Senior Penetration Tester – Offensive Security Lead

LSEG; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

LSEG is seeking a Senior Penetration Tester to join our internal offensive security team. This hands-on role plans and executes pentests across diverse systems, collaborating with application teams to scope, execute, and report security assessments.

Ideal candidates will own engagements end-to-end, develop custom tools, and stay current with threats and techniques. Strong English communication and experience in large enterprise environments are required.

Qualifications

• Hands-on pentesting across web apps, APIs, thick clients, and infrastructure.

Responsibilities

• Conduct in-depth penetration tests on applications, infrastructure, and cloud environments.

Skills

Penetration testing

Web applications

APIs

Thick client

Active Directory

Cloud environments

Cloud-native

Burp Suite

Automation

Reporting

Tools

Burp Suite

Docker

Kubernetes

Command-line tools

Custom scripts

Job description

LSEG is seeking a Senior Penetration Tester to join our internal offensive security team. This hands-on role plans and executes pentests across diverse systems, collaborating with application teams to scope, execute, and report security assessments.

Ideal candidates will own engagements end-to-end, develop custom tools, and stay current with threats and techniques. Strong English communication and experience in large enterprise environments are required.