At Spire Labs, we’re building the future of rollup infrastructure with a bold vision: synchronous cross chain composability.
Today, rollups are siloed. Developers are forced to choose between scalability and interoperability. We think that’s a false choice.
Spire is creating a modular rollup framework that allows chains to remain sovereign while achieving cross chain synchronous composability—no trusted bridges, no brittle async calls.
We’re pioneering a new architecture where:
App-specific L3s can interoperate as smoothly as contracts on Ethereum.
Developers no longer need to choose between performance and composability.
“Imagine every rollup could synchronously compose with every other. No bridges, no delay, no fragmentation. Just fast, seamless cross-chain UX. That’s the future we’re building.”
We’re early-stage, ambitious, and backed by some of the best minds in Ethereum. Come help us build the L3 Based Appchain Stack—an open, composable future for rollups.
What You’ll Be Doing
Architect and implement key components of the Based Appchain Stack in Rust
Design low-level systems and interfaces for VMs, preconfirmations, and cross-rollup communication
Contribute to the design of shared sequencing and data availability integrations
Collaborate closely with Solidity engineers, researchers, and protocol designers
Engage with the Ethereum and rollup communities through events, conferences, and podcasts
About You
5+ years of software engineering experience, with strong focus on production grade Rust
Deep understanding of systems programming, concurrency, memory safety, and performance optimization
Experience with Ethereum or other blockchain systems (client implementations, zk tooling, rollups, etc.)
Familiarity with L2 architectures like optimistic rollups, zk-rollups, modular stacks
Bonus: contributions to open-source Rust or crypto projects, familiarity with Cairo, zkVMs, Layer Zero, Succinct etc.
Why Join Spire Labs?
Be part of a team that’s reshaping Ethereum scalability and rollup design
Work alongside top researchers and engineers in the crypto space
Enjoy a fully remote setup with flexible hours and regular international team off-sites
Unlimited vacation policy and top-tier health, dental, and vision coverage for U.S. employees
How to Apply
Send your resume, GitHub profile, and any relevant links (blog, talks, etc.) to jobs@spire.dev. We care more about your contributions and curiosity than your credentials.
