Security Engineer

Security Engineer (Contract) | £600-£650 per day, Inside IR35 Location: London We’re recruiting for a hands-on Security Engineer to join a security team on an initial 6 month contract. The immediate priority is…

Inside IR35 Hybrid IT
Pay rate £600 – £650/day
Contract type Contract
Posted 19 October 2026

Trusted. Transparent. Built for contractors. Thousands of UK contractors find their next contract on ContractorUK.

View all IT & technology jobs ›

About this contract

Security Engineer (Contract) | £600-£650 per day, Inside IR35
Location: London

We’re recruiting for a hands-on Security Engineer to join a security team on an initial 6 month contract.

The immediate priority is migrating logs from Fluent Bit/QRadar to a Splunk service, running both SIEMs in parallel through cutover. Beyond that, you’ll support the wider team on a mix of security engineering projects and work with a third party on detection rules.

This is a broad engineering role, not a SIEM specialist or admin position.

What you’ll be doing:

Migrating log feeds to Splunk using intermediary shipping software, validating parsing, completeness and volumes before and after cutover
Writing and debugging Python and shell tooling for log collection, forwarding and validation
Onboarding and tuning log sources (firewalls, EDR, cloud, authentication, proxies)
Supporting detection rule and use case work alongside a third party
Working with SOC, IR and threat detection teams on log reliability and detection quality
Documenting log flows and operational procedures
What we’re looking for:

Strong hands-on security engineering experience across varied projects
Strong Linux skills and solid programming experience, including Python and debugging code
Security operations knowledge
Some SIEM experience (QRadar, Splunk or similar). QRadar isn’t essential, though QRadar migration experience is relevant
Experience with Fluent Bit or similar log forwarders
Understanding of log transport (syslog, TCP, UDP, API-based collection)
Comfortable working with third parties and the wider team
Details:

£600 - £650 P/D Inside IR35
Hybrid role - 3 days P/W onsite
Initial 6-Month contract
Nice to have: architecture or design experience, and Splunk exposure

Apply for this job

You'll complete your application on CV-Library, our jobs partner.

← More IT & technology jobs

Set up for this contract

ContractorUK partners
Markel Direct IR35 and contractor insurance

Most agencies and clients ask for professional indemnity and public liability before you start.

Get your quote →
Umbrella companies Inside IR35: you will be paid through an umbrella

Compare the umbrella companies listed on ContractorUK before you accept.

Compare umbrellas →

Get new IT contracts by email

One email when new matches appear. Unsubscribe with one click.

Prefer to be found? Upload your CV to CV-Library — free