Lightfield connects to your email, chat and business systems and does the legal work before it reaches your team. It gathers context, applies your policies and past decisions, and presents the finished work for your approval. Backed by Y Combinator.
About the role
We're building the infrastructure foundation for a fast-growing AI product company serving thousands of customers: Our Postgres fleet serves 5B+ queries a month — roughly 2,500 QPS steady state, with sustained spikes past 25,000 QPS — and database workload more than doubled last month .
What they're looking for
- 7+ years experience
- Strong software engineering fundamentals
- Experience owning production data systems where query plans, replication lag, backfills, data freshness, schema evolution, or data correctness had real user-facing consequences
- Comfort debugging across multiple layers of the stack
- Good judgment about when to make a tactical fix and when to invest in a more durable platform or architecture change
- Product orientation: you care about how data infrastructure decisions affect customers, users, and engineering velocity
More about this role
Lightfield is reimagining CRM as a world model of a business. By learning from emails, meetings, and customer conversations, we’re building a living understanding of how a company works—so AI can help teams anticipate what comes next, make better decisions, and take action.
More than 5,000 companies have used the product since its November launch. We’ve raised more than $70M from Andreessen Horowitz, Coatue, Maverick Ventures, and Greylock to attack the biggest software category in the world. We previously built Tome, which reached more than 25 million users, and our team brings experience from Llama, Instagram, Google, and Salesforce.
We're building the infrastructure foundation for a fast-growing AI product company serving thousands of customers:
Our Postgres fleet serves 5B+ queries a month — roughly 2,500 QPS steady state, with sustained spikes past 25,000 QPS — and database workload more than doubled last month .
Redis sustains ~50,000 commands per second behind a job platform that executes 10M+ background job runs a day across ~170 queues.
We ingest tens of millions of emails and calendar events a month .
That growth creates scaling pressure across backend systems,...
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