Senior Security Engineer (AI Security)

Nubank; Brasil; Híbrido; BRL 180 000 - 360 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Equity potential

Meal Card

Public Transportation Commuting

NuCare - Psychological, Financial and…

Life Insurance

Medical Plan

Dental Plan

NuLanguage - Language Course Program

Nucleo - Learning platform

Extended Parental Leave

Daycare Allowance

Parental Consultancy

Work-from-home Allowance

Gym Partnerships

30 days of paid vacation

Relocation Assistance Package

Resumo da oferta

Nubank is seeking a Senior Security Engineer to strengthen AI security across our platforms and datasets. You will identify vulnerabilities, design security controls, and collaborate with engineering teams to embed security into the AI development lifecycle.

The role emphasizes hands-on security engineering, risk analysis, and proactive input on secure AI adoption, with a hybrid work model across major Brazilian cities. Equity and comprehensive benefits are part of the package.

Qualificações

• Knowledge of security frameworks (OWASP and others)
• Programming in Python and ML-related languages
• Analytical mindset to identify risks in complex systems
• Strong communication for technical and non-technical audiences
• Hands-on with CI/CD security integrations and tooling
• Experience with high-scale environments
• Experience in zero-trust and regulated environments

Responsabilidades

• Identify and analyze vulnerabilities, providing insights and recommendations for mitigation
• Contribute to the development and implementation of cutting-edge security frameworks for AI security
• Work with development teams to integrate security measures into the AI lifecycle
• Assist in incident response planning for AI-related security incidents and run simulations
• Develop and integrate tools to automate security assessments and controls
• Pursue knowledge through R&D to support innovation
• Raise Nubank awareness towards safe AI usage

Conhecimentos

OWASP

Python

Analytical mindset

Communication

CI/CD security

Scalability

Zero-trust

Ferramentas

SAST

DAST

SCA

Descrição da oferta de emprego

About Nu

Nu is the leading digital bank in Latin America, serving 135 million customers across Brazil, Mexico, and Colombia. The company has been leading an industry transformation by leveraging data and proprietary technology to develop innovative products and services.

Guided by its mission to fight complexity and empower people, Nu caters to customers\' complete financial journey, promoting financial access and advancement with responsible lending and transparency. The company is powered by an efficient and scalable business model that combines low cost to serve with growing returns.

Nu\'s impact has been recognized in multiple awards, including Time 100 Most Influential Companies, Fast Company\'s Most Innovative Companies, and Forbes World\'s Best Banks.

Visit our Institutional Page

About the role

We are looking for a Senior Security Engineer to work closely with our teams to strengthen the security and resilience of our AI ecosystem. In this role, you will identify and assess security risks across machine learning models and Generative AI applications, design and implement security controls, and help build security frameworks and tooling for the safe adoption of AI at scale.

You will partner with engineering teams to integrate security throughout the AI development lifecycle, automate security assessments and controls, and contribute to the continuous evolution of our AI security practices. This role combines hands-on security engineering, risk analysis, and applied AI security, requiring strong technical expertise, sound judgment, and a proactive mindset to help ensure the secure and responsible use of AI technologies.

Main Responsibilities

• Identify and analyze vulnerabilities, providing insights and recommendations for mitigation;


• Contribute to the development and implementation of cutting-edge security frameworks, ensuring the responsible and secure usage within our AI ecosystem;


• Work closely with development teams to integrate security measures into the AI development lifecycle;


• Assist in incident response planning specific to AI-related security incidents and participate in simulations to test response effectiveness;


• Develop and integrate tools to automate security assessments and controls;


• Proactively seek knowledge and engage in research and development initiatives to support innovation;


• Raise Nubank awareness towards safe AI usage.

Must Have

• Knowledge of security frameworks, such as OWASP;


• Programming skills in languages commonly used in machine learning (e.g., Python);


• Proactive mindset with the ability to analyze complex systems and identify potential security risks;


• Strong communication skills to effectively convey complex security concepts to technical and non-technical stakeholders.


• Hands-on experience with CI/CD pipelines and implementing security tools (e.g., SAST, DAST, SCA).


• Experience with high scalability environments.


• Experience in zero-trust and regulated environments.

Nice to Have

• Experience with AI frameworks and libraries (e.g. PyTorch, TensorFlow);


• Expertise with automation programming languages (e.g. Bash, Ansible, Go);


• Knowledge of cloud infrastructure technologies (e.g. AWS, K8S, Terraform);


• Knowledge of Machine Learning and Generative AI concepts and technologies (e.g. HuggingFaces, MCP).

Role Location

Hybrid: Belo Horizonte, Rio de Janeiro, São Paulo, Campinas - SP.

Our Benefits

• Chance of earning equity at Nubank


• Food/ Meal Card (Vale-Refeição and/or Vale Alimentação)


• Public Transportation Commuting Benefit (Vale-Transporte)


• NuCare - Psychological, Financial and Legal Assistance Program


• Life Insurance


• Medical Plan


• Dental Plan


• NuLanguage - Language Course Program


• Nucleo - Our learning platform of courses


• Extended Parental Leave


• Daycare Allowance


• Parental Consultancy


• Work-from-home Allowance


• Gym Partnerships


• 30 days of paid vacation


• Relocation Assistance Package, if applicable

Work Model for this Role

Hybrid 2-3 times/week : Our hybrid work model brings us to the office at least twice a week, on strategic days designed to maximize team connection and collaboration. For more details, visit https://building.nubank.com/nu-hybrid-work-model/

Explore how we build technology at Nubank:

• building.nubank.com.br


• youtube.com/@building.nubank


• Listen to our stories on Spotify

Our recruitment process may involve the use of artificial intelligence-enabled tools, such as automated interview transcription and analysis, to support the evaluation process. Artificial intelligence is not used to make final hiring decisions; all decisions are made by human reviewers.