Principal Observability & Performance Engineer

Salary: £? – ? per year

Requirements:

• Hands‑on software engineering experience building observability or data‑pipeline applications, including metrics aggregation, distributed tracing, or real‑time streaming
• Proficiency in at least one systems‑level language such as C++, Go, or Rust, and one scripting or application language such as Python, Java, or TypeScript
• Experience with OpenTelemetry SDKs, 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
• Experience working in cloud‑native, containerised, and Kubernetes environments, including deploying and operating services at scale

Responsibilities:

• Build and maintain application components that aggregate, correlate, and present observability data from individual services into unified, end‑to‑end views of our Real‑Time platform
• Implement customer‑centric aggregation and hotspot detection algorithms that reflect timeliness, completeness, accuracy, and stability of market data across our 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

Technologies:

• Cloud
• Java
• Kubernetes
• OpenTelemetry
• Python
• Rust
• TypeScript
• DevOps

More:

We are a global investment banking organization seeking an experienced Observability and Performance Engineer to work within low‑latency, high‑frequency environments on a market data project. This is a six‑month rolling contract based in London with a hybrid working arrangement and a day rate of £1000 inside IR35. We operate in a fast‑paced, enterprise environment focused on Real‑Time platform performance and observability at scale.

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