Fullstack Developer - Development Services

1 Week ago • 3-5 Years • Full Stack Development • Backend Development

Job Summary

Job Description

King seeks a Full-Stack Developer with a strong front-end focus to join their Development Services team in Barcelona. The role involves building user-friendly tools for Player Support agents, optimizing across the full stack (primarily front-end), and delivering clean, scalable code. Responsibilities include developing front-end centric tools, optimizing across the stack, writing well-documented code, collaborating effectively within a team, and striving for mastery in front-end development. The ideal candidate will possess expertise in JavaScript, TypeScript, Node.js, Java, and experience with backend development, legacy code modernization, and build tools like Gradle. A user-centric mindset and experience with agile methodologies are highly valued.
Must have:
  • Strong front-end skills (JavaScript, TypeScript, Node.js)
  • Backend proficiency (Java, RESTful APIs)
  • Legacy code modernization experience
  • Full-stack development experience
  • Agile methodology familiarity
Good to have:
  • NoSQL database experience
  • Big Data or scalable cloud computing experience
  • Python, C++, or other language skills

Job Details

Craft:

Technology & Development

Job Description:

We’re on the lookout for a Full-Stack Developer with a strong focus on front-end skills to join our Development Services organization. In this role, you'll work directly with our Innovation and Development team to create powerful, user-friendly tools for Player Support and its agents, ensuring the highest quality customer-centered support for our players.

This role will suit a mid-level developer comfortable with both front-end and back-end work, but with an extra emphasis on front-end capabilities. We need someone great at crafting responsive, seamless user interfaces and who also isn’t afraid to dive into different coding languages and technologies as needed. The ideal candidate has a blend of practical experience and a willingness to tackle unfamiliar challenges.

We’re after someone versatile and adaptable, ready to create new tools from scratch and capable of delivering code that is both high-scale and real-time. You’ll be part of a team committed to ideating and executing impactful improvements, implementing tools that enhance team capacity, shorten delivery times, and reduce costs.

If you’re motivated by continuous learning, take pride in building solutions that make a difference, and can thrive in a demanding, professional team, we’d love to hear from you.

Your role within our Kingdom:

  • Develop Front-End-Centric Tools: Build engaging, high-quality tools that prioritize usability, focusing especially on Player Support and empowering agents to deliver a top-notch player experience.

  • Optimize Across the Stack: While front-end work is primary, contribute across both client and server sides to resolve operational inefficiencies and modernize legacy code, ensuring long-term sustainability.

  • Deliver Clean, Well-Structured Code: Produce robust, well-documented code, adhering to best practices for scalability and maintainability.

  • Knowledge Sharing and Collaboration: Actively share insights and learn from diverse projects in a highly collaborative, open environment.

  • Commit to Mastery: Strive to be a leading expert in your areas of focus, especially front-end development, while staying versatile and adaptable.

  • Build Scalable, Reusable Tools: Design and maintain scalable, data-driven tools that are built to last, with a focus on reusable components to serve Development Services and other departments.

Skills to create thrills:

Knowledge & Skills:

  • Front-End Expertise: Strong skills in JavaScript, TypeScript, and Node.js for creating responsive, user-friendly interfaces that prioritize a seamless user experience.

  • Back-End Proficiency: Solid experience in backend development, particularly with Java for building and maintaining RESTful web services and JSON-RPC APIs.

  • Adaptability with Legacy Code: Comfortable tackling and modernizing legacy code, ensuring it meets current standards in maintainability and efficiency.

  • Full-Stack Savvy: Experience across both client-side and server-side development, giving you a holistic view of application architecture and functionality.

  • Build Tools: Proficiency with Gradle or similar build systems.

  • UNIX Familiarity: Comfortable working in UNIX environments, with strong command-line skills.

  • Computer Science Fundamentals: Solid understanding of core principles, including design patterns, object-oriented programming, concurrency, and scalability.

Key Attributes:

  • User-Centric Mindset: A deep focus on usability, maintainability, and quality, creating tools that last and grow with user needs.

  • Perspective on UX: Ability to empathize with the end user, building UIs that make workflows simpler, faster, and more intuitive.

Nice to Have:

  • Data and Scalability: Experience with NoSQL databases, Big Data, or scalable cloud computing infrastructures.

  • Agile Enthusiast: Experience working in an Agile environment or a genuine interest in agile methodologies.

  • Additional Language Skills: Familiarity with Python, C++, or other programming languages is a plus.

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.

London, England, United Kingdom (Hybrid)

Barcelona, Catalonia, Spain (On-Site)

Barcelona, Catalonia, Spain (On-Site)

London, England, United Kingdom (On-Site)

Barcelona, Catalonia, Spain (On-Site)

London, England, United Kingdom (On-Site)

Barcelona, Catalonia, Spain (On-Site)

Barcelona, Catalonia, Spain (On-Site)

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