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Senior Software Engineer

Freelance/Zelfstandige

Austria (Austria), Belgium (Belgique), Croatia (Croatia), Denmark (Denmark), France (France), Finland (Finland), Germany (Germany), Italy (Italy), Luxembourg (Luxembourg), Norway (Norway), Portugal (Portugal), Spain (Spain), Sweden (Sweden), Switzerland (Switzerland), United Kingdom (United Kingdom)

Gepubliceerd op 17 juli 2026

  • Contract

    Freelance/Zelfstandige

  • Locaties

    Austria (Austria), Belgium (Belgique), Croatia (Croatia), Denmark (Denmark), France (France), Finland (Finland), Germany (Germany), Italy (Italy), Luxembourg (Luxembourg), Norway (Norway), Portugal (Portugal), Spain (Spain), Sweden (Sweden), Switzerland (Switzerland), United Kingdom (United Kingdom)

  • Startdatum

    Zo snel mogelijk

  • Loon

    50 USD - 100 USD / per uur

  • Thuiswerken

    Niet gespecificeerd

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Job Title: Senior Software Engineer


Job Type: Contractor (~15 hrs a week)


Location: Remote


Job Summary: In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters.


We are seeking strong Software Engineers to join our customer's team with expertise in Python3, Java, Rust, Go, C++, or TypeScript. This is a unique opportunity to directly impact the next generation of AI by leveraging your advanced engineering skills in a dynamic, remote setting.


As an expert you will be creating Reinforcement Learning Environments which test and AI model’s ability to solve complex software engineering problems related to fixing code, creating features, refactoring code and optimizing performance. You will be tasked with creating a reproducible environment and golden reference solution for the problem.



Required Skills and Qualifications:

  1. Proficiency in Python3, Java, Rust, or TypeScript, with additional experience in C++ or Go considered a strong asset.
  2. Deep understanding of algorithms, data structures, and performance tuning.
  3. Demonstrated experience in debugging complex software issues and delivering maintainable solutions.
  4. Strong background in feature development and codebase refactoring.
  5. Proven ability to optimize software for performance and scalability.
  6. Exceptional written and verbal communication skills, with a keen attention to detail.
  7. Track record of success in collaborative, cross-functional teams, ideally in remote settings.



Preferred Qualifications:

  1. Previous experience working on large-scale, distributed codebases.
  2. Familiarity with modern AI or machine learning systems is a plus, though not required.
  3. Background in participating in rigorous code reviews and contributing to the development of software best practices.


Process:

  1. Apply to the role, filling out the screening questions
  2. Complete AI interview (aprox. 30 minutes)
  3. Technical Assessment (Tentative)
  4. Hiring Manager review


Compensation Structure

Compensation is output-based; experts are paid per task that meets the project specifications. The time required to complete work may vary depending on the expert’s experience and workflow. Minimum submission requirements apply. Experts must submit a minimum of tasks per week.


Start Timeline & Availability

We typically fill roles within 48 hours and are looking for experts ready to jump in right away. If selected, we expect you to start your first tasks within 24–48 hours of completing onboarding.

Uiterste sollicitatiedatum

Zolang de vacature online is

Opleidingsniveau

Master-niveau of gelijkwaardig; Doctoraat/PhD

Jobdomeinen

Technologie

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JT AI Labs

Use your expertise to train leading AI models