Staff Software Engineer (Blockchain)

Join Ephemera, Build the Future of Onchain Messaging

We are currently hiring a Staff level Software Engineer focused on building and maintaining XMTP.

What You’ll Be Working On:

Design and manage XMTP’s forthcoming high throughput rollup and decentralized node network.
Write and deploy XMTP smart contracts on the rollup.
Index data from the rollup and store chain history in our nodes.
Ensure strong consistency between onchain and offchain data.
Design resiliency against re-orgs in lower chains by republishing any lost transactions.

Your Experience:

Minimum of 10+ years of professional experience as a software engineer, staff level.
Extensive experience operating and maintaining an EVM compatible chain in production (L1, L2, L3).
- Have deployed and ran a chain in production, including involvement in choosing the parameters of the chain and monitoring uptime in a live system.
Experience working close to the execution or consensus layers of a blockchain.
- Have committed code to a L1/L2/L3 blockchain.
Proficiency in Solidity, with experience in shipping Solidity smart contracts to production.
- Expert-level Solidity developer with contracts that have undergone security audits.

Nice-to-Haves:

About You:

You are passionate about decentralized technology and believe in an onchain future.
You love to win and are fueled by solving hard problems.
You are self-directed, see opportunities and are inspired by challenges and helping solve them.
You have a small team mindset and are focused on where you can have the greatest impact.
You love to learn, are not afraid of changing your opinion or being wrong.

Benefits:

Competitive compensation package, Base + Equity.
Salary range between $225k-$250k base range (depending on experience + location).
Remote-first environment with semi-yearly gatherings to connect IRL.
Fully paid Medical, Dental, Vision insurance in the US.
Parental Leave.
IT Equipment and WFH setup.
Monthly Wellness and Lifestyle stipend.
Personal assistant.
Unlimited time off.

Culture:
Ephemera isn’t for those merely exploring or curious about Web3, or those needing daily direction. It’s for the committed—those devoted to decentralized technology and an onchain future, with a championship mindset, ready to win alongside the best.
Our shared belief fuels our success, and our values steer our decisions. Our culture guide is a transparent look into how we operate.

This is a different type of company. Both in how we work and what we work on. We intentionally try to keep our team small and focus on working with the best people in the world. We are looking for people who can show the incredible things they have worked on and have built and worked on similar technology before. Not because we want to limit who can work here, but because to build something as impactful as XMTP, it requires insanely specific skills and knowledge from the team working here.