Senior Software Engineer - Location: Brazil (Mandatory location, 100% Remote) Contract: 6 months (Freelance) Start Date: ASAP Key Responsibilities: Develop scalable backend components in Kotlin with a strong focus on performance and maintainability. Design and integrate APIs , including OpenAPI and webhooks. Collaborate closely with cross-functional teams across Product, UI, and Engineering. Conduct code reviews and contribute to technical best practices and guidelines. Troubleshoot, test, and …