About Lang Chain

At Lang Chain, 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.

Today, Lang Chain, Lang Graph, Lang Smith, and Agent Builder are used by teams shipping real AI products across startups and large enterprises. Millions of developers trust Lang Chain to power AI teams at companies like Replit, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, and 35% of the Fortune 500.

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. Lang Chain is a place where your contributions can shape how this technology shows up in the real world.

About the role

We’re hiring a Senior Technical Support Engineer to lead our customer support experience for highly technical users, from AI engineers to infrastructure architects. You’ll be on the front lines helping teams debug production LLM applications and agents, improve AI observability and evaluations, and unblock critical issues. You’ll also help define what world-class technical support looks like for modern AI platforms

Key Responsibilities

• Be the go-to escalation point for technical support inquiries—diagnosing issues across customer setup, Lang Chain products, and deployment issues.

• Work directly with engineering, operations, documentation, and product teams to resolve bugs, suggest patches, and advocate for customer needs.

• Partner with Deployed Engineering to support critical enterprise customers.

• Build and refine internal tooling, diagnostics, and runbooks for complex issue triage.

• Lead post-mortems for critical incidents and feed learnings back into product and documentation.

• Help refine KPIs for support health (MTTR, CSAT, bug recurrence) and drive continuous improvement.

• Improve documentation and knowledge articles to improve 1-to-many resources and provide proactive support.

• Mentor and coach other support engineers.

How to be successful in this role

• 4+ years in technical support, solutions engineering, or SRE roles in deeply technical B2B environments (e.g., observability, infrastructure, data platforms).

• Expert troubleshooting skills across APIs, SDKs, distributed systems, and cloud-native stacks.

• Programming experience with **Python.**Bonus if you have TypeScript experience.

• Hands-on knowledge of Kubernetes and Docker

• Comfort working with logs, traces, metrics in Datadog, and 3rd-party integrations (e.g., Open Telemetry, LLM providers).

• Experience supporting enterprise customers and collaborating with engineering on complex escalations.

• A bias for clarity and continuous improvement: you write succinct, helpful, and accurate responses and build a foundation for case deflection.

• High ownership — want to do what’s best for the customer and the company and are relentlessly results oriented

Compensation & Benefits

• We offer competitive compensation that includes base salary, variable compensation for relevant roles, meaningful equity, benefits, and perks. Benefits include things like medical, dental, and vision coverage, flexible vacation, a 401(k) plan, and life insurance.

• 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.

• Annual salary range: $130,000 - $195,000 USD