A leading UK-based organisation is seeking a Senior Technical Solution Designer to join its specialist team delivering complex network, voice, wireless, and security solutions. This is a hands-on role for someone who thrives in post-sales technical delivery, enjoys leading solution design, and is passionate about driving customer success.About the Role:You''ll be responsible for translating high-level designs into detailed, low-level implementations across technologies such as SD-WAN, SD-A, ISE, ACI, Webex, MS Teams, and NextGen firewalls. You''ll lead technical direction, manage solution validation, and ensure seamless handover to support teams-all while keeping the customer at the heart of every decision.Key Responsibilities:Capture and translate customer requirements into detailed technical designs.Act as a single point of contact for technical delivery and solution direction.Lead validation and integration of new and in-life services.Drive improvements in design and delivery processes.Manage customer engagement and statement of work creation.Provide technical leadership in complex bids and strategic solution design.Plan and implement customer migrations, including occasional out-of-hours work.Resolve complex service issues and lead root cause analysis.Ensure compliance with industry standards and internal policies.Skills and Experience Required:Strong stakeholder management and leadership skills.Collaborative mindset with experience working across pre-sales, project manag