Senior Protocol Engineer - Arkiv

As a Senior Protocol Engineer at Golem Network, you will work on Arkiv, a blockchain with queryable storage built in. You'll develop the core technology that makes Arkiv unique: the reth-based execution client, the queryable storage layer, and the smart contracts that power the network. This is a hands-on technical role where you write code daily, debug hard problems, and own significant pieces of the architecture.

What you'll do

• Develop the DB Node, a reth-based execution client with database as queryable storage
• Build and optimize the storage layer, including query optimization, TTL semantics, data pruning, and performance tuning
• Write smart contracts for bridge contracts, gas reimbursement, and account abstraction as needed
• Design and implement unit tests, integration tests, and performance engineering across the system
• Write protocol specifications and API documentation for features you build
• Review code across the protocol codebase to maintain quality standards

What you bring

• Strong production experience with Rust, comfortable with ownership, lifetimes, async, and zero-cost abstractions
• Deep foundation in data structures and algorithms, with the ability to reason about complexity, memory layout, and throughput
• Experience building demanding, efficient systems with proficiency in concurrency, memory management, and performance profiling
• Ideally, experience designing database systems, storage engines, query engines, or high-throughput data infrastructure
• Understanding of blockchain fundamentals including consensus, execution, and state management
• A testing mindset, writing tests that enable confident refactoring

Nice to have

• Contributions to reth or other Ethereum clients
• Experience designing or building database and storage systems from the ground up
• Open source contributions in relevant projects
• Solidity reading proficiency

What we offer

• Remote-first work, must be based within CET +/- 3 timezones
• Competitive salary, commensurate with experience
• Full-time position

About Golem Network

Golem Network is building Arkiv, a blockchain with queryable storage built in. Arkiv enables SQL-like queries against on-chain data without external indexing, solving a fundamental problem in how developers interact with blockchain data.