Resume

Senior Unity Developer with lots of experience in developing and publishing mobile games. Released over 20 casual and hypercasual titles.
Passionate about delivering high-quality, optimized, engaging gameplay experiences, bringing both technical expertise and strong collaboration skills within multidisciplinary teams.

Love learning new skills and adapting to unknown architectures and code. Good problem solving skills.

Experience

Senior Unity Game Developer

2023 - Present

Lab Cave Games, Madrid, Spain

Main senior developer of ZooCraft.

  • Led development of new features and UI systems, delivering updates that improved user retention and playtime.
  • Optimized performance and refactored core architecture, reducing memory usage and improving stability and loading times.
  • Integrated third-party SDKs (IAP, ads, analytics), ensuring reliable monetization and data-driven approach to decisions and new features.
  • Mentored other senior developers and improved department workflows, establishing best practices, code reviews, and agile task organization.
  • Collaborated closely with design, QA, and support teams to improve player satisfaction.
  • Contributed to the hiring process, helping select and onboard new team members to scale the studio’s capabilities.

Unity Game Developer / One man team

2015 - 2025

Pepi Pepi Pepi (self employed), Madrid, Spain

Indie developed with lots of published mobile games (casual & hypercasual).

  • Developed and published more than 20 mobile titles in the AppStore, Google Play and Amazon, achieving lots of downloads in the casual and hypercasual mobile market.
  • Managed the full development cycle — from ideation, prototyping and gameplay mechanics to UI, graphics, level design and publishing.
  • Implemented modular and reusable code architectures, accelerating production and reducing time-to-market for new titles.
  • Designed and executed monetization strategies (Ads & IAP), integrating multiple SDKs and analytics tools to maximize revenue and retention.
  • Designed lots of game reskins to improve organic downloads through ASO strategies.
  • Partnered with top publishers (Voodoo, Lion Studios, YSO Corp, Kwalee, Boom Hits), collaborating on A/B testing, and user acquisition campaigns.

Senior Sharepoint C# Developer

2013 - 2014

IECISA, Madrid, Spain

Made the main intranet of Red Eléctrica company in Sharepoint 2013.
The project was focused on the new client side object model, search and display templates.

Senior Sharepoint C# Developer

2011 - 2013

Marketforce UK, London, UK

Designed and implemented new modules and websites for the intranet, using Sharepoint 2010.

Sharepoint C# Developer

2007 - 2011

IECISA, Madrid, Spain

ASP.NET C# Developer

2006 - 2007

Technoconsulting, Madrid, Spain

Education

Android Apps Development

2012

UNED, Online

C# .NET Microsoft Certified Application Developer (MCAD)

2006

C.A.S. Training, Madrid, Spain

Contact

  • Madrid, Spain
  • +34 676 32 60 62
  • ivan.calle.ca@gmail.com

Skills

  • Unity
  • C#
  • Game design
  • UI Design
  • Monetization & UA
  • Analytics

  • Visual Studio
  • Git
  • Jira

  • Love learning new skills
  • Problem solving
  • Teamwork

Languages

  • English: Fluent professional
  • Spanish: Native