Senior Kotlin Engineer; Agentic AI

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Senior Kotlin Engineer (Agentic AI) (#4759)

Referral Bonus: $1000

Location: Europe

Work type: Office/Remote

Technical Level: Senior

Job Category: Software Development

Project: Senior Kotlin Developer (Agentic AI)

We are looking for talented Senior
Software Engineer to join our AI project in Europe. The ideal person will have hands‑on experience with multiple backend frameworks, databases, and tools, enabling them to adapt to different project requirements and contribute to the development of robust applications.

We use Kotlin, Spring Boot and reactive programming to build a core AI agent framework/platform enabling internal teams to easily develop, deploy, and scale their own AI agents within a shared infrastructure.

Our California‑based customer is an American global e‑commerce leader, one of the most popular and successful websites on the Internet. It provides platform services by connecting millions of sellers and buyers in more than 190 markets around the world.

• Design and develop a robust and extensible Kotlin framework and platform for configuring and managing AI agents
• Write clean, maintainable, and efficient code that complies with our coding standards
• Ensure the performance, quality, and responsiveness of the framework/platform
• Identify and correct bottlenecks and errors
• Help to maintain code quality, organization, and automatization.
• Create and maintain technical documentation for the framework/platform

• At least 5 years of proficiency in Kotlin
• Deep experience with the Spring Framework
• Experience setting up Virtual Machines
• Knowledge of different communication protocols such as REST, Graph
  
  QL, gRPC
• Experience with distributed systems
• Experience with YAML-based configuration (applications, infrastructure, CI/CD)
• Familiarity with tracing, metrics and monitoring best practices
• Experience of creating frameworks and platform for other developers
• Proficiency in Maven or similar tools
• Familiarity with No
  
  SQL databases
• Very good spoken and written knowledge of English language (C1)

• Python experience is nice to have
• Familiarity with GenAI, AI agents, machine learning, and natural language processing concepts is a plus
• Experience with MCP, A2A, RAG is a big plus
• Experience with event‑driven architecture
• Experience with Docker and Kubernetes
• BSc or MSc in Computer Science, Engineering or relevant field

• Challenging projects and mature teams
• Personalized on‑demand cross‑company mentoring support enabling you to learn new things faster
• Plenty of opportunities to share knowledge and get more experience such as opportunity to mentor others, speak at events, and contribute to pre‑sales
• Direct communication with the customer
• A friendly, supportive and dynamic work environment
• Care, comfort and fun
• A relocation package
• Corporate events, outstanding parties and team buildings

• Flexible working format - remote, office‑based or flexible
• A competitive salary and good compensation package
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing