Data Engineer
Senior Security Engineer (Offensive Security)
Campinassenior
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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.
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About the team
We are looking for curious, driven individuals who are passionate about enhancing security maturity through offensive techniques — and who think beyond their own lane. As a Senior Security Engineer on our Offensive Security team, you won't just execute tasks: you'll take ownership of identifying and mitigating security threats before they impact our customers, Nubankers, and financial assets.
Our Offensive Security team plays a strategic role at Nubank. By simulating real-world attacks, we strengthen our security posture and continuously evolve our defense strategies to stay ahead of adversaries. We think boldly, aim high, and challenge our own assumptions about what secure looks like — because the status quo is always a hypothesis to test, not a boundary to accept.
You'll work closely with security engineers, product teams, and other stakeholders to educate, guide, and support them in building security in from the ground up. This is an exciting opportunity to drive real impact across the whole organization — and to do it as an owner, not just a contributor.
We believe diverse perspectives make our security stronger. Whether your background comes from CTF competitions, bug bounty programs, traditional pentesting, or a non-linear path into offensive security — we want to hear from you.
As a Senior Security Engineer (Offensive Security), you'll take ownership of:
- Driving infrastructure, web, and mobile/API pentests end-to-end;
- Crafting and executing red team operations that challenge our defenses;
- Leading vulnerability management initiatives and helping prioritize remediation;
- Building tools that enhance offensive security reviews and automate repetitive tasks;
- Partnering with development squads to ensure security issues are understood and addressed at the root;
- Contributing to architectural and logical reviews of different systems and products.
What we're looking for
Must have:
- Strong Offensive Security background, with a focus on Red Team activities;
- Deep experience across the pentest lifecycle: reconnaissance, enumeration, exploitation, post-exploitation, lateral movement;
- Strong knowledge of current and historical attack vectors, exploitation techniques, and how to remediate them;
- Ability to replicate the behavior of Advanced Persistent Threat (APT) groups;
- Experience with security frameworks such as OWASP;
- Experience working in cloud environments (AWS preferred);
- Ability to harden and improve CI/CD Pipelines and experience with SDLC;
- Solid knowledge across security domains, with strong depth in Operating Systems, Networks, Databases, and Infrastructure Architecture;
- Experience with Threat Modeling.
Nice to have:
- Active participation in CTF competitions or Bug Bounty programs;
- Proficiency with security assessment tools such as Burp Suite, Nmap, Metasploit, SQLmap, Nessus, Censys, Shodan, or Frida.re — or any equivalent tooling that supports security validation.
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/.
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.
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