Product Security Engineer (Remote) (Fluent in English)

KnowBe4

Brazil
Remote
Posted 2026-09-09

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Skills named in this job

Penetration testing
Python
AWS
Go
JavaScript
PHP
Ruby
Terraform

Read from the description itself, not inferred.

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What security roles keep asking for: AWS (29%), Python (27%), SIEM (14%), CI/CD (13%), GCP (13%) — counted across their open postings here.

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KnowBe4 has 62 open roles listed here.

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Questions you are likely to be asked

Why do you want to join KnowBe4?
What is your experience with Penetration testing? Tell me one thing you learned the hard way.
How would you cut the cloud bill of a system without hurting it?
How do you keep secrets and access safe in your infrastructure?
Walk me through how code gets from a commit to production where you work.

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KnowBe4 empowers the modern workforce to make smarter security decisions every day. Trusted by more than 70,000 organizations worldwide, KnowBe4 is the pioneer of digital workforce security, securing both AI agents and humans. The KnowBe4 Platform provides attack simulation and training, collaboration security, and agent security powered by AIDA (Artificial Intelligence Defense Agents) and a proprietary Risk Score. The platform leverages 15-years of behavioral data to combat advanced threats including social engineering, prompt injection, and shadow AI. By securing humans and agents, KnowBe4 leads the industry in workforce trust and defense.

Please submit your resume in English.

To learn more about our team and office culture in São Paulo, Brazil, visit the following links.
Careers Page: https://www.knowbe4.com/careers/locations/sao-paulo
Glassdoor: https://www.glassdoor.com/Location/KnowBe4-S%C3%A3o-Paulo-Location-EI_IE969384.0,7_IL[…]M_-C1lsxoZq7Cx8IriVE8MkrzuTmnJzqego77RAWZz9sqGt_55BflwYKpQeg
LinkedIn: https://www.linkedin.com/company/knowbe4/life/brazil/

KnowBe4 is seeking a mid-level Product Security Engineer in Brazil to join our Security team! In this role, your primary focus will be hands-on penetration testing and security reviews, evaluating application code before and after it hits production to ensure company and customer data remain safe.

As our engineering team accelerates development, you will play a critical role in scaling our security coverage, triaging findings, and collaborating directly with global engineering teams across the US and Brazil.

Responsibilities:

Application Security Testing & Pentesting: Conduct automated and manual security assessments and penetration tests across web, mobile, and traditional applications.
Code Security Reviews: Analyze source code across multiple programming languages to identify vulnerabilities and guide remediation before and after production deployment.
Vulnerability Triage & Remediation: Work closely with engineering teams to assess, prioritize, and resolve application vulnerabilities.
Threat Modeling & Automation: Maintain threat models and build security automations to streamline security testing workflows.
Security Engagement: Partner with product and development teams to embed secure coding practices throughout the software development lifecycle (SDLC).

Requirements:

Experience in Application Security, Penetration Testing, or Red Teaming.
Pentesting Expertise: Strong hands-on experience with both automated and manual web, mobile, and traditional application pentesting
Code Comprehension: Proven ability to read and analyze source code in multiple languages (such as Ruby, PHP, Go, JavaScript, or Python)
Security Fundamentals: Broad understanding of web application vulnerabilities (e.g., OWASP Top 10, CWE) and core information security concepts
Language & Communication: Strong technical English communication skills (written and spoken) to collaborate smoothly across international teams
Cultural Fit: Collaborative, open mindset with a strong focus on teamwork and positive team dynamics

Preferred / Nice-to-Have

Experience with cloud computing environments (AWS, Terraform)
Familiarity with security tools (e.g., Burp Suite, SAST/DAST, dependency scanning)
Experience with Python scripting or leveraging AI tools in security workflows
Relevant industry certifications (e.g., OSCP, OSWE, GPEN, CISSP)

Our Fantastic Benefits

We offer company-wide bonuses based on monthly sales targets, employee referral bonuses, adoption assistance, tuition reimbursement, certification reimbursement, and certification completion bonuses - all in a modern, high-tech, and fun work environment. For more details about our benefits in each office location, please visit www.knowbe4.com/careers/benefits.

Note: An applicant assessment and background check may be part of your hiring procedure.

Individuals seeking employment at KnowBe4 are considered without prejudice to race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, gender identity, sexual orientation or any other characteristic protected under applicable federal, state, or local law. If you require reasonable accommodation in completing this application, interviewing, completing any pre-employment testing, or otherwise participating in the employee selection process, please visit www.knowbe4.com/careers/request-accommodation.

No recruitment agencies, please.

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Listed on greenhouse · posted 2026-09-09. ApplySarthi collects openings and links to application pages; the role is advertised by KnowBe4, not by us.