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Senior Software Engineer

Freelance / Selbstständig

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)

Veröffentlicht am 17. Juli 2026

  • Vertragsart

    Freelance / Selbstständig

  • Orte

    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

    Ab sofort / nach Vereinbarung

  • Gehalt

    50 USD - 100 USD / Stunde

  • Homeoffice/Telearbeit

    Nicht angegeben

JT AI Labs illustration

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.

Bewerbungsfrist

Solange das Stellenangebot online ist

Studienniveau

Master-Niveau, MSc oder äquivalent; Promotion

Funktion

Technologie

Weitere Informationen über das Unternehmen

JT AI Labs

Use your expertise to train leading AI models