A consultancy with no consultants. We are proud to state that 100% of our leadership comes from an operator background in entrepreneurship, the tech startup ecosystem, and leading roles in the industry.
Prior, Costas was the Chief Executive of Isobar & iProspect in Greece. He launched Isobar & iProspect in 2015 after Dentsu Aegis Network acquired his company, Mindworks.
Along with his business partner Giorgos, they started Mindworks back in 2005. From a tiny, specialised, performance marketing agency they transformed it into the fastest growing and largest independent digital communications agency in Greece.
During Costas’ tenure, Isobar & iProspect won more than 100 awards globally along with the recognition of clients, peers and employees. In 2017, Costas’ & Giorgos’ innovative projects were featured in the Advertising Age.
In REBORRN, Costas - besides managing the company - has been involved in Strategy, CX and BPO projects for global clients like The Coca-Cola Company, Phillip Morris International, Bayer and more.
Although an introvert, Costas loves public speaking and teaching. He has been a speaker and trainer for more than a decade. From conferences to universities and seminars, he has trained more than 3.000 people in Greece and abroad.
Costas may have excelled in the “digital marketing” sector for the past 15 years, but solving real business challenges is what makes him 'get out of bed'. By merging data with intuition, he consults enterprise clients on how to build better experiences for their customers and achieve their goals.
His story starts in 2005 when he co-founded Mindworks with Costas, creating one of the first search marketing agencies. Working together for a decade, they turned Mindworks from a boutique performance marketing agency into a leading full-service digital shop, growing a team of 5 people to a team of 50. In 2015 Mindworks was acquired by Dentsu Aegis Network launching isobar & iProspect in Greece. 2.5 years later and having established isobar & iProspect as market leaders with a team of 85 people he left with his partner to seek together their next venture; REBORRN.
His work has won hundreds of awards on a national and international level. He’s a regular speaker to industry conferences and, whenever finds the time, he writes about the things he’s most interested in, change, people and the digital economy. When he’s not working, besides being a proud husband and a father, he runs. A lot.
Her expertise lies in empowering businesses to excel through visionary People Strategies, putting into practice her MBA degree. While consulting was an unexpected avenue for Kelly, the excitement of pioneering alongside a fresh wave of consultants was an irresistible challenge.
Her professional journey started at Hotel Grande Bretagne, Starwood Hotels & Resorts, where she played a vital role in driving cultural change, revamping HR processes, and navigating a major restructuring. This experience seamlessly led her to the ING Group, where she focused on cultivating culture, amplifying employee engagement, and championing initiatives in learning, performance, talent management, and regional people strategy.
In 2015, Kelly became Tripsta's HR Director. In this dynamic tech-driven environment, she proved that exceptional customer experiences stem from exceptional employee interactions. She also highlighted that agility principles extend beyond software engineering. The challenges of acquiring a rival company, reshaping the organisation, and integrating teams provided Kelly with valuable insights and lessons.
Outside of her professional realm, Kelly embraces the joys of motherhood and is fervently passionate about continuous learning. She's a devoted volunteer, with one of her cherished involvements being with the TEDx Athens organising committee. Despite the constraints of time, Kelly carves out moments for indulging in a good book, trying new cuisines, and exploring new places around the globe.
Evolving from a VP Experience Design to a REBORRN Partner, he now leads a team of talented UX designers, storytellers, illustrators, animators, and coders, bringing innovation to the way they work, building culture, and crafting digital stories and products people would enjoy.
He started his career alongside with some of the best advertising and production agencies in Greece, grabbing the opportunity to work with big clients and engage in many different aspects of digital craft. He has successfully led creative teams for the better part of the last decade, winning dozens of awards, among which, more than once, the Red.Dot Design awards, one of the industry’s most prestigious institutions. He is a self taught designer and definitely a team player, despite working also as a freelancer for more than 7 years.
“Think forward”, “fail harder” and “let’s do it” are some of the phrases you will frequently hear him say to his teams, when he’s not busy talking to his “Alexa”. He is always up for a good conversation, especially if it involves design, technology or Star Wars.
He never stops wondering what comes next.
Following his BSc and MSc studies and after attending a mind changing SEO conference delivered by Costas and Giorgos, Antonis joined Mindworks’ Performance Marketing department in 2012. He witnessed the transition from a boutique performance agency to a large, full-service independent digital shop and in 2015, he was part of the team that was acquired by Dentsu Aegis Network.
At iProspect, the group’s established performance agency, he was a Performance Marketing Director for 4 years, working with multiple industry leading companies such as Allianz, Mondelez, Eurobank, The Coca-Cola Company, and Celestyal Cruises in areas related to performance advertising, analytics & data, ad tech, and search engine optimisation.
