Game Backend Developer

• Design, develop, and maintain backend services for Soul Breach and other titles, ensuring scalability, security, and high performance.
• Build and maintain RESTful APIs to support gameplay features such as player accounts, progression, matchmaking, live events, economy systems, and analytics pipelines.
• Collaborate closely with client-side developers and game designers to integrate and support content-driven and live service features.
• Ensure data integrity, consistency, and scalability across all backend systems and internal support tools.
• Guarantee data privacy and secure handling of user information in line with industry best practices and compliance regulations.
• Set up and maintain server infrastructure, CI/CD pipelines, and cloud services.
• Contribute to technical decision-making, backend architecture planning, and long-term scalability strategies.
• Meet development deadlines and deliverables set by the production team, ensuring clear and proactive communication on progress.

• 3+ years of experience as a Backend Programmer, preferably in the game industry.
• Proficiency in Kotlin, or solid experience with related languages such as Java, Scala, or C#.
• Experience designing and maintaining RESTful APIs, and working with cloud-based environments, especially AWS.
• Familiarity with PlayFab or similar Backend-as-a-Service platforms used in game development.
• Solid understanding of databases, data modeling, and backend performance optimization.
• Experience with user authentication, session management, and persistent game state systems.
• Proficient with Git and comfortable working with CI/CD pipelines for deployment and automation.
• Ability to write clean, maintainable, and well-documented code.
• Strong problem-solving and debugging skills, with an autonomous and proactive approach.
• Excellent communication and critical thinking skills.
• Fluent in Spanish (spoken and written), as our daily communication is in Spanish.
• Passion for games, especially RPGs and collectible mechanics.

Nice to Have

• Previous experience working on free-to-play mobile or cross-platform games.
• Experience with Unity and a good understanding of client-server communication.
• Knowledge of networking principles, latency management, and multiplayer architectures.
• Familiarity with backend-driven systems for monetization, events, and player progression.
• Hands-on knowledge of JIRA, Confluence, and Agile workflows (Scrum/Kanban).
• Fluency in English (for documentation and potential cross-border collaborations).

• Immediate start.
• Full-time permanent contract with flexible working hours.
• Hybrid or fully remote setup (within Spain).
• Competitive salary, adjusted to experience and scope of responsibilities.
• A passionate, senior, and multidisciplinary team that values creativity, autonomy, and excellence.
• A studio culture built on quality, collaboration, and respect for both players and developers.

If you are interested and would like to join our team, please send your CV and a link to your portfolio (if available) to jobs@cosmicspell.com, using the subject line: Backend Developer - [Your Name]. We look forward to discovering what you can bring to the world of Soul Breach. Cosmic Spell is a forward-thinking video game development studio known for its innovative design approach and distinctive visual style. Founded in 2021 in Valencia by a team of entrepreneurs with over 20 years of experience in successful startups across the video game and entertainment sectors, we are backed by No Spoon, a renowned Venture Builder that fosters innovation and growth. Our team is not just a group of developers - we are a multidisciplinary collective of programmers, designers, artists, gamers, streamers, journalists, and producers, all working together to create engaging, high-quality games. We strive to develop immersive gaming experiences that connect with players on a deeper level, ensuring our products have a lasting impact within and beyond the gaming industry.