Job Summary: We are seeking a Mid-level Full Stack Developer (React + Python) to work on the development, evolution, and scalability of applications, with a focus on direct impact on the product and architecture. Key Highlights: 1. Space to decide, build, and evolve architecture 2. Focus on performance, maintainability, and code clarity 3. Lead technical initiatives and disseminate best practices **The Opportunity** We are looking for a **Full Stack Developer (React + Python) - Mid-level** to strengthen our team. You will have the space to **decide, build, evolve architecture, and directly impact the product**. Here, developers participate in decision-making. High-quality code is a priority. Quality is non-negotiable. **What You’ll Do** * Develop, evolve, and scale applications with emphasis on performance, maintainability, and code clarity; * Participate in architectural decisions and definition of technical standards; * Lead technical initiatives and disseminate best practices across the team; * Conduct code reviews, pair programming, and support the development of more junior developers; * Translate product and business requirements into sustainable technical solutions; * Ensure quality through testing, version control, documentation, and engineering best practices. **Tech Stack and Technical Requirements** **Back-end** Python with FastAPI (routes, Pydantic, service organization); SQL: CRUD, JOINs, relational modeling; SQLAlchemy (intermediate level). **Front-end** React + TypeScript; HTML, CSS, Flexbox, Grid; Tailwind CSS; Consuming REST APIs (Fetch/Axios); Front-end to back-end authentication flow. **Infrastructure and DevOps** Git (commits, branches, PRs); Docker (container execution, environment variables); Basic Linux. **Nice-to-Haves** Cloud platforms (AWS, GCP, or Azure); Messaging systems, containers, and event-driven architecture. **Expected Profile** Proactivity and ownership mindset; Clear and concise communication; Ability to collaborate within multidisciplinary teams; Solution-oriented rather than problem-focused; Openness to feedback and continuous improvement. **Employment Model** **Contractor (PJ) ***100% on-site work*** – Sapiens Parque, Florianópolis **Benefits** **INVICTUS** – performance-based variable compensation; ACATE Benefits; Referral Program; Internal workshops and continuous learning; Full transparency of results via monthly meetings.