Job Summary: We are looking for a senior backend developer to work on building and evolving high-scale digital products, with active involvement in technical decisions and system architecture. Key Highlights: 1. Senior-level backend development 2. Active participation in technical decisions and system architecture 3. Development and evolution of high-scale digital products We seek a professional with senior-level backend development experience to build and evolve high-scale digital products. The candidate will actively participate in technical decisions, system architecture, performance, and reliability, directly contributing to product evolution. Requirements: Solid experience as a Senior Backend Software Engineer Consistent track record in digital product development Proficiency in at least one backend language (Node.js, Java, Python, Go, or similar) Experience with scalable architectures, APIs, and microservices Hands-on experience with Cloud platforms (AWS, Azure, or GCP) Experience with relational and non-relational databases Knowledge of automated testing and CI/CD Fluent English Job Type: Freelance / PJ, Intermittent (freelance) Compensation: R$4\.924,49 \- R$17\.204,56 per month Work Location: Remote