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.

Design and develop lightweight security sensors/agents running inside customer environments.

Build capabilities for asset discovery, network scanning, vulnerability detection and exposure validation.

Develop reliable, long-running system software with a focus on performance, resource usage, concurrency, and stability.

Work extensively with Windows/Linux internals, processes, sockets, filesystems, networking and system APIs.

Build communication between distributed sensors and the SAFE cloud with secure authentication, encryption, retries and offline recovery.

Implement sensor lifecycle management, including installation, configuration, health monitoring and software/rule updates.

Debug complex issues spanning application code, operating systems, customer networks, proxies, firewalls and infrastructure.

Build strong diagnostics, telemetry and logging so problems can be investigated without requiring direct access to customer systems.

Participate in low-level and high-level design discussions and independently own well-defined components/features through production.

3–6 years of software development experience, preferably building systems, infrastructure or security products.

Strong programming experience in one or more of C++, Go or Python.

Strong understanding of Windows/Linux and operating-system fundamentals.

Good understanding of networking concepts, including:

TCP/IP and sockets

DNS

HTTP/HTTPS

TLS

Proxies

Routing

NAT

Firewalls and network segmentation

Experience with multithreading/concurrency, asynchronous programming and inter-process communication.

Understanding of software security and secure communication practices.

Ability to troubleshoot issues independently across code, OS and network boundaries.

Experience building endpoint agents, sensors, collectors, daemons or system services.

Experience working on cybersecurity, endpoint security, vulnerability management, micro-segmentation, EDR or network security products.

Experience building software deployed across large heterogeneous enterprise environments.

Familiarity with CVE, CVSS, vulnerability scanners and exposure management.

Experience with secure auto-update / software distribution mechanisms.

Familiarity with containers and technologies such as Docker and Kubernetes.

Experience developing software that needs to operate reliably across Windows and Linux environments.

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:

Why is a process consuming excessive CPU or memory

Why communication works in one customer network but fails in another

How to safely upgrade thousands of deployed sensors

How to recover when a sensor loses connectivity for several hours

How to execute security scans without destabilising customer infrastructure

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.

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