Microsoft Security Engineer

Microsoft Security Engineer

Application Deadline: 22 March 2026

Department: InfoSec & Compliance

Employment Type: Full Time

Location: Coventry

Reporting To: Information Security Manager

Description

Why this opportunity at Calligo?

Connect with colleagues globally
Working closely with colleagues across the UK, Europe and North America we have vibrant, modern office spaces all over the world!

Supportive and dynamic team
We know how hard our employees work and that our success comes from our people - a safe and supportive culture and employee wellbeing are at the heart of what we do. You'll be joining our award winning team and your primary responsibility will be for the design, development, and delivery of security services and solutions built on the Microsoft security stack.

This role bridges security operations, engineering, and customer delivery, with a strong focus on Microsoft 365, Azure, and cloud native security capabilities. You will play a key role in evolving Calligo's managed and advisory security services, supporting customer implementations, and ensuring Microsoft security technologies are deployed and operated in line with best practice.

Interested? The role would be well suited to an individual with the ability to combine deep technical expertise with a service led mindset, helping customers improve security maturity while strengthening Calligo's internal capabilities.

Note this is a hybrid role working from either our Coventry or Leicester office.

Key Responsibilities Microsoft Security Engineering & Service Development

• Design, implement, and optimise security solutions using the Microsoft security stack, including Microsoft 365 and Azure security capabilities.
• Contribute to the development and standardisation of Calligo's Microsoft based managed security and advisory services.
• Create and maintain reference architectures, technical standards, and deployment patterns aligned to Zero Trust and defence in depth principles.
• Evaluate new Microsoft security features and services, supporting their introduction into Calligo's service catalogue where appropriate.

Security Operations & Integration

• Support the integration of Microsoft security tooling into Calligo's wider security operations, including alerting, investigation, and response workflows.
• Develop and tune detection logic, policies, and configurations to improve signal quality and reduce noise.
• Act as a technical escalation point for Microsoft related security issues and incidents within the SecOps team.
• Collaborate with partners and internal teams to ensure effective ingestion and use of Microsoft security telemetry.

Customer Delivery & Advisory Support

• Lead or support customer facing security engagements involving Microsoft security technologies, including assessments, deployments, and service onboarding.
• Provide technical input into customer security roadmaps, helping translate business and risk requirements into practical Microsoft aligned solutions.
• Work alongside account teams, vCISO, and advisory leads to support pre sales activity and solution design where required.
• Produce clear technical documentation and handover materials for both customers and internal operational teams.

Automation, Improvement & Best Practice

• Leverage automation and scripting to improve the deployment, configuration, and ongoing operation of Microsoft security services.
• Continuously review and improve existing configurations and service delivery approaches to align with Microsoft and industry best practices.
• Support continuous improvement initiatives across SecOps, Managed Services, and Cloud Operations.

Internal Security & Compliance

• Support the operation and improvement of Calligo's internal Microsoft security controls and monitoring.
• Assist with internal and external audit activities (e.g. ISO 27001, SOC), providing technical evidence related to Microsoft security platforms.
• Ensure solutions and services align with Calligo's security policies, risk appetite, and compliance obligations.

Skills, Knowledge and Expertise Experience

• Minimum 3 years' experience in a security engineering, cloud security, or senior security operations role.
• Demonstrable experience designing and implementing security controls within Microsoft 365 and/or Azure environments.
• Experience supporting or delivering security services in a managed services or consulting context is desirable.

Technical Knowledge

• Strong hands on knowledge of Microsoft security technologies, such as Microsoft Defender (Endpoint, Identity, Office 365, Cloud), Microsoft Sentinel, Microsoft Entra ID (identity protection, conditional access) & Microsoft Purview.
• Solid understanding of cloud security concepts, identity and access management, endpoint security, and threat detection.
• Experience integrating security tools with SIEM, SOC, or MDR services.
• Practical scripting or automation experience (e.g. PowerShell) to support security operations and deployments.
• Good working knowledge of Windows environments and Azure infrastructure.

Certifications

• Microsoft security certifications such as SC 200, SC 300, AZ 500 (or equivalent) are highly desirable.
• Broader industry certifications (e.g. CISSP, CCSP) are beneficial but not essential.

Benefits

• Training and development for career growth
• 25 Days annual leave, increasing with length of service
• 5% employer pension contribution, minimum 3% employee contribution
• Healthcare cover
• Life insurance
• Flexible working
• Paid time off for volunteering
• Enhanced maternity & paternity pay