Software Development Engineer II – Sensors / Systems & Security Engineering

Job description

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.

Role Overview:

We are looking for an SDE II – Sensors to build customer-deployed security software that runs inside enterprise environments and continuously discovers assets, evaluates exposures, and securely communicates telemetry back to SAFE. This role is suited for engineers with strong C++, Go or Python programming skills, Windows/Linux, networking, and cybersecurity fundamentals , particularly those who have worked on endpoint agents, security sensors, network/security products, or other long-running system software .

What You'll Do:

- 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.

What We're Looking For:

- 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 .

Strongly Preferred:

- 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 .

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:

- 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.

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! 🚀