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

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

Freelance No working from home possible
Mindrift

At a Glance

  • Tasks: Collaborate on AI projects, code generation, and complex data annotation.
  • Company: Mindrift connects specialists with innovative AI projects.
  • Benefits: Earn up to $44/hour, work remotely, and enhance your portfolio.
  • Other info: Fully remote role with flexible hours to fit your lifestyle.
  • Why this job: Join cutting-edge AI projects and influence future technology.
  • Qualifications: 3+ years in Java, advanced English, and strong coding skills.

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.

What we do

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.

Although every project is unique, you might typically:

  • 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.

How to get started

Simply apply to this post, qualify, and get the chance to contribute to projects that match your technical skills, on your own schedule. From coding and automation to fine-tuning AI outputs, you’ll play a key role in advancing AI capabilities and real-world applications.

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.

Benefits

Why this freelance opportunity might be a great fit for you?

  • Get paid for your expertise, with rates that can go up to $50/hour depending on your skills, experience, and project needs.
  • Take part in a part-time, remote, freelance project that fits around your primary professional or academic commitments.
  • Work on advanced AI projects and gain valuable experience that enhances your portfolio.
  • Influence how future AI models understand and communicate in your field of expertise.

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

Mindrift is an exceptional employer for freelance software developers, offering the flexibility of remote work while engaging in cutting-edge AI projects that significantly enhance your professional portfolio. With competitive pay rates and the opportunity to influence the future of AI model understanding, Mindrift fosters a collaborative and innovative work culture that prioritises personal growth and adaptation to new technologies.

Mindrift

Contact Details:

Mindrift Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Freelance Software Developer (Java) - Quality Assurance (AI Trainer)

Make Your Portfolio Shine

As a freelancer in software development, your portfolio is your bread and butter. Showcase not only your completed projects but also your coding skills on platforms like GitHub or GitLab. This visibility can lead to clients reaching out to you directly!

Join Developer Communities

Get involved in developer communities like Stack Overflow or Reddit's r/programming. Contributing to discussions, sharing your knowledge, or even helping others can expand your network and lead to freelance opportunities. Plus, it keeps you in the loop about what’s trending in software development.

Freelance Platforms Are Your Friend

Sign up for popular freelance platforms such as Upwork or Freelancer. They’re filled with people looking for talent like yours! Don’t forget to personalise your pitch to each potential client, highlighting how your unique skills can solve their specific problems.

Utilise Your Network

Don’t hesitate to reach out to your existing contacts - you never know who might need your services or can refer you to someone who does. Personal connections can lead to more reliable gigs than cold applications. And we're here to help too! If you're looking for freelance opportunities, check out opportunities listed on our website.

We think you need these skills to ace Freelance Software Developer (Java) - Quality Assurance (AI Trainer)

Java 17+
Streams API
Concurrent Programming
JUnit 5
TestNG
Mockito
TestContainers

Some tips for your application 🫡

Showcase Your GitHub Projects:When applying for a freelance software engineering gig at Mindrift, make sure to include your GitHub link in your application. Highlighting your code repositories, contributions to Open Source, and any personal projects can really set you apart and give us insight into your skills and coding style.

Tailor Your CV with Relevant Skills:In software development, the specifics matter! Make sure your CV lists the programming languages and technologies you excel at. Focus on the ones that align with the projects Mindrift is working on. Listing your tech stack clearly will help us understand how you fit into our team.

Include a Portfolio of Your Work:A solid portfolio is a must when applying for freelance roles. Include links to any apps, websites, or software you've developed. Highlight any projects that reflect a strong user experience, efficiency, or innovative solutions—this is your chance to shine and show us what you can bring to the table!

Mention Your Availability and Rates:Since this is a freelance role, we want to know when you’re available and what your rates are like! Be upfront about your typical work hours and project timelines. This transparency will help us see if we can sync up for future projects at Mindrift.

How to prepare for a job interview at Mindrift

Showcase Your Code Wizardry

Since you're going for a freelance role in software engineering, have a solid portfolio ready to flaunt your best work. Include projects that highlight your coding skills, frameworks you excel in, and any problem-solving feats you've pulled off. This is your chance to shine, so choose pieces that reflect your unique style and expertise!

Prepare for Technical Challenges

Freelance gigs often involve tech assessments or coding challenges, so be ready to tackle some hands-on problems. Brush up on common algorithms, data structures, and any languages/frameworks relevant to the role at Mindrift. Being comfortable with platforms like HackerRank or LeetCode can give you an edge and showcase your skills under pressure!

Be Clear About Your Rates and Flexibility

As a freelancer, be prepared to discuss your rates upfront. It's crucial to communicate your pricing structure clearly and whether you're open to negotiation. Do your homework on industry standards to ensure you pitch a fair and competitive rate that reflects your skills and experience!

Understand Their Tech Stack

Before the interview, get familiar with the tools and technologies used at Mindrift. Whether it's a particular framework or a specific coding methodology, being knowledgeable about their tech stack not only shows your interest but also helps you present how you could fit seamlessly into their existing projects. Demonstrating you’ve done your homework can set you apart from other candidates!