Note: The job is a remote job and is open to candidates in USA. The hiring client is building an AI-native data visualization platform that turns raw data into publication-quality charts. The Senior Engineer will develop backend services and AI capabilities, establish evaluation infrastructure, and help shape systems that translate user data and intent into visual output.

Responsibilities

• Design and evolve our GraphQL API and the services behind it (Node.js, Postgres, S3, Docker/Kubernetes)
• Build and improve AI-powered features: chart recommendation, data fluency, narrative generation, and agentic workflows that act on user intent
• Own the eval infrastructure by defining what "good” looks like for our AI systems, build LLM-as-judge pipelines, and drive quality improvements from signal
• Work across our composer and fluency engines: the systems that translate user data and intent into visual output
• Contribute to architecture decisions: schema design, data loading and processing patterns, and pipeline orchestration
• Partner closely with frontend engineers and designers (who often work directly in the codebase) to ship full features end-to-end

Skills

• 6+ years of backend engineering experience, with strong TypeScript/Node.js fundamentals
• Hands-on experience building with LLMs: prompt engineering, structured outputs, tool use, retrieval, caching strategies, and cost/latency tradeoffs
• Experience with agentic architectures: multi-step reasoning, tool-calling agents, orchestration patterns, and the failure modes that come with them
• You think carefully about eval infrastructure, not just whether the model works today, but how you'd know if it regressed tomorrow
• You write code that's clear, well-typed, and doesn't require a comment to explain what it does
• You are comfortable moving quickly and leveraging AI assistance
• You can understand tradeoffs, particularly when it comes to moving quickly and code quality
• A genuine enthusiasm for data visualization. You find yourself opinionated about when to use a bar chart vs. a line chart, and you know why it matters
• Experience with LangSmith, LangFuse, or similar LLM observability tooling
• Familiarity with React and willingness to read and occasionally contribute to frontend code
• Prior experience in a design-adjacent or creative tools product

Benefits

• Eligible employees may receive medical, dental, and vision coverage.
• Eligible employees may participate in a company-sponsored retirement savings plan.
• Eligible employees may receive access to attorneys for legal advice and representation through legal service plans.
• If someone you refer is hired, you could be eligible for an employee referral bonus.

Company Overview