Job Description

Location: Lisbon,Lisbon,Portugal

Caixa Mágica is looking for a Technical Lead, focused on the development, maintenance, and evolution of application solutions, data, Machine Learning, and GenAI.

What will you do?

• Lead technical activities related to code development, maintenance, and optimization.
• Work with Python, PySpark, Databricks, and application technologies.
• Support the evolution of solutions in Microsoft Azure, including Azure Data Factory.
• Maintain and improve data and Machine Learning pipelines.
• Support the maintenance of regression and classification models in production.
• Develop and maintain GenAI solutions, including integrations with OpenAI APIs.
• Implement and maintain RAG solutions, single-agent and multi-agent architectures.
• Develop and maintain REST APIs.
• Ensure best practices in development, testing, documentation, and code quality.
• Support deployments, environment management, and troubleshooting.

What are we looking for?

• Up to 5 years of experience in similar roles.
• Bachelor’s degree in Computer Engineering, Software Engineering, or a similar field.
• Experience with Python, PySpark, and Databricks.
• Solid experience with Microsoft Azure and Azure Data Factory.
• Knowledge of Machine Learning, GenAI, and LLM-based architectures.
• Experience with LangChain, LangGraph, RAG and, preferably, Langfuse.
• Knowledge of SQL/PostgreSQL, vector databases, and document indexing.
• Experience with REST APIs, GitHub, pytest, SonarQube, and DevOps practices.
• Good communication skills, critical thinking, and problem-solving ability.
• English required; Portuguese and Spanish are valued.
• Knowledge of Agile, JIRA, and Confluence is valued.

What can you expect from us?

• A permanent job contract for a long term project;
• Tech equipment + SIM Card + personal smartphone;
• Health and Life Insurance;
• Social events and team buildings;
• The commitment of letting you grow with us, and be rewarded accordingly;
• A dynamic and young team that will be always there to support you;
• Training in the latest technologies;
• Coffee, fruits, snacks and a warm welcoming when you pass by the office.

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