Principal Software Engineer - AI Trainer - Freelance - 8-20hrs/week - Remote

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Portugal Remote Contract€193k–€331k / year Posted 30+ days ago

Above market. This role pays above the €125k median for similar EUR roles (17 comparable postings in our corpus).

Updated: 07 July 2026 Freelance | 8–20 hrs/week | Remote (EU/UK) Are you an accomplished Principal Software Engineer passionate about shaping the future of artificial intelligence? Join the company as a Freelance Principal Software Engineer – AI Trainer and leverage your technical expertise to enhance advanced AI models, all while enjoying the freedom of remote, project-based work. Key Responsibilities: * Review and refine AI-generated outputs related to software engineering, system architecture, and coding standards * Assess the accuracy and practicality of AI-driven recommendations on…

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