Senior Software Engineer

Company Intro

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 global crowds, representing
over 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
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
,
Israel
,
Czech Republic
,
Serbia
, and more. We are headquartered in
Amsterdam
.

About the Role

We believe the future of work lies in effective AI–human collaboration, not in purely autonomous systems operating on their own. That's why we're building
Tendem
– the system where AI and human experts work side-by-side, solve tasks together, and leverage each other's strengths. From general-purpose tasks to highly specialized professional domains, our platform unites people and models, backed by state-of-the-art technology and a growing marketplace of expert talent.

As a
Senior Software Engineer,
you will develop core product functionality, improve AI agent capabilities, work closely with the ML team, and help bring new AI features to production.

What You'll Work On

• Extend the agent's capabilities and add new product features to improve user experience – from clarifying task requirements to working with final results.
• Improve collaboration between the agent and human experts, evolving hybrid workflows and balancing quality and speed.
• Contribute to our agent infrastructure: tools, environments, internal knowledge, and third-party integrations.
• Design and implement observability metrics for agent quality and overall system reliability.
• Develop and maintain production services in
  Python
  .

Qualifications

• 4+ years
  of experience as a
  software engineer
  .
• Strong
  product development experience
  : building features and business logic in production systems.
• Interest in and readiness to work closely with AI models and agents.

Preferred but not required

• Experience using and integrating AI models and agents: integration, prompting, tooling, automated workflows, etc.
• Full-stack background:
• Backend: comfortable extending backends written in Java (Spring) when you need to adjust agent-backend protocol or aggregate agent results long term.
• Frontend: comfortable building UIs to display structured agent outputs. Our frontend is written in TypeScript (React).
• Technical leadership experience: coordinating cross-functional development and delivering complex product features end-to-end.

What we can offer

• You'll have the opportunity to work on highly innovative projects at the leading edge of AI development, and work with a genuinely dedicated and dynamic team of experts.
• You'll also be working on projects with customers that are AI industry leaders and household names.
• Personal and career development: we support employee's ambition for professional development and encourage them to implement their ideas in their projects.
• Flexibility: we offer remote or hybrid employment. You will also design with your manager a workday that works best for you.
• Paid parental leave and sick leave.
• Medical insurance fully covered for the employee + 80% of coverage for family members;
• Meal allowance, transportation expenses reimbursement.
• 25 vacation days per year.