Principal Software Engineer (MacOS) - Remote EU
Confirmed on the employer's own hiring board on Oct 30, 2026. First seen by Alion on Oct 27, 2026.
About ThreatDown
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)