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.

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.

As the AI Engineering Lead, you will play a key role in architecting and building complex AI systems end-to-end. This is a hands-on leadership role for engineers with high-agency and strong technical depth. We’re looking for experienced builders with a strong product mindset and a track record of shipping complex AI systems.

If you are an experienced builder who thrives at the intersection of AI, ML, data engineering, and full-stack development - this is your opportunity to set the technical direction, mentor others, and shape how users interact with AI.

What you will be working on

• Own the architecture and design of AI systems
• Collaborate with and lead other stellar engineers across the full stack
• Build, deploy and optimize 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

We are looking for senior engineers with a strong background in SWE, AI & ML - and the capability to lead the team and grow into a founding engineer role.

Technical skillset:

• Strong experience with NLP, LLMs, Embeddings, ML, and AI-powered applications
• Experience with full-stack software engineering (React, Typescript, Python)
• Proven track record of architecting and building complex, production-grade AI systems
• Cloud & DevOps: Experience with containerization (Docker, Kubernetes), cloud infrastructure (Azure/AWS/GCP), and infrastructure as code (Terraform).

Commitment & Mindset:

• High agency & initiative: You develop new ideas and drive them in execution under minimal guidance
• Mission-driven: Mercura is part of your life’s mission, and you are willing to make sacrifices to prioritize your job over (almost) everything else
• Product mindset: You demonstrate product thinking on a deep level and solve problems end-to-end
• You’re excited to iterate quickly and build software in a fast-paced startup environment
• You want to work in-person in Munich with a higher intensity than in a 9-5 job

Leadership & Communication:

• You have experience in leading engineering teams as a senior/staff/lead engineer
• You have the potential to grow into the founding engineer role
• You’re one of the strongest engineers in the team and make everyone else better
• Everyone can come to you for advice on how to fix their hardest problems
• Clients respect your presence & technical expertise

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
• Real shares in our company with the most favorable tax treatment - no VSOP/ESOP
• Access to any AI or productivity tools you need

The target total compensation (cash+bonus+equity) for this position is €100,000-€300,000 annually. Actual offers and compensation are based on specific job duties, experience, performance, total rewards structure, and other considerations.

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