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Lead / Manager

Platform Implementation Manager

Confirmed live in the last 24 hours

FIRST Agency

FIRST Agency

ABC - London - KC
Hybrid
Posted April 2, 2026

Job Description

Building a Brand Starts with a Story

FIRST is a leading global brand experience agency providing Content, Creative, Digital Technology, Management & Delivery, and Data & Insights services. For 30 years, we have utilized three flexible delivery models: Embedded teams, Corporate Campus operations, and a Full-Service Agency.
 
Managing over 37,000 events & projects annually across 110 countries, FIRST serves 130+ brands, specializing in Fortune 500 companies within the Financial Services, Technology, Healthcare, Media, and Professional Services sectors. FIRST is part of the broader Encore family of companies. Encore is a global leader in event production and technology.
 
Consistently recognized for excellence, recent honors include 2026 Chief Marketer Agency of the Year, the Ad Net Zero Award for sustainability, and more. 

Learn more at www.firstagency.com

What You Would Get To Do

The Platform Implementation Manager is responsible for the strategic integration and governance of a highly customised instance of the Momentus SaaS platform across the client's global event ecosystem. This role serves as the primary technical and operational liaison between FIRST, Client, and Momentus (SaaS Vendor).

The Platform Implementation Manager functions as a platform steward and bespoke software configuration authority, ensuring that diverse service-line workflows are successfully standardised into a scalable global framework, while maintaining operational viability at the local level. The role combines enterprise systems implementation, program leadership, change management, and multi-vendor orchestration, with accountability for platform integrity, data governance, and global adoption. The position requires a highly adaptable communication style to serve the needs of all parties, acting as both an objective subject-matter expert and a project manager who builds trust easily and quickly.

Your Contributions

Global Implementation and Project Leadership

  • Serve as the primary project management lead for Momentus implementations in the assigned location, acting as the bridge between global standards set by client stakeholders and local operational needs. 
  • Establish professional credibility by proactively engaging with local teams to audit site-specific requirements while maintaining transparency about system constraints.
  • Effectively lead multiple projects concurrently, while navigating various stakeholder groups per project. Support project sponsors and owners using an established project framework to define objectives, scope, timelines, budget/internal equity considerations, governance structures, and RACI matrices.
  • Develop and manage detailed project plans, ensuring milestones, dependencies, and integration efforts are clearly defined and sequenced. Ensure projects remain on schedule by proactively monitoring progress, adjusting timelines as needed, identifying impacted dependencies, and communicating regularly with all stakeholder groups.
  • Prepare, present, and distribute project status reports on an agreed cadence. Maintain consistent stakeholder communications regarding milestones, risks, integration efforts, resource considerations, and overall program health.
  • Effectively facilitate internal and client-facing meetings, including scheduling, agenda development, prioritisation of discussion points, documentation of key decisions, tracking of action items, and monitoring follow-through to closure.

Platform and Technical Expertise

  • Maintain expert-level knowledge of the client’s custom-configured Momentus instance. Serve as the first-level technical authority on system logic and stewardship to determine if new site-specific requirements can be met by existing configurations.
  • Partner with Momentus SaaS experts and service line stakeholders to design, test, and implement new custom configurations when exi
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