cLabs is looking for a Blockchain Core Engineer to grow the Blockchain team, which is responsible for the Celo’s blockchain node. This role involves working on a go-ethereum based node with transformations that make the Celo blockchain unique (such as the consensus engine).

Our main challenges are scaling the network, improving its security and resiliency, and adding new features that can only be done at node level (such as paying for gas fees with an ERC20 token) to the Celo ecosystem.

In the Blockchain team, we collaborate with other engineering teams within cLabs. This includes other platform teams such as the Primitives team (as we constantly access smart contracts as part of our operation), and user-facing teams such as the Developer Tools teams (as a big part of our job is to make end users’ and contributors’ lives easier). We also collaborate with other teams to design and implement the right incentives for our validators and full nodes.

This is a role with wide exposure to many areas of the stack, and you’ll quickly get acquainted with all the moving parts in a modern blockchain project.

You will:

• Collaborate with teammates and design the Celo protocol
• Contribute to the Celo blockchain client (L1 and L2), making sure it works as expected
• Perform load testing and performance optimization, identifying bottlenecks and optimal parameters for healthy functioning of the chain
• Write documentation outlining the specifics of the Celo protocol

You have:

• Prior blockchain knowledge and development experience
• Golang knowledge, ideally familiar with geth / optimism / erigon or other golang-based Ethereum clients
• Distributed systems design skills and development experience
• Good debugging skills, good understanding of how to figure out why things behave in unexpected ways
• Good communication skills, both written and verbal
• Responsible attitude to work, strong work ethics

About the role

Timewave is looking for a Senior Rust Engineer to help build our flagship cross-chain products.

Responsibilities

• Engineer highly reusable and well documented CosmWasm code
• Design testing strategies, including by writing unit tests and end to end tests
• Integrate Timewave’s products with our ecosystem partners’ codebases
• Create and maintain clear documentation
• Collaborate on product specifications with other members of the product and engineering team
• Mentor junior colleagues and support their growth
• Contribute to engineering efforts across Timewave
• Support our users by helping troubleshoot technical issues

Requirements

• Bachelors or Masters in Computer Science, Engineering, or related field. Strong fundamentals in data structures, algorithms, storage, networking, and blockchains
• 6+ years of engineering experience in Rust
• Highly proficient in software development best practices such as agile processes, version control, testing, and CI/CD
• Strong communication in English
• Ability to collaborate in a remote-first work environment
• Passionate about crypto and demonstrated interest in DeFi, digital institutions, and new forms of money

Bonus

• Experience with smart contract development in CosmWasm, EVM, or SVM
• Open source contributions to the Interchain Stack

We value curiosity and non-traditional career paths. If you don’t meet all the requirements perfectly but believe you would excel on the team, we would still love to hear from you and encourage you to apply.

What we offer

• Above-market equity. We plan on raising our first venture capital round in 2025. There is still time to join us on the ground floor.
• Flexible work schedule
• Deeply self-motivated teammates who encourage you to run with your passion
• High-trust, high-agency team striving to be the world’s best collaborators
• Immaculate vibes

To Apply

Please email email with your resume and any additional information that might help us get to know you (e.g., github)

About us

About Timewave