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Implementation Manager I - Poland & CEE

Mollie - Warsaw, Poland - In-office - posted 2026-09-25

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Mollie is a European payments and money management platform serving 250,000+ businesses across 14+ locations. This is a newly formed Implementation Manager role expanding into Poland and Central/Eastern Europe markets. You will own the post-sales integration phase for Mollie's largest and most complex deals, acting as the central point of contact from contract signature through go-live and handover. Your responsibilities include: - Owning the complete post-sales integration lifecycle for high-value, complex implementations - Running kickoff meetings with internal and external stakeholders to establish go-live dates and track progress - Organizing and tracking testing phases, surfacing issues and feedback as they emerge - Coordinating across sales, product, engineering, onboarding, and compliance teams, as well as directly with merchants and digital agencies - Maintaining agreed go-live dates to ensure revenue targets are met - Building and maintaining documentation and playbooks to make delivery predictable and scalable - Keeping merchants and internal stakeholders informed with regular progress updates - Identifying and escalating timeline risks early This is a high-impact role with genuine influence over how the function and its processes develop. You'll work in a flat, collaborative team where good practices are shared across all levels. Mollie emphasizes autonomy, craft, and long-term thinking. The company provides tools, reliable processes, and a balanced work environment. Growth is personal—regular feedback, transparent salary reviews, and opportunities to move into new roles or projects are standard. REQUIREMENTS: - Minimum 3 years of relevant experience in implementation, project management, onboarding, delivery, or similar customer-facing role - Fluent in Polish and English - Proven experience managing complex implementations from contract signature through go-live and handover - Solid understanding of APIs, integrations, and technical documentation; ability to investigate implementation issues and collaborate with technical teams - Strong project and stakeholder management skills: managing timelines, blockers, dependencies, and multiple internal/external stakeholders - Structured, proactive, pragmatic approach with strong ownership and confidence to challenge when needed - Experience in payments, fintech, or e-commerce is a plus

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