---
title: 'Executive Assistant at Causa Prima'
canonical: 'https://feeny.ai/job/executive-assistant-causa-prima-madrid-pyey8jsm4y1s'
type: 'job'
last_seen: '2026-09-12'
---

# Executive Assistant at Causa Prima

- **Company:** Causa Prima
- **Location:** Madrid, Spain
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-09-11
- **Last confirmed live:** 2026-09-12
- **Apply:** https://jobs.ashbyhq.com/causaprima/e547f117-a090-49ee-998a-2b9e643e8ff9

## Job description

You'll keep Causa Prima running day to day. Calendars, travel, the Madrid workspace, merch, visitors, the hundred small things that make a company feel organised or chaotic depending on who's holding them. Here, that's you. We're a growing team across Madrid and Munich with leadership that travels a lot. Your job is to keep them focused on customers and product by taking everything else off their plate. Nobody will hand you a process; you build it and then keep it running. This is an operational, day-to-day role, and we're hiring someone who wants exactly that. A well-defined job, done very well, inside a team that will notice and appreciate the difference you make.

## What you'll do

- Own the founders' calendars. Three people, two time zones minimum, constant customer and investor meetings. You schedule, reschedule, protect focus time, and make sure nobody turns up to the wrong call or misses a flight because two things overlapped.
- Book and rebook travel. Flights, hotels, trains, ground transport across Europe and to the US and Middle East. Plans change the night before; you already have the alternative.
- Run the Madrid workspace. We're in a coworking today: supplies, access, guests, deliveries, the small frictions that add up. Within six months we move into our own office, and you'll handle the move and everything that comes with running it afterwards.
- Keep the team happy in tangible ways. Merch and new-joiner kits, team lunches, offsite logistics, birthdays, the coffee that people actually drink. You notice what's missing before anyone asks.
- Handle the admin that has no other owner. Supplier contact, invoices and receipts to our finance team, courier and visitor coordination, documents that need a signature or a stamp. If it's small, recurring, and keeps the company running, it lands with you.
- Automate what repeats. Everybody at Causa Prima is an engineer. That means you don't do the same task by hand twice. You'll use AI agents to draft the itinerary, triage the inbox, compare hotel options, and chase the receipt, and you'll have access to the best automation tools on the market to do it. If a workflow can run itself, you make it run itself.
- Cover the personal side too. Keeping the founders at their best is part of keeping the company running. Some of what lands on your desk is personal: a package to return, a visa renewal to chase, a Saturday table for six, a cancelled flight to rebook. Every hour you take off their plate goes back to our customers and product.

## What we're looking for

- Experience doing exactly this. Two or more years as an executive or personal assistant, ideally supporting more than one person, in an international company where the working language was English.
- English you can work in. Emails, calls with a US hotel desk, a message from a founder at 8 am. It doesn't need to be flawless. It needs to be reliable.
- Already in Madrid, with the right to work in Spain. We're not able to sponsor visas for this role.
- Calm when plans change. A cancelled flight at 22:00 is a logistics problem, not a crisis, and you've solved a few of them.
- Discretion by default. You'll see calendars, contracts, personal details and conversations that aren't yours to repeat.
- Curious about AI, already using it. You've used ChatGPT, Claude, or similar to get real work done in the last month, and you're keen to go further. We'll show you what we run on and expect you to pick it up fast.
- Working English. Spanish is a plus for dealing with local suppliers and landlords.

## Nice to have

- You've supported founders or a leadership team at a startup or scale-up.
- You've organised an office move or set up a new workspace from scratch.
- You've run team events or offsites for 20+ people end to end.

This is a wishlist, not a checklist. If the role excites you but you don't tick every box, we would encourage you to apply anyway.

