Senior Backend Engineer - Platform & Cloud (Remote, 6m)

Sphere Digital Recruitment; City Of London; Remote; GBP 92,000 - 111,000; Full time

Job summary

Sphere Digital Recruitment is seeking a Senior Backend / Platform Engineer Contractor to support the development and scaling of a critical internal platform. This hands-on role focuses on backend services, cloud infrastructure and platform scalability within a fast-paced product environment.

Based in London with remote flexibility, the contract runs for 6 months initially, with start date ASAP. The role pays £500-£600 per day Outside IR35 and may involve occasional office travel.

Qualifications

• Strong commercial experience with Python development.
• Experience building and scaling cloud-native applications.
• Strong knowledge of GCP and infrastructure best practices.
• Experience with FastAPI or similar backend frameworks.
• Understanding of platform engineering, DevOps or cloud architecture.
• Experience working in start-up, scale-up or product-led environments.
• Comfortable operating in fast-moving teams with evolving requirements.
• Strong communication and stakeholder management skills.

Responsibilities

• Developing and enhancing backend services and APIs.
• Improving platform performance, reliability and scalability.
• Designing solutions to support growing data volumes and user demand.
• Working with cloud infrastructure and deployment tooling.
• Supporting integrations with third-party systems and services.
• Implementing monitoring, logging and observability capabilities.
• Collaborating with product and engineering teams to deliver new functionality.
• Advising on architecture and technical best practices.
• Helping establish processes to support future platform growth.

Skills

Python development

Cloud-native apps

GCP architecture

FastAPI

Tools

Terraform

React/TypeScript

Job description

Sphere Digital Recruitment is seeking a Senior Backend / Platform Engineer Contractor to support the development and scaling of a critical internal platform. This hands-on role focuses on backend services, cloud infrastructure and platform scalability within a fast-paced product environment.

Based in London with remote flexibility, the contract runs for 6 months initially, with start date ASAP. The role pays £500-£600 per day Outside IR35 and may involve occasional office travel.