Platform Engineer

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.

Role 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

Key Experience Required;

• 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

Additional Context;

• Platform Engineering / SRE / DevOps exposure is beneficial, but this is a coding‑first role
• Experience in large enterprise or regulated environments is advantageous
• Strong communication skills and ability to operate within globally distributed teams
• Opportunity to influence engineering standards across a major organisation

Location & Working Pattern;

• Hybrid model (approximately 3 days onsite)

This is a high‑impact engineering opportunity within a substantial transformation programme, offering exposure to complex systems, large‑scale platforms and the chance to shape developer experience across a global organisation.

If of interest, please get in touch for further details.