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) #J-18808-Ljbffr

📌 Principal Software Engineer (Castilla-La Mancha)
🏢 Malwarebytes
📍 Castilla-La Mancha