Senior Software Engineer (Backend)

What we're looking for:

We need a senior backend engineer with 7+ years of experience building and scaling large distributed systems, particularly in data pipeline infrastructure. You should be comfortable working autonomously in a flat, fast-moving startup environment and have a track record of designing scalable architectures that handle massive data volumes. Bonus points if you have experience with web-scale crawlers or supporting AI/ML data infrastructure for frontier labs.

What you'll do:

- Design, build, and optimize scalable data pipeline infrastructure for real-time and batch data processing at massive scale

- Take ownership of internal ingestion pipelines and data delivery systems, driving reliability and performance improvements

- Work closely with the CTO and a small, high-performing engineering team to advance Grass's distributed crawling infrastructure

- Architect and implement backend services in Golang and Python that power web-scale data collection and processing

- Lead technical design decisions around distributed systems, anti-bot strategy, data quality, and system performance

- Troubleshoot and optimize complex, live software systems operating at significant scale across Redis Clusters and Kubernetes