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Back-end Developer with AI -Java and Kotlin

Germ

Remote

B2B

5,000 - 6,200 Euro/month

Our Client is an innovative technology enterprise at the forefront of AI-driven software development and modern engineering solutions. The organization specializes in architecting high-performance applications and seamlessly integrating cutting-edge artificial intelligence models into complex business workflows. Joining this dynamic team, you will contribute to scalable software architecture and advanced Large Language Model (LLM) implementations that transform enterprise operations.

Resposibilities

  • Architect, develop, and maintain backend services using Kotlin, Java, and Spring Boot while ensuring efficient relational database interactions with PostgreSQL.

  • Design, fine-tune, and integrate AI models and Large Language Models into modern software architectures using Python, LangChain, and LangGraph.

  • Leverage OpenAI APIs and advanced prompt engineering techniques to build context-aware AI applications.

  • Analyze, prototype, and visualize data pipelines using Jupyter Notebooks, Pandas, and Matplotlib.

  • Develop intuitive user interface components using JavaScript and TypeScript to ensure seamless API integration.

  • Collaborate with cross-functional agile teams via GitLab and Jira, participating in code reviews, continuous integration, and architecture planning.

Requirments

  • Experience: 5+ years of professional software engineering experience, including proven involvement in at least 2 commercial projects incorporating LLM integration.

  • Core Backend & Data: Strong proficiency in Kotlin, Java, Spring Boot, PostgreSQL, JavaScript, and TypeScript.

  • AI & Python Stack: Demonstrated hands-on expertise in Python, Pandas, Jupyter Notebooks, Matplotlib, LangChain/LangGraph, OpenAI APIs, and Prompt Engineering.

  • Tools & Delivery: Solid experience working within agile workflows using GitLab and Jira.

  • Language Skills: Professional working proficiency in English.

Nice to Have

  • Frontend development experience with Vue.js.

  • Familiarity with cloud and containerised infrastructure, including Open Telekom Cloud, Kubernetes, and Kafka.

Our Client offers

  • Competitive compensation aligned with market standards and your level of experience.

  • Flexible working model with hybrid or fully remote options.

  • Direct access to state-of-the-art AI tools, infrastructure, and continuous learning opportunities.

  • Collaborative engineering culture focused on clean architecture, code quality, and professional growth.

Apply now!

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