Technical Lead - F5 & Network Infrastructure in London

Technical Lead – F5 & Network Infrastructure
Location: Remote
Day Rate: £400 – £500
Contract Inside IR35 6 months

About the Role
We are seeking an experienced Technical Lead with deep expertise in F5 BIG-IP technologies to lead the design, delivery, and support of critical network and application delivery services. This role combines hands‐on technical leadership with mentoring, project ownership, and stakeholder engagement.

You will act as a senior technical authority, guiding F5 deployments and migrations while supporting and developing junior engineers within a complex, multi‐tenant environment.

Key Responsibilities

Lead the design, deployment, upgrade, and migration of F5 BIG-IP platforms , including LTM and GTM/DNS

Provide expert-level (3rd line) support for F5 systems, resolving complex incidents and proactively preventing issues

Own and drive technical projects end‐to‐end, coordinating with internal teams and stakeholders to meet delivery milestones

Maintain high‐quality technical documentation , including network diagrams, configuration standards, and operational procedures

Delegate tasks across multiple workstreams, tracking progress and ensuring successful outcomes

Mentor and train junior engineers, fostering a culture of knowledge sharing and continuous improvement

Communicate clearly with technical and non‐technical stakeholders, translating complex concepts into actionable insights

Key Skills & Experience

Advanced, hands‐on experience with F5 BIG-IP (LTM and GTM/DNS)

Proven experience leading F5-focused technical projects (deployments, upgrades, migrations)

Strong troubleshooting and optimisation skills in enterprise‐scale environments

Experience working with multi‐tenant and virtualised platforms , including VIPRION and/or rSeries

Good general networking knowledge, including routing and switching

Working experience with ACI and Fortigate Firewalls

Strong organisational skills with the ability to manage multiple priorities simultaneously

Excellent written and verbal communication skills

Nice to Have

Experience with F5 HSM/FIPS

F5 Certifications (eg F5 Certified BIG‐IP Administrator or Solution Expert)

Additional networking or security certifications

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