Nextmark

Mobile Application Developer

Contractor · Remote · 10 openings

In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters.

Key Responsibilities

  • Develop, test, and implement mobile applications using cutting-edge technologies like React Native and Flutter.
  • Collaborate with cross-functional teams to define, design, and ship new features.
  • Optimize mobile applications for maximum performance, scalability, and user experience.
  • Integrate RESTful APIs to connect mobile applications to back-end services.
  • Participate in code reviews to ensure high-quality and maintainable code.
  • Stay up-to-date with the latest industry trends, technologies, and best practices.
  • Work within an Agile development environment to deliver high-quality software iteratively.

Required Skills & Qualifications

  • Proven experience in iOS Development with Swift and Android Development with Kotlin or JAVA.
  • Knowledge of cross-platform development using React Native or Flutter.
  • Strong understanding of UI/UX principles to create visually appealing and user-friendly applications.
  • Experience with REST APIs and integrating with back-end services.
  • Excellent written and verbal communication skills.
  • Ability to work independently in a remote setting and manage time effectively.

$30–$80/hr

Remote