Software Development Engineer II – Sensors / Systems & Security Engineering

Most boards and executives are currently flying blind when it comes to cyber risk. They are guessing. At Safe, we’ve built an AI-driven engine that finally gives the C-Suite a clear, quantified, and real-time view of their security posture. We don’t just provide data; we provide certainty.

We are a $170M Series C-funded category leader. We don’t play in the mid-market; we operate at the highest levels of global enterprise. Today, we are proud to serve 10% of the Fortune 500, protecting global icons such as Apple, Netflix, AT&T, Verizon, and Victoria’s Secret.

As we scale toward our next chapter, we are looking for high-performers who want to do the best work of their careers at the intersection of AI and Cybersecurity.

The Culture Memo: Our Operating System

Safe is not a typical corporate environment. We are a high-intensity, mission-driven team. We value builders who want to define a category and work alongside people who are equally committed to excellence.

Extreme Ownership: We don’t do "not my job." We hire people who see a gap and own the solution from start to finish.

The Elite Standard: We serve the most sophisticated companies on the planet. Our work must be bulletproof. Whether it’s a line of code or a sales deck, we aim for Tier-1 quality every time.

Methodology & Rigor: We don’t wing it. From Force Management and MEDDICC in sales to data-driven sprints in engineering, we rely on proven frameworks to stay disciplined and predictable.

Radical Candor: We move too fast for politics or sugar-coating. We value direct, honest feedback that helps us find the right answer quickly.

The Series C Hustle: We have the stability of a well-funded leader but the heart of a startup.

The Perks & Ownership

• We want our team to feel like owners because they are owners. We trust our people to manage their results and their time.
• Meaningful Equity: Every "Safestar" is a shareholder. You aren’t just an employee; you are a partner in our success.
• Unlimited Leaves: We don’t believe in clock-watching. We offer unlimited leave because we trust you to take the time you need to recharge while staying committed to the mission.
• Comprehensive Benefits: We provide top-tier medical insurance and wellness benefits to ensure you and your family are well cared for.
• Career Trajectory: We are growing aggressively. For high-performers, the path for advancement moves at the speed of your ambition.

What You'll Do

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• Design and develop lightweight security sensors/agents running inside customer environments.
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• Build capabilities for asset discovery, network scanning, vulnerability detection and exposure validation .
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• Develop reliable, long-running system software with a focus on performance, resource usage, concurrency, and stability .
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• Work extensively with Windows/Linux internals, processes, sockets, filesystems, networking and system APIs .
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• Build communication between distributed sensors and the SAFE cloud with secure authentication, encryption, retries and offline recovery .
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• Implement sensor lifecycle management, including installation, configuration, health monitoring and software/rule updates.
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• Debug complex issues spanning application code, operating systems, customer networks, proxies, firewalls and infrastructure .
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• Build strong diagnostics, telemetry and logging so problems can be investigated without requiring direct access to customer systems.
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• Participate in low-level and high-level design discussions and independently own well-defined components/features through production.

What We're Looking For

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• 3–6 years of software development experience , preferably building systems, infrastructure or security products.
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• Strong programming experience in one or more of C++, Go or Python .
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• Strong understanding of Windows/Linux and operating-system fundamentals .
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Good understanding of networking concepts, including

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• TCP/IP and sockets
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DNS

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HTTP/HTTPS

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TLS

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Proxies

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Routing

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NAT

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• Firewalls and network segmentation
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• Experience with multithreading/concurrency, asynchronous programming and inter-process communication .
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• Understanding of software security and secure communication practices.
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• Ability to troubleshoot issues independently across code, OS and network boundaries .

Strongly Preferred

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• Experience building endpoint agents, sensors, collectors, daemons or system services .
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• Experience working on cybersecurity, endpoint security, vulnerability management, micro-segmentation, EDR or network security products .
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• Experience building software deployed across large heterogeneous enterprise environments .
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• Familiarity with CVE, CVSS, vulnerability scanners and exposure management .
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• Experience with secure auto-update / software distribution mechanisms .
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• Familiarity with containers and technologies such as Docker and Kubernetes .
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• Experience developing software that needs to operate reliably across Windows and Linux environments .

What Good Looks Like

You should be comfortable going beyond

• "The API returned an error."
• and investigating: Sensor → process → socket → DNS → proxy/firewall → network → cloud service to determine exactly where and why something failed.

You should be equally comfortable reasoning about

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• Why is a process consuming excessive CPU or memory
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• Why communication works in one customer network but fails in another
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• How to safely upgrade thousands of deployed sensors
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• How to recover when a sensor loses connectivity for several hours
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• How to execute security scans without destabilising customer infrastructure
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• How to collect enough diagnostics to troubleshoot systems you cannot directly access
• The ideal candidate is fundamentally a systems/security engineer who can build reliable software , rather than a conventional CRUD/backend application developer.