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 Premio 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 (MacOS) - Remote EU (Italia)
🏢 Malwarebytes
📍 Italia