Principal Software Engineer (MacOS) - Remote EU

Malwarebytes; Ireland; Remote; EUR 90,000 - 110,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Employee Referral Bonus Program

Wellness programs

Comprehensive Time Off policy

Job summary

ThreatDown is seeking a Principal Software Developer (MacOS) to design and build enterprise-grade endpoint protection for macOS. You will develop new products, contribute to toolchains, and analyze threat data to stay ahead of attackers.

Join a high-velocity team delivering impactful security solutions to thousands of enterprise users in an Agile environment. You will mentor peers and expand your expertise in macOS internals and security practices.

Qualifications

• Proficiency in Swift and/or Objective-C required.
• Experience with Apple System Extensions and Network Extension frameworks.
• Strong OO design and coding skills in macOS environments.
• Experience with macOS data management, networking, and system integrations.
• Ability to debug and optimize macOS apps for performance and reliability.
• Familiarity with Foundation, Xcode, Instruments, LLDB.
• Knowledge of macOS security, code signing, entitlements, sandboxing, notarization.

Responsibilities

• Develop new and exciting products in the fight against malware.
• Build enterprise-grade endpoint protection for macOS.
• Design and develop tools to support ThreatDown initiatives.
• Collect and process data/metrics to track emerging threats.
• Collaborate with developers; document, unit-test, and peer review.
• Work in an Agile environment with cross-functional teams.
• Pursue excellence while building new skills and meeting goals.

Skills

Object-oriented development

System Extensions

Network Extension frameworks

Swift

Objective-C

macOS backend

Data management

Networking

System integrations

Debugging & performance

Foundation/Xcode

macOS security & notarization

Job description

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)