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Added just now
Senior Power Electronics Engineer
Space Kinetic
El Segundo, CA
As a Senior Power Electronics Engineer, you will own the design, development, integration, and testing of power electronics and electrical power systems for Space Kinetic's payload and…
Added just now
Senior Motor and Power Controls Engineer
Space Kinetic
El Segundo, CA
As a Senior Power Electronics Engineer, you will own the design, development, integration, and testing of power electronics and electrical power systems for Space Kinetic's payload and…
Added just now
Electrical Design Engineer
Space Kinetic
El Segundo, CA · Albuquerque, NM
The Electrical Design Engineer will play a critical role in designing, building, and maturing prototypes for Space Kinetic’s core technology. You will support the team in refining the…
Added 1 min ago
Cloud Systems Engineer
FIRSTLIGHT
Albany, NY · Somerville, MA · Victor, NY · Town of Rockingham, VT · Brunswick, ME · Portsmouth, NH · Manchester, NH
…are a tight-knit, customer-focused, and highly collaborative engineering team that emphasizes knowledge sharing, skill development, and technical…
Added 2 mins ago
V
Land Development Team Lead, Senior Project Manager
VHB
Charlotte, NC
- $150,000 to $180,000 USD / year
Guide the preparation of plans, specifications, engineering reports, and permit packages, ensuring accuracy and technical quality.
Added 2 mins ago
ENGINEERING SOURCER
Platform Aerospace
Hollywood, MD · Blackstone, VA
Demonstrated success sourcing highly specialized engineering and configuration management talent, including software, systems, network, electrical, mechanical, aerospace, and configuration…
Added 2 mins ago
Fast Track Summer Intern
Domtar Products
Ashdown, AR
Designing and estimating small projects under the supervision of a staff engineer or engineering manager.
Added 3 mins ago
Town Engineer
Chapin
Chapin, SC
Five (5) or more years of progressively responsible experience in municipal water/wastewater or public-works engineering, including design and construction of distribution and collection…
Added 3 mins ago
Public Works Superintendent
Chapin
Chapin, SC
…while also maintaining Town streets, rights-of-way, drainage systems, buildings, and grounds. The Public Works Superintendent works closely with the Director, Deputy Director, Town…
Added 3 mins ago
Manufacturing Engineer
LSI Industries, Inc.
Houston, TX
Perform First Article reviews and process Engineering Change Notices (ECNs) to verify and update materials, manufacturing methods, tooling, and production documentation.
Added 4 mins ago
Staff Fire Protection Engineer - Aviation & Federal (Minneapolis)
Burns & McDonnell
Minneapolis/St Paul, MN
NICET certification in Fire Alarm Systems (National Institute for Certification in Engineering Technologies) preferred. Or,
Added 4 mins ago
Senior AI Engineer
AJAIA
Remote, United States
As a Senior AI Engineer at Ajaia, you will lead the technical build of AI systems across client engagements and internal products where speed, adaptability, and execution quality matter.
Added 4 mins ago
Junior AI Engineer
AJAIA
Remote, United States
…operate across four core pillars: AI Strategy and Advisory, AI Engineering and Automation, Workforce Training and Enablement, and Custom Product…
Added 4 mins ago
AI Engineer
AJAIA
Remote, United States
…operate across four core pillars: AI Strategy and Advisory, AI Engineering and Automation, Workforce Training and Enablement, and Custom Product…
Added 5 mins ago
SC
Systems Engineer III - Design
SmartTech Contracting LLC
Remote, United States
- $78,750 to $95,812.5 USD / year
…data centers operating at national program scale. As a Master Systems Integrator (MSI), we unify controls construction (DDC, PLC, SCADA) with software engineering, optimized graphics / UI…
Added 5 mins ago
Senior Machine Learning Engineer
VODA.ai
Remote, United States
5+ years of experience running production Python systems, with strong software engineering fundamentals: testing, version control, code review, and CI/CD
Added 5 mins ago
IG
Field Service Engineer
Insight Global
Alpharetta, GA
- From $42 USD / hour
…troubleshooting, maintenance, and upgrade of critical control systems. The role will be heavily focused on PLCs and instrumentation, with engineers supporting new power generation…
Added 5 mins ago
IG
Remote Postgres/Kubernetes DBA
Insight Global
Remote, United States
- From $62 USD / hour
This engineer will bridge the gap between an established Kubernetes/platform team and PostgreSQL database engineering.
Added 5 mins ago
IG
Software Engineer
Insight Global
Overland Park, KS
- From $40 USD / hour
Insight Global is looking for an Engineer to join a client of ours in Overland Park, KS. Responsibilities include developing and maintaining software code while adhering to established…
Added 6 mins ago
Security Engineer - Networking
Shamrock Trading Corporation
Overland Park, KS
Shamrock is seeking a Network Security Engineer to join our Cyber Security team and help protect the organization's network infrastructure through the administration and support of…
Added 7 mins ago
Web Developer
CACI
Chantilly, VA · Chantilly
Bachelor's degree in Computer Science, Information Systems, Software Engineering, or a related field, or equivalent work experience.
Added 7 mins ago
Senior Mechanical Engineer
Twenty-Six Defense
Merrimack, NH
Job Summary: The Senior Mechanical Engineer researches, plans, designs, develops, analyzes and tests a variety of mechanical equipment items and systems, including chassis, hardware…
Added 7 mins ago
Sr. Process Engineer, R1 Body AI/ML
Rivian
Normal, IL
Added 7 mins ago
Senior Software Engineer
Counterpart Health
Remote, United States
We are looking for a Senior Software Engineer with expertise in full-stack engineering. In this role, you will collaborate with developers, data scientists, healthcare professionals, and…
Added 7 mins ago
PG
CQV Engineer I
PM Group
Rahway, NJ
- $75,000 to $90,000 USD / year
This is an entry-level career position and we are looking for a CQV Engineer who enjoys client interaction as well as the technical aspects of the position. This individual needs to have a…

Closed listing

LangChain

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

New York, NY, United States

$180,000 to $240,000 USD / year

This opening has closed.

The original listing is kept below for reference.

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Job details

Pay: $180,000 to $240,000 USD / year
Experience: 5+ years of professional experience in backend engineering working on highly complex products
Posting language: English
Posted: Nov 2, 2026

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Original job description

Archived listing. The details below describe a past opening.

ABOUT US

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.

ABOUT THE TEAM

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.

ABOUT THE ROLE

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.

WHAT YOU'LL 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.

WHAT YOU'LL BRING

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

Compensation

Annual salary range: $180,000- $240,000

Compensation Philosophy:

We offer competitive compensation that includes base salary, variable compensation for relevant roles, meaningful equity, benefits, and perks.

We are hiring for this role across a range of scope, and the compensation band reflects that. Your offer depends on what we learn about your impact, craft, leadership, and communication during the interview process. We will tell you early where you’re tracking and talk comp with you before offer stage. Team members in the EU, UK, and APAC receive locally competitive benefits aligned with regional norms and regulations.

BENEFITS

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

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