LangChain
Senior Backend Software Engineer, Observability & Evals Platform
LangChain, San Francisco, California, United States, 94199
Overview
Backend Engineer, Observability & Evals Platform at LangChain. Join to apply for the Backend Engineer, Observability & Evals Platform role at LangChain. In this role, you will be responsible for designing and building the backend systems that power LangChain’s observability and evals platform. You will work on the core services that allow developers to monitor and evaluate their AI applications at scale. While the focus is on backend feature development, familiarity with fullstack or frontend engineering, performance tuning, and debugging production issues would be valuable. 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, perform root-cause analysis, and implement 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. What you will need
3+ 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 and ability to collaborate cross-functionally Customer-centric mindset and ownership mentality Compensation & Benefits
Competitive salary, equity & benefits package, commensurate with experience and aligned with stage of the company Annual salary range: $155,000 - $195,000 Location & Employment Type
In person 5 days/week in San Francisco, CA or New York, NY Full-time
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Backend Engineer, Observability & Evals Platform at LangChain. Join to apply for the Backend Engineer, Observability & Evals Platform role at LangChain. In this role, you will be responsible for designing and building the backend systems that power LangChain’s observability and evals platform. You will work on the core services that allow developers to monitor and evaluate their AI applications at scale. While the focus is on backend feature development, familiarity with fullstack or frontend engineering, performance tuning, and debugging production issues would be valuable. 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, perform root-cause analysis, and implement 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. What you will need
3+ 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 and ability to collaborate cross-functionally Customer-centric mindset and ownership mentality Compensation & Benefits
Competitive salary, equity & benefits package, commensurate with experience and aligned with stage of the company Annual salary range: $155,000 - $195,000 Location & Employment Type
In person 5 days/week in San Francisco, CA or New York, NY Full-time
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