We are looking for a Principal Software Engineer to provide hands-on technical leadership for the Central Platform Group. You will lead the architecture, design, and delivery of customer-facing capabilities spanning user interfaces, backend services, APIs, and shared cloud platforms.
You will also help build secure, reliable AI experiences that connect customers with assistants and agents across Sophos products. This is a senior individual-contributor role with responsibility for production code, cross-team architecture, engineering quality, and technical direction.
AI-driven engineering is a core expectation for this role. You will use AI coding agents as part of day-to-day software development and help establish effective agentic workflows that improve delivery speed and quality while preserving security, human review, and engineering accountability.
Team Summary
What you will do
Lead the architecture, design, and delivery of end-to-end customer-facing features across web UI, backend services, APIs, and integrations.
Write production code, build prototypes, review designs and code, and remain directly involved in solving the most complex engineering problems.
Evolve shared frontend and backend platform capabilities so product teams can deliver consistent, accessible, and maintainable customer experiences.
Define clear service boundaries, APIs, data contracts, integration patterns, and versioning strategies for capabilities used across multiple Sophos products.
Design cloud-native, multi-tenant systems for security, scalability, availability, performance, resilience, and cost efficiency.
Apply secure-by-design principles to authentication, authorization, role-based access, tenant isolation, privacy, auditability, and customer-data handling.
Build a consistent and secure experience for customers to discover and interact with AI assistants and agents across Sophos products.
Develop reusable AI platform capabilities for request routing, context management, tool integration, orchestration, access control, and human oversight.
Establish practical approaches for AI evaluation, guardrails, regression testing, observability, latency, cost management, and safe failure behavior.
Use AI coding agents throughout the software development lifecycle for codebase exploration, design, implementation, refactoring, test generation, debugging, code review, and documentation; rigorously validate agent-generated changes before release.
Establish repeatable agentic development practices for task decomposition, context management, human review, automated verification, and the safe use of coding agents across engineering teams.
Translate product goals and ambiguous technical problems into architectural direction and incremental delivery plans.
Mentor engineers, raise engineering standards, and build alignment across product, UX, security, applied AI, and platform teams.
What you will bring
- 12+ years of software development experience, currently operating at Principal, Staff, Architect, or equivalent level.
- Hands-on experience building production AI applications or agentic workflows - not only prototypes.
- Strong proficiency using AI coding agents across design, implementation, testing, debugging, code review, and documentation.
- Strong architecture and system-design experience for large-scale, customer-facing SaaS products.
- Hands-on backend development with Go and/or Java and frontend development with Angular and/or React.
- Experience designing, deploying, and operating secure microservices and APIs on AWS.
- Demonstrated technical leadership, including driving design decisions, solving complex production problems, and mentoring engineers.
- Cybersecurity domain experience is desirable but not mandatory.
Skills Required
- 12+ years of software development experience, operating at Principal, Staff, Architect, or equivalent level
- Production experience building AI applications or agentic workflows
- Strong proficiency using AI coding agents for software development lifecycle activities
- Architecture and system-design experience for large-scale, customer-facing SaaS products
- Hands-on backend development with Go and/or Java
- Frontend development experience with Angular and/or React
- Experience designing, deploying, and operating secure microservices and APIs on AWS
- Technical leadership experience driving design decisions, solving complex production problems, and mentoring engineers
- Cybersecurity domain experience
Sophos Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Sophos and has not been reviewed or approved by Sophos.
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Leave & Time Off Breadth — Time away is positioned as broad, with company-wide wellness days plus dedicated learning days and paid volunteer time.
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Parental & Family Support — Family-related leave appears more comprehensive than baseline offerings, including paid parental leave, caregiver leave, and extended bereavement leave.
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Wellbeing & Lifestyle Benefits — Wellbeing support is emphasized through always-available assistance resources and a Calm subscription, suggesting a lifestyle-oriented benefits approach.
Sophos Insights
What We Do
Cybersecurity Evolved. As a worldwide leader in next-generation cybersecurity, Sophos protects nearly 400,000 organizations of all sizes in more than 150 countries from today’s most advanced cyberthreats. Powered by SophosLabs – a global threat intelligence and data science team – Sophos’ cloud-native and AI-enhanced solutions secure endpoints (laptops, servers and mobile devices) and networks against evolving cybercriminal tactics and techniques, including automated and active-adversary breaches, ransomware, malware, exploits, data exfiltration, phishing, and more.
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