Chairman & CEO

Theodoros Moulos

Theodoros has a 15+ year experience in running successful and profitable software products. Lately, he used to be the COO and then CEO of Pinnatta Mobile app (The world’s first interactive messaging platform, counting more than 1.5M downloads worldwide based in Sunnyvale, CA (U.S.A.)). During his free time, he coaches and consults startups. His career includes managerial posts for companies both in Greece and abroad and he has significant skills on intrapreneurship and entrepreneurship.

“Never perform a change without been supported and justified by a metric or finding. Never start a changing procedure without measuring your starting level, your basis. So, first we measure and then we change, not the other way around.” Remember, lack of virality is the result and never the root cause!

Co-founder (CEO

Savvas Zortikis

Savvas is a growth hacking expert with solid experience in getting traction, boosting retention and product development with a specialization in SaaS businesses and web applications.

“I consider myself lucky, as I have the opportunity to work with an incredible team, on unique projects, in a way that no one else does.”


Growth Master

Sotiris Pantazis

Sotiris is a data oriented Engineer. He uses his skills in Analytics, SEO and PPC to plan and build Growth processes. His ability to extract insights from data, combined with his knowledge in frameworks such as AngularJS, acts as a catalyst to execute fast and precisely.

“I don’t know if it’s considered to be a problem, but I love watching changes in numbers; I prefer them when they rise, though. Working in a team like ours, gives me an everyday opportunity to try and turn great products into coded pieces of art.”

Growth Engineer

Thomas Lekkakos

Thomas has an extensive relationship with business & marketing with an obsession on product design. He always gets excited with scalable ideas and truly adores experiments, while getting dirty on data. All the above combined with his UX expertise makes the go-to person for Conversion Rate Optimization.

“Better Conversion rates is not a smooth – easy going process, there not magic templates and you’ll never know what will work. You need to hustle with data and experiments, then do it again! If you can acquire users cheaper than your competitors, It’s better marketing, you grow faster and you win.”

Growth & Content Marketer

Apostle Mengoulis

Apostle is a pure-blood Marketer. His job is to find a way when ostensibly there is none. Planning and executing A/B Tests, Email & Content Marketing along with alternative marketing techniques based on human psychology, all for the sake of customer success.

“Working on growth, gives me the opportunity to explore unknown aspects of marketing and in the same time, express and tame my madness through crazy ideas and tests. Being able to write and share my knowledge with other marketers, is just more cream in my latte.”

Customer Success Manager

Helena Kazia Batma

Helena is a pure (customer) support person. She uses her technical background (Computer Engineer) and her empathy to make technology understandable to all. Her job is not only about feelings such as happiness and satisfaction, though, but about numbers and success, as well.

I’m lucky enough to start building a career that is a natural fit. I love reading between the lines, helping people and interacting with them directly, instead of coding or crunching numbers in some back room. I need human interaction and emotional feedback to be truly satisfied in my line of work, and that’s exactly what I get among the GrowthRocks/Viral Loops people.


Creative Director

Sotiris Kontogiannis

Sotiris is a UI/UX pioneer, that uses his knowledge in design, illustration and front-end development to guide customers, through their journey towards conversion.

“Art is to represent, how things feel like. Everyday I seek and discover new meanings in UI and UX. Such an open-eye experience allows me to put my tiny signature onto something that others, spend their lives with.”

QA Specialist

Thanos Priftis

Thanos can, and will find bugs and room for improvement everywhere. He knows how, nearly every mobile device out there works, which allows him to look things in the way that matters the most; In details.

“It really lifts me up to discover flaws, as it the ultimate way to touch perfection. Although there is no such thing as perfect, it’s fun to bring a developer on the edge.”

Country Manager (Romania)

Adrian Vlasiu

Adrian is a senior experienced Growth Hacker and Marketing Specialist, with over 15 years commercial and marketing experience, selling and managing products, services and integrated solutions in the IT / RETAIL sector from SME to Enterprise level, FMCG sector and ENERGY/OIL & GAS sector.
He is specialised in developing and implementing of growth strategies both in early stages or established companies and providing training and coaching on digital growth skills (Growth Hacking, Growth Marketing) for corporate, startup companies or individuals, through consulting, courses and workshops.
His specialties include a strong experience in sales and marketing, particularly SaaS and new business development, Digital Marketing (SEO,Content,SMM,SEA, SEM), Funnel Marketing (User Acquisition,Activation.Retention, Referral,Revenue), Business Intelligence, Viral and Referral Marketing as well as Competitor Analysis.

