Principal Software Engineer, macOS​/Linux Agents

Airlock Digital is a global leader in application control and allow listing. We seek to empower every organization to run only what they trust and operate free from malware and ransomware.

With rapid growth across Australia, North America, and EMEA. We are committed to our core values, respect, determination, and integrity. We support a diverse and expanding global customer base. At Airlock, we pride ourselves on being a team of humble, collaborative, and driven professionals who support one another and share a passion for cybersecurity.

We are looking for a Principal Software Engineer to help shape the next generation of Airlock Digital’s macOS and Linux endpoint technology. This is a senior individual-contributor role with broad technical influence. You will set direction through architecture and design work, turn product and customer needs into practical engineering plans, and contribute directly by implementing features, reviewing code, and resolving complex defects.

The macOS/Linux Agent spans operating-system event monitoring and enforcement, privileged services, local policy and data management, secure communications, installation and update workflows, and platform-specific user experiences. You will bring strong macOS and Linux systems judgment to thiswork, build alignment around important technical decisions, and help other engineers solve difficult problems. You will work across engineering, product, QA, security, support, and cloud teams to improve product quality and customer outcomes.

• Set and communicate the technical direction for Airlock Digital’s macOS and Linux Agents. Translate product and customer needs into sound designs, architectural decisions, and executable engineering plans.

• Contribute directly to the shared managed-language codebase and platform-specific components by implementing features, reviewing code, and resolving high-priority defects.

• Lead design, architecture, and code reviews. Build alignment around the boundaries between shared Agent capabilities and operating-system-specific integrations whilemaintainingsecurity, reliability, performance, and maintainability.

• Own technical outcomes for application-control enforcement and Agent lifecycle behavior across supported macOS releases and Linux distributions, including event monitoring, policy evaluation, trusted software handling, installation, updates, recovery, and secure communications.

• Diagnose difficult production issues involving privileged services, concurrency, resource usage, file systems, process execution, operating-system security controls, package formats, and processor architectures.

• Raise the engineering bar through technical mentorship, knowledge sharing, automated testing, observability, and improvements to build, release, and diagnostic capabilities. Partner with product, QA, security, support, and cloud engineering to manage technical risk and coordinate delivery.

• 8-12+ years of professional software engineering experience, includingsignificantexperiencebuilding production systems software in one or more managed languages, with strong knowledge of concurrency, resource management, runtime behavior, error handling, performance, reliability, and low-level debugging.

• Strong systems-engineering experience across macOS and Linux, with deepexpertisein at least one platform and demonstratedability to design, debug, and deliver effectively on the other.

• A record of designing, shipping, and sustaining security-critical endpoint software, privileged Agents, operating-system services, or another always-on product where correctness, stability, performance, and safe failure behavior are essential.

• Strong knowledge of Unix-like operating systems, including processes and signals, permissions, file systems, services, inter-process communication, package management, and privileged execution.

• Experience integrating managed-language software with native operating-system APIs and building concurrent, event-driven software that must make reliable, time-sensitive decisions.

• Sound security judgment around code and publisher trust, cryptographic hashing, TLS and certificates, authentication and authorization, sensitive local data, secure IPC, persistence, and software updates.

• Proven technical leadership in a mature software product. This should include architecture and design decisions, resolving…