Mid-Level Full Stack Developer

Description

Job Summary: Develop and enhance web portals for digital channels, acting as a full-stack engineer on large-scale digital products and contributing to technical decisions. Key Highlights: 1. Work on large-scale digital products 2. Collaborative work with technology, product, and UX/UI teams 3. Contribution to technical decisions and continuous improvements **Date:** May 8, 2026 **Location:** São Paulo, São Paulo **Company:** B3 S.A. – Brasil, Bolsa, Balcão **About the Position** **Position:** Full Stack Developer **Location:** São Paulo/SP **Publication Date:** 08/05/26 ### **Your Day-to-Day Responsibilities** * Develop and enhance B3’s web portals for Digital Channels * Act as a full-stack engineer on large-scale digital products * Collaborate closely with technology, product, and UX/UI teams * Contribute to technical decisions and continuous improvements of solutions ### **Area Responsibilities** Evolve digital solutions with a focus on scalability, security, and high availability, ensuring technical quality, observability, and high application performance, promoting sound software engineering and architectural best practices, while guaranteeing an excellent experience for end users. ### **What We Expect From You** * Experience with HTML5, CSS3, JavaScript/TypeScript; * Experience with modern front-end frameworks (React, Angular or similar); * Experience with REST and/or GraphQL API development; * Experience with version control, CI/CD, and automated testing. ### **Nice-to-Have Qualifications** * Knowledge of web application security; * Experience with relational and/or non-relational databases; * Knowledge of observability, cloud platforms, and containerization; * Knowledge of solution architecture and design. **Benefits** * Profit Sharing Program (PLR) * **Bradesco Health Insurance** and Dental Plan * **Meal Allowance** (R$ 600/month) * **Food Voucher** (R$ 50 per business day) * **Transportation Voucher** and partial reimbursement for shuttle services * **Private Pension Plan** * **Maternity Leave** (up to 180 days) and extended paternity leave * **Childcare/Babysitter Assistance** * **Wellhub (Gympass)** and **TotalPass**, extended to dependents * **Discount Club** offering discounts at hundreds of companies * **Hybrid Work Model** and flexible dress code (“Dress as you are!”) * **Alura Online Learning Platform** * **Wellness Programs:** personal support, workplace gymnastics, birthday day off, free museum admission, quick massage, and more * **Funeral Assistance** for you and your pet **Recognitions** * **Top Employer Brazil** (2020–2025) * **Best Companies to Work For** (Financial Institutions, Information Technology, São Paulo, Women, Ethnic-Racial, LGBTI+) * Awards reinforcing our commitment to diversity, inclusion, and excellence **Join Us in Building the Future with B3!** We are far more than Brazil’s stock exchange. We are a global reference in financial market infrastructure, with over 100 years of history and direct impact on the country’s sustainable economic development. Here, you’ll find a plural, innovative, and collaborative environment where each person is the protagonist of their own journey. **Want to join a team that connects markets, accelerates careers, and transforms lives? Then this opportunity is for you!**