Key Facts

Remote From:

United Kingdom

Fixed term

English

Hard Skills

Scripting Project Management Internal Documentation Risk Analysis

Roles & Responsibilities

Proven F5 BIG-IP migration experience, ideally iSeries to rSeries or equivalent hardware refresh
Strong working knowledge of F5OS: tenant creation, licensing, platform management
Hands-on experience with LTM, DNS (GTM), APM, and ASM
Solid understanding of HA failover configuration and testing

Requirements:

End-to-end delivery across seven phases: Planning, Preparation, Platform Setup, Component Testing, Configuration Migration, Cutover, Post-Cutover Support, Knowledge Transfer
Produce the migration plan, runbook with rollback steps, and testing plan for stakeholder sign-off
Lead two out-of-hours change windows including failover, verification, and post-cutover testing
Deliver a 4-hour session covering operations, administration, backup/restore, and troubleshooting

C-Serv

About C-Serv

The key to success? The right people—though they’re not always easy to find. At C-Serv, we’re more than a talent acquisition or staff augmentation firm — we’re your partner in building the future of tech. Since 2013, we’ve worked with over 100 companies across 25 countries, from startups to billion-dollar enterprises, to deliver tech strategies and assemble high-impact teams that turn visions into reality. What We Do: 🔹 Talent Acquisition with Purpose We go beyond the resume, sourcing professionals who not only bring the technical expertise you need but who also resonate with your company’s culture and values. Whether you need specialized individuals or full teams, we’re here to deliver tailored talent that fits. 🔹 Global Workforce Management For companies looking to scale quickly with top-tier talent, our staff augmentation services provide seamless access to specialists around the world without the overhead of direct hiring. From a single star player to a full team, we bring flexible, scalable solutions that adapt to your needs. 🔹 Global Mobility & Compliance Solutions Navigating hiring internationally is challenging. C-Serv’s expertise in global mobility allows you to access skilled professionals worldwide while remaining fully compliant. We handle the complexities of international hiring, so you can focus on growth. Our Philosophy: We believe that a company’s success depends on the strength and alignment of its people. At C-Serv, we prioritize partnerships that value people as much as results, helping to foster teams that are inspired, adaptable, and ready to tackle tomorrow’s challenges. Let’s Build the Future Together If you're ready to build a tech team that makes people your competitive advantage, reach out to explore a partnership. Email us at info@c-serv.com—let's get started.

Founded: 2018

Company size: 51 - 200

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Job description

A short, high-impact 21-day contract for an experienced F5 engineer ready to own a full platform migration from legacy i5800 appliances to the rSeries r5600 platform. The engagement is due to commence at the end of August and is expected to be outside IR35.

Our client is migrating four F5 BIG-IP appliances across two data centres, transitioning vCMP guest configurations to F5OS tenants. The environment runs BIG-IP v17.1+ across HA pairs provisioned with LTM, DNS, APM, and ASM. This is a like-for-like migration with a clear scope, structured cutover windows, and a well-defined architecture. The equipment is procured and the project is ready for execution.

What You'll Own

End-to-end delivery across seven phases:

Planning & Preparation: Review the existing F5 configuration (including QKView analysis), identify migration risks, and produce the migration plan, runbook with rollback steps, and testing plan for stakeholder sign-off.

Platform Setup: Prepare UCS files, establish management access on the r5600 devices, activate F5 cloud licensing, upgrade F5OS, create BIG-IP tenants, and provision all modules. Import and adapt the base configuration offline to ensure zero production impact. Configure HA failover, SYSLOG/SNMP monitoring, and remote authentication (LDAP/AD/TACACS/RADIUS).

Component Testing: Execute cold testing, cold commissioning, and hot failover testing on each HA pair. Produce test evidence for customer witness sign-off.

Configuration Migration: Like-for-like migration of LTM, ASM, and APM configurations. Integrate new DNS BIG-IPs into the existing sync-group. Validate connectivity, pool member availability, application monitoring, and licensing.

Cutover: Lead two out-of-hours change windows (4 hours each, one per DC), including failover, verification, and post-cutover testing.

Post-Cutover Support: Up to 4 hours of next-business-day support after each cutover.

Knowledge Transfer: Deliver a 4-hour session covering operations, administration, backup/restore, and troubleshooting. Update the As-Built documentation to reflect the migrated deployment.

Requirements

Essential

Proven F5 BIG-IP migration experience, ideally iSeries to rSeries or equivalent hardware refresh
Strong working knowledge of F5OS: tenant creation, licensing, platform management
Hands-on experience with LTM, DNS (GTM), APM, and ASM
Experience migrating vCMP guest configurations to F5OS tenants
Solid understanding of HA failover configuration and testing
Ability to produce professional migration runbooks, rollback plans, and test documentation
Comfortable managing out-of-hours cutover windows independently
Strong knowledge of TCP/IP, HTTP/S, DNS, and routing

Desirable