Freelance Software Developer

6 days ago


London, Greater London, United Kingdom Mindrift Full time

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 $44/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.


  • London, Greater London, United Kingdom Mindrift Full time £38,400 - £49,920 per year

    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...


  • London, Greater London, United Kingdom Mindrift Full time

    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...


  • London, Greater London, United Kingdom Mindrift Full time £30,000 - £40,000 per year

    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...


  • London, Greater London, United Kingdom Mindrift Full time

    This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates.At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI.What we doThe Mindrift platform connects specialists with AI projects from major tech...


  • London, Greater London, United Kingdom Mindrift Full time

    This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates.At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI.What we doThe Mindrift platform connects specialists with AI projects from major tech...


  • London, Greater London, United Kingdom Axiom Software Solutions Limited Full time £100,000 - £120,000 per year

    Job Title: Lead Software DeveloperLocation: London, UKJob Type: B2b Contract Duration: 6-12 months with Inside IR35Working Mode: Hybrid (Twice in a week mandatory)Need UK citizens only.Candidates need have active SC clearance.Job Description: Front End Skill Set Vue Js Responsive Web Development HTML CSS Node JS JavaScript Back End Skill Set Knowledge of C#...


  • London, Greater London, United Kingdom Red Badger Full time £80,000 - £150,000 per year

    Joining a new discovery project > leading into delivery after approximately 1 monthFull stack generalist role Start date ASAPDuration 6 months (Likely to extend)2 days / week in person working (London)Joining a cross functional team of 8Immediate InterviewsThe best bit about Red Badger is, of course, the team. We are really proud of our people; we support...

  • Delphi Developer

    2 weeks ago


    London, Greater London, United Kingdom Test Yantra Software Solutions Private Limited Full time £26,000 per year

    Role OverviewWe are looking for a Senior Delphi Developer with deep expertise in Delphi 10.4 or later, strong understanding of software development life cycle (SDLC), and hands-on experience in Oracle PL/SQL and RDBMS. The ideal candidate will be responsible for designing, developing, and maintaining enterprise-grade business applications, while also...


  • London, Greater London, United Kingdom Axiom Software Solutions Limited Full time £80,000 - £120,000 per year

    Job Title: Lead Software Developer-AWSLocation: London, UKJob Type: B2b Contract Duration: 6-12 months with Inside IR35Working Mode: Hybrid (Twice a week mandatory)Need UK citizens only.Candidates need have active SC clearance.Job Description: AWS CLI and Infrastructure as Code frameworks such as Terraform). Static Code Analysis using Liniting. AWS Core...


  • London, Greater London, United Kingdom Red Badger Full time £100,000 - £120,000 per year

    £competitive day rateOutside IR35.Ideal start date Monday 1st September3 months initial contract - likely to extend a further 6+ monthsInitially Rebuilding core infrastructure for a large wealth management company, then building main core products (individuals and wealth managers making investments and tracking port...