Isidor

Intern

London

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Seniority: Internship
Country: GB
Work mode: On-site / unstated
First seen by hirly: 8 Sept 2026

Derived automatically from the posting. Upload your resume above to see how the role scores against it.

the posting

Isidor is looking for an intern to join our London office (Soho) for immediate start, full-time, in-person. Required background is in investment banking and/or private equity (at minimum, internship experience at top-tier institutions). Excellent financial modelling skills are necessary.

Key terms:

Start: Dec-2025 / early Jan-2026 (as soon as possible)

Duration 3-6 months (flexible)

Pay: $6,500 pcm

About Us

Isidor is building the foundation of reliable AI. We believe that the next leap in AI depends as much on understanding and measuring model behavior as it does on model size. To make AI trustworthy, we need systems that verify outputs, benchmark performance, and automate evaluation across billions of examples.

Isidor was founded by engineers and researchers who care deeply about precision, transparency, and scientific rigor. We are a small, fast-moving team working directly with frontier AI labs and enterprise to make evaluation as measurable and reproducible as training itself.

Website: www.isidor.ai

Founded in September 2025, Isidor raised an oversubscribed $3.6m pre-seed from leading funds including Gradient Ventures, futurepresent and Seedcamp, along with angels from Google DeepMind, Perplexity, KKR, Balyasny, Perella Weinberg and more.

Original posting on Isidor's site ↗

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