Sr. Software C Developer- Cybersecurity Hardware

About UsSophos is a global leader and innovator of advanced security solutions for defeating cyberattacks. The company acquired Secureworks in February 2025, bringing together two pioneers that have redefined the cybersecurity industry with their innovative, native AI-optimized services, technologies and products. Sophos is now the largest pure-play Managed Detection and Response (MDR) provider, supporting more than 28,000 organizations. In addition to MDR and other services, Sophos’ complete portfolio includes industry-leading endpoint, network, email, and cloud security that interoperate and adapt to defend through the Sophos Central platform. Secureworks provides the innovative, market-leading Taegis XDR/MDR, identity threat detection and response (ITDR), next-gen SIEM capabilities, managed risk, and a comprehensive set of advisory services. Sophos sells all these solutions through reseller partners, Managed Service Providers (MSPs) and Managed Security Service Providers (MSSPs) worldwide, defending more than 600,000 organizations worldwide from phishing, ransomware, data theft, other every day and state-sponsored cybercrimes. The solutions are powered by historical and real-time threat intelligence from Sophos X-Ops and the newly added Counter Threat Unit (CTU). Sophos is headquartered in Oxford, U.K. More information is available at www.sophos.com.Role Summary:We are looking for software engineers with backgrounds in network security to join our Network Security Group Xstream Firewall Hardware/Cloud Platform Team. Put your programming and security background skills to use in building world-class performant and effective firewall products. What You Will Do Design and develop products or systemsin line withasset technical strategy, specified project , Timescales, quality and functionality requirements as agreed with the Product management.Define and supportappropriateUnit, System and Integration testingon own code and others across the product or system, fixing errors and entering defects into the defect tracking system,highlighting potential implicationson other products or systems.Conduct and participate in peer reviewsof code, designs and specifications as requested by Development Lead or Manager.Coordinate with cross functional teams including software developers, testers, and product managers.Adhere to coding best practices and standards, policies and processes set for project.Prioritize multiple activitiesandschedule your own timeto deliver against agreed objectives.Review requirements specificationsfor coverage, identify areas that require further clarification, andsuggest alternative approachesto Product Management, in line with business needs.Propose, promote, and drivethe adoption of new design and development approaches to improve overall quality, reliability, and speed of implementation across projects or own team.Mentor more junior members of the team through pair programming and code reviews. What You Will Bring Very strong C programming skills a mustTeam Player with can do attitude/initiative.Passion for software engineering and coding with proven ability to test/debug own codeExperience with Agile Software Development methodologiesAbility to work well with team of senior and junior engineers in a dynamic, fast paced environmentBackground and understanding of firewalls, proxy, IPS/IDS, web content filtering, AV scanningKnowledge of Linux system-level programming and operating system internalsExperience in Linux multi-process and multi-threaded user space and/or kernel programming on x86Knowledge of layer 2/3/4 networking protocols, concepts. Proven experience debugging networking issues. Working experience on data plane forwarding a plus.Detailed knowledge of TCP protocol a strong advantageAbility to make appropriate design choices to maximize performance and scalability system requirementsAutomation of test code. Scripting skills with Bash, Python, and/or Java Nice to Have Linux user space packet delivery technologies, DPDK, netmap, xdp, etcInternals of Linux Kernel core networking stack, Netfilter, and/or netdev driversSnort and/or other IPS/IDS packet processing technologiesTLS, IPSec and cryptography knowledgeKubernetesDocker Additional Information In Canada, the base salary for this role ranges from $125,000 to $209,000. In addition to base salary, we offer additional compensation including bonus eligibility and a comprehensive benefits package. A candidate’s specific pay within this range will depend on a variety of factors, including job-related skills, training, location, experience, relevant education, certifications, and other business and organizational needs.#B2#LI-RemoteReady to Join Us?At Sophos, we believe in the power of diverse perspectives to fuel innovation. Research shows that candidates sometimes hesitate to apply if they don't check every box in a job description. We challenge that notion. Your unique experiences and skills might be exactly what we need to enhance our team. Don't let a checklist hold you back –we encourage you to apply.What's Great About Sophos?· Sophos operates a remote-first working model, making remote work the primary option for most employees. However, some roles may necessitate a hybrid approach. Please refer to the location details in our job postings for further information.· Our people – we innovate and create, all of which are accompanied by a great sense of fun and team spirit· Employee-led diversity and inclusion networks that build community and provide education and advocacy· Annual charity and fundraising initiatives and volunteer days for employees to support local communities· Global employee sustainability initiatives to reduce our environmental footprint· Global fitness and trivia competitions to keep our bodies and minds sharp· Global wellbeing days for employees to relax and recharge· Monthly wellbeing webinars and training to support employee health and wellbeingOur Commitment To YouWe’re proud of the diverse and inclusive environment we have at Sophos, and we’re committed to ensuring equality of opportunity. We believe that diversity, combined with excellence, builds a better Sophos, so we encourage applicants who can contribute to the diversity of our team. All applicants will be treated in a fair and equal manner and in accordance with the law regardless of gender, sex, gender reassignment, marital status, race, religion or belief, color, age, military veteran status, disability, pregnancy, maternity or sexual orientation. We want to give you every opportunity to show us your best self, so if there are any adjustments we could make to the recruitment and selection process to support you, please let us know.Data ProtectionIf you choose to explore an opportunity, and subsequently share your CV or other personal details with Sophos, these details will be held by Sophos for 12 months in accordance with our Privacy Policy and used by our recruitment team to contact you regarding this or other relevant opportunities at Sophos. If you would like Sophos to delete or update your details at any time, please follow the steps set out in the Privacy Policy describing your individual rights. For more information on Sophos’ data protection practices, please consult our Privacy Policy Cybersecurity as a Service Delivered | Sophos

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