Senior Network Designer

pAs a Senior Network Designer, you are responsible for designing secure, resilient, and scalable network, security, and application delivery solutions across ING's hybrid infrastructure. You act as a design authority for F5 BIG-IP LTM and GTM/DNS services, AS3-based onboarding models, Palo Alto security solutions, router ACLs, network segmentation, routing, VPN services, leased-line connectivity, and certificate management. /ppYou contribute to cloud migrations, Lifecycle Management (LCM) projects, F5 certificate automation, platform modernization, and the delivery of new network and application delivery capabilities. You translate business and technical requirements into target-state architectures, High-Level Designs, Low-Level Designs, reusable service patterns, and secure connectivity solutions. /ppYou work effectively with engineers, architects, service consumers, security specialists, and management. You combine clear communication with strong conceptual thinking and a structured approach to solution design. You are thorough, detail-oriented, and committed to producing accurate, maintainable, and high-quality architecture documentation. /ph3We are looking for you if you have: /h3ulliExtensive experience designing enterprise network, security, and application delivery solutions. /liliStrong knowledge of F5 BIG-IP LTM and GTM/DNS technologies and application delivery architectures. /liliExperience designing F5 services, including virtual servers, pools, health monitors, traffic steering, persistence, SSL/TLS, and high-availability solutions. /liliExperience with F5 AS3 and declarative application onboarding models. /liliKnowledge of certificate management, PKI integration, and SSL/TLS certificate lifecycle requirements. /liliExperience designing Palo Alto firewall rulebases, security policies, NAT configurations, security zones, and traffic flows. /liliExperience designing routing solutions, router ACL changes, network segmentation, VPN connectivity, and leased-line services. /liliStrong knowledge of DNS, Infoblox DDI/IPAM, traffic management, resilience, and disaster recovery principles. /liliExperience working in complex hybrid infrastructure environments. /liliThe ability to translate business, security, and technical requirements into scalable and supportable designs. /liliA strong focus on security, availability, resilience, and operational stability. /liliThe ability to work in accordance with ING standards, architecture principles, controls, and governance processes. /liliClear communication skills and experience working in an Agile environment. /li /ulh3You’ll get extra points for: /h3ulliExperience contributing to F5 certificate automation and automated certificate lifecycle management. /liliExperience designing integrations between F5 platforms, enterprise PKI services, certificate management tooling, and automation platforms. /liliExperience defining reusable AS3 templates and standardized application onboarding models. /liliExperience supporting cloud migration programmes. /liliExperience contributing to Lifecycle Management (LCM) and technology refresh projects. /liliExperience designing Global Server Load Balancing, high-availability, and disaster recovery solutions. /liliExperience developing reusable service patterns, design standards, and reference architectures. /li /ulh3Your responsibilities: /h3ulliDesign secure, resilient, and scalable network, security, DNS, connectivity, and application delivery solutions across ING's hybrid infrastructure. /liliAct as design authority for F5 BIG-IP LTM and GTM/DNS platforms and related application delivery services. /liliProduce and maintain High-Level Designs, Low-Level Designs, reference architectures, service blueprints, and reusable design patterns. /liliDesign F5 LTM services, including virtual servers, pools, pool members, health monitors, SSL/TLS profiles, traffic steering, load-balancing methods, persistence mechanisms, and Source NAT. /liliDesign F5 GTM/DNS solutions, including Global Server Load Balancing, wide IPs, pools, health monitoring, geographic traffic distribution, failover, and disaster recovery architectures. /liliDefine AS3-based onboarding models, reusable declarations, and standardized service templates for automated application delivery. /liliContribute to F5 certificate automation by defining design requirements, onboarding standards, integration patterns, and certificate lifecycle processes. /liliDesign scalable approaches for certificate issuance, deployment, renewal, replacement, revocation, and retirement on F5 application delivery platforms. /liliDefine integration requirements between F5 platforms, AS3 services, enterprise PKI, certificate management services, and automation tooling. /liliEnsure certificate automation designs support secure key handling, certificate traceability, expiry monitoring, controlled renewal, and operational resilience. /liliDesign Palo Alto firewall solutions, including security rulebases, security policies, NAT configurations, security zones, segmentation, and application traffic flows. /liliReview application connectivity requirements and t /li /ul #J-18808-Ljbffr