CS and Forward Deployed Engineering Super Day
The Super Day is a full onsite day in our office where we work together with you on real problems you might tackle in your future role at Langfuse. The goal is to simulate working together for a day—a trial run for both sides to determine whether we enjoy collaborating, coding, and problem-solving together. Here is an overview on how we work as a team.
- Start time: 10:30 AM
- Location: Our office
- End time: ~5:30 PM
Preparation for the Super Day
We expect everyone participating in a Super Day to be genuinely interested in joining Langfuse and to have prepared for the day:
Everyone:
- Read the handbook from top to bottom
- Read the documentation to understand the product and how it works
CS and Forward Deployed Engineers:
- Set up Langfuse Cloud Hobby and request LLM API keys if needed
- Check out our customer and why they choose Langfuse
Take-home Design Discussion Preparation
1-2 days prior to Super Day
Expected time investment: ~2-3 hours
You’ll receive a technical challenge in PDF format.
We’ll set up a Whatsapp group where you can ask any questions about the challenge, the product context, or clarify requirements.
Once all questions are answered, you should take some time to prepare for the discussion during the Super Day. More on that below. While working on this challenge, please take notes on Langfuse. What works well, what doesn’t? What’s counterintuitive? Where is the documentation weak? The output should be a publishable Google Colab and Langfuse feedback log.
Super Day: Morning Session
10:30 AM - 11:45 AM
We’ll discuss the challenge that we sent you in advance. Imagine you’re already working at Langfuse and you want to demo what you’ve been working on. This means: you are in the driver seat, you are responsible for explaining the output to the room and answering questions. We are there to help you and provide additional context where needed.
We start the session with a 15 minutes presentation by you on the preparation and your thoughts on how you built the project.
Afterwards, we focus on customer communication, running through a few example requests to discuss how we could react. No preparation necessary.
Super Day: Feedback
11:45 AM - 12:00 PM
After the morning session, we will take a few minutes to discuss the session and provide you with feedback. We believe this is fair given the investment you’re making. In the interest of time and fairness for everyone, we may decide not to continue with the afternoon session if we don’t think we’re a good fit for each other.
Super Day: Lunch
12:00 PM - 1:00 PM
Meet the team for lunch, learn what they work on, and observe how they collaborate. Ask any questions you have.
Super Day: Afternoon Session
1:00 PM - 3:00 PM
We discuss Langfuse’s CS/FDE strategy and brainstorm ways of improving this. Here you have the chance to show how well you understand what we aim to achieve for our customers and how strategic you think about our interaction with the most important customers.
Super Day: Meet the co-founder
3:00 PM - 4:00 PM
Meet the co-founder you have not met in the process so far.
How to succeed on the Super Day
- Preparation: Prepare for the discussion by reading the documentation, understanding the product, and document feedback you have. Prepare the project outlined in the briefing and think about your presentation of it in the morning session.
- Show ownership and agency: Lead the discussion, drive decisions, and think end-to-end about impact and failure modes.
- Prioritize shipping: Cut scope intelligently, avoid perfection traps, and choose practical, “good enough” solutions.
- Stay customer-focused: Ask clarifying questions, understand the “why,” and make tradeoffs based on user value.
- Demonstrate technical depth: Explain your reasoning, dive into details, and compare tradeoffs clearly.
- Communicate with clarity: Be direct, efficient, and explicit about what works, what doesn’t, and where you’re unsure.