AI Engineering Intern at Mercura (W25)
€3K - €4K EUR / monthly
AI Quote and Order Automation for Distributors & Manufacturers
Munich, BY, DE / Munich, Bavaria, DE
Internship
US citizenship/visa not required
About Mercura

Mercura automates quoting in the construction industry with AI agents. Our software frees sales teams from manual back-office tasks and lets them process requests in minutes instead of days.

We rank in the top 5% of YC’s W25 batch by revenue. After YC, we closed a 8x oversubscribed round with top-tier investors and angels.

In just 7 months since founding, we are already on track to reach €1M ARR, and we continue to grow massively.

WHY MERCURA

  • Join an exceptional team: Our team has experience from Google, Meta & Bain and studied at MIT, TUM, Harvard, CDTM & Cambridge. Your future colleagues are top-of-class graduates, scored a 795 GMAT, won Physics Olympiads, are ex-founders and BCG alumni. We hire only exceptional talent and deeply invest in your growth as your mentors and teammates - during your time with us and in your career beyond.
  • Work with the latest tech: AI is at the core of our product. As we are backed by Y Combinator, we can leverage the latest tech to push the boundaries of LLMs and ML. With us, you’ll tackle meaningful challenges and shape how users interact with AI.
  • Thrive in a high-growth, high-commitment environment: We’re growing extremely fast because we work hard and always put our customers first. Whether it’s taking calls at 4 AM or flying 12 hours for a meeting: we do whatever it takes to make our customers happy. If you excel in a fast-paced, adventurous setting and want to be part of a rocket ship from day one, Mercura is for you.
  • Build something with real-world impact: We ship code that directly helps a massive, yet overlooked manual industry run more efficiently and sustainably. With us, you can work on AI that contributes to economic growth and stability on a huge scale.
  • Build our company: As an early team member, you will have a direct, lasting impact on our culture, technology, and product. Joining us offers immense rewards: ownership, financial upside, and the unique opportunity to learn and build something extraordinary from the ground up.

ABOUT THE FOUNDERS

We are Lukas, Stefan & Sean, the co-founders of Mercura. We share a deep commitment to excellence and the discipline to pursue ambitious goals. Two of us come from non-academic families, and we all know what it means to create our own paths and overcome barriers. This experience shapes our belief in equal opportunity and fuels our dedication to social mobility.

At Mercura, we believe that the best ideas emerge when people from different backgrounds come together. That's why we hire based on ability, mindset, and values. Everyone is treated as an equal, and we live by the principle that the best idea wins.

We actively support initiatives that promote diversity and gender equity. Each year, we also commit a portion of our personal income to organizations working to expand opportunity for others.

DON'T SEE YOUR DREAM JOB?

We’re always looking for talented individuals. If no role matches your skills, send us an open application at [email protected] or connect with us via LinkedIn.

About the role
Skills: Next.js, Python, React, TypeScript, Docker, PostgreSQL, Machine Learning, Natural Language Processing

Mercura automates quoting in the construction industry with AI agents. Our software frees sales teams from manual back-office tasks and lets them process requests in minutes instead of days.

We rank in the top 5% of YC’s W25 batch by revenue. After YC, we closed a 8x oversubscribed round with top-tier investors and angels.

In just 7 months since founding, we are already on track to reach €1M ARR, and we continue to grow massively.

We’re looking for AI Engineering Interns to help us build AI systems end-to-end. This is a fast-paced, hands-on role for candidates with high agency. At Mercura, you will collaborate closely with the best engineers and gain real-world experience in building AI applications in an industrial B2B context.

If you're excited about software engineering and AI, this is your opportunity to learn, experiment, and contribute.

What you will be working on

  • Work across the full stack to build AI agents end-to-end
  • Work with embeddings and fine-tune LLMs for classification and reranking
  • Optimize algorithms for product search
  • Apply RLHF & DPO to align LLMs with human feedback
  • Build data pipelines to process large-scale unstructured data efficiently
  • Make our backend scalable, stable and efficient

What we're looking for

  • High agency and experience with building software and iterating quickly
  • Experience with NLP, LLMs, Embeddings, ML, and AI-powered applications
  • First Experience with full-stack development (TypeScript, Python, React, Next)
  • Strong problem-solving capabilities and willingness to learn new technologies
  • You’re excited to strive for excellence and build software in a fast-paced startup environment
  • You want to work in-person in Munich with more intensity than in a 9-5 job

Company Perks

  • Free team dinner (up to 4x/week)
  • UrbanSportsClub membership - join our team workouts 3x/week
  • Easy relocation to Munich — our office is located in the Werk1 Startup Incubator, where you can rent a 1-bedroom apartment right next to the office for just €750/month
  • Access to any AI or productivity tools you need
Technology

Software Stack: Typescript, Python, React, Next, Docker, Terraform, Postgres AI Stack: Vector databases, LLMs, Embeddings, observability & evals

Interview Process

Step 1: Intro call

Casual intro meeting with one of the founders to get to know each other and introduce Mercura.

Step 2: Technical interview

💡 At Mercura, we value our applicants' time. That's why we compensate you with €50 if we ask you to complete a take-home challenge.

A take-home technical challenge to showcase your skills, followed by a call to walk us through your approach, insights, and solution for the take-home exercise. The call will also include a brief algorithmic live-coding exercise.

Step 3: Personal Fit

Meet another co-founder to get a feel for our culture and working style.

Step 4: Offer

If we see a great fit, you will get an offer, including a competitive compensation package.

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