Uncountable
LLM Applications Engineer
$125K–$160K
New York, San Francisco, Munich or London · Hybrid · Full-time · Posted Jan 19, 2026
- Experience
- 2+ years of software development experience focused on full-stack web applications.
- Education
- B.S. in Computer Science or a related technical field (preferred).
About the job
Design, build, and scale LLM infrastructure and user-facing AI features for a platform that helps scientists query and analyze experimental data.
What you'll do
- Build AI-driven interfaces for querying, analyzing, and visualizing experimental datasets.
- Connect LLM capabilities to SQL databases and data analysis engines for grounded responses.
- Design retrieval systems, agentic workflows, and data pipelines for production LLM applications.
What they ask for
- 2+ years of software development experience focused on full-stack web applications.
- Experience with LLM orchestration frameworks such as LangChain, LlamaIndex, or Haystack.
- Proficiency in Python and JavaScript/TypeScript, including work across AI backends and React frontends.
- Experience with API design, asynchronous processing, and performance optimization.
Nice to have
- B.S. in Computer Science or a related technical field.
- Experience evaluating LLMs and mitigating hallucinations; familiarity with SQL query optimization is also noted.
Pay
$125K–$160K USD base salary; equity amount not stated.
Tools
LangChain, LlamaIndex, Haystack, Python, JavaScript/TypeScript, React, Flask, Postgres
AI focus
Build production LLM infrastructure and features, including retrieval systems, agentic workflows, grounded data integrations, and LLM evaluation.
Model-written summary · the original posting is authoritative