# Software Engineer, Data Infrastructure (Staff) at Lightfield

- Company: Lightfield
- What the company does: 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.
- Company website: https://trylightfield.ai
- Type: Startups (AI role)
- Level: Senior
- Location: HQ: San Francisco
- Work setup: On-site
- Pay: $180K to $300K base salary per year (USD)
- Posted: 2026-08-03
- Apply by: 2026-10-08
- Apply: https://jobs.ashbyhq.com/lightfield/094fac84-e417-4fd7-b9fd-49d7efec8a2e
- Page: https://www.1752.vc/careers/jobs/lightfield-software-engineer-data-infrastructure-staff/

## 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

Tags: Engineering