Desenvolvedor(a) Fullstack (Python & React)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Desenvolvedor(a) Fullstack (Python & React) based in Brazil.

This is an opportunity to take technical ownership of an evolving financial data platform with an existing functional <MVP.You> will work across backend, frontend, data engineering, infrastructure, and AI-powered capabilities.The role combines hands-on development with architectural decision-making and product-oriented <thinking.You> will help refactor critical areas, improve scalability and performance, and introduce new features that expand the platform’s value.Your work will include building data-rich interfaces, strengthening data collection pipelines, and integrating modern AI <capabilities.As> a key technical contributor, you will have significant autonomy to solve complex challenges and influence the product’s technical direction.This is a remote, full-time opportunity for a developer who enjoys ownership, experimentation, and building products from an established foundation.

Accountabilities

• Lead the technical evolution of the financial data platform, taking ownership of architecture, implementation, and continuous improvement.
• Maintain and expand the existing RESTful backend using Python and Django, optimizing APIs, application architecture, and database performance.
• Refactor critical components of the existing MVP to improve scalability, maintainability, reliability, and overall system performance.
• Develop and improve data collection and scraping processes for financial indicators and other relevant datasets, ensuring resilience against failures and access restrictions.
• Build and maintain sophisticated React interfaces, including interactive dashboards, charts, and data visualization components.
• Ensure seamless integration between frontend applications and backend services.
• Manage containerized environments using Docker and Docker Compose, supporting reliable development and deployment workflows.
• Improve deployment pipelines and infrastructure management across cloud environments.
• Integrate LLM APIs and AI capabilities for semantic analysis, data vectorization, and other intelligent product features.
• Collaborate with product stakeholders to translate user needs into scalable technical solutions.
• Make architectural decisions independently and proactively identify and resolve technical bottlenecks.
• Balance engineering quality, system stability, user experience, and product value when prioritizing technical work.

Requirements

• Strong professional experience as a Fullstack Developer, with the ability to work effectively across backend and frontend technologies.
• Advanced knowledge of Python 3.x and proven experience with Django or FastAPI.
• Strong experience with JavaScript or TypeScript and React, including Hooks, Context API, and state management.
• Advanced SQL knowledge and practical experience working with data-intensive applications.
• Experience with Pandas and data processing workflows.
• Hands-on experience with web scraping and data collection libraries such as Playwright, Selenium, Scrapy, or BeautifulSoup.
• Strong knowledge of Docker and Docker Compose for containerizing and orchestrating application services.
• Experience developing and consuming RESTful APIs.
• Ability to work with databases and optimize data access for performance and scalability.
• Experience building interactive data visualizations and dashboards is highly desirable.
• Knowledge of ETL, data normalization, and data engineering concepts is a strong advantage.
• Experience with AI/LLM APIs, semantic analysis, or vectorization is desirable.
• Experience in financial products, fintech, or financial data platforms is a plus.
• Strong autonomy and problem-solving skills, with the ability to make sound technical decisions independently.
• Product-oriented mindset, understanding that technology should ultimately create value and deliver a strong user experience.
• Comfortable working in a fast-paced environment where priorities can evolve and technical ownership is expected.
• Higher education in a relevant field, including a degree, technologist qualification, or postgraduate qualification.

Benefits

• Remote work arrangement.
• Full-time PJ contracting model.
• Progressive vacation benefits.
• Beneflex card with a monthly allowance of R$500.
• Discounts on FIAP programs.
• Opportunity to take significant technical ownership of an evolving product.
• Exposure to financial data, AI, data engineering, and modern fullstack technologies.