System Engineer (IoT Infra, Network & Server)

Yadimen Consulting Limited; Greater London; On-site; GBP 40,000 - 65,000; Full time

Job summary

Yadimen Consulting Limited is seeking a hands-on L2–L3 Systems Engineer for enterprise IoT deployments in City of London. The role covers devices, networks, Windows/Linux servers, and SaaS platforms, with a focus on security and migration projects.

You will configure devices, perform patch testing, rollout activities, and troubleshoot across a mixed environment. Strong documentation and vendor coordination are essential.

Qualifications

• Windows and Linux server administration.
• IoT/OT device configuration, troubleshooting, and support across multiple platforms.
• SaaS platform experience, including SAML and OIDC.
• Security fundamentals: authentication, authorisation, encryption.
• Strong documentation skills — clear, maintainable, and auditable.
• Comfortable in a high-security, production enterprise environment.

Responsibilities

• Supporting and implementing enterprise IoT/OT device infrastructure — config, maintenance, patching, troubleshooting.
• Translating architectural designs and requirements into operational implementations.
• Performing patch testing, deployments, and device validation.
• Troubleshooting complex issues across device, network, server, and platform layers.
• Managing migration, refurbishment, and new IoT platform rollout projects.
• Writing and maintaining runbooks, technical documentation, and operational guides.
• Ensuring compliance with enterprise security standards — auth, authorisation, encryption.
• Working with vendors and stakeholders to implement and future-proof systems.

Skills

Windows server

Linux server

IoT/OT device config

SaaS platforms (SAML/OIDC)

Security fundamentals

Documentation

Enterprise environment

Job description

London, United Kingdom | Posted on 04/13/2026

L2–L3Systems Engineering · Enterprise IoT · City of London (EC1)

? Location: City of London (EC1) — onsite

? Rate: Rate as per experience · Inside IR35

? Level: L2 to early L3

Aboutthe Role

A hands-onsystems engineering role supporting enterprise IoT deployments alongsidebroader infrastructure work. This is not a Windows admin or L1 support position— the client needs L2 to early L3 depth across devices, networks, servers, andSaaS platforms.

You’ll beinvolved in device configuration, patch testing, rollout activities, andtroubleshooting across a mixed environment that includes IoT systems (buildingmanagement, lighting, occupancy, air quality), Windows and Linux servers, andcloud/SaaS platforms.

Requirements

WhatYou'll Be Doing

• Supporting and implementing enterprise IoT/OT device infrastructure —config, maintenance, patching, troubleshooting
• Translating architectural designs and requirements into operationalimplementations
• Performing patch testing, deployments, and device validation
• Troubleshooting complex issues across device, network, server, andplatform layers
• Managing migration, refurbishment, and new IoT platform rollout projects
• Writing and maintaining runbooks, technical documentation, andoperational guides
• Ensuring compliance with enterprise security standards — auth,authorisation, encryption
• Working with vendors and stakeholders to implement and future-proofsystems

WhatWe Need

• Windows and Linux server administration
• IoT/OT device configuration, troubleshooting, and support acrossmultiple platforms
• SaaS platform experience, including SAML and OIDC
• Security fundamentals: authentication, authorisation, encryption
• Strong documentation skills — clear, maintainable, and auditable
• Comfortable in a high-security, production enterprise environment