Platform Engineer/SRE - Hands-on Coding

Job Title:Platform Engineer/SRE - Hands-on Coding
Location: Sheffield - 3 days per week in the office
Salary/Rate: Up to £425 per day inside IR35
Start Date: 01/06/2026
Job Type: Contract until the end of the year

Company Introduction
We have an exciting opportunity now available with one of our sector-leading financial services clients! They are currently looking for a skilled Platform Engineer/SRE with strong hands-on coding experience to join their team for a contract until the end of the year.

Job Responsibilities/Objectives

This role sits within the Central Platform organisation spanning:
Platform Engineering & Site Reliability Engineering (SRE)
Developer Tooling and Integration
The position focuses on building, operating, and sustaining resilient platform services that support large-scale engineering teams. While this is not a full-stack developer role, strong hands-on coding capability is essential.

• Design, build, and operate reliable, resilient platform services.
• Contribute actively to hands-on coding on a daily basis.
• Support and improve platform reliability, performance, and scalability.
• Apply SRE principles to ensure availability, resilience, and efficient recovery.
• Participate in and support incident management, including diagnosis and restoration.
• Collaborate with engineering teams on developer tooling and platform adoption.

Required Skills/Experience
The ideal candidate will have the following:

• Strong hands-on coding experience, used daily.
• Proficiency in at least one high-level language such as Python, Java, Node.js, or similar.
• Solid understanding of microservices architecture and how distributed systems operate.

Strong knowledge of:

• HTTP/REST
• Load balancing concepts
• Service-to-service communication

Experience in Platform Engineering and/or SRE roles, with a focus on:

• Resilience
• Availability
• Fault tolerance
• Service reliability
• Good understanding of how web services operate at scale.
• Comfortable operating in production environments.
• Practical, hands-on, and delivery-focused.
• Able to think holistically about systems, not just individual components.

If you are interested in this opportunity, please apply now with your updated CV in Microsoft Word/PDF format.

Disclaimer
Notwithstanding any guidelines given to level of experience sought, we will consider candidates from outside this range if they can demonstrate the necessary competencies.
Square One is acting as both an employment agency and an employment business, and is an equal opportunities recruitment business. Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statement.