Careers
Join Us in Shaping the Future of Programmatic Advertising
At One Tech Group, we build cutting-edge technology solutions for Digital Out-of-Home (DOOH) & Retail Media. Be part of an innovative team that drives the next generation of programmatic advertising.
What You Can Expect
Innovation, collaboration, and flexibility are part of our DNA. Here’s what you can look forward to when joining our team.
Innovation First
Agile Environment
Flexible
Work
Career
Growth
Team
Culture
Join a diverse, open-minded team where collaboration, knowledge-sharing, and mutual respect define our everyday culture. We work hard, celebrate our wins, and grow together. Regular company events, sports activities, and creative office spaces ensure there’s always room for inspiration, connection, and fun.
Extras
We believe that great work thrives on great conditions. We offer flexible working hours, part-time options, and remote-friendly setups. Choose your preferred devices and take advantage of extras like job ticket, job bike, employee discounts and meal subsidies.
Current Opportunities
We are looking for talented individuals who want to drive the future of digital media with us.
Accounting & Commercial Administration (m/f/d) – Düsseldorf
Your Role
You own the day-to-day accounting at our Düsseldorf office — from daily bookings to closing preparation. You’ll work closely with our Finance lead in Düsseldorf and the operational teams on site. This is a part-time role of approx. 30 hours per week, based in our Düsseldorf office.
What you’ll be doing:
- Financial accounting: You independently manage the ongoing financial accounting for the Düsseldorf location.
- Accounts receivable & payable: Invoice verification, account assignment, and document management are in your hands.
- Open items & dunning: You monitor and resolve open items, post incoming payments, and run the dunning process.
- Bank accounting: You handle ongoing bank accounting and reconcile bank accounts.
- VAT: You prepare the advance VAT returns.
- Closings: You prepare monthly and annual financial statements together with our tax advisor.
- Billing: You support client and agency billing, including credit notes and corrections.
- Expenses & travel costs: You review and process expense and travel cost reports.
- Commercial administration: Contract and document filing, acting as the interface to service providers, and supporting HR and office topics at the Düsseldorf location.
- Reporting: You maintain and prepare analyses and reports.
What You Bring
- Education: You’ve completed a commercial apprenticeship, ideally with further qualification as a financial accountant or tax clerk.
- Experience: You bring several years of professional experience in financial accounting.
- Software: You’re confident with common accounting software (e.g. DATEV, Lexware Office, sevDesk) as well as MS Office / Google Workspace.
- Work style: You work in a structured, careful, and independent way — and keep track even when several topics run in parallel.
- Discretion: You handle sensitive financial and personnel data with absolute reliability.
- Process mindset: You enjoy not just running processes, but making them cleaner and simpler.
- Language skills: You’re fluent in German, written and spoken; English is a plus.
Didn’t Find the Right Role? Apply Anyway!
We’re always on the lookout for talented, curious minds — even if there’s no open position that matches your profile right now.
If you’re passionate about digital media, technology, and shaping the future of programmatic advertising across DOOH, Retail Media, and In-Store environments, we’d love to hear from you.
Tell us what you’re great at, what drives you, and how you want to contribute.
Let’s explore what we can build together.
Our Hiring Process
Online Application
Screening & First Contact
Team Interview
Expert Interview or On-site Meeting
Offer & Onboarding
Apply Now
We’re excited that you’re interested in joining One Tech Group!
We’re looking forward to learning more about you and what drives your passion for tech, media, and innovation.




