Systems Engineer

Job Title: Systems Engineer
Location: London- 3 days per week in office
Salary/Rate: £350 day rate inside ir35
Start Date: April 2026
Job Type: 1 year contract- likely to be extended

We are seeking a highly motivated and versatile System Engineer / System Analyst to join our growing team. This role is ideal for someone with a strong technical foundation across systems, networking, and IoT, combined with excellent analytical and communication skills. You will play a key role in designing, supporting, and optimizing complex technical environments while collaborating with a wide range of stakeholders.

Job Responsibilities/Objectives

• Design, implement, and support server environments across Windows and Linux platforms
• Perform system analysis to identify improvements, resolve issues, and enhance performance
• Configure, maintain, and troubleshoot IoT devices and related infrastructure
• Work with APIs and integrate systems within diverse technical environments
• Support and maintain cloud-based and hybrid infrastructures
• Manage SaaS applications, including authentication protocols such as SAML and OIDC
• Troubleshoot networking issues involving firewalls, load balancers, and proxy servers
• Provide L2 and L3 support, ensuring timely resolution of escalated issues
• Collaborate with vendors, internal teams, and external partners to deliver technical solutions
• Lead or contribute to projects including device deployment, migration, and testing
• Maintain clear and accurate technical documentation
• Communicate complex technical concepts to non-technical stakeholders

Required Skills/Experience

• Strong knowledge of Windows, Linux, and networking fundamentals
• Experience with IoT devices, including configuration, troubleshooting, and lifecycle management
• Familiarity with cloud technologies and hybrid working environments
• Solid understanding of APIs, SaaS platforms, and authentication protocols (SAML, OIDC)
• Knowledge of IT support frameworks (L1, L2, L3), with hands-on L2/L3 experience
• Understanding of security principles including encryption, authentication, and authorization
• Proven analytical and problem-solving skills
• Experience managing projects such as system migrations and deployments
• Strong documentation and communication skills

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.