” Being very competitive by nature assures me with enough strength to out work any talent.
I love developing and exploring ideas for my clients, forge images and words into the right appealing product. There’s seems to be no end to the possibilities and absolutely no replacement for hard work and doing your research. “

Growth Engineer

Constantine Kalyvas

Constantine is a performance oriented Marketer mainly working on acquisition channels. He has mastered search engine marketing, both paid and organic. He also likes to work on side projects that involve crawlers and search engines in general because they are just cool.

Value is what brings people together and what it sets them Apart.


Product & Growth at Viral Loops

Dimitris Tzortzis

They say to turn your weakness into a strength and that’s what Dimitris did, turning his OCD into an asset for creating polished products. With a professional experience as growth engineer and a background in electrical engineering, Dimitris is pooling all skills together to solve problems at Viral Loops (GrowthRocks’ flagship product), identify areas of improvement for the product and work with the team in crafting the ideal customer experience.

I believe that the devil’s in the details and that we should be the most demanding customers of our own product. Otherwise someone else will.

Growth Master

Antonia Deligiorgi

Antonia is curious by nature: she loves digging into data, analyzing customer behaviors and searching for new acquisition channels. She has a background in Computer Science and experience in running successful multi-channel marketing campaigns.

What I love the most about Growth Hacking is the experimentation process.
It requires being in a state of constant learning, while you have to repeat the process all over again, until you come down to the optimum solution.

Real growth is never easy to conquer, and that’s the most challenging and interesting at the same time part of my job.

Creative Director

Yiannis Koutsoupas

Digital designer with over 17 years of experience, with a focus on user experience design.
Proficient in: user-flow and interaction, UX and UI design for websites and mobile apps
Specialties: interaction design, wireframes, prototyping, usability testing, responsive design with a background in graphic/visual design, game & flash development.

Worked under: different business schemes as freelancer working with agencies and individuals, but also both in big corporate environments as well as in flexible and dynamic start-up companies in the visual and interaction design field.

“Creativity is inventing, experimenting, growing, taking risks, breaking rules, making mistakes and having fun.

CTO Viral-Loops / GrowthRocks

Thomas Papaspyros

Thomas Papaspiros is CTO and advisor at Viral Loops.
During his 10 year career, he has led development teams for well-funded startups in US, EU and Asia serving from casual users to Fortune 500 clientele.
He has also cofounded 2 startups and took part in 2 accelerators.
His main competence is combining technical expertise with business-oriented approach and project management skills.

If slowness is a bug, then speed is absolutelly a feature. Personally i like attacking things in an agressive yet well thought manner and this is what i love about this team. Getting used to this environment, sometimes you think that the rest of the word moves in slow motion.

Copywriter | Content Writer

Nicolas Lekkas

Coming from traditional advertising as a copywriter in a multinational, Nicolas found what he was looking for: Creativity fused with the Scientific Method; Growth Hacking.

“I typed my first digital words on the Windows 95 Notepad, installed on my first PC (133Mhz!). I had no idea what I was doing. More than two decades later, I sometimes still get the same feeling. It’s what pushes things forward”

Senior Web Developer

Thanasis Chrysovergis

Thanasis is an 11+ year web developing professional and enthusiast. Always updated with the latest trends and driven by data, his knowledge and vast experience give his renowned unique perspective to each project delivering the best results.

“The perfect website or landing Page is not something trivial. Every electronic asset of every company is created for a reason. That reason must contain the branding of your firm and the message you need to pass to your customers, expressed in a way to engage them in the most effective manner. All this is a journey for me and for me every customer is like a different destination … and I love traveling.”

Growth Master

John Foundis

John has more than 8 years of experience in Digital Marketing focusing on strategy and content creation! He was on the head of the strategist campaign managers team during
the 2014 EU elections but his area of expertise is focusing on start ups , lifestyle/fashion and digital media accounts. He is also the Founder of FaShionFReaks and Fashion
Factory as well.

Being part of several projects as a freelancer and few agencies as well I finally realize that in order to wear my dark cape daily and be creative as much as I want the only solution was to become Growth Master.

