DFFenders work at the deepest layers of modern mobile systems

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Current Openings

QA Engineer - Mobile Device Security

Engineering
Full-time
Bassano del Grappa (Italy), Madrid (Spain), Herzliya (Israel), or Seoul (South Korea)
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Director of Security Forensics & Professional Services

Engineering
Full-time
Remote - Europe
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iOS Security Researcher

Engineering
Full-time
Remote
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Threat Detection Engineer - Mobile

Security & Research
Full-time
Remote
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Senior Software Engineer - Mobile Device Security

Engineering
Full-time
Remote
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How to Apply

You can apply to open positions above or you can send us:

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A short introduction
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A résumé or CV
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Links to relevant research, tools, or publications (if available)
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Please read recruitment privacy notice* before you apply

We strongly encourage candidates to share technical work, research, or projects that demonstrate their approach to solving complex systems problems.

Apply directly through the open positions above or send us an email:

careers@df-f.com
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Download Public Key here
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Understanding platforms the way attackers do and helping defenders see the same reality.

Our work focuses on mobile platforms at their lowest levels — kernel behavior, system security mechanisms, exploitation techniques, and the ways advanced threats operate beneath conventional visibility.

If you are interested in solving difficult problems in modern operating systems and building technologies that expose threats where they actually reside, we would like to hear from you.

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Why Work With Us

01.

Meaningful problems

The systems we build help detect the most sophisticated threats targeting government and national security environments.

02.

Deep technical work

Our engineers work on reverse engineering malware, analyzing unique exploitation techniques, and system-level threat detection; problems that require understanding platforms from the inside out.

03.

Research-driven culture

Our technologies are grounded in continuous research into mobile operating systems, vulnerability classes, and attacker techniques. 

04.

Learning Environment

Curiosity, technical depth, and the ability to reason about operating system behavior are often more valuable than experience with any specific tool or technology.

05.

Small, focused teams

We operate in small, focused teams working on complex technical challenges where technical depth and collaboration really matters.

What We Offer

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Remote-first Flexibility / Hybrid

Outcome-driven, remote-first, enabling work when and where you are most productive.
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Tools & Research Infrastructure

Access to devices, hardware, and infrastructure required for advanced mobile platform research.
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Mentoring & Collaboration

Work alongside top security researchers and learn from the industry's best.
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Competitive Compensation

Compensation and benefits designed to attract and retain top technical talent.