Frontend Engineer

Langfuse; Berlin; Vor Ort; EUR 65.000 - 85.000; Vollzeit

Zusammenfassung

An innovative tech company in Berlin is seeking a Frontend Engineer to develop performant user interfaces for their LLM platform. Ideal candidates have over 3 years of frontend development experience, particularly with React and TypeScript. The role offers a competitive salary, equity, and a dynamic work culture focused on growth and collaboration.

Leistungen

Competitive salary & equity

Performance and learning focused culture

Strong customer & revenue growth

Qualifikationen

• 3+ years of experience in frontend development.
• Experience building high-performance web applications that handle large datasets.
• Strong understanding of React, TypeScript, and modern frontend tooling.
• Experience with state management and data fetching patterns.

Aufgaben

• Lead architecture improvement for the frontend application.
• Build self-serve dashboards for LLM execution insights.
• Implement advanced filtering and search interfaces.

Kenntnisse

Frontend development

React

TypeScript

Performance optimization

Data fetching patterns

Ausbildung

CS/quantitative degree

Tools

Express

Next.js

Shadcn

Prisma

tRPC

Jobbeschreibung

Overview

In short: We're hiring a Frontend Engineer to build performant, scalable user interfaces for our rapidly growing LLM engineering platform.

About Langfuse

We are building the fastest growing open-source LLM engineering platform. We help engineers and enterprises build and run LLM applications at scale. We\'ve raised $4m from Y Combinator, Lightspeed and General Catalyst. Thousands of teams and engineers use Langfuse daily. Thousands are joining every month. We\'re a small, focused team working from Berlin, Germany.

What You\'ll Do

• Past projects you would have led: Come up with an improved architecture for our frontend application
• Build self-serve dashboards to generate insights into billions of LLM executions of our users
• Creating performant table components with a focus on usability and fast rendering times
• Implementing advanced filtering and search interfaces for complex datasets

Tech Stack

You should be familiar with a majority of these but we trust that you can pick up a new language/framework quickly.

• React
• Frontend and Backend in TypeScript (including Express, Next.js, Shadcn, Prisma, tRPC)

What We\'re Looking For

• 3+ years of experience in frontend development
• Experience building high-performance web applications that handle large datasets
• Strong understanding of React, TypeScript, and modern frontend tooling
• Experience with state management and data fetching patterns
• Hard worker and thrive working in a small and accountable team
• Excited about open source software
• A CS/quantitative degree is preferred

Bonus

• Performance optimization and profiling experience
• ML/AI experience
• Impressive achievements from previous careers or side projects
• Previous startup or founding experience

Why Langfuse?

• You are joining really early
• Strong Product Market Fit!
• We are building a very small but highly capable team
• Only hiring Engineering in foreseeable future
• Strong customer & revenue growth
• Building picks and shovels for the hottest AI companies
• Building for very sophisticated technical users
• Competitive salary & equity
• Performance and learning focused culture
• Everyone on the team says: "best place I\'ve ever worked at"

How We Work

• Engineering based in Berlin ( we aim for 4-5 days in the office )
• No more than 2 short scheduled meetings per week
• Extreme ownership & autonomy how and what to work on

Links

• Our codebase: GitHub Repository
• Ben Kuhn on Impact, Agency and Taste
• Who we are & how we work