ThreatDown is a leader in elite Managed Detection and Response (MDR), purpose-built to empower resource-constrained security teams with high-efficacy protection, without the complexity. As attacks grow faster and more automated, ThreatDown pairs proprietary AI and threat research with analyst judgment to deploy in minutes to deliver high-efficacy protection. Recognized by MRG Effitas, AVLab, and G2, ThreatDown scales security operations to intercept sophisticated attacks at the speed of modern threats. At ThreatDown, you’ll join a team driven by innovation, resilience, and a passion for empowering businesses to thrive securely. If you're ready to make a real impact in cybersecurity, we’d love to meet you.

ThreatDown is looking for…

We’re not looking for people who know all the answers; we want people who can think creatively and are not afraid to bring forward new ideas. The problems we solve are meaningful, exciting, and constantly-evolving your code will support thousands of enterprises customers from emerging threats and restore confidence in using their computers. Our business product team is looking for a Principal Software Developer (MacOS), ready for the challenge of delivering great business products to thousands of users.

Compensation:

100,000 Euros

What You Will Do

- Develop new and exciting products in the fight against malware
- Build cutting edge Enterprise grade endpoint protection for MacOS
- Play a key role in designing and developing tools to support all the ThreatDown initiatives
- Collect and process data and metrics to track emerging threats so we can keep one step ahead of the bad guys
- Support your fellow developers; proactively communicate, document, unit-test, and peer review




- Work collaboratively and effectively with a range of people in an Agile environment
- Create superior results while building new skills
- Work as a part of team to ensure everyone meets their goals

Skills You'll Need To Have

- Understanding of Object-Oriented development practices
- Experience working with Apple’s System Extensions and Network Extension frameworks
- Ability to work on a high-performance team in a high-tech startup or startup-like environment
- Working knowledge of Swift and/or Objective-c coding languages
- Experience with backend development on macOS, including data management, networking, and system integrations
- Ability to debug and optimize macOS applications for performance
- Familiarity with foundational macOS frameworks and development tools, including Foundation, Xcode, Instruments, and LLDB
- Strong understanding of macOS system architecture and internals
- Familiarity with macOS security and distribution requirements, including code signing, entitlements, sandboxing, privacy permissions, and notarization
- Ability to debug, profile, and optimize macOS applications for performance, reliability, and resource efficiency

Good To Have

- Understanding of cybersecurity principles, including least privilege, defense in depth, secure-by-default design, threat modeling, and attack-surface reduction
- Familiarity with secure coding practices, vulnerability management, and common application and network security risks
- Familiarity with Apple platform deployment and management technologies, including MDM and configuration profiles

Perks & Benefit

- Comprehensive medical, dental, and vision insurance coverage
- Employee Referral Bonus Program
- Wellness programs
- Comprehensive Time Off policy
- An opportunity to do something great for yourself and the world (Benefits and Perks subject to change by country/region)

📌 Principal Software Engineer (España)
🏢 Malwarebytes
📍 España