TL;DR

Regular Java/Kotlin Developer (AI, E-commerce): Building and scaling intelligent solutions supporting language-driven features within a leading e-commerce advertising platform with an accent on high-quality code, reliable delivery, and architectural decisions. Focus on designing complex features, integrating LLM and agentic systems, and ensuring system scalability and observability.

Location: Remote with occasional visits to Warsaw

Salary: 700-1000 PLN/day on B2B (approx. 14000-20000 PLN/month)

Company

Our client is a market-leading Polish e-commerce platform with over 20 million users, focused on continuous growth and developing cutting-edge technologies, for which Jit Team provides specialized software development teams.

What you will do

  • Drive the design and implementation of complex features and system components.
  • Contribute to architectural decisions and evaluate technical trade-offs.
  • Ensure high quality, scalability, stability, and observability of delivered solutions.
  • Identify and manage technical risks, dependencies, and technical debt.
  • Collaborate closely with Engineers, Product Managers, and Designers.
  • Support knowledge sharing and promote engineering best practices, contributing to AI-driven initiatives.

Requirements

  • Min. 4 years of experience with Java (with Kotlin experience).
  • Basic experience and strong interest in AI-driven solutions, specifically LLM integration and Agentic Systems/Frameworks.
  • Ability to design and implement complex features and system components.
  • Strong ownership of delivered solutions (code quality, stability, scalability, observability).
  • Experience making architectural decisions and evaluating technical trade-offs.
  • Ability to identify and manage technical risks, dependencies, and technical debt.

Nice to have

  • Hands-on experience with Cloud environments (GCP preferred) and Kubernetes.
  • Experience working in large-scale, distributed systems.
  • Cross-team collaboration experience in complex organizational environments.
  • Experience providing technical consultancy and knowledge sharing.

Culture & Benefits

  • Opportunity to work on high-complexity, AI-driven solutions.
  • Influence on engineering standards and technical best practices.
  • Contribute to the development of a leading e-commerce advertising platform used by millions.
  • Work in a cross-functional environment with Engineers, Product Managers, and Designers.
  • Proprietary professional development programme.
  • Support for charitable and educational activities by Jit Team.