Implementation Manager - Spend

As the Implementation Manager for our Spend Team, you will own the end-to-end delivery of complex Spend and corporate card implementations that bring our global spend management products to life for enterprise and high-growth customers across EMEA. You will turn agreed business requirements and solution designs into actionable implementation plans, orchestrating cross-functional teams and external stakeholders to deliver on time, on scope, and to a high quality bar. You’ll sit at the intersection of Sales, Merchant Services, Solutions Engineering, Product, Operations, Risk and external partners (e.g. networks, processors, manufacturers), ensuring that every phase from pre-sale through go-live and early spend activation runs smoothly. This role is based in London (3 days in office), with implementation coverage across EMEA.

Responsibilities

Act as a trusted technical advisor to customers and internal teams on high-value implementations and expansions, shaping integration approaches, system configuration, and overall solution design; Partner with activation / onboarding and account management teams to translate customer requirements into scalable architectures, particularly where ERP, HRIS, and API integrations are core to the rollout; Work with sales teams on technical discovery to understand customer systems, data flows, and workflows, and recommend a best-fit integration blueprint, including when and how to leverage APIs and third-party connectors; Work hands-on with customers to troubleshoot integration hurdles and guide them through complex configuration decisions, focusing on designing robust, maintainable implementations rather than writing code directly; Serve as a subject matter expert on the broader integration ecosystem (e.g. HRIS and accounting partners), collaborating with Sales, Product, and partners to close gaps and improve integration coverage; Create and maintain internal documentation, playbooks, and lightweight tooling that make it easier for the wider team to support integration-heavy use cases at scale; Channel customer pain points and integration feedback into Product and Engineering, influencing the roadmap and prioritisation of features that materially improve implementation outcomes

Requirements

Bachelor’s degree in a related field (e.g. Business, Finance, Engineering, Information Systems) or equivalent practical experience; 5+ years of experience in implementation, onboarding, customer success, or project/program management, managing complex, multi-stakeholder technology or financial services implementations; 4+ years of client-facing delivery or professional services experience in a high-paced environment (e.g. SaaS, fintech, consulting, systems integration, enterprise implementation); Proven track record of successfully delivering cross-functional projects with stakeholders from diverse backgrounds and job functions, including C-level executives, technical teams, and operations; Exceptional written and verbal communication and presentation skills, including the ability to lead steering meetings, write clear status updates, and influence decisions without direct authority; Experience delivering ERP, accounting system, or expense platforms (e.g. Netsuite, SAP, Oracle, Xero) implementations and the associated data flows (GL, cost centres, entities, card feeds)

Nice to have

Hands-on experience working with or alongside integration engineers, solution architects, or technical program managers on API-based integrations, including familiarity with common web, SSO, and ERP integration concepts; Formal training or certification in project management or agile delivery (e.g. PMP, PRINCE2, Scrum Master), and comfort setting up operating rhythms such as stand-ups, steering committees, and executive readouts; Experience managing strategic or enterprise accounts as part of a broader account team, including navigating commercial sensitivities while protecting delivery quality and scope; Ability to thrive in a fast-moving, ambiguous environment, balancing structured methodologies with pragmatic decision-making to keep complex projects moving forward