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.

If you’re passionate about cyber risk, thrive in a fast-paced environment, and want to be part of a team that’s redefining security, we want to hear from you! 🚀