Principal Security Engineer

Principal Portugal Full-time Posted 2 months ago

Skills & stack

Tools & Infra

AWS Terraform

Skills

Application Security Penetration Testing

About the role

Principal Security Engineer at Talkdesk, a full-time role based in Portugal. The work is hands-on and technical, with focus on offensive and defensive security, AI security, and cloud infrastructure hardening.

Work format

Full-time. Based in Portugal.

Skills and tools

AWS
Terraform

What to prepare

Prepare a short example of manual pentesting work on an application or API.
Bring a walkthrough of security work in AWS and Terraform.
Have an example of AI security testing or tooling for LLM features ready.

Responsibilities

Run manual penetration tests on applications and APIs.
Review secure code in Go, Python, and Java, then help drive remediation.
Test AI features for prompt injection and data poisoning.
Red team LLM features and build security tooling for AI pipelines.
Harden AWS infrastructure, including IAM least privilege, container security, and policy enforcement.
Support security architecture and mentor senior engineers on security-by-design work.

Requirements

Strong application security and penetration testing skills.
Hands-on AWS experience with Terraform.
Experience with cloud platform security and infrastructure hardening.
Ability to work on AI systems security.

Nice to have

Open-source security tool contributions.
OSCP, OSWE, or AWS Security certifications.
SOAR workflow experience.

Apply for this role

Send a short intro — the hiring team will review and respond.

Create candidate account Log in

Talkdesk

Product

Cloud contact-center software company founded in 2011 by Tiago Paiva and Cristina Fonseca, with major engineering offices in Lisbon and Porto alongside its US headquarters. Talkdesk's AI-powered CX Cl

Location: Lisbon, Portugal
Team size: 1500+
Remote policy: Hybrid

View company profile