Infrastructure Engineer
LangChain, IncSan Francisco, CA, United States16 hours ago
Job type
- Full-time
Job descriptionA PR-ephemeral E2E harness that deploys a minimal LangSmith stack on Docker in CI and runs Playwright + API suites against seeded tenants. A k6 scenario that simulates multi-tenant traffic with queue / backpressure, surfacing p95 / p99 latency regressions per release. A flake-budget system that auto-quarantines flaky tests, opens issues with artifacts, and tracks "time-to-deflake". 3+ years as Infra Engineer / Software Engineer focused on Strong hands-on experience with Python (pytest) Familiarity with CI / CD (GitHub Actions preferred) and making pipelines fast, parallel, and reliable. Solid understanding of API testing , mocking / stubbing, and data setup / teardown. Comfortable defining quality bars, authoring test plans, and driving cross-team execution. Load / perf testing (k6), observability (Datadog, OpenTelemetry), and property-based testing (Hypothesis). Experience testing services running on Kubernetes and containers; comfortable with logs, events, and basic kubectl. Infra awareness : Helm / Terraform basics, Kubernetes networking, and secrets management. SQL fluency for data validation (Postgres / ClickHouse / BigQuery). Go / Node / React familiarity for targeted white-box tests and testability improvements. We offer competitive compensation that includes base salary, meaningful equity, and benefits such as health and dental coverage, flexible vacation, a 401(k) plan, and life insurance. Actual compensation will vary based on role, level, and location. For team members in the EU and UK, we provide locally competitive benefits aligned with regional norms and regulations. Annual salary range : $145,000-$195,000 USD for Senior Engineers
About LangChain
At LangChain, our mission is to make intelligent agents ubiquitous. We provide the agent engineering platform and open source frameworks developers need to ship reliable agents fast.
Our open source frameworks, LangChain and LangGraph, see over 90+ million downloads per month and help developers build agents with speed and granular control. LangSmith offers observability, evaluation, and deployment for rapid iteration, enabling teams to transform LLM systems into dependable production experiences.
LangChain is trusted by millions of developers worldwide and powers AI teams at companies like Replit, Clay, Cloudflare, Harvey, Rippling, Vanta, Workday, and more.
About the role
In person 5 days / week in San Francisco, CA or New York, NY
We're hiring a Software Engineerto join the Infra team and own developer productivity across our LangGraph Cloud / Platform and LangSmith products. You'll work closely with Infra, Backend, and Frontend to ship with confidence across Kubernetes-based services, APIs, and UI flows-and you'll help pioneer quality practices specific to LLM applications (e.g., prompt regressions and evaluation suites).
- Own test strategy end-to-end across APIs, services, UI, data, and infra (K8s / Terraform / Helm).
- Stand up ephemeral test environments in Kubernetes for PRs and release candidates; seed test data and run hermetic suites.
- Shift-left quality in CI / CD (GitHub Actions) : parallelization, caching, deterministic seeds, flake tracking, and quality gates.
- Observability for tests : rich failure artifacts (videos, logs, traces), Datadog dashboards, and actionable alerts.
- Performance & reliability : baseline SLIs / SLOs for critical paths; capacity tests and regression detection.
- Partner on incident workflows : reproduce issues, add focused regression tests, and improve runbooks / postmortems.
- Documentation : high-signal test plans, playbooks, and contributor guidelines for writing good tests.
