Top Tech Jobs & Startup Jobs in London

Build data pipelines, integrations, and infrastructure for AI research workflows. Work directly with frontier AI labs and enterprise teams to clean and prepare datasets, automate experiments, support model-in-the-loop and human-in-the-loop quality control, and translate ambiguous research needs into scalable production systems for model training, evaluation, safety, interpretability, and alignment.

Open application for exceptional candidates interested in building reliable AI systems. Isidor develops tools to verify model outputs, benchmark performance, and automate evaluation at scale. Applicants should describe what they have built and what they would like to build with the company. The role offers relocation support to London, a housing bonus near the office, competitive compensation, and equity.

Full-time, in-person finance internship in Isidor’s London office. The intern will support investment banking and private equity-related work, requiring prior internship experience at top-tier institutions and excellent financial modeling skills. The position lasts 3–6 months and starts immediately or in early January 2026.

Own the architecture and implementation of AI reliability infrastructure, including scalable data ingestion, evaluation and benchmarking systems, automated metrics pipelines, cloud automation, DevOps, and client-facing APIs. The role involves working directly with AI research labs and enterprise customers while shaping technical direction and engineering standards at an early-stage startup.