In September 2019, Antonis joined the CX & Process Innovation team at REBORRN, working in CRM, Business Process Optimisation and Data projects across several industries.
In his free time, Antonis finds joy in reading about digital analytics and playing music with his band, across Europe (hoping that one day they will cross the Atlantic!).
Mathilda spent the last 10+ years in leadership roles in the European start-up ecosystem, including Director of Sales Strategy & Operations for 12 markets at Deliveroo, Chief Revenue Officer at Side, and most recently as VP of Growth at Zego, managing the B2C and B2B businesses in the UK.
The high performance of her teams has been driven by a people-centred approach, where she has always contributed to her team members' development. Intrigued by the EQ side of the business equation, she also attended INSEAD's Executive Coaching program and is now a certified Business Coach.
Having seen a lot of start-ups scale, she had the drive to start a more entrepreneurial journey and is now working with REBORRN’s founders to set up BORRN, a company that helps start-ups go from zero to one.
Her journey with the co-founders, Costas and Giorgos, began in 2012 at Mindworks, initially onboarded as an Executive Assistant, but soon transitioning to Operations Manager at Isobar iProspect, showcasing her adaptability and skillset across roles.
Prior to these ventures, advertising was Antonia’s domain, where she nurtured her foundational skills. With over two decades of professional experience, she has beeen involved in various fields and industries.
Currently, Antonia’s role is a blend of Finance, Admin, Facilities, and Legal - areas where her expertise shines brightly. Among her multifaceted roles, collaborating with REBORRN’s legal department and the legal arms of partner firms has not only been a professional task but something she is passionate about.
There’s a fun twist to Antonia’s professional tale: she studied in Paris in a field entirely unrelated to her current position. As a student, Antonia honed her skills by proofreading, translating, and even assisting fellow students in writing their undergraduate and graduate theses.
His extensive background includes professional work with some of the world’s most iconic global consumer packaged goods (CPG) brands.
Dimi’s approach to his work is characterized by an ongoing quest for innovation, driven by a fusion of empathy, creativity, and technology. He thrives on the challenge of transforming products and services into memorable and meaningful human experiences, a mission he passionately pursues.
As a visionary leader, Dimi possesses the unique ability to inspire those around him. His presence sparks a creative revolution and instigates positive cultural change within the workplace. His leadership style is a testament to his commitment to fostering innovation and empathy in all endeavours.
When Dimi finds himself in need of creative energy, he explores a variety of sources for inspiration. He engages with the vibrant guests of his Teeny Tiny coffee shop, seeking to draw from their diverse perspectives. In his downtime, Dimi indulges in daydreams of turning his passion for indie music into a fledgling office demo band, demonstrating his unwavering commitment to creativity in all aspects of life.
Growing up on a multicultural island in the Caribbean cultivated her perspective and ignited her fascination with people. That’s why she takes pleasure in exploring how environments can be shaped to empower individuals to flourish and find fulfilment. Throughout her career, she's developed diverse teams spanning the globe, ranging from 25 to over 2500 members.
Sanne holds a BA in Sport Management, a Master's in Business, and a Master's in HR. Her professional journey has unfolded in high-growth international tech companies, where she's harnessed her expertise in Talent Operations, Talent Management, Internal Communications and Culture, Recruitment, International Employment Law, Employee Relations, and Change Management. Her venture into the world of venture capital involved aiding startups in constructing and expanding their teams.
On her personal life, Sanne is a devoted mother to an active toddler. Her enthusiasm for travel is only matched by her clandestine passion for reimagining home floor plans and renovations. Having resided in The Netherlands, Berlin, Australia, and now Athens, she considers herself a love immigrant. She's also the founder of HR Greece, an online community for HR enthusiasts in Greece.
She leads a team of multidisciplinary consultants transforming the CX, marketing & commercial operations of leading global clients.
With a background in strategic communications, she held a number of roles leading to her co-founding Sigmund Communication in 2014 in Athens, a boutique communications agency that grew to represent global brands such as Dior, Turkish Airlines, BP, Thomas Cook, G4S & more.
In 2017 she joined ATCOM, as Chief Commercial Officer & then Managing Director of its consulting offering, where she led a team of strategists, UX experts, designers, data scientists and technologists rethinking physical & online retail CX through the use of technology, service design and innovation sprints.
In her last position before joining REBORRN, she undertook the role of Head of Growth at Stergiou Family, a leading B2B & B2C FMCG brand in Greece, being responsible for rebranding & digital transforming its entire consumer-facing operations.
She holds a B.Sc. in Psychology from the University of Warwick and an M.Phil. in Criminological Research from the University of Cambridge.