Guy Sie

Jack-of-all-trades Online Marketeer

Hey there, I'm Guy. Thanks for coming over and taking a look!

If you want to get to know me better, check out my personal writings - in Dutch - on Twitter and my blog Style over Substance. For some of my work in English take a look at my Master's thesis on Slideshare.

For the more visually inclined my Flickr account contains all of my photos, along with Instagram for any pics from my iPhone. My Pinterest should also keep you busy for a while.

Want to know more about my taste in music? Try my last.fm profile, follow me on Spotify or find out which gigs I'm going to on Songkick.

See what else I'm doing in my spare time by checking out the books I'm reading on goodreads, the games I'm playing on PSN, the shows and movies I'm watching on trakt.tv and the places I visit on Foursquare.

Or take a look at one of my other social media profiles!




Twitter:   @guysie

Where I've Worked...



MSc. Communication Studies (Cum Laude)

University of Twente

Specialized in Marketing Communication, with a minor in Computer Science. Elective courses from the New Media and Corporate Communication tracks. Graduated with honours (cum laude) studying the effects of authenticity in marketing. My Master's thesis is available on Slideshare.



Social media specialist


At this leading premium 3D printer manufacturer I am one of the primary marketing specialists in a well-rounded content marketing-oriented team. Beyond handling the responsibilities of all branded social platforms and activities, including (competitive) monitoring, content distribution, engagement, etc. this role also includes content strategy and content production activities, from writing single blogs to the coordination of multi-day photo and video story productions.

2015 - Present

Community Manager


At this startup in advanced search technology I was responsible for tailoring the newly developed solution into a crowdsourced platform where users could discover, organize and share new information. I designed user-related flows and helped develop new features in anticipation of the public launch, spanning the full range of the AARRR (Acquisition, Activation, Retention, Referral, Revenue) lifecycle. Additionally I was product owner of outsourced app development on the iOS and Android platforms.


Social Media Manager

Brooklyn Ventures

Developed and executed social media strategies for this venture capital firm and the start-ups they invested in, on all applicable fronts (marketing, customer service, recruitment, etc). Performed additional marketing tasks for two of their investments, RingCredible and SoSocio, in particular.

2012 - 2014

Social Media Manager


Was online marketeer for RingCredible, a multi-platform smartphone VoIP app that lets you make cheap international phone calls - on average 90% cheaper than your provider and 70% cheaper than Skype's rates - to anywhere in the world.

2012 - 2014

Social Media Manager


Was online marketeer for SoSocio, a Facebook app that creates digital photo albums of the pictures in your Facebook account, including the comments that your friends have left. You can also have these albums printed and shipped right to your door, anywhere in the world.

2012 - 2014

Junior Online Strategist


After getting my Bachelor's degree I started working for this full-service advertising agency, part of DDB Worldwide, I worked with large clients such as the ABN AMRO national bank to help them make effective use of social media. I also developed social media elements in support of advertising campaigns and internal projects created at Etcetera, including award-winning work such as the Bol.com ‘mummy suit’ viral and the Delete2009 project. I left to return to university and finish my Master's degree.

2009 - 2010

Intern / Project Manager

Markeys Branding

During my internship at this branding agency in the Netherlands, I evaluated the company's current situation and helped develop a new positioning and identity to set it apart from its competitors.


View LinkedIn

Get in touch!

Guy Sie

Email: guy@guysie.nl
Twitter: @guysie
Skype: GuySie