2025 Summer Internship - Developer Intern

2 Months ago • Upto 1 Years • Backend Development

Job Summary

Job Description

King is seeking exceptionally skilled Developer Interns for its Summer 2025 program in Barcelona. Interns will collaborate with experienced developers to design, develop, and implement engaging game features and optimizations using C++. Responsibilities include translating game requirements into efficient code, debugging performance issues across platforms, collaborating with cross-functional teams (designers, artists, QA), and participating in development discussions. The internship provides hands-on experience refining technical skills in a fast-paced environment. The program runs for three months (June-September 2025), and early application is advised.
Must have:
  • Strong C++ knowledge
  • Object-oriented design
  • Debugging & optimization
  • Client-server architecture
  • Problem-solving skills
  • Communication & collaboration
Good to have:
  • Java proficiency
  • Game mechanics understanding

Job Details

Craft:

Technology & Development

Job Description:

Software Developer Intern – Summer 2025 

We are looking for extraordinarily skilled Developer Interns from a variety of backgrounds and interests to join our Kingdom this Summer! 

Your Role Within the Kingdom 

Are you a C++ enthusiast with a passion for games and interactive experiences? Join us as a Software Development Intern and collaborate with client developers to create and enhance game features for millions of players worldwide. This role will give you hands-on experience developing impactful, player-facing features, allowing you to refine your technical skills while working in a fast-paced and dynamic team.
Your Responsibilities

  • Work alongside client developers to design, develop, and implement engaging game features and optimizations.
  • Understand game requirements and translate them into clean, efficient, and scalable C++ code.
  • Debug and resolve issues related to game performance and functionality across multiple platforms.
  • Collaborate with cross-functional teams, including game designers, artists, and QA, to ensure feature quality and smooth integration.
  • Participate in brainstorming sessions and development discussions to contribute ideas and refine features.

Skills to Create Thrills

  • Strong knowledge of C++ programming and object-oriented design.
  • Familiarity with debugging tools and performance optimization techniques.
  • Basic understanding of client-server architecture and network programming.
  • Interest in interactive systems, game mechanics, and feature development.
  • Strong problem-solving skills and attention to detail.
  • Excellent communication and collaboration skills.

Tasty Bonus Skills: 

  • You should be a current student or recently completed your studies 
  • Excellent communication skills in English and great organization skills 
  • Creative problem-solving skills 
  • The ability to work well, both autonomously, and as part of a larger team 
  • Attention to detail and accuracy 
  • Proactive, enthusiastic, and results driven with an openness to feedback 
  • Ability to use own initiative and motivation to meet deadlines and set priorities 
  • Passionate about building technology and games 
  • Proficiency in Java 

The skills listed above are intended to portray the range of roles we have available; you do not need to possess all of these skills to apply! We will look at your own individual skill set and determine which team you would be best suited to. 

The brilliant experience we give our players comes from the diversity and experience of our people. A great saga needs all sorts of heroes. That’s why we hire all sorts of talent. 

We love hearing from anyone who is enthusiastic about changing the games industry. Not sure you meet all qualifications? Let us decide! Research shows that women and members of other under-represented groups tend to not apply to jobs when they think they may not meet every qualification, when, in fact, they often do! We are committed to creating a diverse and inclusive environment and strongly encourage you to apply. 

Want to join our Kingdom? 

Apply now! Positions are available in Barcelona, applications need to be in English. Our internships will last for 3 months, beginning in June 2025 and ending in September 2025. Please note: our application deadline is 17th of February, however we recruit on an ongoing basis, so early application is advised to avoid disappointment. 

 We are committed to working with and providing reasonable assistance to individuals with physical and mental disabilities. If you are a disabled individual requiring an accommodation to apply for an open position, please email your request to General employment questions cannot be accepted or processed here. Thank you for your interest 

About King 

 

At King, we're Making the World Playful. Heard of Candy Crush? We're the creators behind it. With game studios in Stockholm, Malmö, London, Barcelona and Berlin, and offices in Dublin, San Francisco, New York, and Malta, we have a 20-year history of delivering some of the world's most iconic games in the mobile gaming industry and are on a mission to level-up the little moments for our more than 200 million active monthly users. But we aren't just crushing it with candies, we're also behind Farm Heroes, Bubble Witch, Pet Rescue and loads of other sweet games. As a leading interactive entertainment company for the mobile world, King is part of Activision Blizzard, which was acquired by Microsoft. 

 

 

A great saga needs all sorts of heroes 

Making games is fun. Especially when you do it with people who share the same idea of what makes a good workplace, great. We design games for everyone, no matter where they are or who they are, and we employ all sorts of people from all kinds of backgrounds to bring them to life. Truth is, we simply cannot expect diversity in our players and originality in our games without first nurturing it in our people. A great saga needs all sorts of heroes.  

 

Making the World Playful  
Making the World Playful is what inspires us to create new experiences and raise the bar. It’s what makes King a place where we can all dream bigger, continue to add innovation to our games, broadening the portfolio and exploring new territories in mid- core and casual. We take the art and science of gaming to the next level through our curiosity for the unexplored, passion for games, respect for each other and love for our players – and we’re not afraid to have fun along the way. In fact, together with our parent company Activision Blizzard and experts around the world, we believe having fun is good for you. There has never been a better time to join us. We're dreaming bigger and see a world of possibilities ahead. If you share our passion, our values, and our hunger to shape the future, join us in Making the World Playful! 

About King

At King, we're Making the World Playful. Heard of Candy Crush? We're the creators behind it. With game studios in Stockholm, Malmö, London, Barcelona and Berlin, and offices in Dublin, San Francisco, New York, and Malta, we have a 20-year history of delivering some of the world's most iconic games in the mobile gaming industry and are on a mission to level-up the little moments for our more than 200 million active monthly users. But we aren't just crushing it with candies, we're also behind Farm Heroes, Bubble Witch, Pet Rescue and loads of other sweet games. As a leading interactive entertainment company for the mobile world, King is part of Activision Blizzard, which was acquired by Microsoft.

A Great Saga Needs All Sorts of Heroes

King strives to be a place where everyone can be their most authentic self. We recognize that diversity, equity and inclusion is a vital and continuous conversation, and that change only happens when we all come together. It’s our mission to build a diverse and inclusive Kingdom for our people, players, and community.

Making the World Playful

Making the World Playful is our mission – it’s the thread that connects our people, our players, and our passion for our games. Let’s face it, who doesn’t love a bit of fun?

Kingsters are seriously playful: creative thinkers who balance art and science to bring moments of magic to millions daily. But our players aren’t the only ones that can level-up. We’re always looking for ways to champion each other and make what’s already great, even better.

So, if this feels like a fun way to spend your days, and you share our passion, our values, and our hunger to shape the future, join us in Making the World Playful.

Applications need to be in English.
Discover King at

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About The Company

At King, we’re Making the World Playful. Heard of Candy Crush? We’re the creators behind it and loads of other sweet games like Farm Heroes.

Barcelona, Catalonia, Spain (On-Site)

London, England, United Kingdom (On-Site)

London, England, United Kingdom (On-Site)

New York, New York, United States (Hybrid)

New York, New York, United States (Hybrid)

New York, New York, United States (Hybrid)

New York, New York, United States (Hybrid)

Barcelona, Catalonia, Spain (On-Site)

California, United States (Hybrid)

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