Software Development Engineer - Security (Remote Working)

Sophos is a cybersecurity leader defending 600,000 organizations globally with an AI-driven platform and expert-led services. Sophos meets organizations wherever they are in their security maturity and grows with them to defeat cyberattacks. Its solutions combine machine learning, automation, and real-time threat intelligence with frontline human expertise from Sophos X-Ops to deliver advanced, 24/7 threat monitoring, detection, and response.

Sophos offers industry-leading managed detection and response (MDR) alongside a comprehensive portfolio of cybersecurity technologies — including endpoint, network, email, and cloud security, extended detection and response (XDR), identity threat detection and response (ITDR), and next-gen SIEM. Together with expert advisory services, these capabilities help organizations proactively reduce risk and respond faster, with the visibility and scalability needed to stay ahead of evolving threats.

Sophos goes to market with a global partner ecosystem, including Managed Service Providers (MSPs), Managed Security Service Providers (MSSPs), resellers and distributors, marketplace integrations, and cyber risk partners, giving organizations the flexibility to choose trusted relationships when securing their business. We are seeking a Software Engineer to join our Security features team and help build the systems that make that mission possible.
You’ll own the delivery of project work end-to-end — from understanding requirements, through design, implementation, testing, and deployment — and you’ll be responsible for the full lifecycle of the code you ship, including production support and continuous improvement.
You’ll partner with senior engineers on more complex problems, mentor more junior teammates, serve as an on-call first responder for the services your team owns, and help raise the bar on quality and developer experience across the team.
We value curiosity, flexibility, and creative problem solving, and we’re committed to helping engineers continue to grow into senior technical leaders.
Design, develop, ship, and maintain features end-to-end in TypeScript across React frontends and backend services, with guidance from senior engineers on more complex initiatives.
Own delivery of project-level work with moderate guidance — from breakdown and design through implementation, testing, deployment, and post-release iteration.
Design and implement APIs that query, aggregate, and serve data reliably at scale.
Serve as an on-call first responder for the services your team owns; Create test plans for the features you build and contribute to automated testing (unit, integration, end-to-end) to enable safe, frequent releases.
Conduct peer reviews of code, designs, test plans, and documentation, providing constructive feedback that raises team quality and adheres to engineering standards.
Improve the developer experience by enhancing tooling, test coverage, and code structure (shift-left).
Use modern AI coding tools to accelerate delivery while continuing to build the deep engineering foundations needed to grow into a senior engineer.
Collaborate with Product Managers, UI designers, Cyber Analysts, and other engineers to deliver meaningful security outcomes for our customers.
3+ years of professional software engineering experience shipping production systems (or equivalent demonstrable experience).

• Proficiency in TypeScript or JavaScript and a modern frontend framework (React preferred).
• Experience designing and building backend services and REST or GraphQL APIs.
• Solid grounding in computer science fundamentals: data structures, algorithms, software design, and debugging.
• Experience with relational and/or NoSQL databases, including basic schema design and query work.
• Experience writing automated tests (unit, integration, end-to-end) and giving high-signal code reviews.
• Track record of consistently delivering on time and to agreed quality.
• BSc in Computer Science or a related numerate discipline, or equivalent practical experience.

Experience with cloud platforms (AWS preferred) and Infrastructure as Code (Terraform, CDK).
Familiarity with CI/CD pipelines and modern delivery practices.
Exposure to event-driven, distributed, or large-scale data systems.
Interest or experience in cybersecurity.
Experience using AI-assisted developer tools to improve productivity and learning velocity.
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.

• li-remote
• Sophos operates a remote-first working model, making remote work the primary option for most employees. While we are a remote first organization, applicants must have legal authorization to work in the jurisdiction where the position is posted, without requiring employer sponsorship.

• 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
• Monthly wellbeing webinars and training to support employee health and wellbeing

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. Data Protection
If 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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