Senior Backend Software Engineer, Observability & Evals Platform (LangSmith)
Senior Backend Engineer builds and optimizes services for LangSmith's observability and evaluation platform, handling high-volume AI app monitoring. Requires 5+ years experience, Python/Go proficiency, database expertise, and performance optimization skills.
About the job
What you will do:
- Design, develop, and maintain backend services and APIs to support LangSmith's tracing, monitoring, and evaluation workflows.
- Collaborate on architectural decisions to ensure systems are performant and maintainable.
- Optimize storage and query performance for high-volume observability and evaluation data.
- Ensure system reliability through strong testing, monitoring, and alerting practices.
- Troubleshoot and resolve production issues, performing root-cause analysis and implementing long-term fixes.
- Create and maintain technical documentation, including system design and API references.
- Work closely with full-stack engineers, product managers, and product designers on rolling out new features.
How to be successful:
- 5+ years of professional experience in backend engineering
- Proficiency in one or more backend languages/frameworks, ideally Python or Go
- Strong understanding of API design and building reliable data services.
- Experience with high-throughput or mission-critical systems.
- Demonstrated ability to optimize backend services for performance and reliability.
- Experience with database systems (Postgres, Redis, Clickhouse), and cloud platforms (AWS, GCP, Azure)
- Strong communication skills, with the ability to collaborate cross-functionally
- Customer centricity and ownership mentality
Compensation & Benefits
Annual salary range: $175,000-$225,000. Competitive compensation includes base salary, meaningful equity, health/dental coverage, flexible vacation, 401(k), and life insurance.
Skills
Python, Go, Postgres, Redis, ClickHouse, AWS, GCP, Azure, API Design, Kubernetes
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