## About Causa Prima

## Company Overview
- **One-liner**: Causa Prima operates an agent-to-agent network that automates invoicing, dispute resolution, and payment-term negotiations between buyers and suppliers for finance teams.
- **Entity Type**: Private (Pre-Seed)
- **Headquarters**: Madrid, Spain & Munich, Germany
- **Founded**: 2025 (implied by recent funding and hiring activity in early 2026)
- **Founders**: Maex Ament (CEO), Henrik Gebbing (COO), Philip Stanislaus (CTO)

## Core Business
- **Primary industry**: B2B Fintech / Accounts Payable & Receivable Automation
- **Target customers**: SMB and Enterprise finance teams (buyers and suppliers)
- **Mission or purpose**: To eliminate fixed payment terms (Net-30, Net-60) by enabling AI agents on both sides of a transaction to settle instantly, so money moves on the right terms at the right time automatically.

## Products & Services
- **Causa Prima Network**: A two-sided agent-to-agent network where AI agents handle invoicing, dispute resolution, and dynamic discounting. Buyers and suppliers connect on one platform, removing manual handoffs between AP and AR systems.
- **Scribo (Open Source)**: A free, AI-native e-invoicing tool compliant with EN 16931 (ZUGFeRD/XRechnung for Germany, US plain PDF). Available as an MCP server, Claude/Codex skill, CLI, HTTP API, and web app. Designed to help developers and finance teams generate compliant invoices programmatically.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (pre-seed stage)
- **Key Metric**: $10M in total funding (pre-seed round, announced June 2026)
- **Notable Investors/Partners**: Creandum (led the round), Kfund, HelloWorld, Angel Invest, plus angel investors from Qonto, Pennylane, SAP, ING, SoFi, LIDL, and DeepMind.
- **Growth Signals**: Already trusted by 3,000+ accounts; headcount grew 28.6% monthly (LinkedIn data as of mid-2026); hiring for engineering and product roles in Madrid and Munich; open-source Scribo project gaining traction (12 stars on GitHub).

## Competitive Advantages
- **Two-sided network**: Unlike competitors that automate only one side (AP or AR), Causa Prima connects both buyers and suppliers on a shared network, eliminating the gap between systems.
- **Founder credibility**: Maex Ament invented dynamic discounting and co-founded Taulia (acquired by SAP, processing $50B/quarter). Henrik Gebbing built Finoa to $10B in assets under custody. Philip Stanislaus led 600+ enterprise security audits at Oak Security.
- **Agent-native design**: The platform is built from the ground up for AI agents to negotiate in real time, not just to speed up human workflows.

## Strategic Focus
- **Current priorities**: Grow the engineering and product teams in Madrid and Munich; scale the network beyond 3,000 accounts; push toward eliminating fixed payment terms entirely by making agent-to-agent settlement the default.
- **Direction**: Move from automating existing finance processes to replacing the underlying paradigm of B2B payments (Net-30/60/90) with instant, AI-driven settlement.

## Why Work Here
- **Culture**: Described by founders as a “once-in-a-lifetime opportunity” for people who want to build high-impact infrastructure from scratch. Emphasis on entrepreneurial drive and solving a problem that software has never fully addressed.
- **Remote/Hybrid/Office**: Presence in Madrid and Munich; roles appear to be in-office or hybrid (engineering roles listed in these cities).
- **Notable perks/engineering culture**: Early-stage startup with a small team (6 employees as of mid-2026) — high ownership and direct impact. Tech stack includes TypeScript, GraphQL, PostgreSQL, Redis, Terraform, Kubernetes, and Python. Open-source contributions (Scribo) are a core part of the product strategy. Backed by top-tier VC (Creandum) with strong founder track record.

## Sources
1. [causaprima.ai](https://causaprima.ai/)
2. [jobs.ashbyhq.com](https://jobs.ashbyhq.com/causaprima)
3. [linkedin.com](https://www.linkedin.com/company/causa-prima)
4. [github.com](https://github.com/causa-prima-ai)
5. [techfundingnews.com](https://techfundingnews.com/causa-prima-10m-pre-seed-creandum-b2b-payments-ai-agents-network/)

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