About Sonio

Each year, 140M children are born. Birth defects affect 1 in 33 births in developed countries, and in 50% of cases, they are not detected during prenatal examinations. Prenatal medicine is particularly complex, and the scans impose heavy responsibilities on healthcare professionals. They can also be a source of stress for future parents.

Resulting from 5 years of collaboration between world-renowned experts from Necker Hospital and Ecole Polytechnique, Sonio uses artificial intelligence to improve prenatal screening and diagnosis. Based on patented algorithms and a proprietary expert database, Sonio aims to become the reference tool to help practitioners improve screening, reduce diagnostic errors, and optimize pregnant women’s medical path.

Sonio's mission is to improve women's and children's health by promoting access and quality of care through technological innovation, medical expertise, and collective intelligence.

About the role

As Chief of Staff Intern, you will work directly with our Chief of Staff, Finance and Executive team on a wide range of strategic and cross-functional initiatives. This internship is a unique opportunity to gain a 360° view of how a mission-driven, fast-growing company operates and makes decisions.

You’ll play a key role in three major areas:

🚀 Company Strategy, Finance & Governance

• Prepare strategic materials for key stakeholders (e.g., board meetings, investor updates, reporting).

• Support strategy definition w/ financial insights enabling profitability-driven decision making.

• Contribute to the internal strategic planning and financial projections processes: business plan, OKRs, company-wide meetings and rituals.

🌍 Impact Strategy

• Help design and develop impact-focused initiatives, especially in collaboration with African universities and social business partners.

• Build and structure meaningful partnerships and identify practical opportunities to deliver impact aligned with the company’s mission.

🤝 Cross-functional Initiatives

• Contribute to improving ****financial monitoring and processes, impacting all company’s teams and activities.

• Carry out in-depth market studies and business case requiring cross-team insights and collaboration.

• Relationship management with professional and regulatory organizations.

Sonio is a mission-driven company so interest in our mission is critical. Other requirements are:

• Currently pursuing a Master's degree (gap year or final year) in business, strategy or finance with previous experience of a 6-month internship.

• You are able to understand and synthesize complex environments and strategic topics, w/ an ability to step back on your analysis.

• Strong analytical skills and data-driven mindset — you're comfortable using Excel and building complex models to make sense of intricate topics.

• Proficient in PowerPoint — you know how to present ideas clearly and convincingly, as well as how to structure a narrative around a specific business topic.

• Curious, adaptable, and truly impact-driven.

• Autonomous, proactive, and not afraid to take initiatives.

• Fluent in English (written and spoken).

Why Join Us?

• Work closely with top-level leadership in a company at the intersection of tech, healthcare, and social impact.

• Contribute to high-stakes decisions while developing strategic and operational skills.

• Be part of a passionate, international, and mission-oriented team.

• Learn fast, take ownership, and make a real difference.

Start date: January/February 2026

Location: Paris

We move fast and aspire to be transparent over the process - our objective is that the process from the first chat to an offer is no longer than a month. We also aspire to give an answer to every application in a week - if you have not heard from us, please follow up at careers@sonio.ai.