Interim System Implementation Specialist

12-15 month fixed-term contract · On-site, London · Immediate start

Ever wanted to be the person who actually gets a major system implementation over the line? A well-established property business is midway through rolling out MRI Horizon across the organisation, and is looking for a hands-on implementation specialist to help drive it to a successful go-live.

This is a pivotal, high-visibility role. You'll sit at the heart of the programme, owning the data that everything else depends on, working shoulder to shoulder with project consultants, internal property teams and the MRI implementation team, and making the calls that keep the project on track.

What you'll be doing

• Preparing, cleansing and migrating property and tenancy data into MRI Horizon, mapping legacy fields to the new schema and making sure nothing gets lost in translation.
• Running data reconciliation: hunting down gaps, anomalies and inconsistencies, then working with teams across the business to put them right.
• Coordinating and supporting UAT, building test scenarios, logging defects, and driving them to resolution before go-live.
• Using Excel, Access and AI-assisted workflows (think Claude and other LLMs) to automate the repetitive work and work smarter.
• Being on the front line during cutover and go-live, then keeping data integrity watertight afterwards.
• Spotting opportunities to improve processes and automate, your ideas will be heard!

What you'll bring

• Experience within the property or real estate sector, this is essential.
• A track record on software implementation or data migration projects.
• Strong data-mapping skills and advanced Excel (large datasets, lookups, pivots, validation).
• Hands-on UAT experience, defect logging, retesting, the lot.
• A methodical, detail-obsessed approach to data quality.
• Confident communication across technical and non-technical stakeholders.

Nice to have

• MRI Horizon (or similar) experience.
• Property management and leasehold knowledge.
• Comfort using AI tools for data processing and automation.
• Microsoft Access or similar database tools.

This is a rare chance to make a genuine, visible impact on a business-critical project from day one. If you're an implementation specialist who loves bringing order to complex data and seeing a project through to the finish line, we'd love to hear from you.