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Information Technology Inside IR35 senior systems engineer

3 senior systems engineer jobs found

CL
Apr 04, 2026  
Senior Infrastructure Engineer
Senior Infrastructure Engineer £450 Per Day, Inside IR35 6-Month Contract Didcot, Oxfordshire Your new company We're supporting a nationally significant scientific research organisation recognised for delivering some of the most advanced and high-impact projects in the UK. Their digital platforms underpin cutting-edge experiments, secure collaboration and large scale data processing, and they rely on a modern, resilient infrastructure estate to keep these environments running safely and efficiently. As part of their ongoing investment in core services, they are seeking an experienced Senior Infrastructure Engineer to maintain, support and enhance their Microsoft 365, server, storage and authentication systems. This is a place where your technical expertise will directly contribute to work used across the UK science and innovation landscape. Your new role You'll take responsibility for the hands-on support and maintenance of both on-premise and cloud-based infrastructure....
IR35 Status:
Inside IR35

CV-Library Oxfordshire, UK Contractor
CL
Mar 29, 2026  
Senior Backend Engineer
Job Title: Senior Backend Engineer Location: Dunton Essex - 4 days minimum mandatory onsite Rate: £67.15ph Umbrella Co Basis (Inside IR35) Employment Type: Contract (31.12.26) Hours: Standard 37.5 Hours Per Week Reference: F56475 The Senior Backend Engineer plays a pivotal role in driving the technical success in our backend teams. This position involves architecting scalable, resilient, and secure backend solutions and overseeing the technical completion of critical development tasks, often in ambiguous situations. The Senior Backend Engineer is responsible for ensuring that backend code and architectural reviews are aligned with organisational goals, facilitating productive technical discussions, and making decisions to resolve complex backend engineering issues effectively. In this role, the Senior Backend Engineer supports the technical direction for backend development, offering guidance to team members and exemplifying technical excellence in backend practices....
IR35 Status:
Inside IR35

CV-Library SS15, Laindon, Essex Contractor
CL
Apr 02, 2026  
Senior DevOps Engineer
Senior DevOps Engineer – 6-month contract – London/Remote – SC Clearance – Inside IR35 My Financial Customer is looking for a Senior DevOps Engineer to join a growing technology team responsible for maintaining and evolving a complex on-premise platform. This role will play a key part in ensuring the reliability, performance, and continuous improvement of the organisation’s technical estate while supporting the delivery of new services. This Senior DevOps Engineer is required to have experience with the following: Cloud Platform (Azure, AWS, or GCP), Kubernetes, IaC using Terraform and CI/CD pipelines. Skills & Experience required from the Senior DevOps Engineer: Active SC Clearance Cloud Platforms (Azure, AWS, or GCP) Strong experience supporting production environments, including on-call support and release management. Hands-on experience with Kubernetes or OpenShift in on-premise environments. Proven background in Linux system administration Experience implementing...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
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