Example projects you might own
How to be successful in this role
Bonus
Compensation & Benefits
Create a job alert for this search
Infrastructure Engineer • San Francisco, CA, United States
Related jobs
At Cloudflare, we are on a mission to help build a better Internet.Today the company runs one of the world's largest networks that powers millions of websites and other Internet properties for cust...Show moreLast updated: 16 hours ago
Pacific Fusion was founded in 2023 with the mission to power the world with abundant, affordable, clean energy.We are rapidly designing and building a pulsed magnetic fusion system to achieve net f...Show moreLast updated: 30+ days ago
Job Title : Cloud Infrastructure and Java Backend Developer.Location : [Specify location if applicable].Company Description : [Provide a brief overview of the company and its industry.Job Description : ...Show moreLast updated: 30+ days ago
At Articul8 AI, we relentlessly pursue excellence and create exceptional AI products that exceed customer expectations.We are a team of dedicated individuals who take pride in our work and strive f...Show moreLast updated: 15 hours ago
WiFi has become a critical component to every home worldwide.Amazon Company, is the first product to deliver a whole home WiFi experience using mesh technology to make sure you never have to worry ...Show moreLast updated: 15 hours ago
Founded in 2019, Glean is an innovative AI-powered knowledge management platform designed to help organizations quickly find, organize, and share information across their teams.By integrating seaml...Show moreLast updated: 30+ days ago
The Site Operations team is responsible for the delivery of data center compute and storage at Meta, enabling our family of apps and services to support a growing global community.We are seeking a ...Show moreLast updated: 16 hours ago
JOB TITLE : Infrastructure Engineer (All levels).Planning / design of water / wastewater infrastructure.Preparing deliverables : technical memoranda, reports, plans, and specifications.SALARY RANGE : $60,...Show moreLast updated: 16 hours ago
Factory is seeking seasoned Infrastructure Engineers to architect, build, and maintain our cloud infrastructure.Lead the design and implementation of robust, secure, and highly scalable cloud infra...Show moreLast updated: 30+ days ago
We exist to accelerate innovation.We do this by giving more people the opportunity to participate in the venture economy by building the financial infrastructure that makes it possible for more peo...Show moreLast updated: 16 hours ago
Quantum computing holds the promise of humanity's mastery over the natural world, but only if we can build a.PsiQuantum is on a mission to build the first real, useful quantum computers, capable of...Show moreLast updated: 30+ days ago
Dive in and do the best work of your career at DigitalOcean.Journey alongside a strong community of top talent who are relentless in their drive to build the simplest scalable cloud.If you have a g...Show moreLast updated: 16 hours ago
Infrastructure Engineer (Dublin, CA).Articul8 AI is seeking an exceptional Product / Software Engineer-Infrastructure to join us in shaping the future of Generative Artificial Intelligence (GenAI).We...Show moreLast updated: 16 hours ago
Today's Data Scientists are in pain - spending their time manually wrangling data, building models through slow trial and error, taking on painstaking rewrites for deployment, and dealing with coun...Show moreLast updated: 16 hours ago
Descript is on a mission to make audio and video content creation and editing fast, easy, and accessible to all.We are building a cutting-edge media editor incorporating real time collaboration, gr...Show moreLast updated: 15 hours ago Dive in and do the best work of your career at DigitalOcean.Journey alongside a strong community of top talent who are relentless in their drive to build the simplest scalable cloud.If you have a g...Show moreLast updated: 16 hours ago 
Who is Recruiting from Scratch : .Recruiting from Scratch is a specialized talent firm dedicated to helping companies build exceptional teams.
We partner closely with our clients to deeply understand ...Show moreLast updated: 16 hours ago
Menlo Park, CA | On-Site | Full-Time / Direct Hire.Looking for ML Infra experts (Bay Area preferred) with deep experience in CUDA, GPU optimization, VLLMs, and LLM inference-pure language focus, no v...Show moreLast updated: 30+ days ago
- Promoted
- New!
Infrastructure Deployment Engineer
Cloudflare IncSan Francisco, CA, United StatesFull-time
- Promoted
Cloud Infrastructure Engineer
Pacific FusionSan Leandro, CA, United StatesFull-time
- Promoted
Cloud Infrastructure Engineer
Info Way SolutionsFremont, CA, United StatesFull-time
- Promoted
- New!
Infrastructure Engineer - (Dublin, CA)
Articul8Dublin, CA, United StatesFull-time
- Promoted
- New!
Infrastructure Engineer - eero, eero Foundations - Cloud Systems and Infrastructure
AmazonSan Francisco, CA, United StatesFull-time
- Promoted
Cloud Infrastructure Engineer
Glean.infoSan Francisco, CA, United StatesFull-time
- Promoted
- New!
Global Infrastructure Engineer
METANewark, CA, United StatesFull-time
- Promoted
- New!
Infrastructure Engineer (All levels)
Ursus IncWalnut Creek, CA, United StatesFull-time
- Promoted
Infrastructure Engineer
FactorySan Francisco, CA, United StatesFull-time
- Promoted
- New!
Senior Infrastructure Engineer
AngelListSan Francisco, CA, United StatesFull-time
- Promoted
Software Infrastructure & Platform Engineer
PsiQuantumPalo Alto, CA, United StatesFull-time
- Promoted
- New!
Senior Infrastructure Engineer
DigitalOceanSan Francisco, CA, United StatesFull-time
- Promoted
- New!
Infrastructure Engineer (Dublin, CA)
Articul8 AIDublin, CA, United StatesFull-time
- Promoted
- New!
MTS, Infrastructure Engineer
DelphinaSan Francisco, CA, United StatesFull-time
- Promoted
- New!
Infrastructure Engineer
DescriptSan Francisco, CA, United StatesFull-time
- Promoted
- New!
Infrastructure Engineer, GPU
DigitalOceanSan Francisco, CA, United StatesFull-time
- Promoted
- New!
Senior Infrastructure Engineer
Recruiting from ScratchSan Francisco, CA, United StatesFull-time
- Promoted
ML Infrastructure Engineer
PhizenixMenlo Park, CA, United StatesFull-time +1