Senior Software Engineer - AI Security

Sophos

3d • Remote

About The Position

Sophos 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’re looking for a Senior Software Engineer who can own end-to-end product development — from idea to production, for our AI security team. You’ll build and ship AI-powered products (LLM-driven workflows, automation, intelligent systems) across the stack — frontend, backend.
This is a high-agency, low-process role. You won’t wait for specs. You’ll define problems, make decisions, and move fast with strong engineering judgment. Your work will directly shape how we build, scale, and accelerate software using AI.

Requirements

• Is comfortable building end-to-end products (UI, APIs, systems, deployment).
• Thinks from first principles, not just patterns or frameworks.
• Demonstrates high agency — takes ownership, drives clarity, and executes without waiting.
• Writes clean, scalable, maintainable code with strong fundamentals.
• Has experience or strong interest in AI-powered development (LLMs, agents, automation, copilots).
• Uses AI tools to accelerate development and decision-making.
• Can operate in low-structure, fast-moving environments with minimal PM/design dependency.
• Makes pragmatic trade-offs — balances speed, quality, and long-term thinking.
• Cares about shipping real products, not just building components.
• Years of experience does not matter to us, but we think most devs would need 4+ years of engineering experience across frontend + backend.

Nice To Haves

• Interest and knowledge of security is a plus.

Responsibilities

• Own end-to-end product development — from idea, research, and architecture to production.
• Build and ship AI-powered security products across frontend, backend, and APIs.
• Develop scalable, high-quality interfaces and systems that power real user workflows.
• Work with minimal specs — define problems, make decisions, and execute independently.
• Collaborate when needed, but primarily operate with lean ownership and high autonomy.
• Drive adoption and impact — iterate based on real usage, not just requirements.
• Leverage LLMs and AI tooling to accelerate development and improve team productivity.
• Continuously improve systems, code quality, and developer workflows.

Benefits

• Sophos operates a remote-first working model, making remote work the primary option for most employees. However, some roles may necessitate a hybrid approach. 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.
• 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 wellbeing

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed
• Number of Employees: 1,001-5,000 employees