Senior Software Engineer 2 (UK)

United Kingdom Product Development 6 Software Engineering / Permanent / Remote About Us 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, Sophos9 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. RoleSummary This role sits within theCISO Advantageteam, building a product that democratises access toenterprise gradecybersecurity leadership for organisations of all sizes. As aSeniorSoftware Engineer, you will contribute to designing, developing, testing, andmaintaininghigh-qualitysoftware components. You will work closely with senior engineers, support product delivery, and continually build your technical skills while learning best practices incloud nativeengineering, security, and scalable system development.

What You Will Do

• Lead design and implementation of backend features and services that align with product strategy, security requirements, and quality standards.
• Champion AI-assisted development within the team and

researchleeding edge of best practice nd keep evolving your knowledge that you share with the team.

• Author and review technical designs/RFCs; provide clear trade 6off analyses and decision records.
• Develop clean, maintainable, and well 6tested code with

ppropriate automatedsts (unit integration contract performance).

• Improve service reliability through SLOs alerting logging tracing;

rticipateall with a blameless approach to incidents.

• Collaborate closely with Product Security SRE Support to plan releases manage risk deliver measurable customer value.
• Contribute to architecture within team scope (API boundaries data models messaging patterns failure handling).
• Drive security 6by 6design practices (threat modelling secure authZ/authN secrets management least privilege).
• Mentor engineers through code reviews pairing design walkthroughs; help raise bar on engineering practices.
• Continuously improve CI/CD pipelines developer experience testing effectiveness.
• Contribute to sprint ceremonies provide dependable estimates deliver on commitments transparency.

What You Will Bring

Essential

• Strong experience building backend services APIs modern language (TypeScript/Node.js preferred).
• Solid understanding API design (versioning idempotency) request/response lifecycles integration patterns (REST/JSON async messaging).
• Proficiency with relational databases (PostgreSQL): schema design indexing query optimization transactions safe migrations.
• Experience containers cloud-native development (Docker Kubernetes) CI/CD practices.
• Hands-on automated testing across pyramid; familiarity contract testing test data management.
• Practical knowledge secure coding authentication/authorisation secrets management.
• Ability investigate resolve production issues methodically; familiarity observability tooling (metrics logs traces).
• Clear communication cross-team collaboration mentoring skills.
• Bachelor’s degree computer science/software engineering or equivalent practical experience.

Desirable

• Deep TypeScript backend experience (type-driven development dependency injection modular architecture).
• Familiarity microservice event-driven architectures (service boundaries API gateways asynchronous workflows).
• Experience messaging (e.g., Kafka,NATS,SNS/SQS) outbox/transactional messaging patterns.
• Infrastructure-as-Code cloud platforms (e.g., Terraform,AWS/Azure/GCP) serverless components where appropriate.
• Advanced performance cost optimization services databases.
• Experience security reviews threat modelling compliance considerations.
• Experience improving developer workflows CI/CD pipelines team scale.

Ready Join Us? At Sophos,we believe power diverse perspectives fuel innovation.Research shows candidates sometimes hesitate apply if don't check every box job description.We challenge notion.Unique experiences skills might exactly need enhance team.Don't let checklist hold back encourage apply. What's Great About Sophos? · Sophos operates remote-first working model,making remote work primary option most employees.However,some roles may necessitate hybrid approach. While we are remote first organization , applicants must have legal authorization work jurisdiction where position posted , without requiring employer sponsorship . · Our people – innovate create , accompanied great sense fun team spirit · Employee-led diversity inclusion networks build community provide education advocacy · Annual charity fundraising initiatives volunteer days employees support local communities · Global employee sustainability initiatives reduce environmental footprint · Global fitness trivia competitions keep bodies minds sharp · Global wellbeing days employees relax recharge · Monthly wellbeing webinars training support employee health wellbeing Our Commitment To You We’re proud diverse inclusive environment have Sophos,and committed ensuring equality opportunity.We believe diversity , combinedwith excellence , builds better Sophos , so encourage applicants contribute diversityof team . All applicants treated fair equal manner accordance law regardless gender , sex , gender reassignment , marital status , race , religion belief , color , age , military veteran status , disability , pregnancy maternity sexual orientation . We wantto give every opportunityshow best self , so if any adjustments could make recruitment selection process support , please let know . Data Protection If choose explore opportunity,and subsequently share CV or personal detailswith Sophos , details held Sophos for 12 monthsaccordance Privacy Policyused recruitment teamcontact regarding relevant opportunities Sophos . If would like Sophosto delete update detailsat time , please follow steps set Privacy Policy describing individual rights . For information Sophos’ data protection practices , please consult Privacy Policy Cybersecurity Service Delivered | Sophos We may use artificial intelligence(AI) tools tos upport parts hiring process,such reviewing applications analyzing resumes assessing responses . These tools assist recruitment team do not replace human judgment . Final hiring decisions ultimately made humans . If would like information how data processed , please contact us.