Senior Backend Platform Engineer (Scale & Observability)

Caspian One; Sheffield; Hybrid; GBP 70,000 - 110,000; Full time

Job summary

Caspian One is partnering with a top-tier financial institution on a major platform engineering initiative and is looking to hire experienced Senior Platform Engineers (Backend-Focused) to support the evolution of its internal developer platform.

This opportunity sits within a large, global engineering organisation, focused on improving developer experience, strengthening platform capabilities, and delivering scalable backend systems used by thousands of engineers across the bank.

Qualifications

• Strong hands-on backend engineering in Java, Node.js or Python.
• Proven experience building APIs and distributed systems at scale.
• Solid understanding of HTTP, DNS, TLS, load balancing, gateways and service mesh.
• Exposure to containers, Kubernetes and Docker.
• Familiarity with Grafana, Prometheus, OpenTelemetry or similar observability tooling.
• Ability to independently deliver system design, architectural decisions and end-to-end solutions.

Responsibilities

• Design and build backend services and APIs that underpin the internal developer platform.
• Translate complex engineering problems into robust system designs and production-ready code.
• Contribute to platform components supporting hybrid on-prem and cloud environments.
• Improve reliability and observability across distributed systems.
• Collaborate with SRE, DevOps and platform teams to enhance performance, scalability and engineering standards.
• Provide technical leadership within a coding-first, engineering-led culture.

Skills

Java

Node.js

Python

APIs

Distributed systems

HTTP/TLS/load balancing

Kubernetes

Docker

Observability tooling

Tools

Grafana

Prometheus

OpenTelemetry

Job description

Caspian One is partnering with a top-tier financial institution on a major platform engineering initiative and is looking to hire experienced Senior Platform Engineers (Backend-Focused) to support the evolution of its internal developer platform.

This opportunity sits within a large, global engineering organisation, focused on improving developer experience, strengthening platform capabilities, and delivering scalable backend systems used by thousands of engineers across the bank.