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# OP Labs - Senior Software Engineer, Protocol (Rust)

- **Company:** deCircle
- **Location:** London, UK (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Distributed Systems, JSON, Software Tools, Information Technology, Ethereum, Solidity
- **Published:** August 8, 2026
- **Apply:** https://uk.indeed.com/viewjob?jk=11ecb6df90ec0b42

## About the Role

* (Preferred) Familiarity with op-node, kona, or Reth implementations.
 * (Preferred) Ability to read and navigate production Go code while migrating behavior into Rust.
 * (Bonus) Proficiency in Solidity for system-level smart contracts.

## Description

We are also building OP Enterprise, which enables major institutions inside and outside crypto-including Sony, Kraken, and Bitpanda-to launch and operate OP Stack chains. This creates opportunities to improve the underlying protocol while developing differentiated capabilities for enterprise chain operators. Near term projects may cover:

 * Developing kona-node and related Rust-based consensus-client infrastructure as a fully compatible and production-ready alternative to op-node
 * Implementing native account abstraction across the stack.
 * Developing premium protocol capabilities that support OP Enterprise

We are seeking mission-driven contributors who thrive on tackling complex computer science challenges while delivering high quality code with high-velocity.

What are the role responsibilities?

 * Own features through the full lifecycle: from architecture, implementation, and docs to deployment and monitoring. Working cross functionally to create maximum impact.
 * Build rigorous conformance and adversarial tests to ensure implementation compatibility.
 * Execute safe protocol upgrades and resolve complex availability/performance issues.
 * Use AI-assisted engineering tools effectively while maintaining rigorous standards for correctness, security, review, and technical ownership.

 * Professional record of shipping production software and maintainable Rust systems.
 * Deep knowledge of Ethereum (EVM, JSON-RPC, clients) and distributed systems.
 * Ability to navigate ambiguity and communicate complex design decisions effectively.


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