דרושים » הנדסה » Staff Software Engineer - Linux/Kernel

Were looking for a senior engineer with strong systems-level thinking and a good understanding of Linux. You should be comfortable working close to the kernel, ideally with experience in eBPF, or with a strong desire to dive into it. Proficiency in C/C++/ Go is essential, and familiarity with networking protocols, TLS internals, or distributed tracing is a strong advantage.
Youll join a high-impact team tackling ambitious technical challenges-like decoding traffic across multiple protocols, and ensuring high-fidelity metrics in complex, real-world environments. Youll be expected to lead design and implementation efforts, contribute to roadmap planning, and collaborate across teams to ensure our solution remains robust, scalable, and frictionless for our users.
This role is a great fit for engineers who thrive on low-level, performance-sensitive problems, and want to shape the future of observability through cutting-edge kernel technology.

in this role, you will play a critical part in advancing cumulus Linux, a leading networking operating system and a cornerstone of the ai factory - the next-generation data center designed to power the training, fine-tuning, and deployment of ai models at scale. you will work closely with cumulus Linux design and architecture teams while gaining deep insights into nvidias products and technologies.
what youll be doing:
manage, mentor, and guide a team of software developers.
oversee the design, implementation, and maintenance of scalable automation frameworks, while remaining hands-on with software development and debugging.
drive timely, high-quality feature delivery.
collaborate with global, cross-functional teams to identify, track, and resolve issues.
analyze customer-reported issues, identify TEST gaps, and ensure robust regression coverage.
work with continuous integration systems and regression tools.
foster a culture of innovation, quality, ownership, and accountability.
support team members with career development plans and achievable growth goals.

Were looking for experienced backend engineers who want to take ownership of critical services and deepen their expertise in distributed systems. Whether you've built APIs, pipelines, or backend tooling, this role is a chance to grow your impact while learning how to design and operate high-scale, high-availability systems that support observability and security products used by engineers around the world.
What Youll Do:
Design and build reliable backend services that handle high-throughput, globally distributed workloads
Own core components that power products relied on by thousands of engineering teams worldwide
Collaborate with other experienced engineers to evolve system architecture with a focus on scalability and resilience
Learn and apply distributed systems design patterns in a production setting
Ship production-grade code in languages like Go, Python, or Java
Contribute to team culture through code reviews, architecture discussions, and mentorship of peers and junior engineers

Were looking for an exceptional, driven, and technically visionary Staff Engineer to help shape the future of our platform and accelerate our mission to simplify taxes for everyone.
Youll play a central role in designing and building scalable systems and tools that enable our teams to deliver exceptional user experiences with speed and confidence.
If you're passionate about technical leadership, enjoy solving complex architectural challenges, and want to make a meaningful impact on millions of users, wed love to have you join us.
Responsibilities:
Critical, cross-functional engineering initiatives from design to development and deployment, ensuring quality and scalability.
Participate in technical decision-making and knowledge sharing across multiple teams.
Collaborate with Product, UX, and other stakeholders to deliver seamless and data-driven experiences.
Evaluate and introduce new tools, technologies, and practices that raise the bar for engineering excellence.
Guide by example - service ownership, observability, and operational best practices across the engineering organization.
Promote a culture of high standards, clean code, testing, and continuous improvement.

At our company youll be part of a global team that breaks barriers to redefine cybersecurity guided by our BRAVE core values:

Bold in how we dream and innovate

Responsive to feedback, challenges and opportunities

Accountable for results and best in class outcomes

Visionary in future focused problem-solving

Exceptional in execution and impact

we are a global leader in human- and agent-centric cybersecurity. We protect how people, data, and AI agents connect across email, cloud, and collaboration tools. Over 80 of the Fortune 100, 10,000 large enterprises, and millions of smaller organizations trust to stop threats, prevent data loss, and build resilience across their people and AI workflows. Our mission is simple safeguard the digital world and empower people to work securely and confidently. Join us in our pursuit to defend data and protect people.

How We Work
At our company youll be part of a global team that breaks barriers to redefine cybersecurity guided by our BRAVE core values

Bold in how we dream and innovate

Responsive to feedback, challenges and opportunities

Accountable for results and best in class outcomes

Visionary in future focused problem-solving

Exceptional in execution and impact

Location: Tel Aviv

The Role
Were looking for a hands-on Technical Lead / Architect to design, build, and guide the development of scalable, secure, and resilient systems. As a key member of our engineering team, youll own architectural decisions and lead the delivery of a large-scale SaaS platform that powers mission-critical experiences for our customers. Youll collaborate with seasoned engineers and product leaders to shape and implement our technology vision - spanning everything from REST APIs and distributed microservices to data pipelines and analytics infrastructure. Youll work with modern open-source tools, cloud-native frameworks, and DevOps practices to deliver solutions that scale efficiently and securely.

