LangChain · 2 months ago
Senior Full Stack Engineer, Observability & Evals Platform
San Francisco, CA
Full-time
Onsite
Senior Level
$175K/yr - $225K/yr
7+ years expLangChain is on a mission to make intelligent agents ubiquitous by providing an agent engineering platform and open source frameworks. They are seeking a Senior Full Stack Engineer to shape the technical direction of their observability and evals platform, LangSmith, while collaborating with enterprise customers and internal stakeholders.
Agentic AIArtificial Intelligence (AI)DatabaseDeveloper APIsGenerative AI
Responsibilities
Lead the technical architecture and implementation of key product features for LangSmith, working across our entire Go, Python, and Typescript stack
Collaborate closely with product and design teams to iterate on new features
Mentor and guide more junior members of the team
Drive aggressive project timelines while ensuring high engineering standards are being met
Lead by example in writing clean, maintainable, and well-tested code
Qualification
Required
7+ years of experience in software engineering working on complex platform products
Fullstack engineering experience with Go or Python on the backend and React + Typescript on the frontend
Strong understanding of database systems, particularly Postgres and Redis
Experience designing and scaling APIs, preferably in a high-performance, data-intensive application
A 'get stuff done' attitude - comfortable shipping fast and iterating based on user feedback
Strong communicator with the ability to collaborate closely with various internal stakeholders and engage directly with our top-tier customers
Strong ownership mindset
Preferred
Experience with AI/LLM-powered applications
Experience with developer tools
Experience with observability platforms
Benefits
Health and dental coverage
Flexible vacation
A 401(k) plan
Life insurance
Company
LangChain
LangChain is a platform that provides open-source frameworks and tools for engineering and deploying language model agents.
51-200 employees
H1B Sponsorship
LangChain has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (6)
Funding
Current Stage
Growth StageTotal Funding
$160MKey Investors
IVPSequoia CapitalBenchmark
2025-10-20Series B· $125M
2024-02-15Series A· $25M
2023-03-21Seed· $10M
Leadership Team
Harrison Chase
Co-Founder and CEO
Ankush Gola
Co-Founder
Recent News
2025-12-11
2025-12-05
Company data provided by crunchbase