Senior Software Engineer

Job Title: Senior Software Engineer

Location: Warsaw, Poland (3/4 days WFO Per Week)

Duration: 1-year contract + Extension

Role Overview

We are looking for a Senior Java Backend Engineer to join a Warsaw-based engineering team working on highly scalable, data-intensive applications with a growing focus on Generative AI and Agentic AI solutions.

The role is primarily focused on hands-on Java backend development, with Spring Boot and Microservices at its core. Alongside this, you will have the opportunity to work with large-scale data technologies and contribute to production-grade GenAI/LLM and agentic applications.

Essential Skills & Experience

• Strong hands-on experience with Java development.
• Strong experience with Spring Boot and Microservices.
• Proven experience writing and delivering production-quality code.
• Experience working independently and taking ownership of technical decisions.
• Experience with large-scale data processing, distributed systems or data engineering.
• Hands-on experience with one or more of:
• Apache Spark
• Databricks
• Snowflake
• Experience building production GenAI / LLM-based applications or Agentic AI solutions.
• Experience with an LLM/AI framework such as LangChain, LangGraph or an equivalent framework.
• Strong communication skills and the ability to work directly with users/stakeholders.

Nice to Have

• Experience with RAG, AI Agents or agentic workflows.
• Python experience, particularly in the context of GenAI/LLM solutions.
• AWS or other cloud experience.
• Kubernetes / cloud-native application experience.
• Experience working with high-volume, data-intensive applications.