This posting is no longer on the employer's careers site (last seen 04 Sept 2026 16:04). It stays here for reference; the apply link may no longer work.

Backend Developer - AI Trainer (Spain)

Anyone AI

Apply at Anyone AIOpens the employer's own posting.

Where: On-site · Madrid
Salary: €94k–166k
Technologies: JavaPythonTypeScriptJavaScriptC#
First sniffed: 25 Aug 2026 08:36 · open 70 days
Last verified: 04 Sept 2026 16:04 · since closed
Source: Company careers system via adzuna

Anyone AI is recruiting skilled Backend Developers to work on a project with a leading AI lab. Qualifications: Advanced professional written proficiency in English 3–7 years of professional software engineering experience Strong proficiency in Python and JavaScript/TypeScript; working knowledge of Java, C#, or Go Backend or full‑stack development experience in production systems Experience with testing frameworks (e.g., pytest, Jest, JUnit, xUnit, Go testing) Proven ability to debug and navigat…

Apply at Anyone AI