Front-end developer A/B testing

Job description

We are looking for an front-end developer A/B testing to join our impact squad

What others think you do

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What you actually do & how you get it done

As front-end developer A/B testing t’s important you’re able to build and conduct your own A/B- tests. That means:

  • You can write code (HTML / CSS / Javascript / jQuery)

  • You are an expert in standardized A/B testing tools (VWO / Optimizely / Google Optimize)

  • You're an expert in setting up Google Tag Manager

  • You know how to set assumptions and how to set-up the right tests

  • You’re responsible for the development and release process

  • You underline your choices with clear reasoning and unquestionable data

  • You build, measure and learn: experimenting is the key to great results

  • You share your insights, learnings and the results

  • You continuously stay up to date with new developments

What your LinkedIn profile would read

Next-level A\B tester 

What other people notice about you


  • Move fast - be bold and open

  • Work together - it's better :-)

  • Show your style, lots of energy and a positive mindset

  • Own your projects and get (sh)it done

  • Value quality over quantity,  

  • Invest in people and 'pay it forward'

Your average working day might look like this

09:00 Coffee / Tea

09:01 Analyse test results

09:10 Tea / Coffee

09:11 Further analyse test results

10:00 Inform customers on the test results and next steps

11:00 Explain the importance of A/B testing to our new customers 

11:30 Scan the tag manager setup for a new customer

12:00 Sandwich / Salad

12:30 Coke / Water

13:00 Crack brain on how the f*ck am I going to test this assumption

13:15 Found solution and start developing the new near impossible A/B tests

16:00 Together with our designer create some functionalities and checkout improvements

17:00 Train / Car / Helicopter

The dream team

At Direct Impact, we all love working on projects together with the very best in marketing automation, analytics & metrics, conversion optimization, growth hacking and lean startup methodology.

You will be part of multiple client facing teams consisting of expert growth hackers, conversion specialists, data nerds, digital designers, online marketers, social advertising experts, copywriters and people with great sense of humor. (Some more than others ;))

Just a few reasons you want this job…. BAD!

  • Cash moneyz!

  • Direct Impact offers you a great place to experiment and learn

  • You will work closely together with ex-Coolblue guru's and a silicon valley founder

  • A super direct and driven team

  • A minimum of 25 vacation days. And we're happy to discuss more if needed

  • The possibility to work from home or one of our clients' offices

  • Room for new initiatives and ideas

  • A job that will never feel like a job


We ask

  • You have a couple of years of experience in developing A/B testing

  • You’re a pro in HTML5, JavaScript, jQuery and CSS

  • You to develop your talent by continuously learning and experimenting

  • You to unleash your passion and drive while always taking full ownership for everything you do

  • That you’re already somewhat experienced with social advertising platforms

  • That you have excellent language skills in both Dutch and English

  • That you love data and have a talent for great analysis

  • That you can stay firm on content without jeopardizing professional relations

  • That you are able to see the big picture but also have an eye for detail

Interested, any questions or just want to have coffee? Please get in touch with  

Jeffrey Hamelink:, +31 6 573 461 87.

Dear staffing agencies. Please follow us on LinkedIn to keep in touch. At this moment, we're confident that we can attract new superstars ourselves.