Job Summary: We are seeking a Data Engineer with Python, AWS, and data modeling expertise to build scalable and intelligent solutions for a financial project. Key Highlights: 1. AWS data ingestion application development and evolution 2. Automated test construction for quality assurance 3. Application of software development best practices We are specialists in **technological transformation**, combining human expertise with AI to create scalable tech solutions. With over 8,000 CI&Ters worldwide, we have formed partnerships with more than 1,000 clients throughout our 30-year history. Artificial Intelligence is our reality. **Important**: If you reside in the Campinas Metropolitan Region, your physical presence at our city offices is mandatory, per our current attendance policy. Hello, this is Wal from CI&T! I am part of the Talent Attraction team and am looking for professionals located in Brazil for the position of **Senior Data Developer (Python, AWS)**, who will work on a financial industry project. We are looking for a Data Engineer to join our team and contribute to building scalable and intelligent solutions for large volumes of data. If you are passionate about data, have solid experience with Python, AWS, and data modeling, enjoy solving complex problems, and collaborating with multidisciplinary teams, this role is for you! **Responsibilities:** * Understand technical requirements, refine tasks, and estimate delivery timelines. * Develop and evolve AWS data ingestion applications. * Build automated tests to ensure deliverable quality. * Apply software development best practices: design, naming conventions, test coverage, requirement fulfillment, and optimization. * Handle incident management. * Participate in agile ceremonies such as daily stand-ups, planning, demos, and retrospectives. **Required Skills:** * Experience and best practices with code versioning (Git, GitHub) * SQL experience for query construction, manipulation, and optimization * Python experience for ETL/ELT using libraries such as NumPy and Pandas * PySpark experience for ETL/ELT * Desirable knowledge of Partitioning, Lazy Evaluation, Caching, and UDFs using PySpark * CI/CD tool experience * Experience with relational and non-relational databases * Knowledge of dimensional data modeling * Knowledge of data governance and data quality * Knowledge and best practices for unit testing using Unittest and Pytest frameworks in Python * Knowledge of Infrastructure as Code (IaC) using Terraform * AWS experience and familiarity with the following services: Required: * Access management: IAM * Storage: S3 * Compute and processing: Glue Desirable: * Storage: RDS and DynamoDB * Data governance: Lake Formation * Compute and processing: Lambda and EC2 * Orchestration and scheduling: Step Functions and EventBridge * Query and analysis: AWS Athena #LI-WC2 **Our Benefits:** * Health and dental insurance * Meal and food allowance * Childcare allowance * Extended parental leave * Gym and health & wellness professional partnerships via Wellhub (Gympass) TotalPass * Profit and Results Sharing Program (PLR) * Life insurance * Continuous learning platform (CI&T University) * Discount club * Free online platform dedicated to promoting physical health, mental well-being, and overall wellness * Pregnancy and responsible parenting course * Partnerships with online learning platforms * Language learning platform * And many more More details about our benefits here: https://ciandt.com/br/pt-br/carreiras At CI&T, inclusion begins at first contact. If you are a person with disability, it is important to **submit your medical report during the selection process.** *Click here to check which information must be included in the report.* This allows us to guarantee the support and accommodations you deserve. **If you do not yet have an official medical report, don’t worry—we can support you in obtaining one.** We have a dedicated Health & Wellness team, inclusion specialists, and affinity groups ready to support you at every stage. Count on us to walk alongside you on this journey.