Senior Back-end Developer - Innovation Team in Barcelona


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Job Description

King operates mobile games at a massive scale. With titles like Candy Crush, Bubble Witch and Farm Heroes our code runs on hundreds of millions of devices across the globe.

We are looking for Java Backend Developers that will help our Innovation and Development team in Dev Services fulfill our primary objective to pioneer new products, processes and systems at a company level. Our team, by leveraging our diverse knowledge and skill sets, ideates and executes improvements implementing tools that impact other teams capacity, delivery time and cost. We collaborate closely with Player Support, providing them the tools and systems needed for modern user centric communications with our players. We are looking for a mid- level developer able to build complex, high- scale, real- time systems, with some practical experience, and the drive and enthusiasm to succeed in a demanding and professional team environment.  

Your role within the Kingdom

If you want to create amazing user experiences and entertainment for millions of players to enjoy on the go then this is the right job for you. You will be part of a highly competent team of developers in the creation of large scale systems for Player Support, Globalization, Game Studios and King in general, not only delivering high quality and well- structured code but doing so with a user’s point of view.


We know that the continued success of King depends on preserving the amazing culture we have, so ‘fit’ is extremely important. We work in a small, collaborative Agile team where everyone is involved in coming up with great features and ownership of the outcome is key.


We are problem solvers, constantly reviewing how and why we do things and learning from each other. We are experimental, trying out new tech and ideas and willing to take risks to drive the entire industry forward. We are sociable and fun, and we like to hang out together. We are passionate, some might even say quirky, and while we love what we do, our lives are about more than work.

Our vision is to work as a B2B organization, making sure that the platform we provide is compatible with all the different games and teams at King.

Your responsibilities will include:

  • A team player who likes to discuss solutions and ideas.

  • Striving to be a genius in your area of expertise.

  • Helping the team to migrate all our on- prem systems to the cloud

  • Build valuable tools to support all departments within Development Services, specially Player Support

  • Develop and maintain robust, scalable, reusable, data driven tools

  • Working closely with King’s internal Java server frameworks

  • Deliver high quality and well- structured code

  • Share knowledge and help colleagues

As a new member of the team we offer a unique opportunity to be involved hands on and learn as you go. The wide responsibilities of the team give a wide array of challenges to conquer and King offers many opportunities for training and personal development.

Skills to create thrills:

You have great passion for programming and a solid sense of quality and polish. As a developer you are also analytical and genuinely interested in understanding the whole tech stack. You must have excellent interpersonal and communication skills and be a strong team player, able to work in a fast paced, demanding yet fun professional environment.


  • Experience in Java, databases and web development in general.

  • Experience in cloud computing and services, Google Cloud if possible

  • Used to UNIX environments.

  • No stranger to web protocols, application servers and web servers.

  • Strong Computer Science fundamentals, design patterns and Object Oriented knowledge

  • Design, architect, test and implement features in core services

  • Deliver high quality and well- structured code

  • Knowledge of concurrency and scalability

  • Excellent teamwork skills, flexibility, and ability to handle multiple tasks

  • Excellent communication skills in English

Bonus points

  • NoSQL and BigData experience

  • Knowledge of scalable cloud computing infrastructure

  • Familiar with HTML, CSS, Javascript, Bash.

  • Work in an Agile environment, or you are interested in agile development.

  • Experience with any other programming languages, preferably Python or C++

About King

King is the game developer behind the world- famous Candy Crush franchise, as well as mobile game hits including Farm Heroes, Bubble Witch and Pet Rescue. Candy Crush is the top- grossing franchise in US app stores, a position it has held for the last two years, and King’s games are being played by 245 million monthly active users as of Q3 2021. King, which is part of the Activision Blizzard group since its acquisition in 2016, employs nearly 2,000 people in game studios in Stockholm, Malmö, London, Barcelona and Berlin, and offices in San Francisco, New York, and Malta.

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!

Applications need to be in English.


About King

  • Games

  • Privately Held

  •  London, United Kingdom

  • 1001-5000 employees

  • 2003

King is a leading interactive entertainment company for the mobile world, with people all around the world playing one or more of our games.

We have developed more than 200 fun titles, and offer games in over 200 countries and regions. Our franchises include Candy Crush, Farm Heroes, Pet Rescue and Bubble Witch. We have 340 million average monthly unique users, as of second quarter 2015, across web, social and mobile platforms. 

At King, we design games with a broad appeal, which allow people to play for a moment, then move on with their day and pick up their game later. Our games are also synchronized across platforms, allowing players to switch seamlessly between devices and platforms and continue their game wherever they left off, so they can play anywhere, any time and on any device. For us, this is encapsulated in the idea of bitesized entertainment. 

King has game studios in Stockholm, Bucharest, Malmö, London, Barcelona, Berlin, Singapore, and Seattle, along with offices in San Francisco, Malta, Seoul, Tokyo and Shanghai.

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