Senior Backend Engineer — AI Observability & Evals
Applied Methods Ltd
LangChain in NYC is seeking a Senior Backend Engineer to build and maintain the backend systems powering LangSmith’s observability and evals platform. You’ll work on core services for tracing, monitoring, and evaluation workflows, collaborating with frontend and product teams. Candidates should have 5+ years of backend experience, Python or Go, and proven ability to design reliable data services, optimize performance, and operate scalable databases on AWS/GCP/Azure. #J-18808-Ljbffr Applied Methods Ltd
$180k - $240k
# Senior Backend Software Engineer, AI Observability & Evals Platform (NYC)LangChain · New York, NYLocation: New York, NYSalary: $180,000- $240,000Experience: 5+ yearsFunding: $45MPosted: Oct 8, 2026LangChain is hiring a Senior Backend Software Engineer, AI Observability...SeniorWork at officeFlexible hours- LangChain is seeking a Senior Backend Engineer to build and maintain the LangSmith observability and evals platform. You will own core backend services, APIs, and data pipelines... ...to enable developers to monitor and evaluate AI applications at scale. In this role, you will...Senior
$173.48k - $213.96k
ABOUT THE ROLEWe are seeking a seasoned backend software engineer and hands-on technical lead to drive... ..., Kubernetes, automated testing, and observability tools like DataDogTrack record of... ...Next.js)Familiarity with leveraging AI tooling within modern software engineering...SeniorLocal area- ...next generation of social intelligence - an AI-native platform that helps some of the... ...'ll join a small but mighty team where engineers own systems end-to-end - not tickets. You... ...error rates, and make ingestion reliable, observable, and predictable. Design data access...Senior
- ...Senior Backend Engineer WHY THIS ROLE EXISTS Our client is building AI technology to make healthcare accessible and free for everyone. They are seeking backend... ...automation Monitoring, logging, and observability tools NICE TO HAVE Experience...Senior
- ...across asset classes with real-time data, AI, and automation. This is an... ...this role. About the Role As a Senior Rust Backend Engineer, you will work across the platform with... ...automate integration testing, improve observability, and benchmark performance. Apply...SeniorFull timeRemote workWork from home
- ...continuous load, while bringing AI-assisted approaches into production engineering. You will take responsibility for... ...What You'll Do Strengthen backend services that process high-... ...relational and analytical data stores, observability and container orchestration. ~...SeniorFull timeWork at office
$159k - $263k
...Role Summary You’ll build the backend systems that power Twenty’s... ...features. Collaborate with frontend engineers on API contracts and data... ...matter. You’ve integrated AI/ML capabilities into production... ...source projects. You’ve used observability tooling (metrics, tracing,...SeniorFull timeContract workFlexible hours$180k - $270k
...Job Description Job Description Senior Backend Engineer We are building the AI agent platform that automates financial analysis, reporting, and data... ...delivers production-ready code with clear SLAs and observability. Collaborate with product and AI teams to productionize...SeniorWork at officeImmediate start$190k - $235k
...tackling major initiatives like launching AI-driven job applications, mock... ...experience in the world. \n \n As a senior backend engineer, you’ll be responsible for leading engineering... ...maintain core infrastructure - CI/CD, observability, compute, and service frameworks -...SeniorRelocation package$173.48k - $213.96k
Backend Software Engineer And Technical LeadWe are seeking a seasoned backend software engineer and... ..., Kubernetes, automated testing, and observability tools like DataDogTrack record of owning... ...Next.js)Familiarity with leveraging AI tooling within modern software...Senior- Senior Backend Engineer, Shopping AgentsSage AI Labs · Berlin · Full-time · [Remote]Sage AI Labs is building the infrastructure that lets AI agents transact... ...production systems end to end: deploys, databases, observability, and the pager. You have been the person who got...SeniorFull timeRemote work
- Renaissance Geek seeks a senior backend engineer to own the review pipeline and the production backend. You will manage durable pipelines, integrations, data observability, and the evaluations that determine review quality. You will optimize asynchronous workflows, improve...SeniorRemote job
- Kargo is modernizing its Workflow Platform. As a Senior Engineer, you will design and build distributed services, own projects end-to-end... ...with product, data, and engineering teams to ship reliable, observable systems. Proficiency in TypeScript or Golang and experience...Senior
