# Software Development Engineer 3 at Locus

- Company: Locus
- What the company does: Give your AI agent one account for thousands of paid APIs and data sources, billed per call with no separate subscriptions or keys. Backed by Y Combinator and Techstars.
- Company website: https://paywithlocus.com
- Type: Startups (AI role)
- Level: Mid level
- Location: Remote (US)
- Work setup: Remote
- Posted: 2026-09-28
- Apply by: 2026-11-12
- Apply: https://locus.freshteam.com/jobs/QBdFZljpx03q/software-development-engineer-3
- Page: https://www.1752.vc/careers/jobs/locus-software-development-engineer-3/

## About the role

You own the backend end to end. Design doc to deployment. Production to on-call. Here's what that looks like day to day: Architect and ship backend systems that run in production at enterprise scale.

## What they're looking for

- Must-Haves
- 5+ years building production backend systems SaaS or product environments preferred
- Strong fundamentals in distributed systems, concurrency, reliability, and scalability
- Deep experience with Java, Spring / Spring Boot preferred
- Proven track record designing and building REST APIs and microservices
- Working knowledge across the stack: relational + NoSQL databases, messaging (Kafka/RabbitMQ), caching (Redis/Memcached)