Your Day-to-Day

Lead the design and implementation of core backend systems and microservice architectures.

Drive technical decision-making, ensuring performance, scalability, and security-by-design.

Collaborate cross-functionally with product, DevOps, and data teams to align architecture with business goals.

Champion code quality, automation, observability, and engineering excellence.

Mentor engineers, conduct design and architecture reviews, and raise the teams technical bar.

Work closely with data scientists to integrate machine learning / AI models into the system.

Stay ahead of emerging technologies, frameworks, and cybersecurity best practices relevant to SaaS architecture.

Required xEngineer (ai-native software engineer)
makes it possible for anyone to succeed online. since 2006, weve grown to around 5,500 employees in 22 countries, launched over 40 products, and serve over 243 million users and their visitors worldwide. here, we push you to innovate, evolve in non-traditional ways, and collaborate. we operate in small teams that work closely together at a high level.
although were already industry leaders in web creation and business, our work is nowhere near done. our goal is to become the main engine of the internet so we can create a more open web for all.
we're proud to be an equal opportunity employer. the company was built around the idea that everyone has the right to be successful, online. this same vision defines us as an employer: creating a work environment where everyone is welcome, and anyone has the right to succeed.
as an xEngineer, youll combine deep technical expertise with system -level thinking and product ownership, applying ai across the development lifecycle to build impactful systems, make thoughtful architectural decisions, and drive technical excellence from idea to production. in your day-to-day, you will:
design and own end-to-end systems and features that serve millions of users, taking responsibility across stack boundaries - from product flows and User Experience to apis, data models, and production systems
apply ai-powered tools and workflows across planning, design, implementation, testing, debugging, and refactoring
work with modern technologies and platforms (e.g., typescript, React, Node.js, JAVA, cloud, and ci/cd), continuously evolving your toolkit with ai-powered tools
lead architectural thinking by making thoughtful trade-offs around scalability, reliability, security, performance, and maintainability
collaborate closely with product managers, designers, and engineers to shape solutions while ensuring production quality, observability, and long-term system health
at the company, we believe our best work happens together. our work model is fully in person, with 5 days a week from our office. flexibility remains a core value at the company and special requests are handled thoughtfully at the team level.
we are engineering at the company - a team of ai-native xengineers with deep expertise in frontend, backend, or mobile, who use ai support to take ownership over projects end-to-end. we work in a fast-paced, dynamic development environment with autonomous teams that never compromise high quality standards. as ai increasingly generates production code, we dedicate more and more of our time developing the skills we believe are critical for today and tomorrow: system design, architecture, scalability, reliability, and security.

We are looking for a Technical Leader to lead the technical evolution of this group as we transition toward Native AI and Agentic architectures across both product and engineering. This role reports directly to the VP of Engineering and will play a critical role in shaping how AI-first and agent-driven systems are embedded into core event pipeline.
Youll combine deep technical leadership, hands-on architecture work, and strong cross-functional influence to guide the team through this transformation - while maintaining the performance, reliability, and scale our customers depend on.

What You Will Do
Lead the technical direction of the Event Management group, owning architecture and long-term evolution
Drive the transition of core event processing systems toward Native AI and Agentic solutions, including AI-driven enrichment, correlation, decision-making, and automation
Partner closely with Product, Data, and AI teams to translate product vision into scalable, production-ready systems
Design and review high-scale, high-throughput backend systems handling millions of daily events
Mentor and grow engineers, fostering a culture of technical excellence, ownership, and pragmatic innovation
Act as a technical thought partner to engineering leadership, contributing to org-wide architectural decisions
Balance innovation with operational rigor, ensuring reliability, performance, and security throughout the transition
Contribute to a culture of technical excellence, collaboration, and continuous improvement

