**Education:** Bachelor's Degree — Completed **PwD (Persons with Disabilities):** No **Employment Type:** Individual Contractor (PJ) **Benefits:** Partnerships **Description:** Our client is seeking a professional for a challenging opportunity at a technology company (fintech). The primary mission will be to actively contribute to building a banking core system, proposing scalable and secure solutions to revolutionize the payments market. **MAIN RESPONSIBILITIES:** Develop and maintain PHP microservices (using Hyperf), focusing on performance and resilience. Implement secure integrations with strategic partners and systems within the payments ecosystem (Pix, DICT, SPI, JDPI, Celcoin, etc.). Work with technologies such as RDS (Postgres), Redis/Valkey, messaging, and asynchronous queues. Automate build and deployment pipelines on AWS (CodePipeline, ECS, ECR). Ensure platform observability through structured logging (CloudWatch, Grafana Loki), metrics, and tracing. Actively participate in architectural and security decisions (IAM, PrivateLink, VPC, Secrets Manager). Monitor production incidents and contribute to continuous platform improvement. **REQUIREMENTS:** Solid experience with PHP, preferably using the Hyperf framework. Practical experience with AWS services, specifically ECS, RDS, ElastiCache, CloudWatch, and CodePipeline. Knowledge of relational databases (Postgres) and SQL modeling. Strong understanding of security in financial systems (encryption, authentication, environment segregation). Practical knowledge of Docker and containerized environments in production. **ADDITIONAL QUALIFICATIONS (PREFERRED):** Prior experience with payment systems (Pix, TED, bank slips). Knowledge of Clean Architecture, DDD (Domain-Driven Design), and event-driven architecture. Familiarity with automated testing and TDD (Test-Driven Development). Basic understanding of monitoring and anti-fraud systems. **OTHER INFORMATION:** Individual Contractor (PJ) engagement. Hybrid work model based in Joinville/SC. Full-time, Monday through Friday. 2512020202181843116