LLM Applications Engineer

Uncountable Engineering

München, Germany

8 days ago

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Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Experience level

Experienced

Experience required

2 years minimum

Compensation

€130,000.0 - €175,000.0

Working hours

Regular working hours

Job source

startup.jobs

Tech stack

JavaScript (Programming Language) Artificial Intelligence Data Analysis Python (Programming Language) PostgreSQL Performance Tuning Software Engineering SQL Databases TypeScript ReactJS Retrieval-Augmented Generation Flask (Web Framework)

+8 more

Large Language Models Backend Syntactically Awesome Style Sheets (SASS) Material UI Information Technology Front End Software Development React Redux Api Design

Job description

Infrastructure: Implement and optimize RAG (Retrieval-Augmented Generation) pipelines, vector databases, and prompt management systems.
Feature Development: Build intuitive, AI-driven UI components that allow scientists to query, analyze, and visualize complex experimental datasets.
Integration: Connect LLM capabilities with our core SQL databases and data analysis engines to ensure high-fidelity, grounded AI responses.

Requirements

2+ years of software development experience with a focus on full-stack web applications.
Proven experience with LLM orchestration frameworks (e.g., LangChain, LlamaIndex, or Haystack).
Proficiency in Python and JavaScript/TypeScript: Ability to work across the AI backend and the React frontend.
Solid Engineering Fundamentals: Experience with API design, asynchronous processing, and performance optimization., * B.S. in Computer Science or a related technical field.
Experience with LLM Evaluation: Knowledge of how to measure and mitigate “hallucinations” in a scientific/technical context.
Familiarity with SQL: Specifically optimizing queries that serve as the context for LLM prompts.
Product Mindset: A passion for creating “LLM-first” user experiences that feel seamless rather than bolted-on.

Our Current Stack

Backend: Flask (Python), Postgres
Frontend: React (Typescript), Redux, Sass

Benefits & conditions

Competitive Salary and Equity
Health and Dental Insurance
401K with Employer Contribution

What’s next? Learn more about Interviewing at Uncountable

Learn more about our engineering team: Check out our blog

About the company

Uncountable is seeking experienced engineers to lead the transformation of our platform into an AI-first R&D ecosystem. We are building the next generation of tools that empower scientists at Fortune 500 companies to accelerate discovery through Generative AI.

As an LLM Applications Engineer, you will be the architect of our LLM infrastructure. You won’t just be building interfaces; you will be designing the retrieval systems, agentic workflows, and data pipelines that bridge the gap between complex experimental data and actionable AI insights. Your work will directly modernize how the world’s leading researchers interact with their data.