Back-end developer internship in fast growing top tier digital agency

Salary Unpaid

Looking for an internship in back-end development? Kickstart your career at Twentyfour!

We are always looking for passionate and motivated people who want to get started in the professional world of back-end development. Are you one of those? Then this is your place!

Who is Twentyfour?

Twentyfour is a 10-year-old online software development agency working in the cool 24Labs ( on Amager in Copenhagen together with companies such as Eatie, EasyPractice, Triptale and few others.

We are a team of around 30 people, including 10 different nationalities. However, we all have a couple of things in common. The first one is the desire to be involved with difficult projects and complex solutions. The second one is that we all like to have a cold beer on Fridays with our lovely colleagues :-)  

What we do

We solve problems for our customers by developing, integrating and maintaining complex systems and websites. 

We do this by providing our team with the tools, challenges and colleagues needed in order to solve interesting problems and enjoy their day-to-day with as little unnecessary stress as possible while we grow our business areas and transition to become primarily driven by recurring revenue.

This way we can work our best with the customers, projects and products that are the right match.

We work with large danish institutions and corporations such as Danmarks Nationalbank, Ørsted, DR, Ny Carlsberg Glyptotek, Green Mobility, Ferrosan, Amnesty International, Folketinget (The Danish Parliament) and many more.

Who are you?

We imagine that your studies are about web development, computer science or similar.

You are a rationally thinking, hard working person and a good team player but also know how to work independently and you are not afraid of challenges or taking responsibility. We expect you to be creative and to not be afraid to speak up your mind.

Your nationality or background does not matter, but we expect you to be very interested in learning and have some experience with at least PHP, Java, Javascript, Python and/or some other relevant programming language. Experience with front-end frameworks is a big advantage.

Our program

We have two internship programs:    

  • 10 weeks full time    

  • 4-6 months full time

The 10 weeks internship is aimed at students from KEA or similar educational institutions. After the 10 weeks, we have good experience with interns writing their final project in collaboration with Twentyfour.

The 4-6 months internship is aimed at students who wants to dive into some of our bigger projects. And 10 weeks would not be enough for these projects. But do not worry. No matter which program you apply for, you will not be brewing coffee for anyone ;-)

We like to take good care of our interns and assign you with a mentor during your time here. After a completed internship, we always consider increasing our team. Therefore, we usually hire two to four interns each year after their programs if there is a good match. 

As a back-end developer intern you will be working with the following:


  • json

  • SOAP / REST Api

  • Nginx

  • Docker / Docker compose

  • PHP 7

  • Java, .NET, Python among other programming languages when relevant for specific use cases

  • WordPress Plugin

  • Breakdown and estimation of tasks

  • Costumer relations  

How to apply

If you want to apply for a back-end focused internship you must complete this test:  

After completing the test, send an application, along with your CV and the name of your bitbucket user via The Hub (

For more information or questions please contact us at

Perks and benefits

This job comes with several perks and benefits

Free lunch
Free lunch

Enjoy a free catered lunch with your colleagues, every day.

Free coffee / tea
Free coffee / tea

Get your caffeine fix to get you started and keep you going.

Near public transit
Near public transit

Easy access and treehugger friendly workplace.

Social gatherings
Social gatherings

Social gatherings and games; hang out with your colleagues.

Free office snacks
Free office snacks

Peckish after lunch? We got your back with soft drinks, treats and fruit.

Free friday beers
Free friday beers

Friday is something special, let's enjoy a beer together.

See all 8 benefits

Working at
Twentyfour (Previously known as HTML24)

Twentyfour (Previously known as HTML24) is a Copenhagen-based digital agency that specializes in advanced software and web development. Twentyfour has created projects for companies such as L'oreal, The Danish Parliament (Folketinget), Glyptoteket, UN, Unity, and several other companies and institutions. Typical projects include websites, campaigns, and various online systems. The agency has 30 employees and hires people with all backgrounds.

Read more about Twentyfour (Previously known as HTML24)

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