Senior Software Engineer, Developer Experience

🔥 40 minutes ago

🏄 California – Remote

🏄 California – Remote

💵 $217.8k - $326.8k / year

⏰ Full Time

🟠 Senior

🤝 Developer Relations (DevRel)

🦅 H1B Visa Sponsor

This company has sponsored H1B visas in the past.

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Block

WebsiteLinkedInAll Job Openings

10,000+ employees

Founded 1990

💼 Consulting

📣 Marketing

💳 Fintech

Consulting • Marketing • Fintech

Block is a technology company that aims to increase access to the global economy through its various brands. Square provides commerce and financial services designed for sellers, while Cash App offers an easy platform for spending, sending, and storing money. Afterpay allows customers to manage their spending over time. Additionally, TIDAL empowers artists by providing them with tools for entrepreneurship, and Bitkey and Proto focus on bitcoin and related services. Together, these services contribute to building an open financial system accessible to everyone.

📋 Description

• Build and ship tools engineers and their agents use daily, including CLIs, desktop integrations, and interfaces for observing, unblocking, and steering autonomous agents • Own tool adoption, distribution, and support • Design and evolve agentic loops, harnesses, skills, and context for reliable engineering work • Build agent workflows for framework upgrades, language migrations, and dependency updates • Build guardrails, tests, and automation for safe agent-authored changes • Track leading indicators of growing codebase complexity • Identify and fix root causes of development workflow friction for humans and agents • Partner with builders inside and outside engineering to understand pain points and measure adoption and impact • Set technical direction and mentor engineers on agent design, tooling, and codebase health

🎯 Requirements

• Shipped developer tooling at scale, such as CLIs, desktop integrations, configuration management, or internal platforms • Built agent workflows that completed work normally taking a team weeks • Deep understanding of agentic loops, including tool use, context management, verification, and failure handling • Deep experience with application or platform frameworks, including upgrading and managing their evolution • Track record leading migrations or large refactors from planning through rollout • Significant experience working in large, complex codebases: typically 10+ years for Staff or 7+ years for Senior • Strong communication skills and ability to build trust by owning work outcomes • Experience with harness engineering or context engineering is nice to have • Experience with agent observability, such as OpenTelemetry, is nice to have • Experience distributing internal tools and measuring adoption is nice to have • Background in developer productivity metrics, test infrastructure, or CI/CD is nice to have • Open source contributions to developer tooling or agent frameworks are nice to have

🏖️ Benefits

• Remote work • Medical insurance • Flexible time off • Retirement savings plans • Modern family planning

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