Senior Observability Engineer

About the job Senior Observability Engineer | Financial Services Consulting | Platform Engineering & Observability | London (Hybrid)

📌 Proven hands-on production experience building and scaling enterprise observability stacks using Grafana, Prometheus, and OpenSearch.

💷 Competitive Day Rate (Contract - Inside IR35) + 6-12 Month Initial Duration.

🏠 London - Hybrid (1 to 2 days per week on-site in Central London).

👥 Platform Engineering Practice delivering a unified enterprise observability capability from the ground up.

🏢 Global Financial Services Consultancy embedded on-site with a prominent UK merchant banking group.

💻 Grafana, Prometheus, OpenSearch, Microsoft Azure, Kubernetes (AKS), Microsoft Entra ID, GitLab CI/CD, OpenTelemetry.

A global technology consultancy is partnering with a prominent UK merchant banking group to consolidate fragmented monitoring tools into a unified enterprise observability platform. They need a pragmatic, hands-on Senior Observability Engineer to take an agreed strategy and build this capability end-to-end, from core stack configuration through to application onboarding.

This is a Contract (Inside IR35) opportunity for an initial 6 to 12 months with strong potential for extension.

As the successful candidate, you will:

• Observability Stack Engineering: Build, configure, and scale a modern enterprise observability platform leveraging Grafana, Prometheus, and OpenSearch across cloud and hybrid estates.
• Telemetry & Security Integration: Implement centralised log aggregation, metrics collection, and intelligent alerting while integrating CI/CD deployment events and vulnerability scan telemetry into unified views.
• Enterprise Data & Identity Governance: Correlate CMDB metadata such as ownership and RTO/RPO tiers into operational dashboards while configuring SSO and RBAC via Microsoft Entra ID.
• Application Onboarding & Golden Paths: Establish foundational platform patterns, onboard priority banking applications, and create reusable instrumentation templates for enterprise-wide adoption.

Candidate Requirements

Required

• Observability Stack Mastery: Deep, hands-on engineering experience configuring, scaling, and managing Grafana, Prometheus, and OpenSearch (or Elasticsearch) in production.
• Cloud & Kubernetes Operations: Proven experience deploying and operating observability tooling across Kubernetes (AKS) and public cloud environments, ideally Microsoft Azure.
• Data Correlation & DevSecOps: Practical experience normalising multi-stream telemetry, integrating CMDB data, and surfacing CI/CD and security scan metrics in outcome-driven dashboards.
• Identity & Access Management: Hands-on experience configuring Single Sign-On (SSO), RBAC, and identity governance using Microsoft Entra ID.
• Eligibility & Availability: Must hold full UK right to work and be available to work on-site in London 1 to 2 days per week on an Inside IR35 basis.

Nice to Have / Ideal

• Financial Services Consulting: Prior consulting or technical delivery experience within UK banking, financial services, or similarly regulated environments.
• Modern Instrumentation & Pipelines: Hands-on familiarity with OpenTelemetry standards, automated instrumentation patterns, and integrating GitLab CI/CD telemetry.

An exceptional opportunity to build a greenfield enterprise observability platform for a leading UK banking institution.