Marie Sierra

Available to hire

provide soft, calm, and comforting voice overs designed to create a warm and relaxing listening experience.

About

provide soft, calm, and comforting voice overs designed to create a warm and relaxing listening experience.
I can bring a gentle and natural tone to:
• Audiobooks
• Sleep stories
• Meditation & wellness content
• E-learning
• Podcasts
• Narration
• Explainer videos
• Intros & outros
• And more
My focus is delivering clear, high-quality audio with a soothing and authentic voice that connects naturally with listeners.
Feel free to listen to my demo below, and if my voice fits your project, I’d love to work with you.

  • Joined May 2026

Languages

  • FrenchFluent
  • Spanish; CastilianAdvanced
  • EnglishAdvanced
  • PortugueseIntermediate

Industry experience

  • Media & Entertainment
  • Telecommunications
  • Other
  • Healthcare
  • Manufacturing
  • Education
  • Retail
  • Professional Services

Projects · 4

I provide soft, calm, and comforting voice overs designed to create a warm and relaxing listening experience. I can bring a gentle and natural tone to: • Audiobooks • Sleep stories • Meditation & wellness content • E-learning • Podcasts • Narration • Explainer videos • Intros & outros • And more My focus is delivering clear, high-quality audio with a soothing and authentic voice that connects naturally with listeners. Feel free to listen to my demo below, and if my voice fits your project, I’d love to work with you.

  • Content Creator
  • Voice Actor
  • Voiceover Artist

provide soft, calm, and comforting voice overs designed to create a warm and relaxing listening experience. I can bring a gentle and natural tone to: • Audiobooks • Sleep stories • Meditation & wellness content • E-learning • Podcasts • Narration • Explainer videos • Intros & outros • And more My focus is delivering clear, high-quality audio with a soothing and authentic voice that connects naturally with listeners. Feel free to listen to my demo below, and if my voice fits your project, I’d love to work with you.

  • Content Creator
  • Voice Actor
  • Voiceover Artist

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. #video #voiceover #narration #frenchaccent #voiceoff

  • Voice Actor
  • Voiceover Artist

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.

Work experience· 9 roles

Coordinateur de greffe / Case Manager · Agence de la BiomédecineOct 2014 – Jan 2022 · 7 yrs 4 mos

Coordinateur de greffe et cas manager; gestion des dossiers patients, coordination des activités liées aux greffes et à la transplantation, liaison entre équipes médicales et partenaires institutionnels.

International case manager · agence de la biomédecineOct 2014 – Jan 2022 · 7 yrs 4 mos

Liaised between transplant centers, donor centers, and registries in France and internationally. Managed patient registrations, donor searches, recruitment, and graft transport logistics in compliance with established procedures. Prepared transport documentation including ANSM authorizations, court approvals, donor insurance, customs clearance, blood sample shipments, and delivery scheduling. Verified medical information in coordination with physicians (infectious disease markers, compatibility data, etc.). Translated anonymous correspondence between patients and donors. Monitored patient files, including quality control, dispute resolution, and logistical issue management. Trained hematopoietic stem cell (HSC) graft transport providers. Coordinated clinical research protocol activities (DLI Boost, Cryostem, Predictor, Reg Allo).

Purchasing and logistics assistant · Shop HairMay 2014 – Sep 2014 · 5 mos

Suivi des commandes, gestion des stocks, élaboration et gestion des plannings fournisseurs, coordination avec les transitaires pour l'import, tenue des dossiers d'achats et envois.

Business Developer · The International Student CompanyOct 2013 – Feb 2014 · 5 mos
Production Assistant and Office Manager Assistant · Anatomie WearFeb 2013 – Mar 2014 · 1 yr 2 mos
Marketing Assistant and Assistant in International Relations · Trident Analytical SolutionsMay 2012 – Aug 2012 · 4 mos
Assistant in Back Office · Crédit AgricoleApr 2010 – Jun 2010 · 3 mos
Salesperson Assistant · Metro Cash and CarryMay 2009 – May 2009 · 1 mo

Education· 6

Master international management · Université Paris XII2011 – 2013
Licenciatura comercio y gestion · Universidad Politecnica de Cartagena2010 – 2011
DUT techniques de commercialisation · Université Paris Descartes V2008 – 2010
Master in International Management (Trilingual) · Université Paris - Val-de-Marne (Paris XII)2011 – 2013

Certifications and awards

Camp Leader Certificate2008

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