Software Developer (AI)

CDQ AG & CDQ GmbH; Wrocław; On-site; PLN 167,400 - 223,200; Full time

Job summary

CDQ AG & CDQ GmbH in Wrocław is looking for an experienced Java Developer passionate about creating high-quality, maintainable code. The role involves designing AI agents, integrating AI capabilities, and contributing to scalable architectures.

The ideal candidate has at least 3 years of backend development experience with Java, along with proficiency in Polish (C1) and English (C1/B2+). Familiarity with LLMs, vector databases, and modern development practices is highly valued.

Flexible benefits to be determined.

Qualifications

• At least 3 years of professional experience in backend development using modern Java technologies.
• Fluent in Polish (C1) and English (C1/B2+).
• Experience integrating LLMs into applications.

Responsibilities

• Design AI agents with reasoning pipelines.
• Integrate AI capabilities such as LLM-powered services.
• Contribute to scalable architectures for data-driven systems.
• Maintain and improve existing code bases.
• Collaborate with Team Lead and Product Owner on tasks.
• Participate in code reviews and knowledge sharing.

Skills

Java

Spring Boot

Docker

Spring AI

LLM integration

Vector databases

AWS Bedrock

LangChain4j

Prompt engineering

Tools

Redis

Mongo DB

Job description

Why us?

We are looking for an experienced Java Developer with strong technical skills and a passion for creating high-quality, clean, and maintainable code. The ideal candidate has at least 3 years of professional experience and a solid background in backend development using modern Java technologies. The perfect fit is a team-oriented person who values collaboration, knowledge sharing, and collective problem-solving. A genuine interest in data and databases is highly appreciated.

Your daily tasks on the job

• Designing and implementing AI agents with reasoning pipelines (e.g., multi-step workflows, RAG-based decision making)
• Integrating AI capabilities such as LLM-powered services, semantic search, and intelligent automation
• Contributing to scalable architectures for data- and event-driven systems
• Improving, refactoring, and maintaining existing code bases
• Designing tasks in collaboration with the Team Lead and Product Owner
• Participating in code reviews, architecture discussions, and knowledge sharing sessions

Your qualifications

Java, Spring Boot, Docker, AI-related technologies.

• Spring AI
• Experience integrating LLMs into applications (OpenAI API, Anthropic, local inference, etc.)
• Understanding of vector databases (Milvus, Pinecone, Qdrant, Elasticsearch vector search, or similar)
• AWS Bedrock
• LangChain4j
• Knowledge of embeddings, prompt engineering basics, and retrieval-augmented generation (RAG)
• Understanding Model Context Protocol

• Polish – C1 (required) / English – C1/B2+ (required)

Additional technical skills (Nice to have)

• Redis, Mongo DB
• Experience with AI/ML frameworks or orchestration libraries (LangChain4j, Spring AI, Embabel, Haystack, etc.)
• Familiarity with LLM model lifecycle: prompt design, evaluation, latency considerations, cost/performance trade‑offs
• Experience with Ollama / vLLM
• Experience with streaming architectures for AI pipelines (e.g., Kafka Streams)
• Experience with document processing, OCR, or semantic search

Benefits

To be determined.