Client Implementation Project Manager

Job DescriptionThe Role:We’re seeking a hands‑on, results-driven Client Implementation & Project Manager to join our PMO team.Constellia is a dynamic and growing business committed to delivering exceptional service to our clients. We are building a strong operational infrastructure to support our continued growth — and this role sits at the heart of that mission.Key Responsibilities: * Lead and manage strategic ad-hoc projects, ensuring timely delivery and alignment with organisational objectives. * Own and enhance the full end-to-end client onboarding process (Gold, Silver, Bronze clients), ensuring a smooth and professional implementation experience. * Continuously improve the customer journey by working closely with senior stakeholders including the CEO, MD, COO, and heads of key business units. * Drive a variety of project types — from business operational improvements to technology platform rollouts — acting as the central PMO owner. * Anticipate and address potential risks, roadblocks, or opportunities before they arise, applying a proactive mindset. * Collaborate with cross-functional teams (senior management, business units, technical teams, external partners) to ensure successful and cohesive project delivery. * Ensure all tasks are delivered on time, to high quality standards, and in line with company goals. * Identify and implement best-practice project management processes to help the company scale efficiently.What We’re Looking For: * GCSE Maths and English (or equivalent) level 4+; degree-level education (or equivalent experience) preferred. * Proven experience as a Project Manager — ideally in a fast-paced, rapidly growing environment. Experience with client implementations or technology‑based projects is a strong advantage. * Demonstrable track record of delivering multiple projects on time, on budget, and with measurable outcomes. * Excellent communication, interpersonal and stakeholder management skills — capable of engaging and influencing at all levels. * Strong ability to manage multiple projects simultaneously while balancing competing priorities. * A proactive, self‑starting attitude, with a high level of initiative and the ability to work independently when required. * Experience or familiarity with practical project management tools and techniques. We value pragmatic execution over rigid adherence to methodology.Additional Requirements: * Ability to pass baseline security screening (BPSS). * In some cases, Security Check (SC) clearance may be required.Whats in it for you? * A key role in a growing and ambitious company, with plenty of opportunity to shape and influence the client experience and internal processes. * Hybrid working model, your birthday off as an extra holiday (+ 25 days), office attendance bonus, life insurance, company events, free all day cafe. * A chance to lead diverse projects across business operations and technology platforms — broadening your exposure and experience. * A collaborative, supportive culture that values initiative, efficiency, and delivery.About ConstelliaConstellia – Neutral Vendor solutions for Goods, Services, Technology and Works.Established in 2007, Constellia is one of Britain’s fastest-growing private companies (ranked in Sunday Times (Apply online only) & 2025), and a leading Neutral Vendor Managed Service Provider in the UK.We manage over £400 million of spend across 200+ public and private sector organisations. We are also the UK’s only Neutral Vendor to enable public sector and utility client’s access to the procurement of Goods, Works, Services and Technology.As a Neutral Vendor, we act as a conduit between contracting authorities, prequalified suppliers, providing a fast and compliant marketing route via Neutral Vendor Frameworks. Our diverse and dynamic marketplace enlists over 3,000 pre-approved suppliers, providing clients access to 400+ subcategories of spend.We provide public sector clients the flexibility and choice to buy through one simple route quickly and compliantly, helping drive efficiencies, Social Value and savings