Meet the Team

Invenda Group AG is comprised of the most talented professionals in their fields, all committed to bringing vending machines and retail into the information age.

Meet the Team


Jon Brezinski

Founder & CEO

After university, Jon’s career began with a young start-up on the MIT campus in Kendall Square in Cambridge, Massachusetts which set him off on an international quest to build the perfect product. He traversed the globe professionally visiting 35+ countries while skiing every powdery slope encountered until finally permanently landing in Engelberg, Switzerland. He has held international roles in technical support, development, project management, program management, and product management working both as employee and consultant across multiple industries including telecom, oil and gas, banking, pharma, manufacturing, vending, and transportation. Along the way, he noticed a major lack of technological innovation in the vending industry and with his team of vending and software specialists, started Invenda to disrupt and revolutionize.


Srdjan Poznic

Product Development Director

Srdjan is a passionate craftsman with ten years of experience. He started his professional career in parallel with his studies at a local consulting company, but Srdjan’s passion for programming began at the age of seven, when he wrote his first program. During his career, Srdjan has worked globally on projects across varying industries including automotive, telecom, education, e-commerce, logistics, pharma, vending and transportation. Srdjan advocates education and can often be found lecturing at conferences or meet-ups.


Milena Lazarevic

Head of Testing

Milena is hardworking and uncompromising when it comes to software quality. After completing a Master’s degree in Mathematics at the University of Belgrade in 2012, she started testing various vending and transportation software products for international clients at a Novi Sad based consulting company which eventually led to an extended assignment in Philadelphia, Pennsylvania. Searching for new challenges and excitement, she joined some of her former vending colleagues at Invenda with the shared vision to change and revolutionize vending.

“Quality is never an accident; it is always the result of intelligent effort.” John Ruskin


Oleg Epelbaum

Senior Architect

Oleg Epelbaum is a senior software engineer/software architect with 18 years of experience designing and developing point of sales and cloud-based solutions. He has extensive experience within the fare collection and vending industries having designed and implemented numerous front and back-end ticket/fare vending applications. Oleg’s specialties include integration of vending peripheral devices with host systems using custom messaging and protocols. He specializes in integration of front-end vending terminals with back-end management systems.


Milan Stojanovic

Software Engineer

Upon receiving his bachelor’s degree in Information Technology, Milan started his career as a software engineer specializing in Cloud technologies. He is passionate about programming and the agile approach making him the perfect fit as the Invenda Scrum master. He keeps the team focused and ensures the concepts are fully leveraged throughout the Invenda development process. Milan is a tech enthusiast; always in pursuit of the latest and greatest in software engineering and methodology.


Petar Jerinic

Software Engineer

Petar is a software engineer specializing in embedded and cloud enterprise solutions. His knowledge and experience have been paramount to Invenda’s groundbreaking solution. He is extremely passionate about clean code and software architecture aiming to solve issues efficiently while policing the team to ensure compliance with Invenda’s best practice standards. He loves a challenge and regularly finds himself out of his comfort zone pursuing ingenuity and innovation. He has dedicated himself to ensuring Invenda’s product is, and will always be, the best in market.


Branislav Tejic

Hardware Engineer

Branislav has earned a Master’s degree in mechatronics, robotics and automation and is currently completing his PhD studies as Chair of Mechatronics, Robotics and Automation at his alma mater, the Faculty of Technical Sciences in Novi Sad. Professionally, he has worked with the design of embedded and IoT devices (hardware and software) and both industrial and nonindustrial automation. He holds 2 patents with more than 10 technical solutions. His studies and experience are a perfect match for Invenda and our mission to disrupt the vending machine industry. He has earned the title of Hardware Guru by smiling and laughing when listening to each of Jon’s seemingly crazy ideas while instantly turning them into real products.


