Clickhouse
Langfuse - Senior Backend Engineer (US-East)
New York, Remote. Posted 29 days ago
The role
You will own and optimize the ingestion pipeline and ClickHouse data models to make Langfuse fast and affordable at scale. You will build backend abstractions, operate Langfuse Cloud, and support deployments from Docker Compose to Helm charts.
What you will do
- Own and optimize the ingestion pipeline
- Design schemas, optimize merge strategies, and tune batch inserts in ClickHouse
- Write and review analytical queries for dashboards and the UI
- Build infrastructure-heavy features like LLM-as-a-Judge and alerting at scale
- Run load tests against production data to validate performance
- Operate Langfuse Cloud across multiple production environments
- Support self-hosting from Docker Compose to Helm chart deployment
Required qualifications
- Strong backend engineer with interest in database internals, query optimization, and distributed systems
- Experience with analytical databases, data pipelines, or high-throughput event processing
- Comfortable reading and writing TypeScript and SQL
- Interest in open source software
- Ability to thrive in a small, accountable team
Nice to have
- ClickHouse experience
- Experience with other OLAP databases
- Experience with observability infrastructure
- Former founder
- Background in building data-intensive systems at scale
- CS or quantitative degree
Benefits
- Flexible work environment
- Employer contributions towards healthcare
- Stock options
- Flexible time off in the US
- Generous entitlement in other countries
- USD$500 Home office setup for remote employees
- Global Gatherings and company-wide offsites
About the company
Langfuse is part of ClickHouse. Langfuse ingests terabytes of AI tracing data per day and ships everything as open source.