David Kennedy Recruitment is working with a rapidly growing technology company with over 50 million users worldwide that is seeking to onboard a Security Engineer to join their R&D; team.

As the company's sole dedicated Security Engineer, the successful candidate will take end-to-end ownership of security operations, covering application security, vulnerability management, governance and risk, and emerging AI security challenges. The company's products include adult/NSFW content, so candidates must be fully comfortable working with this material.

Position: Security Engineer (AppSec / GRC / AI Security)

Location: Europe/ASIA, Remote

Employment type: B2B engagement preferred

DUTIES AND RESPONSIBILITIES:

- Application security: review code, find and fix vulnerabilities, work with developers in Git/GitHub, and coordinate external pen tests and audits.

- Governance, risk and compliance: build and maintain the security risk register, assess exposure across systems, support audit follow-up, and prioritise fixes by risk and business impact.

- Monitoring and awareness: watch alerts and threats, run awareness programmes and phishing simulations, and provide occasional evening and weekend cover.

- IT security and access: handle secure onboarding and offboarding, device security (MDM) and access permissions, and tighten internal controls.

- AI security: track risks to generative AI platforms (prompt injection, jailbreaks, filter bypasses)



and vulnerabilities in third-party AI providers.

REQUIREMENTS:

- 2–3+ years of hands-on security engineering experience, with flexibility for exceptional scale-up experience

- Strong application security experience, including code reviews and vulnerability remediation

- Proven experience conducting or coordinating security audits and penetration tests

- Comfortable coding and working directly with Git/GitHub

- Practical scripting or automation skills, ideally Python or Bash

- Previous experience within an AI company or a scale-up with 50+ employees

- Sound understanding of security governance, risk assessment and prioritisation

- Ability to independently identify, investigate and resolve security issues, and to take end-to-end ownership in a fast-paced environment

- Excellent English communication skills

- Based in Europe, with approximately 80% overlap with CET working hours

- Comfortable with occasional evening/weekend security monitoring

- Fully comfortable working with adult/NSFW content as part of daily responsibilities

BENEFITS:

- Fully remote working from Europe

- Opportunity to own security for a fast-growing AI platform with over 50 million users

- Direct collaboration with engineering leadership

- Hands-on, non-advisory role with real responsibility for security outcomes

- And many more!!!

📌 Security Engineer (Barcelona)
🏢 David Kennedy Recruitment
📍 Barcelona