Merchant Security Expert with German and English
- Level
- Senior
- Work type
- On-site · Sofia
Not stated in the posting: salary, visa.
Open. First seen 3 October 2026.
About the role
Join our dynamic and international Merchant Security team, specializing in Risk & Fraud.
Our team spans across three continents, bringing together diverse talents from over 60 countries. We thrive on challenges and collaborate seamlessly to ensure the success of small businesses globally.
What you’ll be doing in this position:
Proactively addressing a variety of transaction-related requests from our merchants while adhering to security rules and procedures.
Acting as the voice of our internal Risk and Fraud Team by contacting merchants and verifying documents based on risk assessments.
Monitoring merchant behavior in compliance with AML and internal T&Cs rules
Utilizing decision-making abilities for reviewing customer business and adjusting payment limits
Providing support to German and English-speaking customers through various communication channels, via phone, chat or email. The role primarily involves outgoing calls with low phone volume, and each issue is handled through the most suitable channel. Inbound calls are mainly escalations from Level 1 support, which is outsourced, and 60% of the work is not client-facing
You’ll be great for this role if:
You possess excellent language skills in both German and English
Communication is your strength, and you handle customer interactions with ease and patience.
Curiosity and persistence drive you to solve issues efficiently.
Your organizational skills shine, even in stressful situations
Attention to detail is a defining characteristic.
Why you should join SumUp:
🌍 You’ll play a key role in a scale-up that in turn is part of a truly global team of 3000+ people from 60+ countries, spread across 4 continents.
🚀 You'll have the opportunity to make an impact irrespective of your job description. You'll have the space to drive your career and take ownership of projects.
🌴 You’ll receive 25 days’ paid leave, increasing with tenure, and paid vacation for certain occasions. You’d enjoy a paid 1 month Sabbatical vacation after 3 years.
📚 You’ll receive an individual learning budget and can take 10 days educational leave to expand your skillset.
🍎 You’d have monthly digital food vouchers.
You’d have monthly budget for a wide choice of benefits and discounts ranging from transport, food, learning and more (re:benefit platform) 🚌🍗💡🎁.
❤️ You'd have access to additional health insurance, life insurance and co-sponsored Multisport card 🎾.
💜 You’d enjoy funded therapy & coaching sessions with licensed psychotherapists.
👶🏼You’d enjoy a child birth/adoption bonus.
👥 You’d have access to an attractive referral program.
🚌 You’d have access to a free shuttle buses from Joliot-Curie metro station and more.
This job is on-site - Sofia
About SumUp:
At SumUp, we believe in the everyday hero – small business owners. We create powerful, easy-to-use financial solutions to help them succeed. Our diverse teams across Europe, South America, and the United States work together with a founder's mentality and a 'team-first' attitude.
SumUp is an Equal Employment Opportunity employer, promoting diversity and inclusion. We strictly prohibit harassment of any kind and ensure a healthy and safe workplace.
To apply, submit your resume directly; we do not accept unsolicited resumes from any source other than directly from a candidate.
SumUp's standard text
Job Application Tip
We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.
What this role asks for
90% of this description is written for the role. The rest is SumUp's standard text, folded away below.
Read against SumUp's other open postings on this site.
The team: Risk & Fraud HIRES STEADILY
This role is one of 3 open in Risk & Fraud. 2 were posted in the last 30 days and the oldest in July: a team that hires all year rather than one being built.
OTHER ROLES ON THIS TEAM
- Merchant Security Expert with Dutch and English posted Oct 7
- Merchant Security Expert with Italian and English posted Oct 6
From the team and dates on SumUp's own job board.
Other openings for this role
2 postings for this role in Sofia, Bulgaria since 7 March 2026, 1 still open. None has been taken down and posted again.
- 3 October 2026 – open (this posting)
- 7 March 2026 – closed
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