Who we are Action1 is an autonomous endpoint management platform trusted by many Fortune 500 companies. Cloud-native, infinitely scalable, highly secure, and configurable in minutes—it just works and is always free for the first 200 endpoints with no functional limits.

By pioneering autonomous OS and third-party patching with peer-to-peer patch distribution and real-time vulnerability assessment without requiring a VPN, Action1 eliminates routine IT labor, helps prevent ransomware and security risks, and protects the digital employee experience.

In 2025, Action1 was recognized by

Inc. 5000 as the fastest-growing private software company in America .

The company is founder-led by

Alex Vovk and Mike Walters , entrepreneurs who previously founded Netwrix, a multi-billion-dollar cybersecurity company.

The Role We are looking for a Product Security Engineer to join the team responsible for securing Action1’s multi-tenant SaaS product.

In this role, you will work closely with engineering, product, and security teams to identify risks early, support vulnerability handling, improve secure development practices, and help make product security practical, clear, and actionable.

This is a hands‑on role for someone who understands both software engineering and cybersecurity, enjoys working directly with developers, and wants to help build security into the product without slowing teams down unnecessarily.

What you’ll do

Support PSIRT and vulnerability handling activities

Validate, triage, track, and coordinate security reports

Provide practical remediation guidance to engineering teams

Help validate security fixes and reduce product security risks

Review code, APIs, and architecture to identify security issues early

Conduct threat modeling and security design reviews

Improve security automation in engineering workflows

Support SAST, SCA, secrets scanning, and other security controls

Maintain SBOMs, dependency visibility, and remediation follow-up

Support security assessments,



vulnerability assessments, and penetration testing

Maintain vulnerability handling playbooks, product security procedures, and incident response runbooks

What we’re looking for

3+ years of experience in product security, application security, DevSecOps, or a related cybersecurity field

Strong software engineering background and ability to work effectively with engineering teams

Understanding of application, API, infrastructure, and software supply chain security risks

Experience applying cloud security concepts and practices

Understanding of IAM, network security, logging, monitoring, and secure cloud architecture patterns

Familiarity with vulnerability management, incident response, security assessments, and secure SDLC practices

Experience with threat modeling and security design reviews

Strong communication skills, including professional communication with external researchers and vendors

Ability to work independently and as part of a team in a fast‑moving environment

Nice to have

Genuine interest in cybersecurity and motivation to grow as a product security expert

Hands‑on experience with AWS security controls, best practices, and architecture patterns

Hands‑on experience with C++ or JavaScript

Experience with security testing and automation using scripting, APIs, CI/CD pipelines, or specialized tools

Experience with threat modeling for SaaS, API, cloud, or on‑prem product components

Experience with SBOM generation, dependency visibility, or software supply chain security

What we offer

Fully remote work environment

Opportunity to work on a real security product used by IT and security teams

High ownership and direct impact on product security practices

Close collaboration with engineering, product, and security teams

Fast-growing software company with low bureaucracy and practical decision‑making

Opportunity to improve security processes, automation, and engineering workflows

Supportive team that values clear thinking, ownership, and continuous learning

#J-18808-Ljbffr

📌 Product Security Engineer (Barcelona)
🏢 Action1
📍 Barcelona