Cassio – Python, AI agent development, AWS
Cassio is a seasoned AI engineer with 9 years of experience specializing in Python, event-driven systems, and AI agent orchestration. He has led end-to-end delivery of LLM-powered applications in regulated FinTech and healthcare domains, demonstrating strong ownership and client-facing communication. His expertise includes LangChain, Kafka, FastAPI, AWS, and multi-provider LLM integration. Cassio is recognized for his mature leadership, product-oriented mindset, and effective technical decision-making.
9 years of commercial experience in
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Let’s get started today!Experience Highlights
Forward-Deployed Engineer
It's an AI automation platform for healthcare operations.

- Designed and shipped AI-powered workflow automations for healthcare operations.
- Built back-end services and integrations connecting LLM agents, APIs, and customer workflows.
- Collaborated with clients, product, and engineering to define requirements and deliver production solutions.
- Improved operational efficiency by automating repetitive manual healthcare processes.
Senior Software Engineer
It's an event-driven exception management platform for alternative investment operations. The system replaces slow manual triage workflows with Kafka-based event processing, dynamic rule queues, and analyst-facing prioritization tools.
- Built FastAPI services and Kafka pipelines for scalable exception processing.
- Designed dynamic rule-based queues to prioritize and route operational exceptions.
- Integrated AWS Lambda consumers with PostgreSQL persistence.
- Added Datadog observability and Terraform infrastructure automation.
- Reduced average exception handling time from 15 minutes to 90 seconds.
Senior Software Engineer
It's a Databricks ETL optimization for enterprise data pipelines (a multinational fast-food holding company).
- Optimized Databricks ETL jobs, reducing runtime by more than 70%.
- Rebuilt and tested AWS Glue jobs to improve reliability.
- Improved Spark-based data workflows for scalability and maintainability.
- Supported Python and scikit-learn data processing workflows.
Tech Lead / Back-end Engineer
It's a personalized learning platform serving language learners across multiple modalities.
- Led a small engineering team delivering personalized learning features.
- Built back-end APIs and workflows using FastAPI and PostgreSQL.
- Collaborated with product stakeholders to translate learning goals into technical solutions.
- Improved AWS infrastructure and CI/CD processes, reducing operational costs.
Senior Software Engineer
It's a research infrastructure data platform used by universities and research institutions.
- Migrated legacy Pentaho ETL workflows to Apache Airflow.
- Built and maintained data pipelines for academic and research infrastructure.
- Improved search and indexing workflows using Elasticsearch.
- Added monitoring and observability with Grafana and MongoDB-backed systems.