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Date:  Sep 22, 2026
Company: 
Location: 

Sofia, BG

Mobile Software Developer

While we’re searching for candidates externally, we know that we have some Super talent right here at Yettel. If you’re interested in the job, we strongly encourage you to apply! And if you know someone who would be a great fit, encourage them to explore the opportunity further.

The Mobile Developer will be part of the Service Development Team and will work closely with teams and departments across the company.

The impact you’ll make:

As a Mobile Developer, you will be responsible for designing, developing, and maintaining high-quality mobile applications. You will work closely with cross-functional teams to create intuitive, feature-rich, and high-performing mobile experiences. The ideal candidate will have a solid foundation in mobile development, an eye for detail, and a passion for delivering reliable and user-friendly applications.

What you’ll do:

  • Develop and maintain mobile applications with a strong focus on quality, performance, and user experience
  • Collaborate with UI/UX designers and backend developers to ensure seamless integration
  • Participate in code reviews and Agile ceremonies to support smooth and efficient delivery
  • Write and maintain tests to ensure application stability and quality
  • Support app deployment, releases, and version management across mobile platforms
  • Troubleshoot issues and continuously optimize application performance
  • Stay up to date with mobile development trends, technologies, and best practices, and suggest improvements

To thrive in this role, you’ll need:

  • Mobile Development Expertise: Proven experience designing and building high-quality mobile applications.
  • Platform Proficiency: Strong knowledge of mobile development technologies, frameworks, and related development tools.
  • UI/UX Implementation: Good understanding of mobile design principles and the ability to create intuitive and responsive interfaces.
  • API Integration: Experience integrating mobile applications with backend services via RESTful APIs.
  • Testing & Quality Assurance: Experience with mobile testing frameworks and practices to ensure application stability and quality.
  • Version Control & Collaboration: Confidence working with Git and collaborating effectively across teams.
  • App Deployment: Knowledge of mobile application deployment and release processes.
  • Communication & Teamwork: Strong communication skills and the ability to work effectively with cross-functional teams.
  • Optimization: Focus on optimizing applications for performance, scalability, stability, and reliability.

What’s in It for you:

Financial & Time-Off Perks

  • 21 days of paid leave (birthday included!)
  • +4 bonus days if you use all your time off
  • 1-month sabbatical every 5 years
  • Annual bonus based on performance
  • Food & gift vouchers every month
  • Travel allowance

Mobile & Tech Goodies

  • Unlimited mobile & internet
  • Exclusive discounts on devices and accessories

Health & Wellbeing

  • Premium health insurance
  • Wellbeing support: in-house psychologist, sports at the office, expert talks
  • Discounted Multisport or Coolfit cards

Growth & Learning

  • Top online learning platform access
  • Supportive team and manager
  • Your ideas shape what we build

Purpose & Culture

  • Do work that matters — we create real impact
  • We're serious about sustainability and social responsibility

 

A Tip from Us:

  • AI is great, but this part is all you! We encourage AI at work, but for your application, we’d love to hear your own thoughts, experiences, and motivation.
  • You don’t need to tick every box! If this role excites you, go for it! We value potential over perfection. 

 

Join Yettel now by sending us your up-to-date CV. 


Only shortlisted applicants will be contacted with information about next steps of our selection process.


Applicants are treated with strict confidentiality following the applicable personal data protection legislation.

Apply now »