Principal Observability & Performance Engineer

Principal Observability & Performance Engineer - £1000 Per Day – 6 Months – London (Hybrid) – Investment Banking   Overview: A global investment banking organization are searching for an experienced Observability and Performance engineer to work within low latency/ high frequency environments on a market data project.   Role & Responsibilities: Build and maintain the application components that aggregate, correlate, and present observability data from individual services into unified, end-to-end views of the Real-Time platform. Implement customer-centric aggregation and hotspot detection algorithms that reflect timeliness, completeness, accuracy, and stability of market data across the Real-Time estate Develop and extend telemetry pipelines that ingest, transform, and route metrics, traces, and logs from distributed services into a coherent observability layer Design and build custom synthetic monitoring agents deployed across hundreds of global sites to continuously measure customer experience of Real-Time data from the edge Work with squads to integrate observability instrumentation into applications throughout Dev, Test, PPE, and Prod environments.Technical Requirements: Hands-on software engineering experience building observability or data-pipeline applications metrics aggregation, distributed tracing, or real-time streaming. Proficiency in at least one systems-level language (C++, Go, or Rust) and one scripting/application language (Python, Java, or TypeScript) Experience with OpenTelemetry SKs, collectors, and schema conventions for instrumentation and telemetry export. Familiarity with SLI/SLO concepts, especially for latency-sensitive or market data systems. Experience building and operating custom synthetic monitoring solutions at scale, including lightweight agents distributed across geographically diverse sites. Skilled in cloud-native, containerised, and Kubernetes environments including deploying and operating services at scale.Rate & Duration: £1000 Per Day (Inside) 6 Months (Rolling contract due to run for several years) London (Hybrid)  Principal Observability & Performance Engineer - £1000 Per Day – 6 Months – London (Hybrid) – Investment Banking