Senior Account Executive

Viviane Boumi

Experienced Business Development and Corporate Communications Manager with a demonstrated history of working in Marketing and Communications globally, B2B and B2C. Skilled in Business Strategy and Growth, Customer Relationship Management and Corporate Communications. Strong digital media knowledge at a professional but also educational level, with an MSc in e-Business Management from the University of Warwick, focused on e-enabling and growing businesses in different sectors. Loves Growth Hacking Marketing, supporting and enabling start-ups & well-established companies to Grow and excel.

Grow and always be kind 🙂
Never count years bites or sips.

SEO specialist

Anna Moragli

Anna is an SEO specialist. Fascinated with user acqusition, activation through content and retention to drive revenue. Her enthusiasm for new experiences has led her to various educational programs, seminars and projects.

Eager lover of learning and sharing, always striving to learn new techniques and trends about digital marketing and growth of business. Also,served as president of BoD of ThinkBiz, the first student entrepreneurship organization in Greece.

Growth Engineer (PPC Specialist)

Ioannis Kiskipelis

Digital Marketer, visionary and Growth minded, dedicated to help businesses and startups find their way in the chaotic web. Fully understanding the digital landscape and how it fits together, bridging the gap between marketing, sales, customer experience, and technology. Truly passionate about my work, i spent my time between PPC and Chatobts.

My moto is work hard & party harder, never stop improving and always dream big.

Co-founder (Advisor)

Nestor Louizidis

Nestor has worked for many years in C-level positions in multinationals, in the technology and media sectors. He is guided by his interests in technology, business, and marketing. He likes combining ideas from different disciplines, creating new hybrids. He has, at one time or another, been a founder, a CEO/General Manager, a Business Development Director, a CTO/IT Architect, and a Programmer.

“The only real limit in business is the team. Their beliefs, attitudes, and self-imposed boundaries. For everything else, we can always find a solution or alternative of some form.”

Web Developer

Nikos Anagnostopoulos

Nikos is a web developer dedicated in providing UI/UX solutions. Always keeping up with the latest trends and driven to test everything instantly. He is a silent guy so he lets his typing speak for him. His superpower is that he manages to use web development as a marketing asset creating web properties that provide a combination of the latest trends while being easy for the end user.


Growth is only accomplished when you can provide web properties that present the owner’s vision and strategy in the best way as long as being appealing to the end user.

Growth Marketer

Hellene Mouchtari

Hellene is a Growth Hacker at heart. She is dedicated since ever in helping companies grow and therefore help also people grow. Growth is in her blood. She started as an entrepreneur at a very young age only to discover lately that marketing is the only answer to every problem.
In her spar,e time she travels and takes photos from places and things that drive her imagination and bring her references from different countries and businesses.

“Digital marketing and more precisely Growth Marketing is the only way to skyrocket every business”


Growth Engineer

Andreas Karavanas

Andreas started developing and designing websites from a very young age, having a noteworthy portfolio. Growing older he understood that a website could not bring qualified leads by itself, so he started optimizing and growing the websites beginning with social media and going on with SEO Strategies, Funnels, Performance Marketing and Inbound Lead Generation. He studied Computer Science & Engineering and has always loved experimenting with new growth techniques and tools.

I don’t consider myself a Growth “Hacker”. I am more into engineering a project from zero point all the way to the top, analyzing and optimizing the sh*t out of it. Unfortunately, there’s no roof. Having growth as a mindset, you just can’t stop experimenting and implementing new ideas and techniques.

Head of Growth

Bill Stathopoulos

Bill started out as a Growth & Content Marketer, delivering Inbound and Content Marketing strategies and campaigns that routinely outperformed expectations. He has a background in Computer Science and Entrepreneurship, as well as a natural incline towards Marketing, which makes him the perfect fit for the world of Growth Hacking. Due to his extrovert attitude, he moved into the Growth Strategist and Partner management position helping GrowthRocks expand to new geographies, create synergies and develop new products. He is currently the Head of Growth at GrowthRocks.

I believe that my purpose on this planet is to surround others with care. Marketing has given me the ability and resources to create remarkable experiences that have the potential to touch other people’s lives and make them a tiny little bit better, happier, more fulfilling. As Maya Angelou once said, people will forget what you said, people will forget what you did, but people will never forget how you made them feel.