Senior Backend Software Engineer, AI Observability & Evals Platform (LangSmith)

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Наша компания

At LangChain, our mission is to make intelligent agents ubiquitous. We build the foundation for agent engineering in the real world, helping developers move from prototypes to production-ready AI agents that teams can rely on. We began as widely adopted open-source tools and have grown to also offer a platform for building, evaluating, deploying, and operating agents at scale. With $125M raised at Series B from IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we’re at a stage where we’re continuing to develop new products, growth is accelerating, and all team members have meaningful impact on what we build and how we work together. LangChain is a place where your contributions can shape how this technology shows up in the real world. Today, our platform includes LangSmith (Observability, Evaluation, Deployment, Fleet, and Sandboxes), our open source frameworks (LangChain, LangGraph, and Deep Agents), and the newly launched LangSmith Engine for autonomous agent improvement. We have 100M+ monthly open source downloads, 6,000+ active LangSmith customers, and 5 of the Fortune 10 use LangSmith in production (+ 35% of the Fortune 500 overall), including teams at Klarna, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, LinkedIn, Monday.com, Nvidia, and Bridgewater. The LangSmith team owns and builds LangChain's core platform for observability, evaluation, and production reliability of AI systems. From tracing and annotation to run rules, evaluations, and beyond, this team owns LangSmith end-to-end. If you want to define what great AI observability looks like at production scale, this is where that work gets done.

Чем предстоит заниматься

In person 5 days/week in San Francisco, Boston, MA, New York

We are looking for a Senior Backend Engineer to join us. In this role you will be 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 extremely valuable

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

Наши требования

5+ years of professional experience in backend engineering working on highly complex products

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

Мы предлагаем

Annual salary range: $175,000- $240,000

We offer competitive compensation that includes base salary, variable compensation for relevant roles, meaningful equity, benefits, and perks. Actual compensation and offerings will vary based on role, level, and location. Team members in the EU, UK, and APAC receive locally competitive benefits aligned with regional norms and regulations

Benefits include medical, dental, and vision coverage, flexible vacation, a 401(k) plan, meals on in-office days in the US and more

LangChain

San Francisco, CA

ГрейдSenior

ЗанятостьПолная занятость

РегионСША

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ИсточникСкрыто

Опубликовано8 янв.

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