We are Landsec We identify and shape places that create opportunity, enhance quality of life, and bring joy to the people connected to them. This is how we’ve created the UK’s leading portfolio of urban places and one of the largest real estate companies in Europe. Our £10 billion portfolio is built around premium workplaces, the country’s pre-eminent retail platform, and a residential pipeline that will redefine urban life. We’ve honed this ability over 80 years. Spotting the opportunities, building the partnerships, and continually adapting to shape the places that meet the needs of a changing world. Places where life happens. Where businesses grow. And where cities are defined. Location This role is based at Victoria, London and offers hybrid working (3 days in the office). The Team You will be reporting to the Product Owner and working closely with the Finance and Data and Tech team. The Role The Master Data Administrator is responsible for the day-to-day administration, maintaining, governing, and enhancing Landsec’s core master data across financial, operational, and property‑related domains. The role ensures data accuracy, consistency, and compliance with governance standards to support business operations, reporting, and decision‑making, aligned with industry‑standard master data management practices. This role sits within Landsec’s Finance System Admin Team, a specialist function responsible for the stewardship, administration, and optimisation of Landsec’s core financial systems. The Master Data Administrator reports directly to the Product Owner D365 and OneStream, who oversees the roadmap, governance, and continual improvement of Landsec’s finance platforms. As a key member of this central finance systems capability, the Master Data Administrator plays an essential role in ensuring Finance has access to consistent, accurate, and trusted master data to support consolidation, reporting, analysis, and operational performance. Salary: Competitive Principle Accountabilities Master Data Maintenance & Quality Create, validate, and maintain master data records across finance and operational systems (including Dynamics 365 Finance, FIS Treasury System, Banking Systems, Workday and OneStream) and processes, ensuring accuracy, completeness, and consistency. This includes processing day‑to‑day administration requests such as set‑up, amendments, inactivation’s, and corrections for entities including units, suppliers, customers, bank accounts, legal entities, and approval hierarchies, in line with documented procedures and approval controls. Conduct regular data quality reviews and implement cleansing activities to eliminate duplicates, errors, and incomplete records. Maintain audit logs and change records to support compliance, traceability, and internal controls requirements. Maintain and regularly update the Delegated Authority (DA) framework, reviewing approval hierarchies and access levels, identifying required changes, and coordinating formal senior management sign‑off prior to implementation. Data Governance & Compliance Working with Data Governance Director to apply and uphold Landsec’s master data governance policies, ensuring adherence to data standards, ownership rules, and approval workflows. Support the continued improvement of master data governance frameworks, working closely with data stewards and key stakeholders to maintain data integrity and consistency. Support the design and enhancement of data quality rules, validation checks, and system controls. Cross‑Functional Collaboration Act as a key liaison between business units (Finance, Property, Operations, Procurement, Projects) and Data & Technology teams, ensuring business requirements are clearly understood and appropriately implemented. Coordinate with Data & Technology teams and external support partners during data migrations, system upgrades, and new system rollouts, ensuring accurate master data conversion, validation, and sign‑off. Process Improvement & Knowledge Sharing Working with Data & Technology Team to proactively identify opportunities to streamline, improve and automate master data processes, controls, and data flows. Oversee the development and maintenance of training materials, guidance notes, and documentation to promote best‑practice data handling across the organisation. Contribute to continuous improvement initiatives led by the Finance System Admin Team and the Product Owner. Essential Criteria Strong attention to detail with a high level of accuracy when working with large and complex data sets. Comfortable and confident working with technology, with the ability to quickly learn and use multiple business systems (e.g. ERP, EPM, Banking Systems), follow system‑driven processes, and adapt to new tools and ways of working. Strong Excel skills, including the use of formulas (e.g. lookups, conditional logic), data validation, pivot tables, and data analysis techniques to support master data maintenance and quality checks. Experience working with ERP or financial reporting systems (e.g. Dynamics 365 Finance, OneStream or similar) and interaction with other business functions. Experience using Excel for data cleansing, reconciliation, and validation, including working with large datasets extracted from enterprise systems. Knowledge of financial master data, including General Ledger, cost centres, vendors, and customers. Understanding of data governance principles, data quality management, and data standards frameworks. Excellent communication and stakeholder management skills, with the ability to collaborate across multiple business functions. Desirable Experience using Excel for data cleansing, reconciliation, and validation, including working with large datasets extracted from enterprise systems. Experience with Excel Data Add-ins for data management activities Experience in toolsets for import, export, migrate, integrate, validate and manage data across environments. Life and Benefits at Landsec We have a great benefits package, there to support you with your work-life balance and in moments that matter. We offer fantastic Learning and Development opportunities to help you grow and reach your potential and we also play our part in supporting the communities where we live and work. Below are some of our core benefits, make sure to visit our My Total Reward page for more information. Performance based annual bonus plan 25 days annual leave (plus bank holidays) rising to 27 days after 2 years and the option to purchase up to 10 additional days each year. Enjoy an additional three-day December festive break on top of your leave and a special ‘My Day’ to take off for whatever you choose. Enhanced pension contributions – Landsec will contribute up to 10.5% subject to your contribution. Private medical insurance, Health Cash Plan, Life assurance and income protection. Enhanced maternity, adoption, shared parental leave policies (view our Family policies page for more details) Two different share plans enabling you to share in the success you will help to build Up to 4 working days to volunteer per year and 'Give As You Earn' programmes allowing you to donate to charities straight out of your pay and we top up by 20% And when it comes to your health and wellbeing you will also have access to other benefits: our employee assistance programme, digital GP, cycle to work scheme, a mindfulness app and a health app supporting fertility and menopause Diversity and Inclusion At Landsec, we value diversity & inclusion. We work to better reflect the diversity of the communities we work within and empower everyone who works at Landsec to realise their potential. We strive to ensure all our information, and services are accessible to and usable by everyone. If you would like to receive any information in a different way or would like us to do anything differently to help you apply for our roles, please get in touch with our recruitment partners by emailing recruitmentqueries@landsec.com To find out more about our approach, visit our Diversity and Inclusion page .