Front-End Developer Internship – Play a Key Role in an Impactful Startup with Direct CTO Mentorship

Salary Unpaid

Ready to turn classroom skills into code that connects people? BuddyUp Social is a fast-growing Danish startup on a mission to combat loneliness and make it easier to meet new people through shared interests and local events. We’re looking for a Front-End Developer Intern – ideally with experience in Flutter – who’s eager to learn, grow, and contribute to a platform with real social impact.

You’ll work directly with our experienced CTO, gaining hands-on mentorship while helping shape the look and feel of our app as we scale. Whether you're passionate about tech, human connection, or both – we welcome applicants of all backgrounds.

Primary Responsibilities:

Support the transition of our front end into Flutter, helping set the foundation for scalable and maintainable code
Optimise existing features and develop new user-facing functionality that enhances the social experience
Work closely with our UX designer to bring new visuals and interactive elements to life in the app
Collaborate with the team to create our own fun, engaging in-app widget character (think the Duolingo bird – but make it BuddyUp!)
Participate in feature planning, provide technical input, and contribute to building a friendly and accessible social platform
Learn and grow through direct mentorship from our CTO, with the opportunity to explore areas beyond front-end depending on your interests

Skills and Qualities We're Looking For:

Some hands-on experience with Flutter, or a strong interest in learning it quickly
Familiarity with mobile app development principles and responsive UI/UX
A collaborative mindset – you're open to feedback, communicate clearly, and enjoy working in a startup team environment
Interest in working with APIs and third-party integrations (e.g. Firebase, Google Maps, Meta, or Stripe)
Comfortable using GitHub for version control and code collaboration
Exposure to project management tools like Trello and communication tools like Slack or Google Meet
Bonus if you’re familiar with Figma or enjoy translating designs into polished UI
A portfolio, GitHub link, or small code sample is appreciated – or you’re happy to complete a short task with us

What We Offer:

Close mentorship from our experienced CTO and co-founder, who brings over 20 years of hands-on tech and startup experience
Real responsibility – the code you write will shape live features and directly impact how people connect and build friendships
A supportive, purpose-driven environment where your ideas are valued, and you’ll be encouraged to work independently and contribute improvements
A flexible work setup – fully remote is totally fine, with the option to co-work with the team in Copenhagen when available
A written reference and the potential for the internship to evolve into a paid role if there’s a strong match

Additional Information:

This is an unpaid internship
Duration and start date will be agreed upon together (eight-week minimum preferred)
You will work on your own PC or Mac (we do not supply computers)
You must have the right to work in Denmark

Application Timing:

Please apply as soon as possible, as applications and interviews are ongoing.
If you have questions or need more information, reach out via email. We look forward to seeing what you can build with us.

For more information or questions please contact us at info@invaerse.com

Perks and benefits

This job comes with several perks and benefits

Remote work allowed

Social gatherings

Flexible working hours

Skill development

Unlimited holiday

Work life balance

See all 7 benefits

Working at
BuddyUp Social

See company profile

BuddyUp Social is a social discovery platform helping adults in Denmark—especially expats and newcomers—find meaningful connections through shared interests and real-life events. We’re solving the problem of adult social isolation by making it easy to create, join, and engage in hobby-based meetups, all through one intuitive app. Making friends as an adult can be surprisingly difficult. Whether you're a Dane moving to a new city or an expat starting fresh in Denmark, it’s common to feel socially disconnected. Many adults don’t know where to start when it comes to meeting new people outside of work, dating apps, or closed social circles. This problem is widespread and well-documented—especially in Denmark, where surveys consistently show that many internationals struggle with social integration, and even locals describe it as awkward to make new friends past a certain age. We’re tackling this head-on by making socializing more accessible, interest-based, and low-pressure. BuddyUp Social is designed to break down the barriers of adult friendship and create opportunities for spontaneous, real-world connection. Whether it’s joining a hike, hosting a board game night, attending a ceramics class, or finding a casual pub quiz crew, BuddyUp is all about connecting people who are "up for it"—with no pressure, no awkward messaging phase, and no algorithms getting in the way. Unlike traditional social platforms focused on digital interaction, BuddyUp is built around real-life meetups. Users can explore and join events happening near them, or create their own. Events can be public or invite-only, recurring or one-off, and are always centered around shared hobbies or interests. The app also welcomes collaborations with local businesses, allowing them to showcase open community events, bringing even more variety and accessibility to users. We’re launching in Denmark first—starting with Copenhagen and Aarhus—before expanding to similar cities across Europe. The idea behind BuddyUp was born from personal experience. As someone who returned to Denmark after years abroad, and with friends struggling to meet people after relocating, it became clear how socially challenging adulthood can be. We kept hearing the same story: “I’d love to meet new people, but I just don’t know how or where.” Instead of settling for outdated forums, clunky Facebook groups, or apps not designed for platonic connection, we decided to build a better solution ourselves. BuddyUp is more than an app—it’s a movement to make adult friendship and community-building normal, easy, and enjoyable again. We’re passionate about creating a product that helps people feel less alone and more empowered to take the first step toward new friendships. We believe that real-life connections are essential for personal happiness and social wellbeing—and we’re here to make those moments happen.