Jonte Brzezinski

Project Manager

After completing his university studies in London, Jonte went on to work as a strategy consultant in Dubai. From there, he moved on to strategic communications in Afghanistan and Jordan managing complex programs in a range of environments, from conflict zones to emerging markets for governments, international organizations and the private sector. Jonte has acquired experience in behavioral change, media production, telecoms, marketing, F&B, MICE, tourism, real estate, and the humanitarian sector. When he is not pounding away on his laptop, he spreads his time skiing and travelling the world.


Nenad Tomov

Software Engineer

Following an unconventional path, Nenad is a “self-taught” indefatigable software engineer. Coming from traditional engineering management, he brings with a broad view of systems and organizational processes. He discovered his passion for programming during his studies and learned programming for fun. He soon found himself working as a back-end software engineer at a local IT company working with enterprise information and database systems. He remains passionate about self-development and is constantly acquiring new skills and learning new technologies.


Dejan Nikolic

QA Engineer

For Dejan, quality is never a consequence but the primary mindset and expectation of software testing. Consulting for 4 years, Dejan developed and implemented testing strategies for global government and institutional transportation vending and mobile ticketing solutions. Looking for adventure, Dejan joined the Invenda team bringing with a fresh perspective and the goal of revolutionizing the vending and retail industries.


Jasna Prcic

Office Assistant

With a Masters in Industrial Management, Jasna has held various roles in sales and administration within the Serbian IT industry. At Invenda’s Novi Sad offices, her ever smiling face greets employees and guests alike. She successfully keeps all the wheels turning, motivates the team, and lightens the mood. She has joined Invenda at a critical juncture seeking new challenges and adventure.


Marko Savic

Software Engineer

Marko is a software engineer with a MSc in Computer Science. After 5 years of developing enterprise software solutions within the electricity and gas management industry, he decided to seek out new challenges and venture into the unknown together with his Invenda teammates. He remains dedicated to teamwork and agile core values while passionate about software craftsmanship.


Charlotte Ljungquist

Managing Director Europe

During her university studies, Charlotte’s passion for exploring took her across the globe. After completing a few laps, she landed in Switzerland for 15 years where the powdery ski slopes are plenty, before returning to Sweden to start a new chapter. She has worked internationally throughout her career, holding a range of roles in the fields of marketing, logistics, procurement, business development, IT, and sales, always driven to keep learning and growing. Charlotte joined the Invenda fuelled by a desire to make the retail industry a smarter space.


Branislav Cerveny

Hardware Engineer

After finishing his studies of Mechatronics, Robotics, and Automation Engineering at the Faculty of Technical Sciences, Branislav continued his career in the field of hardware engineering. As a member of the Invenda team, he is constantly searching and working on new technical solutions working with electricity, software and new devices. His playful spirit and a great sense of humor are constantly found in those challenging moments of development and working progress. In his free time, all his energy goes to exploring nature, making wonderful barbeque while traveling and discovering new places.


Djordje Trifunovic

Hardware Technician

With his passion for machines and exploring technical devices, Djordje is working at the Invenda and at the same time finishing the Faculty of Technical Science in Novi Sad. Working as the Hardware Technical Support, he is constantly learning and evolving throughout the process of repairing and exploring devices. His steadiness in everyday work comes from yoga which he likes to train on an everyday basis.


Milenko Jurisin

QA Engineer

Before finishing university in Novi Sad, Milenko has already stepped into the software testing world. For him, software testing is a habit, with an everyday challenge. That everyday challenge grew into a strong desire to share knowledge and selflessly help people to start their path in software testing. As he likes to say, joining the Invenda team was the best thing in his QA career, because of the opportunity to work with great colleagues on building its product and constantly seeking perfection on an everyday basis.


Miljana Milanković

Office and Communications Administrator

With her curious and on the go nature, after finishing her Master's degree in the Serbian language at the Faculty of Philosophy, Miljana has started her career journey working in Public Relations and organization which led her to the IT industry. One of her peculiarities is accuracy and time effectiveness while approaching different tasks. That personal characteristic, for her, was a great match for her's existing role as an Office and Communications person in the Invenda team. She finds her work at the Invenda not only a great challenge but a constant process of improvement and learning while working and communicating with professionals.


