Since our launch in 2012, we've been on a mission: to make digital identification simple and secure for everyone, and everything.

In that time, we've expanded constantly, and been joined by over 180 incredible people, all with the same vision.

Our technology is now being used by hundreds and thousands of users worldwide, including some of the world's leading financial institutions.

And this is just the beginning.

Over the next year, Callsign will double in size as we continue our mission to make every web, mobile and physical interaction seamless and secure.

We can't do that alone, though. That's why we're looking to hire the brightest, most inquisitive minds out there: the people who want to help us change the rules of identity ­- and have the skills and passion to make this mission a reality.

Does that sound like you? Let's talk.

Key Responsibilities

• Develop and maintain high-quality cross-platform mobile applications using React Native, Flutter, and Cordova
• Collaborate with designers, product managers, and other developers to create seamless and user-friendly mobile experiences
• Write clean, maintainable, and efficient code
• Troubleshoot, debug, and optimize application performance
• Stay up-to-date with the latest industry trends and technologies to ensure our apps are current and competitive
• Participate in code reviews and provide constructive feedback to peers
• Contribute to the continuous improvement of our development processes and practices
  
  
  

Requirements

• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent work experience
• 3+ years of experience in mobile app development with a focus on cross-platform frameworks
• Proficiency in React Native, Flutter, and Cordova
• Strong understanding of mobile app architecture and design patterns
• Experience with RESTful APIs and third-party libraries
• Familiarity with version control systems (e.g., Git)
• Excellent problem-solving skills and attention to detail
• Strong communication and teamwork abilities
• Ability to work independently and manage time effectively
  
  
  

Preferred Qualifications:

• Experience with native mobile development (iOS/Android)
• Knowledge of Agile/Scrum methodologies
• Familiarity with CI/CD pipelines
• Contributions to open-source projects or a portfolio of published apps
  
  
  

Benefits

• Health Insurance
• Visa costs including 1 month paid hotel stay on arrival
• Annual Airfare Allowance for the home country
• 3 months full pay maternity leaves & 2 weeks full pay paternity leaves
• 25 days of annual leave + Callsign Bank Holiday (not included in holiday allowance)
• Competitive Salary
• Gratuity as EOSB