Senior Blockchain Engineer - Backend

This Software Engineer III (Backend) role is a senior-level IC with significant ownership over the web application that customers use to interact with our product. You’ll join a true 0→1 team, helping define the product, technical foundations, and ways of working from scratch. You’ll lead by example, establishing best practices for AI-assisted development while building systems that can handle millions of events daily.

On the engineering side, we're pioneering the use of AI as a code collaborator. We need engineers who have gone beyond experimentation—who actively use Claude Code, Cursor, Codex, GitHub Copilot, or similar tools to ship production code faster while maintaining exceptional quality standards.

Responsibilities

• Lead the design, development, testing, and deployment of scalable, high-quality backend services in Go
• Drive the technical evolution of our markets and trading backend, partnering with product and other engineering teams to deliver robust, observable, and maintainable systems
• Own services and features end-to-end: spec writing → implementation → instrumentation → deployment → monitoring → iteration based on metrics
• Design and implement experimentation capabilities (feature flags, A/B tests) to validate ideas quickly and safely
• Model and manage data for markets, orders, and transactions with a focus on correctness, integrity, and auditability
• Integrate on-chain and off-chain data sources, building reliable pipelines for blockchain event ingestion and querying
• Collaborate on reliability practices including on-call participation, SLO definition, alerting, and incident response
• Conduct thorough code reviews, raising the bar on code quality, readability, and maintainability
• Leverage AI tools to accelerate development velocity while maintaining high standards for security, correctness, and performance
• Establish and document team standards for AI usage (prompt patterns, code review checklists, validation strategies)
• Contribute to a fast-paced 0→1 environment, unblocking others and taking initiative where processes are still being defined

Qualifications

• More than 4 years of experience building highly scalable, high-performance backend applications or distributed systems
• Hands-on experience building blockchain dApps or services integrating with EVM or Solana (hackathons, side projects, or production work all count)
• Experience querying and integrating blockchain data (e.g., event logs, indexing, reconciliation between on-chain and off-chain state)
• Experience with PostgreSQL - complex query optimization, indexing strategies, and schema/migration management
• Experience with event driven architecture like Kafka or PubSub
• Strong grasp of software design principles (e.g., SOLID, DRY) and testing methodologies (unit, integration, and end-to-end testing)