As a Senior/ Principal/ Senior Principal Software Engineer at Cortex Cloud, you will serve as a primary technical architect and visionary for our core communication infrastructure. This role is focused on the critical server-side backbone that facilitates high-scale bidirectional communication between our cloud services and client-side applications.
You will be responsible for the architectural integrity of systems that receive massive data inflows from the field and reliably broadcast intelligence back to millions of endpoints. This is a high-impact leadership role requiring a blend of deep technical mastery in distributed systems and the ability to influence technical strategy across the organization.
Key Responsibilities
Architectural Strategy & Vision: Define and drive the multi-year technical roadmap for our server-side communication infrastructure, ensuring the platform remains resilient and performant under extreme load.
High-Scale Communication Infrastructure: Lead the design and implementation of backend systems optimized for receiving high-scale data from client-side apps and distributing data back to a vast ecosystem of endpoints.
Technical Leadership & Influence: Act as a force multiplier by providing technical guidance to multiple engineering teams, aligning them on shared protocols, architectural standards, and communication patterns.
Drive Engineering Excellence: Champion a culture of high engineering rigor, focusing on deep observability, low-latency data distribution, and runtime stability for mission-critical production environments.
Cross-Functional Collaboration: Partner with Product Management, Infrastructure, and Client-Side Engineering teams to evaluate technical trade-offs, mitigate risks, and ensure seamless end-to-end data flow.
Innovation & Prototyping: Spearhead the evaluation of emerging technologies and lead "proof of concept" initiatives for next-generation transport layers and messaging paradigms.
Technical Mentorship: Invest in the growth of Senior and Staff engineers through deep-dive design reviews, code audits, and hands-on pair programming on the most critical paths.
Strategic Customer Engagement: Support the business by leading technical deep dives with strategic customers, translating complex architectural concepts into actionable confidence for our partners.

We are seeking a highly skilled developer to join the Secure Protocols Inspection group, working in complex, challenging, and high-performance Linux environments.
Job Id: 24974
The team is responsible for the design and development of security-critical products and frameworks at the core of our HTTPS/TLS inspection capabilities.
In this role, you will work on core systems responsible for the real-time processing of large volumes of encrypted network traffic in production environments. You will take part in designing, implementing, and evolving secure communication and inspection technologies, addressing performance and security challenges across modern protocols and platforms. The work spans low-level kernel and user space, as well as backend and frontend components.
The position requires deep technical ownership, close collaboration with other R&D teams, and the ability to solve complex problems in large-scale production systems.
Why Join Us?
Hybrid Work Model: Enjoy the flexibility of working from the office and from home.
Impactful Work: Play a critical role in developing security solutions that protect organizations and individuals.
Growth Opportunities: Access to learning and development resources to advance your career.
Collaborative Environment: Work in a supportive team that values diverse perspectives and innovative ideas.
Key Responsibilities
4+ years of programming experience, at least 2 in C/C++
Develop and maintain high-performance Linux-based software.
Improve existing code for performance, security, and maintainability.
Collaborate in the design and development of next-generation security solutions.
Quickly learn and take ownership of existing projects, understanding their architecture and functionality.

We are looking for an experienced Director of Engineering to lead a large, highly technical engineering organization (50+ engineers) responsible for end-to-end development of our companys platform.
This role combines people leadership, technical vision, and product partnership. You will own the full lifecycle of multiple enterprise-grade services.
You will be a key partner to Product Management, driving technology strategy, shaping product vision, and building scalable, resilient, and best-in-class security architecture at cloud scale.
Responsibilities: 
Lead and scale a 50+ engineer organization, including group managers and senior technical leaders, responsible for planning, building, and operating our companys platform
Recruit, mentor, and develop engineering managers and senior engineers, building a high-performance, inclusive, and growth-oriented culture
Own the technical vision and architecture of end-to-end security services, including:
High-throughput, low-latency runtime traffic processing
Cloud-native microservices and APIs
Web-based configuration, policy management, analytics dashboards, and alerting systems
Drive enterprise-grade architecture for large-scale, multi-tenant SaaS systems with strict requirements for availability, performance, and security
Act as a thought leader for new technologies, security capabilities, and architectural evolution within the organization
Partner closely with Product Management to define roadmaps, influence product strategy, and translate business needs into technical execution
Collaborate across engineering, operations, automation, and support teams to deliver integrated, reliable solutions at scale
Establish and own a strong quality culture, including engineering best practices, testing strategy, production readiness, and continuous improvement to ensure enterprise-grade reliability, security, and customer trust
Own delivery and operational excellence: quality, scalability, observability, and continuous improvement in production
Participate in the broader engineering leadership team, contributing to cross-company initiatives and long-term strategy Foster a culture of ownership, transparency, technical excellence, and continuous learning.