About Toloka
At Toloka AI we create data that powers leading GenAI models and innovations. We work with frontier labs, big tech, renowned AI startups, enterprises and non‑profit research organizations worldwide. We use a combination of Experts + Crowd + Tech Platform to teach AI models to reason and evaluate their efficacy and safety. We have experts in more than 50 different domains—from doctors and lawyers to physicists and engineers—and boast one of the most diverse general crowds,representing ove r 100 countries and speaking 40+ languages. We are a well‑funded startup with an enviable portfolio of clients including Anthropic, Amazon, Microsoft, Poolside, Recraft, and Shopify.
Recently, we secured strategic investment led by Bezos Expeditions and Nebius Group with participation from Mikhail Parakhin, CTO of Shopify and board advisor to leading GenAI companies, who now serves as our Chairman of the Board. Our remote‑first team is globally distributed around the world: USA, UK, the Netherlands, Serbia, and more.
About the Team
We are the ML team inside Toloka — we build the machine‑learning products that power the platform itself, so every project running on Toloka is faster, cheaper, and more reliable.
A few examples of what we own:
- LLM QA — the core technology behind Toloka's automated quality‑check mechanism. Every annotation flowing through Self‑Service is reviewed by an LLM agent we design, train, and operate.
- Model distillation and fine‑tuning — adapting frontier and open‑source models to Toloka's tasks to hit the right quality at the right cost.
- Evaluation, benchmarking, cost modeling, and model selection across providers.
We own the full chain. The same team designs the ML solution, ships it to production, keeps it running 24/7, analyzes the results coming back from real projects, and feeds that signal into the next iteration. No hand‑off between research, engineering, and operations — it's all us.
About the Position
You will own Toloka’s end-t
📌 Senior ML Researcher (España)
🏢 Toloka
📍 España