Mission freelance Implementation Lead (Payment Acceptance)

Location: Paris but Madrid or Milan is accepted.
The consultant must speak French, English, and either Italian or Spanish.
🏠 Hybrid model: on‑site presence required at the beginning, then 2-3 days of remote work per week after 3 months.
📄 Contract: Freelance or umbrella company (no subcontracting). The mission may lead to a permanent position (CDI), so the consultant must be open to considering a full‑time role after several months of collaboration.

Context

An international payments provider is strengthening its implementation team dedicated to payment acceptance flows. The team intervenes after contract signature to support merchants in integrating e‑commerce and terminal solutions, with a strong technical dimension and significant client interaction.

To support the growing volume of European projects, the company is looking for an Implementation Lead with strong expertise in payment acceptance and who, in addition to English, speaks either Italian or Spanish to communicate effectively with clients.

Important: A solid background in payment acceptance flows is mandatory.

Role

The Implementation Lead is responsible for the end‑to‑end implementation of payment acceptance solutions, overseeing technical integrations post‑signature and coordinating all stakeholders.

The role combines:

• Project management (Agile / Scrum / SAFe)
• Client relationship
• Technical analysis (APIs, payment flows, logs)
• Cross‑functional coordination with internal teams (tech, product, QA, etc.)

Responsibilities

• Take ownership of implementation projects after contract signature.
• Manage all topics related to payment acceptance (e‑commerce and terminals).
• Analyze and understand APIs, authorization flows, logs, and technical reports.
• Manage several projects in parallel across different countries.
• Coordinate interactions between merchants, technical teams, QA, and product.
• Ensure high‑quality functional and technical integration.
• Participate in agile ceremonies with international teams.

Required Profile

Mandatory skills

• At least 5 years of project management experience.
• Very strong knowledge of payment acceptance.
• Experience in technical environments: APIs, logs, payment flows.
• Strong communication skills and ability to simplify technical topics.
• Experience in client onboarding / functional coordination.
• Proficiency in one of the following language combinations:
• French + English + Italian
• French + English + Spanish
• Former engineer, QA, or developer who moved into project management.
• Experience with a payment acceptance provider (Ingenico, Worldline, AxIS, PSP, etc.).
• High autonomy, analytical mindset, strong client‑service orientation.
• Comfortable with international projects and multiple stakeholders.