technologies. We welcome the range of perspectives and differences and celebrate them. We're excited to see how your unique skills as a builder can contribute to our vision, drive innovation, and help us shape a more inclusive Web3.

Consensys is an equal opportunity employer. All employment decisions are made without regard to race, color, national origin, ancestry, sex, gender, gender identity or expression, sexual orientation, age, genetic information, religion, disability, medical condition, pregnancy, marital status, family status, veteran status, or any other characteristic protected by law. Consensys is aware of fraudulent recruitment practices and we encourage all applicants to review our best practices to protect yourself which can be found (https://consensys.io/careers/best-practices-to-avoid-recruitment-fraud/).