Senior Security Engineer - Endpoint

About Nubank Nubank was founded in 2013 to free people from a bureaucratic, slow and inefficient financial system. Since then, through innovative technology and outstanding customer service, the company has been redefining people's relationships with money across Latin America. With operations in Brazil, Mexico, and Colombia, Nubank is today one of the largest digital banking platforms and technology-leading companies in the world. Today, Nubank is a global company, with offices in São Paulo (Brazil), Mexico City (Mexico), Bogotá (Colombia), Durham (United States), and Berlin (Germany). It was founded in 2013 in São Paulo, by Colombian David Vélez, and cofounded by Brazilian Cristina Junqueira and American Edward Wible. For more information, visit www.nubank.com.br. About the Role We are looking for a Security Engineer to lead the architecture and automation of our global security infrastructure. In this role, you will drive the strategy for endpoint and network defense across on-premises and multi-cloud environments (AWS, GCP, Azure), operating with high autonomy to solve complex, undefined security challenges. You will be responsible for building tailor-made solutions and establishing the standards that protect a platform impacting millions of lives. As a senior security engineer, you will bridge the gap between deep execution and organizational influence for endpoint mechanisms. Responsibilities Design, implement, and support multi‑country security solutions for on‑premises and cloud infrastructures (endpoint and network), including defining and developing automation to enable large‑scale deployments and operation; Develop and maintain security policies and documentation for new endpoint and network technologies, contributing to high‑level documentation for non‑engineers and detailed technical documentation for engineering teams; Ensure secure configuration and management of endpoints, network systems, and security applications using appropriate security platforms, tools, and operating‑system‑specific controls; Support risk assessments related to endpoints, networks, and information protection, helping identify and mitigate security exposures; Support security reviews and audits, assisting internal audit teams with endpoint and network security issues and compliance activities, and participating actively in discussions; Support to respond to cyber threats, incidents, and anomalies affecting endpoints and networks, anticipating technical issues at the enterprise and platform level and making architectural and design decisions to prevent them; Evaluate build‑vs‑buy alternatives under general direction, articulating trade‑offs between technical, analytical, and platform needs, efficiency vs. thoroughness, and the impact on technical debt. Required Skills and Expertise Strong understanding of operating systems (Windows, macOS, Linux) and core security protocols, including authentication, authorization, and cryptographic principles; Knowledge of network technologies, including routing, switching, network security protocols, and cloud networking (AWS, GCP, Azure); Knowledge of application‑layer technologies, business continuity, disaster recovery (DRP), and secure system design; Experience with automation and programming languages (e.g., Python and Go), including the ability to develop scripts, tools, and system integrations. Technical expertise with cloud and on‑premises infrastructures, including secure architecture, deployment, and operations; Awareness of the latest attack techniques, threat actor behaviors, and methods used to compromise systems and networks; Strong soft skills, including effective communication with technical and non‑technical stakeholders, the ability to guide technical debates, and fast, informed decision‑making during critical events. Role Location São Paulo - SP, Campinas - SP, Rio de Janeiro - RJ or Belo Horizonte - MG. Benefits Health, dental and life insurance Meal allowance Transportation assistance 30 days of paid vacation Equity at Nubank Parking partnership - discounted parking in our office Free bike parking with showers available NuCare - Our mental health and wellness assistance program NuLanguage - Our language learning program Gympass partnership Extended maternity and paternity Leaves Child care allowance ‘Espaço Feijão’- Private nursing and breastfeeding spaces in our buildings Onsite Health Center - Medical support for every Nubanker in our office Diversity & Inclusion At Nubank, we are committed to building a diverse and inclusive workplace. We believe that variety in perspectives, backgrounds, and experiences enriches our company. We accommodate employees and applicants with different backgrounds and embrace equality in hiring.