We are a team of multidisciplinary experts in artificial intelligence, cryptography, and software engineering who collaborate to build solutions for unsolved problems in web3. We work on challenges such as trust-minimized micropayments, low-latency request processing, data verification, and dynamic pricing. We’ve published research at prestigious AI conferences like NeurIPS and developed novel optimization algorithms. We make web3 smarter and verifiable.
We are a core developer of The Graph protocol ($1B+ market cap), an indexing protocol for organizing and accessing the world’s data. We are also the parent company of Odos, a market-leading liquidity aggregator that supports $5B+ in monthly trading volume.
You can learn more about Semiotic Labs at semiotic.ai or by watching this presentation.
The Role
We’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.