Back End Developer

Senior Python Back-End Engineer – Conversational AI & Generative AI (AWS / LLM / RAG)

Role Context

We are currently hiring for our client in the banking industry, a leading European financial institution with a strong focus on digital transformation and AI innovation. The organization is investing heavily in Generative AI, conversational platforms, and cloud-native solutions to enhance internal services across HR, Facilities, Marketing & Communications, and other business domains.

Role Summary

We are looking for a Senior Python Back-End Engineer with strong experience in AWS, AI-driven applications, and backend development.

You will design and build scalable backend services for conversational AI solutions, leveraging Generative AI, LLMs, and RAG architectures in a secure AWS environment. The role combines backend engineering, cloud integration, and AI solution development, in close collaboration with business stakeholders, architects, and data science teams.

Key Responsibilities

• Translate business requirements into technical AI and backend solutions
• Design and develop Python-based backend services and REST APIs
• Build and deploy RAG-based and Generative AI applications using AWS Bedrock and LLMs
• Work with AWS services (S3, analytics, integration tools, etc.)
• Implement and maintain CI/CD pipelines and DevOps practices
• Perform testing, code reviews, debugging, and production support
• Ensure system integration across multiple applications and platforms
• Collaborate with data scientists, architects, and cloud teams
• Contribute to chatbot and conversational AI development

Required Skills

• 5+ years of experience in Python backend development
• Strong knowledge of AWS (especially Bedrock, S3, and related services)
• Experience with LLMs (e.g., Claude or similar models)
• Understanding of RAG architectures and GenAI applications
• Experience with REST APIs and system integration
• CI/CD and DevOps experience
• Strong analytical and problem-solving skills
• Ability to translate business needs into technical solutions
• Fluent in English (Dutch is a plus)

Nice to Have

• Experience with Agile / SAFe environments
• Knowledge of testing and QA practices
• Exposure to enterprise integration environments

Soft Skills

• Strong communication and stakeholder management
• Analytical and structured thinking
• Team player, collaborative mindset
• Quality- and security-oriented
• Proactive and results-driven
• Eager to learn new technologies

Team Environment

You will join a cross-functional integration team delivering AI and cloud solutions in an international Agile setup (Belgium, Czech Republic, Bulgaria), focused on innovation, knowledge sharing, and continuous improvement.