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Toloka Tech Stack

Human-powered data platform for AI model training, evaluation, and red-teaming

IT Services and IT Consulting Amsterdam 51–200 employees Founded 2014 Public Company

Toloka operates a crowdsourced data labeling and annotation platform serving AI labs and enterprises. The stack is lean (Python, Java, JavaScript, RAG) and the hiring shape reveals a company in transition: marketing and engineering lead the active roles, with notable gaps in dedicated sales infrastructure despite taking on product director and sales director roles. Active projects around LLM products, SFT data generation, and evaluation pipelines indicate a shift from pure annotation toward higher-value AI training workflows, though pain points around validating core value proposition and scaling complex projects suggest product-market clarity remains a work in progress.

Tech Stack 14 technologies

Core StackJira Expensify Slack Python Java JavaScript RAG Google Workspace Notion Excel LinkedIn Instagram TikTok

What Toloka Is Building

Challenges

  • Validating core value proposition
  • Meeting gross margin targets
  • Building sourcing functions from the ground up
  • Compliance with serbian labour law
  • Scaling product
  • Building flexible on-demand tech teams
  • Ensuring project delivery quality
  • Scaling complex ai data projects
  • Demonstrating core value
  • Optimizing delivery efficiency

Active Projects

  • Building sourcing functions from the ground up
  • Tendem ai
  • Overall marketing strategy across mindrift, tendem and toloka platform
  • Llm-powered products
  • Analytics
  • Sft data generation pipeline
  • Evaluation pipeline
  • Red-teaming project
  • Coherent strategy across products with different go-to-market motions
  • Product strategy and roadmap development

Hiring Activity

Accelerating35 roles · 20 in 30d

Department

Marketing
7
Engineering
6
HR
4
Data
3
Finance
3
Product
3
Ops
2
Sales
2

Seniority

Senior
10
Mid
9
Director
6
Manager
5
Lead
2
Junior
1

Notable leadership hires: Product Director, Director of Sales, Sales Director, Technical Lead, Program Director

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About Toloka

Toloka provides human-powered data solutions for AI development, operating a platform that connects over 200,000 global contributors for dataset creation, annotation, model evaluation, and red-teaming across 50+ domains and 40+ languages. The company serves AI labs, startups, and enterprises building foundation models and AI agents. Founded in 2014 and headquartered in Amsterdam, Toloka is a public company with 51–200 employees. The platform combines human intelligence with automation to address annotation, data collection, computer vision, and autonomous driving use cases. Current hiring spans 9 countries (Portugal, Bulgaria, Serbia, Netherlands, Indonesia, Belgium, United States, Greece, Hungary, Spain) with accelerating velocity across product, engineering, and marketing functions.

HeadquartersAmsterdam
Company Size51–200 employees
Founded2014
Hiring MarketsPortugal, Bulgaria, Serbia, Netherlands, Indonesia, Belgium, United States, Greece

Frequently Asked Questions

What does Toloka do?

Toloka is a crowdsourced data platform for AI training and evaluation. It connects 200,000+ contributors to generate annotations, create datasets, evaluate models, and perform red-teaming across 50+ domains and 40+ languages for AI labs and enterprises.

What tech stack does Toloka use?

Toloka's core stack includes Python, Java, and JavaScript. The platform also uses RAG (Retrieval-Augmented Generation), alongside productivity tools like Jira, Notion, Slack, and Google Workspace.

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