Game Changers Wanted

Join Sunday to shape the future of ad-monetized mobile gaming. Here you’ll work on what matters – bringing joy to people, expanding on your skills, creating the next big thing, and taking your career to daring new heights.


Junior Unity Integration Developer (f/m/d)

  • Hamburg
  • Sunday
  • Growth
  • Full-time
We are looking for a Junior Unity Integration Developer to help us with maintaining our whole game portfolio and making sure our Sunday SDK is always up-to-date and running smoothly in every game.

Sunday is a young and successful startup that develops, publishes, and markets hybrid-casual mobile games. Our international team of around 50 developers, artists, game designers, marketers, and publishing managers reaches an audience of millions of players every day. Our goal is to become one of the leading mobile game companies worldwide within the next few years.

We receive immense support to achieve this goal through the AppLike Group. Our sister companies justDice, justtrack, adjoe and Tabbler provide us with cutting-edge marketing and advertising technology. Our growth is secured by a substantial investment from Bertelsmann, one of the biggest media companies worldwide.

If you like to challenge yourself and want to work in a high-performance environment, send us your application!
What you will do:
  • You will help to maintain our whole games portfolio by making sure our Sunday SDK is always up-to-date and running smoothly in every game 
  • You will collaborate closely with our Unity Integration Developer to assist in various tasks 
  • You will carefully analyze details, investigating the factors that could affect the optimal performance of our tech stack
  • You will work closely with Growth Managers and implement new revenue-driving features into our games
  • You will empower game developers to effortlessly incorporate new hybrid casual game features
  • Who you are:
  • You hold a degree in Computer Science/Software Engineering or are close to finishing your studies 
  • You are familiar with Unity3D and C#, Java and Swift would be a big Plus 
  • You have a key understanding of data structures and algorithms
  • You gained basic knowledge of version control, ideally Git and collaborative workflows
  • You tackle challenges head-on with a robust problem-solving mindset.
  • You communicate efficiently while demonstrating strong project and time management skills
  • You are eager to stay current in Unity and game tech and continuously want to expand your knowledge in several fields 
  • Why you will love working here:
  • Work-Life Package: 2 remote days per week, 30 vacation days, 3 weeks per year of remote work, flexible working hours, dog-friendly kick-ass office in the center of the city.
  • Relocation Package: Visa & legal support, relocation bonus, reimbursement of German Classes costs, and more.
  • Happy Belly Package: Monthly company lunch, tons of free snacks and drinks, free breakfast & fresh delicious pastries every Monday
  • Physical & Mental Health Package: In-house gym with a personal trainer, various classes like Yoga with expert teachers & free of charge access to our EAP (Employee Assistance Program)  to support your mental health and well being
  • Activity Package: Regular team and company events, and hackathons.
  • Education Package: Opportunities to boost your professional development with courses and training directly connected to your career goals 
  • Wealth building: virtual stock options for all our regular employees
  • Skip writing cover letters. Tell us about your most passionate personal project, your desired salary and your earliest possible start date. We are looking forward to your application!

    We welcome applications from people who will contribute to the diversity of our company.


    Open and modern Office
    Own Company Gym
    Flexible Working Times
    Fresh Drinks & Food
    Free Choice of Hard-and Software
    Public Transportation Subsidy
    Monthly Company Lunch and Breakfast Monday
    Virtual Stock Option Plans
    Educational Opportunities
    German classes reimbursement
    Dog Friendly
    Sunday Starter Kit
    Relocation Support
    Dennis Heinrichs
    Working at Sunday gives me the opportunity to throw myself into exciting challenges everyday and get the support to own my projects!
    Süleyman Süzen
    Sunday is full of talented & fun people from different background and that creates an exciting work environment that never gets boring!
    Berksu Gündüz
    I work at Sunday because it is the perfect workplace for empowerment, enrichment and where opinions really matter!
    Nicholas Bloom
    What I like most about working at Sunday is that my colleagues motivate me to better myself each and everyday.

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