Mobile App Developer

Salary: $112000 - 225000 per year Requirements: We require native or bilingual-level fluency in English. We need proficiency in at least one of the following languages or frameworks: JavaScript, TypeScript, Python, C, C#, C++, React, Go, Java, Kotlin, or Swift. We require strong writing ability and excellent grammar. We require a bachelors degree, completed or currently in progress. Previous experience as a Software Developer, Coder, Software Engineer, or Programmer is preferred. This role is available only to candidates in the US, Canada, UK, Ireland, Australia, or New Zealand. Responsibilities: We design and solve a wide range of coding challenges used to train AI systems. We write clean, high-quality code examples and clear explanations. We assess AI-generated code for correctness, efficiency, and readability. We deliver feedback that helps improve the next generation of AI models. We work on programming tasks such as building apps, creating coding problems, and analyzing data. We complete a short assessment to qualify for paid work on our platform. Technologies: AI C# Support Java JavaScript Kotlin Machine Learning Python React Swift TypeScript Mobile More: We are Lumen Dynamics, a growing team of more than 100,000 professionals across front-end, back-end, full-stack, machine learning, and other engineering disciplines, all contributing to the advancement of AI. This is a fully remote contract role with flexible scheduling, allowing us to choose projects and working hours that fit our availability. We offer competitive hourly pay of up to $100+ USD, with higher-paying opportunities available for strong performance. We support remote work from the US, Canada, UK, Ireland, Australia, and New Zealand, and payment is handled via PayPal. Our work focuses on shaping intelligent systems through hands-on coding, evaluation, and feedback. last updated 28 week of 2026