This job posting has expired
Expired on April 1, 2026
Freelance Senior Software Developer (Kotlin) - AI Trainer
Job Description
Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. This opportunity is a good fit for Senior Kotlin software developers open to part-time, non-permanent projects. You will design and maintain automated tests, collaborate with developers to resolve functional and UI issues, and apply professional judgment to assess AI responses.
Responsibilities
- Design and maintain automated tests to ensure quality, performance, and reliability of Kotlin and Android applications
- Collaborate with developers to identify, reproduce, and resolve functional, performance, and UI issues
- Define and improve quality standards across build pipelines, ensuring smooth CI/CD integrations
- Monitor app behavior in production and use data-driven insights to guide testing priorities
- Apply professional judgment to assess AI responses
Qualifications
- Degree in Computer Science, Software Engineering or related fields
- 5+ years of Kotlin including coroutines, extension functions, and sealed classes
- 3+ years of Android/JVM development experience
- Familiarity with JUnit 5, Kotest, MockK, and Android testing (Espresso, Robolectric)
- English proficiency - B2
- Stable internet connection