Job Summary: Analyze, develop, and evolve systems—including creating automated tests—while participating in defining technical and functional architectures. Key Highlights: 1. Analyze, develop, and evolve systems 2. Participate in defining and detailing technical architectures 3. Collaborate with the development team on implementation and stabilization IT Engineer Spec IV (Python) Country: Brazil **\#WHO WE ARE** F1RST is the future—and your career starts here! Our culture is built on “People, Innovation, and Results”. We are part of Brazil’s largest international bank and one of the world’s largest banks, delivering services and experiences to over 60 million customers across the entire Santander ecosystem. Join the team whose purpose is to support people and help businesses thrive. We are passionate about technology. We are F1RST Digital Services. Follow us on LinkedIn to stay updated on all the latest news: https://www.linkedin.com/company/f1rstdigitalservices We have an opening for you to become an **IT Engineer Spec IV (Python):** **Your role here will be:** * Analyze, develop, and evolve systems—including creating automated tests; * Participate in defining and detailing technical architectures together with solution architects, ensuring corporate standards and best practices; * Participate in defining and detailing functional architecture with product leadership; * Collaborate with the development team on implementation and stabilization, performing adjustments and hotfixes whenever necessary; * Lead post\-mortems, proposing preventive improvements to ensure application stability and performance; * Create periodic health checks for infrastructure and applications, promoting proactive, reliability\-oriented operations; * Develop automation and self\-healing routines, applying SRE and FinOps principles to optimize cost, performance, and availability; * Implement integrated logs, metrics, and traces using OpenTelemetry, strengthening end\-to\-end observability and monitoring; * Conduct predictive performance analysis, stress testing, and Chaos Engineering to validate solution resilience. **Mandatory Requirements:** * Python, Celery, relational and non\-relational databases; * Experience developing microservices; * Experience with API Gateways—Apigee, AWS API Gateway; * SQL databases (PostgreSQL, Oracle, MySQL) and NoSQL databases (MongoDB, DynamoDB, Redis); * Knowledge of Design Patterns and architectural patterns (Hexagonal, Clean Architecture, Event\-Driven); * Experience with DevOps, CI/CD, and version control using Git / GitFlow; * Experience with containerization and orchestration: Docker, Kubernetes, OpenShift, Helm; * Pipeline automation using Jenkins, GitLab CI, or AWS CodePipeline; * Code analysis and code quality tools (SonarQube, Sonatype); * Monitoring and observability: Dynatrace, Grafana, Kibana, Prometheus, CloudWatch; * Practical experience with OpenTelemetry, distributed logging, metrics, and tracing; * Messaging and streaming: Kafka, RabbitMQ, ActiveMQ; * Automated testing (JUnit, Cucumber); * Application security: OAuth2, JWT, TLS, Secrets Management; * Experience with cloud providers: AWS and Azure (EC2, ECS, S3, RDS, IAM, AKS, etc.); * Experience with FinOps and cloud cost optimization practices; * Experience troubleshooting performance issues, analyzing heap/thread dumps, and profiling Java applications; Experience with SRE, system resilience, self\-healing, and chaos engineering. * **Desirable Requirements:** Knowledge of LLMs and RAG * **Work Location:** Radar \- Rua Amador Bueno, 474 – Santo Amaro, São Paulo – SP **\# BENEFITS:** ➡️ Meal allowance; ➡️ Health insurance; ➡️ Dental insurance: Basic and intermediate plans; ➡️ Transportation allowance; ➡️ Flexible Vacation: 24 business days of vacation, divisible into up to 6 periods; after every 2 months worked, you can already enjoy 4 business days; ➡️ Birthday Day Off; ➡️ Gym partnerships: Wellhub, Totalpass; ➡️ Flexible Working: Hybrid work model—2 days remote and 3 days onsite; ➡️ Training platforms with over 100,000 courses; ➡️ Career paths for professional development; ➡️ Flexible Learning: Exclusive study incentive program for High\-Performance employees; ➡️ Childcare allowance; ➡️ Nascer Program and Extended Paternity Leave. ➡️ Life insurance; ➡️ Nascer Program; ➡️ Be Healthy \- Program encouraging healthy habits; ➡️ PAPE \- Specialized Personal Support Program; **\#LI\-Hybrid