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Marie SierraMS

Marie Sierra

French voice-over

€150/day
Lieusaint, FR
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Marie

I offer soft, calm, and comforting voice-overs, designed to create a warm and soothing listening experience.

I can provide a natural and reassuring tone for:

Audiobooks
Sleep stories
Meditation and wellness content
E-learning
Podcasts
Narration
Explainer videos
And much more

My goal is to deliver clear, high-quality audio with an authentic and soothing voice that creates a natural connection with listeners.

Feel free to listen to my demo below, and if my voice fits your project, it would be a pleasure to collaborate with you.
  • French

    Native or bilingual

  • Spanish

    Native or bilingual

  • English

    Fluent

  • Portuguese

    Conversational

Remote only
Primarily works remotely

Experience

  • Soft tempo lounge
    Voice over
    FILM AND AV
    March 2026 - May 2026 (2 months)
    Paris, France
    This project involved recording a voice narration for a music show titled Soft Tempo Lounge. The client provided a structured script including an introduction, mid-show segments, and a closing segment.
    The narration was delivered in a soft, calm, and engaging tone to match the relaxed atmosphere of the program and support the musical flow throughout the show.
    In addition to the English narration, I was also required to naturally incorporate occasional French words within the script to create a more intimate connection with the audience and add a subtle sense of authenticity and warmth.
    My focus was on maintaining a smooth pacing, clear diction, and a soothing delivery style to enhance the overall listening experience from start to finish.
    voice over Female voice over Voice French female voice over Narration
  • Marisis
    Trainer for Datlin, training center for adults
    January 2022 - Today (4 years and 5 months)
    I work freelance in 100% video conferencing for levels ranging from A0 to B2. I use interactive online tools to guide trainees in their learning.
  • Agence de la Biomédecine,
    International Coordinator of HSCG transplant
    October 2014 - January 2022 (7 years and 3 months)
    Saint-Denis, France
    • Interface between transplant centers, donor centers, and registries in France and abroad.
    • Manage patient registrations, searches, recruitment, and graft transportation logistics in compliance with procedures.
    • Preparation of transport files: ANSM, TGI, and donor insurance authorizations, customs, sending blood samples/pre-grafts, delivery planning.
    • Validation of medical information in agreement with doctors (infectious markers, etc.)
    • Translation of anonymous correspondence between patients and donors
    • Patient file follow-up: quality control, dispute management, and logistical problems.
    • Training of HSCG graft transporters - Management of clinical research protocols (DLI Boost, Cryostem, Predictor, Reg Allo).

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Education

  • Master of Management
    Université Paris XII Est
    2013
    Master 2 Management international trilingue – Mention bien
  • Business and Management Degree
    Universidad Politecnica de Cartagena,
    2011
    Licence commerce et gestion

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