We are looking for an experienced individual to join a team that is responsible for developing our cutting-edge collection, prevention and protection technologies using both documented and undocumented proprietary kernel mode techniques.
The tam develops the core kernel technologies for a wide variety of products, from EDR to next-gen AV, including work that encompasses many aspects of kernel development, from infrastructure through filter drivers to function hooking, to name a few.
In this position you will:
Write kernel software that can reach the depths of the operating system.
Implement novel collection and protection techniques.
Write robust driver infrastructure.
Optimize for extreme performance constraints.
Research uncharted territories of the Windows kernel, drivers, APIs, and internal mechanisms.

We are looking for a senior Windows developer who is passionate about software design, code quality, and performance. The job involves writing production-grade and highly performant code that will be shipped to thousands of endpoints. The role includes developing for the Windows kernel to collect the necessary data as well as writing user-mode code for integrating the kernel driver into our sensors architecture.
The Responsibilities
Write production-grade C/C++ code to create robust and high-performance software drivers and applications for Windows.
Investigate possibly undocumented system behavior to enable product features or to resolve software issues.
Optimize code for maximum efficiency and resource utilization, ensuring the smooth operation of our solutions.
Collaborate closely with operating system internals to gather essential data for analyzing abnormal behavior on endpoints.
Participate in code reviews with an emphasis on design and code quality, ensuring the team adheres to best practices.
Work effectively within a team, contributing to a collaborative and innovative development environment.
Apply your problem-solving abilities to address complex technical challenges in the cybersecurity domains.

What Youll Do:
As an Agent Engineer on our companys Endpoint team, you will play a pivotal role in developing our endpoint agent, taking full ownership from design to production. Your work will focus on creating efficient and secure detection and prevention capabilities, implementing robust command and control processes, and ensuring top-tier performance and reliability. Key responsibilities include:
Designing and developing high-performance, resilient solutions from concept to production.
Optimizing code and leveraging new technologies to enhance system performance.
Collaborating with skilled backend engineers to implement best practices and maintain architectural excellence.
Writing clean, efficient, and well-tested code to ensure reliability and security.
Our Tech Stack:
Rust | WinAPI | Tokio | OpenAPI | Protobuf.

The eBPF APM team builds Datadogs zero-instrumentation observability platform, enabling automatic service discovery, Layer 7 protocol classification, traffic decoding, and high-fidelity RED (requests, errors, duration) metrics from both plaintext and TLS-encrypted traffic-without requiring customer code changes.

This work spans kernel-space eBPF, user-space Go services, and large-scale distributed systems, operating reliably across diverse Linux kernels, distributions, runtimes, and real-world production environments. The team tackles challenges in protocol evolution, TLS detection across languages and frameworks, and performance-critical data collection at scale.

We are looking for a Staff Engineer who will act as a technical owner and multiplier-driving architecture, influencing the roadmap, and ensuring our APM platform remains robust, scalable, and easy to adopt us and our customers grow.

What Youll Do:
Own major technical areas of the zero-instrumentation APM system, from design through long-term evolution and operational maturity.
Define and drive architecture for kernel-level traffic capture, L7 protocol decoding, and metric extraction using eBPF and Go.
Lead high-impact initiatives addressing protocol parsing, TLS visibility, kernel compatibility, and performance at scale.
Set technical direction and standards for reliability, performance, and maintainability across the team.
Partner cross-functionally with Agent, Tracing, Security, Runtime, and Product teams to align on system design and roadmap priorities.

Now were looking for a bright and passionate Senior Software Engineer to join our team. In this critical role, you will design, develop, and maintain core components of our Access Clients used by hundreds of thousands of users worldwide across Windows and Linux in both household and enterprise environments. You will help take our desktop clients to the next level of functionality and stability, developing core service/daemon functionality as well as user-facing components tailored to each OS.
Responsibilities:
Develop core components for cross-platform C++ services/daemons and applications on Windows and Linux.
Research new technologies and drive POCs that improve reliability, performance, and user experience.
Take ownership of new features and lead collaborative efforts end-to-end.
Support the entire application lifecycle across all three OSes, including release management and production support.
Collaborate with quality assurance, technical support, product management, and other engineering teams to deliver integrated features.