- Senior Backend Engineer, Agentic Workflows - Hybrid New York, United States | Posted on 12/23/2025 Job... ...that power our next generation of AI-enabled product experiences. You'll design... ...robust monitoring, alerting, and observability systems for AI pipelines and production...SeniorWork at officeRemote workRelocation3 days per week
- Overview Journey.ai is a growth-stage startup focused on building... ...held in the Denver area. Our engineering team is currently a small... ...OpenTelemetry for end-to-end observability. Some of our core tenets on the... ...4+ years of expertise in backend development) Analyzing and optimizing...SeniorFull timeFor contractorsRemote work3 days per week
- Senior Backend Software EngineerAs a Senior Backend Software Engineer on our Diagnostics team, you'll build the part of Regard that... ...across system design, observability, testing, performance, and supportModel... ...experience leveraging AI coding tools in day-to-day software...SeniorWork at officeLocal areaHome officeVisa sponsorshipRelocation package2 days per week1 day per week
- Wealth.com in New York, NY, is seeking a Senior Software Engineer to design, build, and scale our backend systems powering estate and tax planning products used... ...deliver reliable, secure software with strong observability and fast deployment cycles. #J-18808-Ljbffr Wealth...Senior
$180k - $250k
Senior Backend Engineer, Managed Services New York, New York, United States; San Francisco, California... ..., United States Who We Are Lightning AI is the company behind PyTorch... ...production inference, with security, observability, and control built in. We serve solo researchers...SeniorFor contractorsWork at officeWork from homeFlexible hours2 days per week$225k - $350k
About Hypha Hypha is an AI-native platform transforming asset management across... ...industry through three key pillars: Observability: Providing real-time visibility into... ...inefficiencies Role Overview As a Senior/Staff Backend Engineer, Applied AI at Hypha, you will own the...Senior- Close is seeking a Senior Backend Engineer for the Backend Platform, working on a Python-based stack with Flask, TaskTiger, and a robust AI tooling layer. You will design scalable APIs, improve observability, and drive production readiness across multiple teams. The role...SeniorRemote job
$160k - $195k
...build the foundation for agent engineering in the real world, helping... ...prototypes to production-ready AI agents that teams can rely on... ...platform includes LangSmith (Observability, Evaluation, Deployment,... ...Collaborate with fullstack and backend developers and UX/UI designers...Work at officeFlexible hours$160k - $240k
Senior Backend Engineer | AI Infrastructure & Distributed SystemsAll potential candidates should read through the following details of this job... ...production workloads.Improve performance, reliability, observability, and scalability.Work with engineering leadership to...Senior$48 per hour
...Role: Backend and AI Engineer Duration:6- 12 months Location: New York- (100%On-Site... ...inference and model gateways o Evaluation observability and safety tooling for autonomous... ...for a talented and experienced Senior Backend Engineer to join our growing...SeniorContract work- Senior Backend Engineer, Data & Product 1m: Fast-Growing Healthcare Tech Startup Position: Senior Backend... ...move data predictably, along with the observability (logging, error reporting, dashboards,... ..., and system design principles AI-forward development practices What is...SeniorRemote workFlexible hours
- ...Title: Senior Backend AI Engineer Location: NYC NY Phoenix AZ (Onsite) Duration: Full-time Job Description Must Have... ...infrastructure inference and model gateways Evaluation observability and safety tooling for autonomous systems Lead...SeniorFull time
$185k - $225k
...operations, and distribution. Kalepa is building AI that can perform that work.We create... ...85k - $225k USD*We are looking for smart engineers who love to code, seek challenging... ..., and DevOps engineers to build scalable backend solutions as we continue to grow. We're a...SeniorWork at officeRemote work$167k - $219k
...LearningJoin us to design and deliver AI-powered learning tools that scale across... ...relevance and low latency. We're looking for a Backend Engineer who can own this end-to-end: from data... ...drive improvements in reliability and observability.Implement zero-downtime reindexing and...SeniorWork at office2 days per week- ...roleAt Rippling, we're not just building AI features, we're building an autonomous... ...most important bet at the company.As a Senior Engineer on AI Platform, you'll own meaningful technical... ...product surfaceDesign systems that are observable, self-correcting, and capable of...SeniorWork at office3 days per week
$200k - $275k
...Senior Backend Engineer Title of Role: Senior Backend Engineer Location: New York, onsite Company Stage of Funding: Venture-Backed... ...company is focused on leveraging innovative technology and AI to enhance user experiences in the consumer space. With a mission...SeniorWork at office
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