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Senior Operations Reliability Engineer – Messaging Platforms
Location: UK
Level: P3 – Career (Professional Track)
Overview
As a Senior Operations Reliability Engineer specializing in Messaging Platforms, you will play a key role in maintaining and improving the reliability, security, and operational maturity of enterprise messaging services.
This role focuses on Microsoft Exchange Online, Exchange On-Premises, and Mimecast, with responsibility for incident resolution, platform stability, observability improvements, and automation validation. Operating as part of the Reliability Operations function, you will help transition messaging services from reactive support to proactive, automation-aware reliability practices.
In addition to hands-on troubleshooting, you will contribute to AIOps tuning, alert noise reduction, workflow automation, and improved signal quality across messaging-related events and telemetry.
Responsibilities
General Reliability Operations
Resolve complex messaging-related incidents through advanced troubleshooting and cross-team coordination.
Serve as a senior escalation point for the team.
Monitor observability and AIOps platforms to detect anomalies, service degradation, and emerging risks.
Perform advanced incident triage and event correlation to identify root cause and reduce duplicate or misrouted alerts.
Validate automated remediation workflows and ensure reliability before broader production rollout.
Identify recurring operational tasks and translate them into automation or scripting opportunities.
Improve alert signal quality by tuning thresholds, suppression logic, and correlation rules.
Lead post-incident reviews, identifying systemic fixes and reliability improvements.
Ensure messaging telemetry, event data, and service mappings align with monitoring and CMDB standards.
Partner with Cloud, IAM, Security, Network, and ServiceNow teams to improve messaging reliability and governance posture.
Messaging Platform Responsibilities
Support the availability, performance, and reliability of Microsoft Exchange Online and Exchange On-Premises environments.
Troubleshoot complex mail flow, transport rules, DNS, SMTP, hybrid configuration, and authentication-related issues.
Administer and optimize Mimecast policies for spam filtering, malware protection, phishing mitigation, and data protection.
Analyze messaging logs and telemetry to detect trends, abnormal patterns, and systemic weaknesses.
Support and validate platform changes, upgrades, and configuration updates following change management practices.
Participate in resilience validation exercises, including failover, hybrid validation, and mail continuity testing.
Collaborate with Security and Compliance teams on investigations, audit support, and messaging-related security incidents.
Mentor junior engineers and provide knowledge-sharing related to messaging operations and troubleshooting patterns.
Automation & AIOps Contributions
Develop and enhance PowerShell scripts to automate repetitive messaging administration tasks.
Contribute to ServiceNow workflow improvements related to messaging incidents and requests.
Integrate messaging platform health signals and vendor advisories into AIOps and monitoring systems.
Tune alerting and anomaly detection models to reduce noise and improve actionable signal quality.
Support predictive detection efforts by refining telemetry and logging standards.
Track improvements in MTTR, alert reduction, automation coverage, and service availability.
Requirements
Bachelor’s degree in Information Technology or related field; equivalent experience considered.
5+ years of experience supporting enterprise messaging platforms.
Strong hands-on experience with Microsoft Exchange Online.
Strong experience administering or supporting Mimecast or similar email security platforms.
Strong understanding of mail flow, DNS, SMTP, authentication, and messaging security principles.
Experience with monitoring, observability, and ITSM platforms (e.g., ServiceNow).
Proficiency in PowerShell for messaging administration and automation.
Strong troubleshooting and analytical skills with the ability to interpret messaging logs and telemetry.
Effective written and verbal communication skills.
Motivation to deepen expertise in automation, AIOps, and reliability engineering practices.
Additional Information
On-Call Support: Participation in a shared, rotational on-call schedule is required.
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About Genesys:
Genesys® empowers more than 8,000 organizations worldwide to create the best customer and employee experiences. With agentic AI at its core, Genesys Cloud™ is the AI-Powered Experience Orchestration platform that connects people, systems, data and AI across the enterprise. As a result, organizations can drive customer loyalty, growth and retention while increasing operational efficiency and teamwork across human and AI workforces. To learn more, visit www.genesys.com.
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