The RoleWe're looking for a
Rust Engineer who's excited about building scalable, cryptographically secure systems for web3 infrastructure. You'll work on
GraphTally, implementing performant, reliable components that enable stateless, one-way payment channels at scale. This role is ideal for someone who thrives on solving protocol design challenges and building robust, production-ready Rust code.
This role is perfect for those who thrive in a multidisciplinary team solving complex, unsolved problems through research and engineering. You'll excel here if you're excited about working on a small, agile team where your daily work drives innovation-both internally and across the web3 ecosystem. Above all, you should be passionate about delivering real value to users.
What You'll Do- Design, implement, and maintain core components of the GraphTally protocol in Rust.
- Collaborate with researchers and protocol engineers to refine and evolve the architecture.
- Optimize signature verification, message processing, and batching for high-throughput performance.
- Implement secure state transition logic, trust-minimized payment flows, and smart contract interactions.
- Work closely with smart contract engineers to ensure seamless on-chain integration (mainly on L2s like Arbitrum).
- Write clean, testable, and efficient code with a focus on security and correctness.
Contribute to technical documentation, specifications, and developer tooling to support GraphTally adoption.
- 3+ years of professional experience writing high-performance, production-quality async code in Rust.
- Experience in designing and implementing remote APIs (REST, JSON-RPC, gRPC)
- Experience in responsive microservices design and development
- Experience with databases (Postgres, Redis)
- Experience with Docker.
- Deep understanding of cryptographic primitives, especially ECDSA and digital signature schemes.
- Proficient with Rust's async/await model, leveraging futures, tokio, or async-std
- Understanding of asynchronous state machines for managing complex protocol flows
- Familiarity with zero-knowledge proofs, state/payment channels, or escrow mechanisms is a plus.
- Strong grasp of trust-minimized systems, distributed protocols, or payment rails in a web3 context.
- Experience working with Ethereum L2s (like Arbitrum, Optimism) and integrating with smart contracts.
- Proficiency with testing, benchmarking, and debugging asynchronous Rust applications in the context of web3, using tools like anvil.
- Clear communication, curiosity, and a strong sense of ownership.
Bonus Points- Familiarity with The Graph protocol or Indexer infrastructure.
- Exposure to decentralized microservice architectures or multi-agent systems.
- Prior work on gas-optimized smart contracts or cryptographic batch verification.
- Experience with zkSNARKs, RAVs, or verifiable off-chain aggregation techniques.
Why Join Semiotic Labs- Be part of a small, high-caliber team solving cutting-edge problems in decentralized infrastructure.
- Work on a deeply technical and meaningful mission that helps scale web3.
- Shape the direction of a foundational protocol used by agents and services across the ecosystem.
- Fully remote, async-friendly team with competitive compensation and token upside.
