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Senior Security Infrastructure Engineer

SezzleArgentina, RemoteDV-Development
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Posted
9 Apr 2026
Status
Open · checked 7d ago

About this role

Sezzle is seeking a remote Senior Security Infrastructure Engineer based in Argentina to strengthen security across cloud infrastructure, applications, and developer workflows. This role suits a hands-on technical professional with extensive experience who thrives in a fast-paced environment and wants to solve real-world security challenges at scale.

Role Overview

As a Senior Security Infrastructure Engineer, you will enjoy a high degree of ownership and autonomy to identify risks, investigate issues, and drive meaningful security improvements across all systems. You will combine hands-on security operations with exploratory design work, spending significant time investigating and resolving incidents while building new capabilities in detection and data protection.

Key Responsibilities

Lead and operate vulnerability management across infrastructure, platforms, and applications, including internal scans and dependency analysis.
Build, operate, and mature SIEM and XDR capabilities such as log ingestion, detection rule development, and alert tuning.
Investigate and respond to security incidents across cloud infrastructure and applications to perform root cause analysis.
Design and implement detection strategies for suspicious activities and data exfiltration patterns.
Lead threat modeling exercises and security design reviews to identify risks early in architecture.
Drive infrastructure and CI/CD hardening initiatives to reduce software and container supply chain risks.
Partner with engineering teams to remediate vulnerabilities and support compliance frameworks like PCI DSS and SOC 2.
Develop automation and leverage artificial intelligence to improve efficiency in security operations and response.

Requirements

6+ years of experience in security, software, or infrastructure engineering, focusing on cloud-based production systems.
Strong hands-on experience in vulnerability management, scanning, triage, validation, and remediation.
Experience working with SIEM platforms for detection engineering, monitoring, and incident response.
Strong knowledge of AWS, Linux, and Kubernetes infrastructure security architecture and hardening.
Experience improving infrastructure security, CI/CD hardening, and mitigating software supply chain risks.
Demonstrated experience working with large language model tools like Claude to enhance productivity, research, and communication.

Nice to Have

Experience designing and tuning detection rules and reducing alert noise.
Familiarity with log-based detection, telemetry pipelines, and security analytics use cases.
Background in designing secure CI/CD workflows to reduce exposure to vulnerable dependencies.

Skills and Tools

Python, Golang, TypeScript, React
AWS, Kubernetes, Linux
SIEM platforms such as Wazuh, Splunk, or ELK
Container and dependency security tools like Snyk, Trivy, or Grype
Git, GitLab, Elasticsearch, MySQL, Postgres

Salary and Benefits

Monthly gross salary ranging from $5,000 to $9,500 USD based on experience level.

About the Company

Sezzle is on a mission to financially empower the next generation by revolutionizing the shopping experience with seamless, interest-free installment plans. The company drives real impact on merchant sales while redefining how people interact with the things they love, building a dynamic team passionate about shaping the future of fintech and retail.

How to Apply

Candidates should visit the official company careers page to apply for this remote position.

Skills and tech stack

PythonAWSKubernetesReactTypeScriptGolang

Questions candidates ask

What is the location requirement for this role?

This position is remote based in Argentina.

What is the salary range for the Senior Security Infrastructure Engineer?

The gross salary ranges from $5,000 to $9,500 USD per month, depending on experience.

How many years of experience are required?

Candidates must have 6+ years of experience in security, software, or infrastructure engineering.

Is artificial intelligence experience required for this job?

Yes, demonstrated experience working with Claude or equivalent large language model tools is required for productivity, research, and communication.

What compliance frameworks are relevant to this position?

The role involves supporting and implementing security controls aligned with PCI DSS and SOC 2 compliance frameworks.

Ready to apply?

The application is on the official Sezzle careers page.

Apply on company site