Software Engineer, Infrastructure

About the Company

Blockit is building an autonomous time agent that handles the full complexity of scheduling—timezones, group coordination, and in-person logistics. Backed by Sequoia, Blockit is developing a multiplayer, stateful AI agent platform that coordinates between multiple people and maintains context across conversations.

Responsibilities

• Own, operate, and evolve core data infrastructure including PostgreSQL, ClickHouse, and async processing pipelines
• Manage observability end-to-end, including metrics, logs, traces, alerting, and on-call rotations
• Design and optimize LLM infrastructure for reliability, performance, and cost
• Lead infrastructure migration decisions and execute technical transitions
• Partner with product engineers to ship features where infrastructure and product intersect
• Shape developer experience (DevX) by leveraging AI in engineering workflows and tooling
• Manage DevOps tasks including deploy pipelines, capacity planning, and infra costs

Requirements

• 4+ years of software engineering experience with a focus on backend or infrastructure
• Deep expertise with databases, including query plans and schema optimization
• Experience running production services and managing on-call rotations
• Familiarity with job queues, async processing, or event-driven systems
• Strong product sensibility and focus on user-facing metrics
• Pragmatic approach to build-vs-buy decisions
• Interest in AI-augmented developer tooling