About KLx KLx is the Portuguese subsidiary of Crédit Agricole S.A., a major international banking group delivering IT Skills & Software Development services to the group's global business lines.
Our mission is to support the IT transformation of a worldwide bank, leveraging the expertise of our international campus in Lisbon.
About Responsibilities At KLx, you will join our Generative AI perimeter, contributing to the backend infrastructure powering a suite of specialized AI assistants.
Working in a collaborative model, you will design, build, and evolve backend systems that ensure performance, scalability, and seamless integration with AI-driven capabilities.
We're looking for a Senior Backend Developer – Generative AI who will architect and implement backend services, integrate AI frameworks, and collaborate closely with cross-functional teams to deliver intelligent, high-quality digital experiences.
Key Responsibilities - Develop and maintain robust, scalable backend systems supporting multiple AI assistants.
- Implement secure, well-designed REST APIs, databases, and server-side logic ensuring smooth performance and reliable data handling.
- Collaborate with front-end teams to deliver cohesive, high-quality user experiences tailored to each assistant's purpose.
- Integrate AI-driven functionalities to enhance intelligence, automation, and responsiveness across helpdesk, HR, and back-office operations.
- Participate actively in agile processes: code reviews, sprint planning, architectural discussions, and continuous improvement initiatives.
About You!
- 5+ years of experience developing backend web applications using Python and frameworks such as FastAPI.
- Strong proficiency in building and maintaining REST APIs and ensuring robust data integration.
- A growth mindset, with willingness to expand backend expertise and explore emerging technologies in the AI ecosystem.
- Ability to clearly explain complex technical concepts to non-technical stakeholders.
- Experience working in an AI-focused team, ideally with frameworks like LangChain or LangGraph.
- Fluent in English.
Desirable - Familiarity with LLMs and cloud platforms, especially Azure, to support AI-driven solutions.
- Understanding of machine learning and AI concepts to contribute to innovative integrations.
What We Offer - Competitive Salary + Bonuses + Flex Benefits + Health Insurance - Hybrid working model (onsite + offsite) - Modern open-space office next to the Tagus River, 5 minutes from Metro/Train, 15 minutes from the airport - Canteen (Breakfast + Lunch) - Parking upon request (including EV charging) - Free coffee, hot chocolate, fruit - Training opportunities (Hard & Soft Skills) - International environment with 15+ nationalities - A people-oriented, friendly, and collaborative workplace