F5 Consultant

At Abacus, we specialize in technology, outsourcing, and people solutions, bringing nearly 40 years of experience shaped alongside the organisations we support. As a global professional services leader, our focus remains on providing bespoke solutions that enable organisations to create the future of business and embrace change for sustainable growth, powered by a global team of over 5,000 people.

Across digital transformation, emerging technologies, SAP enterprise solutions, outsourcing, and human capital, we support organisations in building environments that operate effectively and scale with the business. Today, this extends to more than 1,500 enterprise clients, where the focus remains on creating systems that are not only functional, but ready to adapt and evolve over time.

Abacus is seeking an experienced F5 Consultant to provide high-priority, on-demand technical support during critical dress rehearsal simulations, cutover/go-live phases, and post-go-live hypercare. You will work closely with network, application, and client stakeholders to ensure seamless traffic routing, resolve real-time connectivity and configuration issues, and maintain high availability across all F5 infrastructure components.

As an F5 Consultant, you will be responsible for:

• →Dress Rehearsal Support: Providing live on-call standby support during simulated go-live events to test and validate system behavior.
• →Traffic & Routing Optimization: Diagnosing and resolving traffic flow issues across Virtual IPs (VIPs), pools, and backend nodes while modifying routing logic, traffic distribution methods, and virtual server configurations in real-time based on test outcomes.
• →Health Monitoring & Validation: Performing hands-on configuration and validation of health monitor responses and backend server availability across environments.
• →SSL/TLS & Profile Management: Supporting SSL/TLS certificate deployments, offloading, or renewals, and fine-tuning persistence profiles and load-balancing algorithms to mirror expected production behavior.
• →End-to-End Troubleshooting: Diagnosing connectivity between F5 infrastructure, external systems, APIs, and firewalls, while thoroughly documenting any unexpected behavior.
• →Go-Live Cutover Oversight: Delivering critical real-time technical oversight during the production go-live cutover to ensure seamless operation of F5 configurations and rapid resolution of emergent incidents.
• →Post-Go-Live Support (Hypercare): Delivering dedicated post-go-live hypercare support to monitor environment stability and remediate residual performance or routing issues.
• →Stakeholder Collaboration: Working closely with network, application, and client teams to ensure clear communication and documentation of incident resolutions, configuration tweaks, and test outcomes.

• Hands-on F5 BIG-IP Pool Management: Proven hands-on experience with F5 BIG-IP health monitoring and pool management, going well beyond conceptual knowledge.
• F5 LTM & GTM / DNS Expertise: Proven experience configuring, managing, and troubleshooting F5 BIG-IP LTM (VIPs, pools, nodes, health monitors, persistence profiles, SSL/TLS profiles) as well as practical experience in GTM / DNS and global traffic management configuration.
• HA Clustering & Failover: Hands-on experience with High Availability (HA) clustering and failover configuration to maintain resilient, high-availability infrastructure.
• Network & Security Integration: Strong understanding of end-to-end traffic flow, routing logic, API integrations, and firewall interactions.
• Consulting & Stakeholder Management: Strong client-facing consulting, communication, and stakeholder management skills, given the consulting nature of the engagement.
• Troubleshooting: Rapid diagnostic and problem-solving capabilities for live environment issues across network and application tiers.
• Availability & Strict SLA Commitment: Strict commitment to nighttime/early morning support hours (3:30 AM to 7:00 AM PKT) and extended pre-check periods, with a guaranteed 15-minute response time during agreed standby and go-live windows.
• Documentation Skills: Ability to deliver clear, professional documentation of incident resolutions, configuration tweaks, and dress rehearsal outcomes.

• Professional F5 certifications (e.g., F5-CA, F5-CTS LTM / GTM).
• Exposure to client-facing consulting or professional services environments.
• Experience with enterprise cutovers, go-live simulations, and hypercare support models.

WHAT WE OFFER

• Competitive compensation package commensurate with experience.
• Exposure to large-scale, enterprise-grade platform and API projects.
• A collaborative, innovation-driven, and growth-oriented work environment.
• Continuous learning opportunities and access to professional development resources.
• Opportunity to work with a globally recognised professional services leader.
  

Abacus | Enabling Organisations to Create the Future of Business