Main Purpose:Cornerstone are looking for a Portfolio Asset Manager to manage, develop and promote strategic relationships with multi-site portfolio owners and the owners of the key property portfolios including but not limited to Network Rail, TFL, Water Companies, Councils, Heathrow ,Gatwick and other airports.Key ResponsibilitiesContract/commercial Management - Contract manage the commercial relationship with MSA/Portfolio providers and lead the negotiation of appropriate portfolio framework and/or template Code agreements. Achieve this through structured portfolio account plans.Stakeholder & Relationship Management - Build & maintain effective working relationships with other Cornerstone teams to ensure Cornerstone policy is understood & applied consistently and improve certainty that objectives will be achieved by setting realistic expectations, delivering on commitments & effective communication.Continuous Improvement - Identify areas for improvement & take ownership of specific issues through to resolution to drive improved performance and achieve targets.Supplier Management - Manage 3rd party suppliers to ensure they comply with all processes and guidelines applicable to each MSA/portfolio by creating an environment that drives success & secures business targets through reporting and management of key deliverables.Risk, Issue & Dependency Management - To proactively surface and record all risk, issues & dependencies, subsequently managing their mitigation and resolution or escalating those that cannot be solved. Person SpecificationExperience (technical, managerial, industry)Considerable telecoms property functional knowledge gained from working in a mobile network environmentExperience of telecoms asset management and/or site portfolio management is preferred.Extensive experience of delivering material volumes of sites against agreed targetsConsiderable experience of managing 3rd party suppliersConsiderable experience of working under pressure in a complex & changing environmentKnowledge of property litigation including an understanding of the Electronic Communications Code and Landlord & Tenant Act legislation in the UK Cornerstone Values Operate and uphold Cornerstones’ values of delivering excellence, stronger connections, sharper solutions, and inspiring transformation.What we Offer Competitive salary and bonus structure.Competitive pension scheme.Flexible working/Work from HomeLife insurance.Cycle to Work.Retail Discounts.Competitive refer a friend scheme.Private Healthcare Insurance. If this role is of interest and you would like to find out more about joining the Cornerstone family, please apply with an up to date CV.