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