London, London

Overall Rank: 30
Category: Payments
Category Rank: 16


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SumUp is a leading global financial technology company driven by the purpose of leveling the playing field for small businesses. Founded in 2012, SumUp is the financial partner for more than 4 million small merchants in over 35 markets worldwide, helping them start, run and grow their businesses.


Key Products

Card Readers

Small businesses should be able to accept payments on their terms. That’s why each SumUp card reader was created around three main qualities.

Solo Card Reader

The standalone device features a sleek, easy-to-use touchscreen that allows for a quick and seamless checkout experience.

Plus Card Reader

When they created the Plus, SumUp developed the best components to make sure it’s the most advanced card reader in its category. Equipped with NFC, Bluetooth, and an integrated Li-ion battery, the Plus sets the standard for mobile card terminals.

SumUp POS + Loyalty

The all-new SumUp Point of Sale + Loyalty is the first POS designed to help businesses streamline their workflow while growing their database. In fact, their automated marketing campaigns are built to bring new customers in and encourage previous customers to come back.

SumUp Business Account

When customers sign up for a free SumUp Business Bank Account*, they also receive a free SumUp Mastercard Debit Card.* There are no upfront costs, overdraft fees or additional charges to use the card.

Key Executives

Daniel Klein, CEO

Daniel Klein is the CEO of SumUp, where he has worked since 2011. Klein first got his start in 2005 as a Chief Executive Officer at Pure Ventures.

Aparna Ballakur, Chief People Officer

Aparna Ballakur is the Chief People Officer of SumUp. She is a global executive with extensive leadership experience in strategic and operational human resources. Ballakur has deep experience in scaling & transformation both in high-growth publicly traded & start up hi-tech companies where employees are critical to organizational success. She has expertise in emerging markets across LATAM, EMEA and APAC (including India). Previously, Ballakur was a Global Vice President of Human Resources of PayU- Naspers Group at Naspers Limited and before that a Chief People Officer at Flipkart. Earlier in her career she worked with McAfee & Network General as an HR business partner. Ballakur earned an undergraduate degree in electrical engineering from University of Mysore.

Johannes Schaback, CTO

Johannes Schaback is the CTO of SumUp, joining the company in 2021. Before joining SumUp, Schaback was a Co-Founder and CTO at Visual Meta GmbH and before that a CTO at esanum. Earlier in his career he worked with Rocket Internet GmbH as a software engineer. Schaback graduated from Shanghai Jiao Tong University with an MS in software engineering.

Ante Gulam, Chief Information Security Officer

Ante Gulam is the Chief Information Security Officer of SumUp. Gulam first got his start in 2003 as an information security associate at Faculty of Engineering in University of Rijeka. From there, he went on to Wiener Städtische Versicherung AG of Vienna Insurance Group, before eventually rising to Chief Information Security Officer at Skyscanner, his most recent position prior to joining SumUp. Gulam graduated from London School of Commerce in London, United Kingdom with a master’s degree in business administration and management and from Veleučilište u Rijeci / Polytechnic of Rijeka with an undergraduate degree in computer and information sciences.

Customer Insights

“I love how my work impacts the everyday life of our merchants. It’s inspiring to know that we’re improving people’s lives, allowing them to be successful doing what they love. I’m always excited when coming across our card readers. I often find myself talking to people on the other side of the counter about their experience using SumUp and telling them about other products. It keeps me engaged with the job and gives me purpose.” – Margarita, Engineering Manager, Global Bank


“SumUp is a place where your opinion matters. You have an impact on decision-making regardless of how long you’ve worked here. If you have something to say, you’ll be listened to. I’ve also made a lot of close friends here.” – Lea, Head of People Development, People Tech and Analytics

Company Insights

“It’s a great opportunity to work with a solid brand and a team of professionals.” – Zoe B., SumUp Affiliate