Today's threatscape is relentless. So are we. At Cyderes, we build practical Identity & Access Management (IAM), Exposure Management, and risk programs, helping organizations stop active threats fast with Managed Detection & Response (MDR) that integrates with existing tools. Powering it all is Meridian, our entity fabric that connects identities, assets, and access into one trusted reality. Augmented by AI and driven by experienced operators, our tireless global team arms organizations with the people, platforms, and perspectives they need to conquer whatever tomorrow throws their way.
About the Job:
The Senior Security Engineer – Microsoft Sentinel & Defender XDR is a senior technical authority within Cyderes' Managed Sentinel SIEM and MDR services. You will manage and contribute in advancing detection, platform reliability, and security automation for managed clients.
Beyond daily platform operations, the Senior Security Engineer leads advanced detection engineering, Create optimization and standardisation efforts, and serve as an escalation point for complex ingestion, telemetry, and investigation challenges. This role partners with MDR, SOC, architecture, and customer team members to ensure Microsoft Sentinel and Defender XDR implementations are, cost-effective, and in consideration of
real-world threat activity.
As a trusted technical advisor, you influence platform strategy, mentor junior engineers, and help shape service evolution by identifying gaps, improving alert fidelity, and ensuring scalable automation. You will represent the Cyderes brand through technical leadership, and delivery excellence that meets client expectations.
You will be reporting to Senior Manager, Managed Platforms.
Responsibilities:
- Directly manage Director, Sr. Manager, and Manager-level team members supporting IT security-based engineers assisting clients in the delivery of Managed Security Services.
- Oversee Project Management Office activity associated with leading Managed and Consulting Service-related projects.
- Lead all SIEM and EDR management support activities contained within Cyderes' service portfolio.
- Enhance all onboarding, and SIEM and EDR operational procedures, to optimize support models as needed improving operations efficiency.
- Develop support of SIEM and EDR 3rd party launched features and functionality as it becomes available to Cyderes' client base.
- Stay up-to-date with latest technologies and industry trends, and recommend new technologies to improve delivery of the services that the team members provide.
- Collaborate with our internal teams to define Cyderes' technical strategy.
- Build operational measures that provide visibility into the performance levels of all operational team members.
- Get directly involved in resolving any and all client escalations as required.
- Act as an escalation point, 24x7, for any significant onboarding and operational and client issues that may occur.
Requirements:
- Bachelor's degree in computer science, Engineering, or a related field
- At least ten years of experience in engineering, to include managing multiple organizations.
- Experience with SIEM technology such as Crowdstrike Next Gen, Splunk, Microsoft Sentinel, and Google Chronicle
- Familiarity with EDR technology such as Crowdstrike Falcon, Microsoft Defender, and Sentinel One
- Experience in supporting client service onboarding activity.
- Experience in leading organizations within a Professional Service practice.
- Experience leading a global team of experienced engineers and managers.
- Experience in supporting client service delivery directly to include engagement with senior-level C-suite officers.
- Convey complex technical concepts to both technical and non‑technical team members.
- Experience working in a fast‑paced environment.
WHY CYDERES?
Benefits that go beyond the basics, we support our people so they can do their best work.
✔ Medical Insurance - Employee + dependents covered
✔ Life Insurance - Protection for what matters most
✔ Retirement Match Program - We invest in your future
✔ Hybrid Work Model - 2–3 days in office
✔ Maternity & Paternity Leave - Time for the moments that matter
✔ Paid Time Off - PTO + sick & casual leave
✔ Bereavement & Volunteer Time - Give back to your community
✔ Professional Development - Reimbursement program
✔ LinkedIn L&D Platform - Thousands of courses at your fingertips
✔ Mobile Phone Reimbursement - Stay connected, on us
Skills Required
- Bachelor's degree in Computer Science, Cybersecurity, Information Technology, or a related field, or equivalent experience
- 5+ years of experience in Security Operations, SOC, or Security Engineering roles
- At least 3 years of hands-on experience with Microsoft Sentinel
- Expertise in Microsoft Defender XDR and its security solutions
- Experience working in MSSP, MDR, or customer-facing security environments
- Experience supporting multi-tenant environments using Azure Lighthouse
- Proficiency in KQL, detection engineering, and threat hunting
- Hands-on experience with Azure Logic Apps, REST APIs, and PowerShell or Python scripting
- Experience with Windows and Linux logs, Entra ID, networking fundamentals, and authentication technologies
- Experience with the MITRE ATT&CK framework and SOC operational processes
- Ability to translate security telemetry into relevant detections and response workflows
- Experience in troubleshooting, documentation, and partner management
- SC-200, AZ-500, SC-100, CompTIA Security+, or Microsoft Defender certifications
What We Do
Cyderes is a global cybersecurity partner built for today’s relentless threatscape. We specialize in identity-centric security, managed detection and response, and cloud defense—powered by AI and driven by expert operators. Our mission: arm organizations with the people, platforms, and perspective to "be everyday ready.”
