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macOS Software Engineer

2 weeks ago

London Area, United Kingdom ThreatSpike Full time £60,000 - £120,000 per year

macOS Software Engineer (Low-level macOS Specialist)

Remote (Must have right to work in the UK)

About ThreatSpike

At ThreatSpike, we believe that every company, no matter its size, should have access to world-class cybersecurity. Our mission is to redefine how security is delivered, making it effortless, effective, and scalable—without the usual barriers of budget, expertise, or team size.

Our end-to-end, fully managed security platform is changing the way businesses protect themselves. With rapid deployment in just a few hours, our software-defined security solution continuously monitors network activity, proactively identifies threats, and provides real-time protection—all backed by a team of world-class analysts and penetration testers. Unlike traditional models, our flexible per-seat licensing means businesses can scale security as they grow, without being constrained by budget cycles.

ThreatSpike is growing fast, and this is a rare opportunity to join at a pivotal moment. We look for high-potential individuals who want to push themselves, take ownership, and make a real impact. If you're ambitious, thrive in fast-moving environments, and want to be part of a company where your work directly fuels growth, this is the place for you.

The Role

  • Design, develop, and deploy innovative security solutions from the ground up, written in C++ and a custom cross-platform scripting language.
  • Contribute to low-level development of our macOS EDR agent and its interfaces with the OS, improving feature parity against our Windows and Linux agents.
  • Collaborate with cross-functional teams to solve complex, real-world problems and deliver high-impact security features.
  • Work on a distributed architecture processing 40+ billion events a day, ensuring our platform is secure, scalable, and high-performing.
  • Participate in the entire software development lifecycle, including requirements gathering, design, coding, testing, and deployment.
  • Write clean, maintainable, and efficient code while adhering to best practices in software development.
  • Engage in code reviews, mentor junior developers, and ensure the overall quality of the codebase.
  • Continuously learn and adopt new technologies, staying on the cutting edge of security, software engineering, and development methodologies.
  • Solve complex problems related to security, low-level system architecture, and networking.
  • Contribute to building the next-generation security platform, which is used by businesses worldwide to prevent and mitigate cyberattacks.

First 3 Months:

  • Get familiar with the existing platform, tools, and systems (C++, Make, Perforce, Jira).
  • Contribute to development by working on new features, bug fixes, and optimizations.
  • Participate in the development process, including project planning and code reviews.
  • Learn the security protocols and foundational principles behind the platform's design.

After 12 Months:

  • Own significant modules of the platform, including core security features like real-time threat detection or automated remediation.
  • Improve performance and scalability of the system, ensuring it can handle increased traffic and complex use cases.
  • Lead the development of new, innovative security features, contributing to both architecture and implementation.
  • Mentor junior developers and help guide the team's engineering best practices.
  • Collaborate across teams to enhance and evolve the platform based on customer needs and market demands.

About You

  • Demonstrable experience with C++ (required)
  • Deep, demonstrable knowledge of the low-level macOS system and demonstrable experience writing macOS System Extensions (such as DriverKit, Endpoint Security Framework, or formerly KEXTs) (required)
  • Strong problem-solving skills, with a drive to tackle complex technical challenges.
  • Self-motivated, eager to learn new technologies, and able to work independently in a fast-paced, dynamic environment.
  • Enjoys developing systems from first principles and building software from the ground up.
  • Passionate about security with an understanding of security concepts and protocols.
  • Familiarity with tools like Make, Perforce, and Jira is a plus.

Why Join ThreatSpike?

  • Be at the forefront of cybersecurity innovation – Help build a next-generation security platform that's redefining the industry.
  • High-impact role – Your work will directly shape the security of thousands of companies worldwide.
  • Autonomy & Growth – Enjoy the freedom to design, scale, and innovate in a fast-moving environment with ample opportunities for learning and professional development.
  • Work with cutting-edge technologies – You'll have the opportunity to work on complex security challenges using technologies like C++, distributed systems, a microservice-like architecture, and more.
  • Collaborate with experts – Join a team of talented engineers, security experts, and innovators who are passionate about pushing the boundaries of cybersecurity.

Company benefits:

  • Support for professional growth - we encourage continuous learning through both company-provided training, and self-driven education - including financial, for professional certification attainment.
  • Competitive remuneration – Regular salary reviews, performance-based incentives, and long-term incentives.
  • Fully remote role – Work from anywhere with occasional team meet-ups and events, all expenses paid.
  • Flexible work culture – We value work-life balance and give you the autonomy to manage your schedule.
  • Inclusive & innovative team – Join a forward-thinking company where diverse perspectives and ideas are valued.