Senior Security Infrastructure Engineer

Sezzle

FULLY_REMOTE

FULL_TIME

Brazil

Posted Apr 9, 2026

Description

The salary range for this role is $5,000 - $9,500 per month (Gross in USD)

About Sezzle:

With a mission to financially empower the next generation, Sezzle is revolutionizing the shopping experience beyond payments, blending cutting-edge tech with seamless, interest-free installment plans that make shopping smarter and more accessible. We're not just transforming payments; we're redefining how people discover, interact with, and purchase the things they love while driving real impact on merchant sales through increased conversions and higher order values. As we continue to shape the future of fintech and retail, we're building an innovative, dynamic team passionate about creating more than just a transaction but a truly unique shopping journey. If you're excited about pushing boundaries in tech and delivering a game-changing experience for consumers and merchants alike, come join us at Sezzle and help create the future of shopping!

Compensation:

For this principal development role, with 6+ years of experience, the compensation range is $5,000 - $9,500 USD based on experience level per month and in gross amount. This range acknowledges the extensive expertise, leadership capabilities, and significant contributions expected at this level, offering a competitive salary to reflect the value of advanced skills and experience

About the Role:

We are seeking a hands-on, high-impact Senior Security Infrastructure Engineer to help strengthen Sezzle's security posture across cloud infrastructure, applications, and developer workflows. This role is ideal for someone who thrives in a fast-paced environment and wants to work on real-world security problems at scale.

As a Senior Security Infrastructure Engineer, you will have a high degree of ownership and autonomy to identify risks, investigate issues, and drive meaningful security improvements across our systems. You will work across vulnerability management, detection engineering, supply chain security, and incident response - partnering closely with engineering teams to ensure security is practical, effect

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Interview Prep Guide

AI-generated

Preparation Strategy

To prepare for this role, focus on reviewing cloud security best practices, familiarizing yourself with security frameworks and compliance regulations, and practicing explaining technical security concepts to non-technical stakeholders. It's also essential to highlight your experience working in security, your ability to communicate technical concepts, and your alignment with the company's mission and values. Reviewing system design principles and practicing designing secure architectures will also be beneficial.

Likely Interview Rounds

1. Technical~60 min
What to prep: Review cloud security best practices, familiarize yourself with security frameworks and compliance regulations, and practice explaining technical security concepts to non-technical stakeholders.
- How do you stay up-to-date with the latest security threats and trends?
- Can you explain the difference between symmetric and asymmetric encryption?
- How would you design a secure cloud infrastructure for a fintech company?
- What is your experience with vulnerability management and penetration testing?
2. Behavioral~60 min
What to prep: Prepare examples of your experience working in security, highlight your ability to communicate technical concepts to non-technical teams, and review the company's mission and values to demonstrate your alignment with their goals.
- Tell me about a time when you identified a security risk and implemented a solution.
- Can you describe your experience working with cross-functional teams to implement security measures?
- How do you handle conflicting priorities and tight deadlines in a fast-paced security environment?
3. System design~90 min
What to prep: Review system design principles, practice designing secure architectures, and familiarize yourself with cloud security services and tools.
- Design a secure architecture for a cloud-based payment processing system.
- How would you implement a zero-trust security model in a cloud environment?

Most Likely Questions

What do you know about our company and our security challenges?
How do you handle security incidents and respond to threats?
Can you explain the concept of defense in depth and how you would implement it in a cloud environment?

Common Pitfalls

Lack of experience with cloud security and infrastructure
Inability to communicate technical security concepts to non-technical stakeholders
Limited knowledge of security frameworks and compliance regulations

Free Prep Resources

• AWS Security Hub
• Google Cloud Security
• Microsoft Azure Security
• OWASP
• Cybrary

Salary Negotiation Tips

Given the salary range of $5,000 - $9,500 per month, be prepared to negotiate based on your experience level and the value you can bring to the company. Consider highlighting your advanced skills, leadership capabilities, and significant contributions to justify a salary at the higher end of the range.

Preparing interview guide...

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About Sezzle

Sezzle is a financial technology company that provides payment processing solutions. It offers a buy-now, pay-later service that allows customers to pay for purchases in installments.

Company Size: 201-500 employees

Industry: FinTech

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