Job Summary: Back-end development professional to join the technology team, focusing on continuous improvement and innovation of software in healthcare and finance. Key Highlights: 1. Integrate the back-end development team with expertise. 2. Develop software that translates business requirements. 3. Actively participate in technical discussions. We are Grupo Fácil. For over 30 years, we have been a national reference in technology and solutions for the healthcare and financial sectors. Dedicated to delivering value to our customers, focused on continuous improvement and natural evolution within the Brazilian software market. Currently, we are embarking on a new major innovation journey, where new processes and products will be developed to deliver greater value to our customers; therefore, we hope you will join us on this journey. **Responsibilities and Duties** You will be responsible for: * Joining the team with expertise in back-end development; * Developing isolated components and unit tests; * Translating business requirements into software; * Maintaining software quality by reviewing processes, tools, and best practices available for the product and technologies used; * Actively participating in technical discussions. **Job Requirements** For this position, it is important that you have: * Availability for hybrid work in Belo Horizonte; * Experience developing large-scale projects (scale, performance, quality, etc.); * Experience with TypeScript and JavaScript programming languages; * Solid experience with Node.js and NestJS; * Experience with Clean Code, SOLID, DRY, and KISS principles; * Experience handling large data volumes using streams, chunks, generators, promises, and other performance patterns in the Node.js ecosystem; * Experience with caching, TypeORM, and relational databases (PostgreSQL); * Experience with TDD, unit testing, integration testing, and code coverage using Jest or Vitest; * Familiarity with Load Balancers, scalability, auto-scaling, and high availability; * Familiarity with production definition and requirements; * Familiarity with Code Review, Pull Requests, and GitHub Flow; * Knowledge of API building using Docker, AWS ECR, DockerHub, and similar tools; * Knowledge of queues, stacks, and topics (AWS SQS, SNS, Pub/Sub). **Desirable Requirements** It would be beneficial if you also have: * Knowledge of logging tools (Pino or Winston), OpenTelemetry, APN, CloudWatch; * Knowledge of pipelines and process automation using GitHub Actions; * Knowledge of TDD, DDD, BDD, and Refactoring; * Knowledge of Clean Architecture and/or Hexagonal Architecture; * Knowledge of stress-testing, load-testing, profiling, and SRE; * Knowledge of ETL; * Knowledge of MemCache, Redis, and non-relational databases (DynamoDB or MongoDB). All our job openings are open to people with disabilities (PcD). If you possess the above experiences and competencies, we are looking for a professional like you! However, if you do not identify with this role, please share it and make a difference! **\#JoinGrupoFácil**