Mindrift - Freelance Software Developer (Java) - Quality Assurance (AI Trainer)

Developer is needed in British Columbia, Canada.

Client: Mindrift

Location: British Columbia, Canada

Contract: undefined

Job Description

This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI.

The Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe.

About the Role: GenAI models are improving very quickly, and one of our goals is to make them capable of addressing specialized questions and achieving complex reasoning skills. If you join the platform as an AI Tutor in Coding, you’ll have the opportunity to collaborate on these projects.

Typical tasks may include:

• Code generation and code review
• Prompt evaluation and complex data annotation
• Training and evaluation of large language models
• Benchmarking and agent-based code execution in sandboxed environments
• Working across multiple programming languages
• Adapting guidelines for new domains and use cases
• Following project-specific rubrics and requirements
• Collaborating with project leads, solution engineers, and supply managers on complex or experimental projects

Note: Flexibility and quick adaptation to new requirements are essential.

Requirements

• You hold a Bachelor’s or Master’s Degree in Computer Science, Software Engineering, Software Development, Computer Engineering, Mobile App Development, Cloud Computing, Data Science, Big Data, or other related fields.
• You have at least 3 years of professional experience in Java 17+, including streams API and concurrent programming.
• Your level of English is advanced (C1) or above.
• Hands-on experience with JUnit 5, TestNG, Mockito, and TestContainers.
• Proficiency with build tools (Maven, Gradle), IDEs (IntelliJ IDEA), and CI/CD pipelines (Jenkins, GitHub Actions, GitLab CI).
• Experience with the Spring ecosystem (Spring Boot, Spring Data, Spring Security), JPA/Hibernate.
• Strong understanding of JVM internals, garbage collection, performance optimization, and design patterns.
• Experience with messaging systems (Kafka, RabbitMQ) and microservices architectures.
• Practical use of AI-assisted tools for refactoring, performance analysis, and test generation.
• Familiarity with cloud platforms (AWS, Azure), containers, and Kubernetes.
• Strong skills in JVM profiling (JProfiler, VisualVM) and debugging.
• You are ready to learn new methods, able to switch between tasks and topics quickly, and sometimes work with challenging, complex guidelines.
• Our freelance role is fully remote, so you just need a laptop, internet connection, time available, and enthusiasm to take on a challenge.