About Us

At 5th Floor Consultancy, we help French and European companies communicate with clarity and confidence on the international stage.

Whether you're preparing for a funding round, entering a new market, or fine-tuning high-level investor materials, we combine language precision with business insight to help you reach your goals. Our team brings experience from fast-paced startup environments as well as major corporate projects involving strategic documentation and investor-facing communications.

A group of four professionals in a meeting room working on laptops and discussing documents, with charts and graphs on the screens.

What we do

Analyse your current position and business goals.

Plan a strategy tailored to your needs, broken down into key work blocks.

Deliver tools, guidance, and expert support to bring your international ambitions to life.

Discover our services

Our 360° insight

Our approach is comprehensive, cross-disciplinary, and always tailored to where you are and where you want to go. From early-stage startups to established firms ready to scale, we provide the insight, structure, and cross-cultural communication tools you need to succeed on the global stage.

We work with you across the full business spectrum:

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    Strategy

    We help you define, refine, and execute your business goals with clarity and impact — all through an international lens. Whether you're pivoting, scaling, or expanding abroad, we develop a roadmap that gets results.

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    Investor Documents & Strategic Agreements

    Investor decks and shareholder agreements can vary significantly from one country to another. We help you make sense of the structure and norms behind the documents you're working with.

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    Compliance & Risk Management

    With experience in regulatory environments, we review your English-language materials for clarity, tone, and alignment with international expectations. Because compliance jargon doesn’t always translate, we help ensure your message is understood the way it needs to be.

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    Audit & Quality Control Readiness

    Our support helps you communicate confidently and effectively during audits and inspections—whether guiding auditors or clients through your manufacturing process. We prepare you to deliver clear explanations in English and respond to questions in real time.

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    Corporate Communication & Brand Identity

    Your brand needs to resonate across cultures. We help craft messaging and positioning strategies that build credibility, consistency, and connection in any market.

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    Human Resources

    We help you engage and retain talent across borders. From internal communication to leadership development, we ensure your people grow with your vision.

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    Sales & Marketing

    We guide you in crafting clear, effective strategies to reach international markets. Our support helps you communicate your value and connect with global audiences confidently.

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    Technical Communication & Collaboration

    We work with tech teams—including data scientists and architects—to communicate complex projects clearly, bridging the gap between technical experts and business decision-makers.

Meet the Team

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Teri Jansen 

FOUNDER -EXECUTIVE CONSULTANT

With an energetic and entrepreneurial “can-do” American mindset, professional experience in New York and London, and a base in Paris, I bring a unique perspective on how to succeed in English-speaking business environments.

“My goal is to build connections between great ideas to the international stage.”

    • Holds a B.S. in Psychology specializing in Industrial Organization from the University of Illinois

    • TEFL Certified

    • Originated residential mortgages at The Royal Bank of Canada (Chicago)

    • Specialized in investor relations and marketing for hedge funds in New York

    • Worked as an independent consultant in Luxury Brand Strategy and E-Commerce in London

  • Teri applies her expertise in business development, brand strategy, digital commerce, and investor relations to help organizations grow sustainably and strengthen stakeholder trust. Drawing on her experience in compliance and risk management, she supports clients in developing strategies to re-inforce market presence, attract investment, and navigate complex regulatory environments.

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PUBLIC SPEAKING AND PRESENTATION SPECIALIST

Katie Jackson (They/Them)

My approach is collaborative and personalized. I use vocal techniques, movement exercises, and presentation strategies to help my clients express themselves with clarity, confidence, and conviction, while also developing their English communication skills.

    • TEFL-certified vocal and performance coach

    • Experienced director and dramaturg in London

    • Trained in stage management at the Royal Academy of Dramatic Arts (RADA)

    • Experience in London’s West End and collaborated with renowned actors such as Sheila Hancock and Simon Callow.

    • Studied directing at the Royal Conservatoire of Scotland, where she deepened her expertise in voice, movement, and theatrical direction

  • Katie specializes in public speaking, presentation skills, and spoken English fluency, drawing on her theatre training to enhance vocal presence, confidence, and performance impact. She equips clients with the tools to communicate effectively and assertively in English.

“Assert your voice. Embody your leadership in English.”