• Work with deep technical and analytical understanding of what has already been implemented in the project, ensuring continuous evolution of the solutions; • Serve as the technical reference within the team, exerting leadership influence and supporting more junior developers; • Contribute directly to innovation and knowledge acquisition in the Android ecosystem and other related technologies; • Develop and maintain high-performance REST APIs; • Design and implement resilient, scalable and fault-tolerant services; • Work on optimizing latency, throughput and performance of high-volume systems; • Implement advanced caching strategies, including distributed Redis; • Apply rate limiting, circuit breaker and backpressure mechanisms; • Perform profiling and tuning of applications for maximum efficiency; • Work on database modeling focused on performance and scalability; • Work with relational and non-relational databases according to project needs; • Operate with microservices architecture in production, ensuring consistency and availability; • Implement observability practices, monitoring and distributed tracing; • Work with Docker, Kubernetes and cloud environments (AWS, GCP or Azure).

• Act as the team's technical reference, providing support and direction to more junior developers; • Conduct in-depth technical analysis of what has already been implemented in the project; • Exert leadership influence within the team, guiding best practices and technical decisions; • Contribute to continuous innovation and knowledge growth within the Android ecosystem; • Work with strong experience in Vanilla JavaScript, ensuring full mastery of the language in its pure form; • Apply advanced knowledge of the event loop, garbage collection, and memory leaks; • Perform DOM manipulation in constrained environments; • Take into account real hardware limitations such as limited CPU and memory, as well as older browsers; • Drive performance optimization for low-end environments; • Work with microservices architecture and distributed systems; • Work with REST APIs and both synchronous and asynchronous communication; • Use message brokers such as Kafka, RabbitMQ, or similar; • Apply concepts of idempotency, retry strategies with backoff, and circuit breakers; • Ensure observability through logs, metrics, and tracing.

• Atuar no desenvolvimento e evolução de serviços backend em ambiente cloud, suportando arquitetura moderna; • Conduzir a migração e modernização de um recorte do Sistema (Sigla) J5, originalmente desenvolvido em COBOL, para uma aplicação moderna em Python na AWS Cloud; • Desenvolver APIs e serviços backend; • Apoiar integrações com sistemas internos e externos; • Garantir qualidade de código e testes; • Trabalhar em conjunto com times de frontend e arquitetura.

• Collaborate with multidisciplinary teams to deliver iteratively: work side-by-side with backend, frontend and cloud engineers to ensure solutions are implemented efficiently and aligned with needs; • Ensure platform performance and stability: design and implement secure APIs and integrations, and perform monitoring and automated testing to keep platform data and processes consistent, fast and available in all conditions; • Implement automated tests to ensure code reliability and quality; • Monitor and optimize application performance in production; • Actively participate in technical decisions and the evolution of system architecture; • Contribute to improving the infrastructure, architecture and performance of existing systems and microservices; • Help improve the development experience for the teams; • Foster a technical culture of excellence: be obsessed with quality and agile development; • Reflect on and validate ideas and help delight our customers; • Be responsible for continuous day-to-day development and ensure the quality we aim for.