Celonis is the global leader in Process Intelligence and the pioneer of Process Mining technology. As one of the world’s fastest-growing enterprise SaaS companies, we are changemakers pushing the boundaries of what’s possible. We invest heavily in advanced AI capabilities—specifically our Process Intelligence Graph—to turn data insights into immediate business action. We believe there is a massive opportunity to unlock global productivity and sustainability by placing intelligence at the core of every business process. Join our mission to make processes work for people, companies, and the planet.
The Team:
Our Finance & Tax team in Madrid is a group of high-performing professionals dedicated to navigating the complexities of the global fiscal landscape. We act as strategic partners to the business, ensuring compliance while driving efficiency through data and automation. Joining this team means working in a collaborative, fast-paced environment where your analytical skills will support Celonis’ rapid global expansion. We value precision, transparency, and a proactive approach to solving financial challenge
The Role:
As a Finance & Tax Intern, you will dive deep into the world of indirect US taxation and statutory reporting. This isn't just about "crunching numbers"—it’s about understanding the financial heartbeat of a global tech leader. You will support our tax experts in everything from Direct and Indirect Tax compliance to Transfer Pricing and R&D credits. We are looking for a detail-oriented student who is eager to learn how a modern finance department operates and who isn't afraid to leverage AI and automation to optimize traditional processes
The work you’ll do:
- Compliance & Filing: Assisting with US Sales & Use Tax compliance obligations, tracking State and Local Tax (SALT) economic nexus thresholds, and coordinating state and local municipal business license renewals.
- Gross Receipts, Commercial Rent & State Taxes: Supporting compliance, data compilation, and filing requirements for US local gross receipts taxes, Ohio Commercial Activity Tax (CAT), the New York City Commercial Rent Tax (CRT), and other state/municipal indirect tax obligations.
- Property Tax & Audit Readiness & Exemption Management: Assisting with local business personal property tax filings (such as compiling data for asset listings and Form of List compliance) and US State Tax Audit readiness through comprehensive data compilation. Supporting the review, management, and validation of customer Sales Tax Exemption Certificates.
- Data Analysis: Supporting data gathering, account reconciliations, and employee/transaction analysis for US product taxability matrices, local headcount-based fees, and state tax calculations.
- Tax Systems & Automation: Contributing to the development and testing of tax automation tools, specifically focusing on Avalara Use Tax implementations and AI solutions to optimize indirect tax processes.
The qualifications you need:
- Academic Background: Graduated degree in Law, Finance, Accounting, or a related field.
- Language Skills: Mandatory fluency in English, both written and verbal, for daily collaboration with US teams.
- Technical & AI Skills: Tech-savvy with a strong command of Microsoft Excel alongside a keen interest or experience in leveraging AI tools and prompts to optimize workflows.
- Soft Skills & Communication: An analytical mindset, proactive attitude, meticulous attention to detail, and strong communication skills necessary to effectively articulate tax requirements, and coordinate across internal teams.
- Experience: Prior exposure to an accounting or tax environment is highly valued, but not required.
- Location: Based in Madrid to work one-site from our Celonis Madrid Office
What Celonis can offer you:
- Pioneer Innovation: Work with the global leader in Process Mining and the Process Intelligence Graph to shape the future of AI-driven business operations.
- Ownership from Day 1: Every full-time "Celonaut" is an owner, receiving Restricted Stock Units (RSUs) and merit-based refresh grants.
- Unrivaled Family Support: Benefit from our inclusive parental leave policy—24 weeks of fully paid leave for primary carers and 12 weeks for supporting carers, available from your first day of employment.
- Work-Life Integration: Enjoy Unlimited PTO (in applicable regions) and generous PTO globally, as well as a flexible hybrid work model that balances remote focus with vibrant office collaboration.
- Continuous Growth: Elevate your skills through our 70-20-10 learning framework, mentorship programs, and access to a dedicated learning platform.
- Holistic Well-being: Prioritize your health with subsidized Wellhub memberships, mental health counseling, and dedicated "Wellness Weeks" that prioritize work/life balance.
- Drive Sustainability: Participate in annual Impact Days, where you receive paid time off to volunteer for community and environmental causes with your local office, or virtually.
- Global Inclusion & Belonging: Find community through our Inclusion Think Tank and participate in our annual Inclusion Days, ensuring every voice is heard and valued.
- Value-Driven Impact: Join a mission-led organization where our core values—Live for Customer Value, The Best Team Wins, We Own It, and Earth Is Our Future—drive every decision.
About Us:
Celonis makes processes work — for people, companies, and the planet. Powered by process mining and AI, the Celonis Process Intelligence Platform integrates process data and business context to create a living digital twin of business operations. We enable thousands of companies worldwide to understand how their business actually runs and, together with their partners, build intelligent solutions that transform and continuously improve the way they operate — unlocking billions in value. Celonis is headquartered in Munich, Germany, and New York City, USA, with more than 20 offices worldwide.
Get familiar with the Celonis Process Intelligence Platform by watching this video.
Celonis Inclusion Statement:
At Celonis, we believe our people make us who we are and that “The Best Team Wins”. We know that the best teams are made up of people who bring different perspectives to the table. And when everyone feels included, able to speak up and knows their voice is heard - that's when creativity and innovation happen.
Your Privacy:
Any information you submit to Celonis as part of your application will be processed in accordance with Celonis’ Accessibility and Candidate Notices
By submitting this application, you confirm that you agree to the storing and processing of your personal data by Celonis as described in our Privacy Notice for the Application and Hiring Process.
Please be aware of common job offer scams, impersonators and frauds. Learn more here.
Celonis London, England Office
Celonis London Hub Office
Our London office is centrally located in Bloomsbury - an intellectual and literary hub. Here you'll enjoy the art, literature, pubs, and shopping of this eccentric area. The office provides an open and modern space, a communal breakout area, bike parking, and complimentary healthy snacks.