We are looking for a talented detection engineer, someone who looks at the world differently, who explores, hunts, lives to beat the system and challenge it. Someone who can address tough security problems and deliver solutions quickly.
What will you do?
You will be responsible for detecting the newest malware and exploits based on SentinelOnes EPP platform. The role includes an end to end responsibility for behaviour based detection capabilities, starting from reversing the samples, designing new methods to detect or prevent those, and implementing it in the product in the end. You will be developing and using internal research tools, PoCs and discovering new ways to detect/prevent exploitation attacks (EoP, drive-by attacks and more). At the end of the day, your deliveries will enhance the security of dozens of millions of Windows endpoints which are protected by our platform.

We are seeking a talented and experienced Software Development Team Leader. The candidate will have a passion for exploring new technologies and tackling complex challenges with a proactive mindset toward continuous improvement.
You will be an integral part of our highly skilled teams, designing and developing the core infrastructure of our companys leading product.
Development is primarily conducted in C and C++ within the Linux Kernel and User Mode. In this role, you will lead and manage large-scale distributed systems.
Join our global leader in securing the world!
Key Responsibilities
Lead a team that manages, designs, and implements new DPI and performance capabilities.
Take on increasing responsibilities, develop a strategic vision for the team, and take ownership of your contributions to the product.
Mentor and manage a diverse team of software engineers.
Collaborate with security experts, project managers, business units, and other teams across our company.
Provide ongoing support and enhancements to existing systems, customers, and code.

Were looking for a Software Engineer to join our Data Collection Technologies team to contribute to the design, build, and maintain Similarwebs Desktop data-collection extensions and client-side components. In this role, you will work as part of a team responsible for developing high-performance browser extensions ,desktop-level integrations and Mobile SDKs that power our data collection platform.
Why is this role so important?
As the most trusted platform for measuring online behavior, millions of people rely on Similarwebs insights daily as the ground truth for their knowledge of the digital world. Producing these insights requires large scale raw data to be ingested reliably in high scale to provide stable signals for analysis.
As a Desktop Client-Side Developer, you will own and implement core components of Similarwebs desktop & mobile data-collection technologies. Youll work hands-on to design, develop, and optimize our desktop clients and browser extensions, ensuring accurate, reliable, and high-quality data collection. Your work will directly influence the performance, stability, and integrity of the data that powers Similarwebs products and insights.

Join our companys Secure OS group, where we lead the design, development and upgrade of GAiA OS, our companys Linux-based operating system. As a member of our team, you will assimilate advanced technologies and collaborate closely with various R&D teams.
We are seeking a skilled developer who will excel in delving into Linux internals and tailoring them to meet our companys requirements.
The ideal candidate is innovative, self-motivated, and adept at quickly mastering new concepts.
If you are passionate about Linux, hardware, networking, and security, we invite you to join our dynamic team.
Key Responsibilities
Develop and integrate new features and functionalities into GAiA OS.
Address security vulnerabilities within the OS.
Adapt and integrate open-source software components into our company system.
Interact with hardware and product teams, and customers to identify and resolve OS related issues.
Implement support for new hardware in GAiA OS.

Join our companys Secure OS group, where we lead the design, development and upgrade of GAiA OS, our companys Linux-based operating system. As a member of our team, you will assimilate advanced technologies and collaborate closely with various R&D teams.
We are seeking a skilled developer who will excel in delving into Linux internals and tailoring them to meet our companys requirements.
The ideal candidate is innovative, self-motivated, and adept at quickly mastering new concepts.
If you are passionate about Linux, hardware, networking, and security, we invite you to join our dynamic team.
Key Responsibilities
Develop and integrate new features and functionalities into GAiA OS.
Address security vulnerabilities within the OS.
Adapt and integrate open-source software components into our company system.
Interact with hardware and product teams, and customers to identify and resolve OS related issues.
Implement support for new hardware in GAiA OS.