Senior Software Engineer, Sophos

C, Linux


Senior level
Remote in Canada


Open for applications



1001+ employees

B2BArtificial IntelligenceSecurityDeep TechMachine LearningSaaSCyber SecurityAutomation

Open for applications


Senior level
Remote in Canada

1001+ employees

B2BArtificial IntelligenceSecurityDeep TechMachine LearningSaaSCyber SecurityAutomation

Company mission

To develop powerful and intuitive products and services that provide the world's most effective cybersecurity for organizations of any size.


Who you are

  • Very strong C programming skills a must
  • Team Player with can do attitude/initiative
  • Passion for software engineering and coding with proven ability to test/debug own code
  • Experience with Agile Software Development methodologies
  • Ability to work well with team of senior and junior engineers in a dynamic, fast paced environment
  • Background and understanding of firewalls, proxy, IPS/IDS, web content filtering, AV scanning
  • Knowledge of Linux system-level programming and operating system internals
  • Experience in Linux multi-process and multi-threaded user space and/or kernel programming on x86
  • Knowledge 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 advantage
  • Ability to make appropriate design choices to maximize performance and scalability system requirements
  • Automation of test code. Scripting skills with Bash, Python, and/or Java


  • Linux user space packet delivery technologies, DPDK, netmap, xdp, etc
  • Internals of Linux Kernel core networking stack, Netfilter, and/or netdev drivers
  • Snort and/or other IPS/IDS packet processing technologies
  • SSL, IPSec and cryptography knowledge
  • Kubernetes
  • Docker

What the job involves

  • 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
  • Design and develop products or systems in line with asset technical strategy, specified project ,
  • Timescales, quality and functionality requirements as agreed with the Product management
  • Define and support appropriate Unit, System and Integration testing on own code and others across the product or system, fixing errors and entering defects into the defect tracking system, highlighting potential implications on other products or systems
  • Conduct and participate in peer reviews of 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 activities and schedule your own time to deliver against agreed objectives
  • Review requirements specifications for coverage, identify areas that require further clarification, and suggest alternative approaches to Product Management, in line with business needs
  • Propose, promote, and drive the 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

Otta's take

Sam Franklin headshot

Sam Franklin

CEO of Otta

Due to the fast-evolving nature of cybercrime, companies can struggle to keep their security up-to-date and resilient. Sophos provides managed cybersecurity services to identify and resolve cyberthreats within all sizes of organisations, combining cutting edge cybersecurity tech with expert support teams.

Leveraging AI and machine learning, Sophos' system automates the detection and blocking of over 99% of threats, meaning its analysts only have to hunt down and stop the most sophisticated attackers. As well as its Managed Detection and Response (MDR) product - which, serving over 15,000 customers, is the most-used on the market - the company also delivers Incident Response Services for those experiencing an active threat.

Sophos is not a new player in the cybersecurity space, but has demonstrated its dedication to innovation with continued product launches, updates, and acquisitions such as that of BAE spinout SOC.OS that have kept its tech at the front of the market. Alongside many of its peers, the effects of the economic climate have caused Sophos to cut staff as it focusses on achieving “the optimal balance of growth and profitability", but this recent hiccup does not take away from its position as a market leader continuously leading adaption in the space.


Few candidates hear
back within 2 weeks

36% female employees

-6% employee growth in 12 months


Funding (1 round)

Jul 2020



Total funding: $2.6m

Company benefits

  • Remote-first working model & hybrid options
  • We encourage teams to get together in person periodically to help facilitate teamwork
  • Flexible start and end times for many roles
  • Leadership development program
  • Access to LinkedIn Learning
  • Global internal coaching program (Coach Match)
  • Periodic Sophos wellness days off for all Sophos to help employees relax and recharge
  • Global wellbeing program, which offers a range of wellbeing resources, including Sophos Wellbeing Webinars, Stress Management Toolkits, and Developing Resilience Courses
  • Free Employee Assistance Program (EAP) for confidential advice and counseling on a wide range of work and personal issues
  • Free annual subscription to the Calm app
  • Paid parental leave, caregiver leave & bereavement/compassion leave available
  • We host some unforgettable social experiences for our global teams including our music festival SOPH-Fest, go-karting, Sophmudder, and incredible holiday parties!
  • Our annual global fitness challenge, SOPH-Fit, sees thousands of employees taking part in our virtual global race around the world
  • Each quarter, we celebrate our exceptional global team by running the Sophos Values Awards, which recognizes and rewards employees who embody the Sophos values and who we are as a company
  • Health care benefits available worldwide

Company values

  • Simplicity: We strive to embrace design, automation, and re-engineering across our products and business operations. We aim to create instinctive next-gen products that provide IT professionals with exactly what they need to do their jobs efficiently and effectively.
  • Empowerment: We support and enable people to do great work. We trust people to take ownership, to take smart risks, and to deliver results. We encourage people to take action, to seek knowledge, and to question actions inconsistent with our mission, values, or principles.
  • Passion: We care intensely about our success and our impact. We maintain high standards and continuously strive to improve. We inspire others.
  • Innovation: We stay at the forefront and advance the boundaries of what is possible. If we fail, we do it quickly, learn, share the lessons learned, and move forward. We always seek better approaches to what we do.
  • Authenticity: We are genuine, transparent, and honest. We admit our mistakes and strive to remain self-aware. We say what we think, even if it might be difficult.

Company HQ

Abingdon, UK



Kris Hagerman

(CEO, not founder)

Former CEO of Corel Corporation, who previously served as Group President of Data Center Management at Symantec. Was also Executive VP and GM of Storage and Server Management at Veritas Software, as well as CEO and Founder of both Bigbook and Affinia.

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