Bart is currently taking jobs as a freelance growth hacker.
bartstemkens.
Crafting digital strategies for start ups and scale ups through growth hacking.
Hi, I’m Bart. I am an independent growth hacker and digital strategist with 6+ years experience in the field. I translate business propositions into scalable digital strategies to help companies meet their full potential.
Skills I bring to
the table
All my activities focus on creating long term sustainable growth. I use a full funnel focus approach — setting up experiments over different funnel phases — using tracking and data reporting to analyse results. Everything with the goal of identifying your next growth strategy.
Strategy & Consultancy
I help validate your business propositions, execute competitor landscape scans and help define KPI’s together with the North Star Metric. I do this by running Validation Sprints and Growth Sprints.
Marketing Automation
By automating marketing processes and combining the right software and tools, I help nurturing leads by giving them each a personalised experience. This varies from email automations to Messenger and WhatsApp bots.
Tracking & Analytics
Start understanding the impact of your business efforts. I translate data into valuable insights. KPI’s are translated to real-time dashboards and (bi)weekly analytic reports.
Search Engine Optimisation (SEO)
I’ll help identifying quick (technical) wins to raise in search engine rankings with your website. Keyword research will allow me to create a long term SEO strategy including content planning and a backlinking.
Social Advertising
I’ll set up and manage your ad campaigns, identify important customer segments and set set up experiments to discover new channels to scale. Whether it is Instagram, Pinterest or TikTok.
Content Marketing
Content marketing can be a good way to attract valuable leads. I’ll help you identify content gaps and translate these into an actionable roadmap. I’ll help with your content creation and planning, while keeping an eye on the ROI.
Brands I’ve
worked for
The Talent Institute
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KIMO.ai
KIMO is a Dutch AI firm, focused on personalised learning. My role is to design and implement a growth strategy.
The Talent Institute
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Valyuu
Valyuu is an AI driven trade-in platform for used e-devices. My role is to set growth goals and advice on customer aqcuisition strategy.
The Talent Institute
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Innoleaps
Innoleaps empowers Fortune 500 leaders, corporate innovators and startup/scale-up founders to create long term sustainable growth. Innoleaps is specialised in accelerating corporate ventures. Their partners include Friesland Campina, Nestle and ING. As a growth hacker at Innoleaps I am responsible for testing business propositions through different channels in different markets of various corporates.
The Talent Institute
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Bieden en Wonen
Bieden en Wonen is the biggest online auction real estate broker. Bieden en Wonen is revolutionizing a conventional industry at a rapid pace.
I have led a 6 month full funnel digital transformation, which resulted in a new business proposition. I helped set up new lead generation campaigns, formulate a long term SEO plan and create a succesful referral strategy.
The Talent Institute
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Klup
Klup is a Dutch social community platform for 50+ year old (mobile & web app), where users organise activities in their neighbourhood so they can meet peers. In less then 3 years they’ve grown to thousands of monthly active users, responsible for over 200 weekly organised activities throughout the Netherlands. In order to keep up with their growth and create a scalable strategy, I’ve helped Klup with the following:
- (Pirate) Funnel visualisation through analysing it’s KPI’s & metrics, translating this into curstomer journey maps;
- Data analytics & reporting. I’ve build a custom data dashboard (through Datastudio & sheets) where the team would get a new report on the app performance, acquisition statistics and conversion rate mapped in the Pirate Funnel each week;
- Executing an ‘Aha! moment’ analysis;
- Designing an extensive automated communication flow, steering on metrics getting users to the Aha! moment, based on 15 variables and over 30 different messages;
- Running experiments to increase activation rate in the first month after sign up (resulting in a 160% growth in activation rate in less then 2 months);
- Creating a scalable city-per-city growth strategy by running Facebook lead gen ads based on look-a-like audiences of Klup’s most valuable users;
- Implementing automated feedback loops to measure the customer success metric throughout the whole customer journey;
- Running an extensive growth audit.
The Talent Institute
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DFNS
Born in Amsterdam – raised for the world. DFNS is a globally operating start-up producing lifestyle care products embraced by companies such as Footlocker, Snipes & Champs. Tasks I have been responsible for:
- Full tracking & analytics infrastructure, design & implementation, (using pixels, tag management tooling & heatmaps)
- Identifying DFNS’ online audience by running experiments through Facebook ads & Instagram ads (resulting in a 120% increase of CTR in 2 months)
- Writing a SEO strategy for the copywriting team, in order to optimise findability through partners (try googling ‘footwear protector’ or ‘leather shoe protector’)
- Instagram growth strategy design, with a result of a 200% follow growth (2000+ followers) in two months, using a hashtag strategy combined with viral tooling (ViralSweep)
- Running and optimising brand awareness campaigns in 4 continents, with a four digit monthly budget.
The Talent Institute
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Sprints & Sneakers
Amsterdam’s leading growth hack agency has a proven track record of helping promising startups to well known corporates, helping them achieve their growth marketing goals. Besides letting you discover new traction channels, they are on their way to becoming the first certified B Corp growth hacking agency in the world. Besides running Klup and DFNS during my time at Sprints & Sneakers, among my responsibilities were acquiring new clients (with a focus on social-enterprises), running lead gen ad campaigns and preparing the B Corp certification assessment.
The Talent Institute
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Sir Jaba
Are you in Amsterdam and in need of a partner of entertainment? Sir Jaba assists high-net-worth individuals with everyday requirements and demands. Tailor made to our clients’ lifestyle.
I’ve founded this startup with my partner Jaap, with whom I share the love for the city of Amsterdam. Making use of our extensive network in hotels, bars and restaurants here in Amsterdam, combining that with the local knowledge we both posses, we design custom experiences for our clients. Besides designing experiences I am responsible for the account management, webdesign, SEO/SEA strategy & tracking & analytics.
The Talent Institute
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Closure
Closure is a Rotterdam based start-up and is known ‘Sprout Startup van het Jaar’ finalist, and winner of the Philips Innovation Awards. The company foresees a day on which everyone’s legacy in the private sector is automatically ended, just like it does in the public sector. To achieve this, they’ve developed an automated tool for relatives that takes away pain for both loved ones and companies. In this project I have been responsible for:
- Designed a highly targeted SEA strategy (which resulted in a 100% increase of web-visits on an average of 30 cent p/click in less than 2 months);
- Executing competitor research that formed the fundaments of a new growth strategy;
- Weekly web and app data reporting;
- Designing a digital product tour (which increased conversion rates with 40%);
- A/B testing landing pages using Google Optimize, increasing Click Through Rates of some pages with 40%;
- Copy writing for webpage content;
- Designing and executing a new sales strategy;
- Redesigning the company’s webpage based on heatmaps and other forms of UX research.
The Talent Institute
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The Growth Agents
The Growth Agents is a Haarlem based growth advising agency. Other than your usual agency, TGA also takes a close look at your organizational structure to unlock growth potential. I am involved as an advisor and growth hacker to run growth audits and execute digital marketing activities for several clients.
Certificates
Google Tag Manager Fundamentals
Advanced Google Analytics
Google Analytics Individual Qualification
Google Analytics for Beginners
Search Ads 360
Display & Video 360
Google Ads Fundamentals
Digital Buyer
Tools
If the only tool you have is a hammer, it’s hard to eat spaghetti. As a growth hacker it’s important to have full knowledge and control over the right tooling. This is a selection of tools I’m comfortable working with.
Creators & Innovators — freelance growth hacker — KVK 77715020 — BTW ID NL003226750B56