Mladen Arbutina

Software Engineer

Mladen’s career journey started as an intern at the IT center of a large company. His knowledge acquisition began by learning from the experts, which led him to interesting projects while working and sharing the knowledge he had acquired. Soon that diverting journey brought him to Novi Sad, where he begins his freelance career by collaborating with a large number of companies creating a comprehensive software solution for accounting. During that period, he continued his self-taught learning, exploring new innovative solutions in all processes of software development. With a desire for good teamwork and hungry for new technology, he comes to Invenda where he continues to work on his personal development and at the same time dedicates his knowledge and experience by creating stable and innovative Invenda products.


Natasa Crepulja

Office Administrator

Passionate when it comes to numbers, economy, and analytics, after finishing the Faculty of Economics in Novi Sad, Natasa has experienced working in the banking system and payment eager to evolve herself in the field of economy and accounting. She is one of those meticulous people, patient and always eager to find, analyze and predict all the necessary daily functions of the system and accounting process. When it comes to her work at Invenda, she is always here to set daily payments, facilities, and accounting at the balance.


Nikola Tejic

Hardware Technician

As a member of the Hardware Technician Team, Nikola works at the Invenda mainly focused on electronics and working devices in their everyday usage. Besides his work on the constant process of gaining practical experience and knowledge while encountering various projects, he is finishing studies at the Faculty of Technical Science. Every spare moment he has he is using it to explore new devices, but also to enjoy in the most diverse games in the field of the gaming industry.


Nikolina Vujasinovic

Software Engineer

After a few years of working in the field of economics, for which she has a Bachelor’s degree, Nikolina’s career took an unexpected turn in her quest of finding a career path that would resonate more with her character and personal sense of fulfillment. That career path was in programming and fast forward a few years and a lot of hard work, courses, and internships, she is now a happy software engineer at the Invenda. She continues to advance her knowledge and experience every day, surrounded by the awesome and experienced team around her. Resourceful and flexible, able to adapt easily, she maintains a positive attitude and strong work ethic.


Goran Todorovic

Software Engineer

Goran is a software developer who has fallen in love with programming already in elementary school. In the high school, and later at the beginning of his university years, he freelanced as a developer. Currently, Goran is focused on and committed to .NET technologies, although he also likes to learn about other technologies as well. At the Invenda he is working on the development and innovative approaches in the evolution of the software.

Lead Investors & Advisors


Paul Philipp Hug

Investor & Advisor

After completing studies in Switzerland and Sweden, Paul worked as a consultant at The Boston Consulting Group. In 2009, Paul was able to take over his family’s traditional Swiss bakery through a management buy-out. After fundamental restructuring, the company is organized as a holding company with three subsidiaries for production, retail, and gastronomy. In 2017, the majority of the largest subsidiary was successfully sold to Migros.


Oliver Stahel

Investor & Advisor

Oliver is a passionate entrepreneur, a visionary, pioneer, and technology enthusiast. He is a recognized specialist in the area of IcT, telecommunications and the Internet of Things. As an entrepreneur, he has successfully established, led, and sold (exited) several companies, and as a member of the Board of Directors he helps multiple firms meet the digital challenges of the future. He regularly shuttles between his home base in Switzerland and Silicon Valley, where he seeks out the latest trends. Having gotten his entrepreneurial start at an early age, today he supports various young startups as an investor, adviser and good friend.


Mischa Palmers

Investor & Advisor

After completing studies in graphic design, Mischa co-founded the Wave advertising agency in Luzern. While he and his partners successfully grew and managed the agency, Mischa continued his studies in business management. Upon completion, Mischa has gone on to open and operate 4 retail shops in Switzerland and Germany while also managing multiple real estate ventures. Mischa has proven himself to be a true and successful entrepreneur across multiple industries.