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:

  • Two black chess pawns, one standing upright and the other lying on its side, on a plain white background.

    Strategy

    We help you define, refine, and achieve your strategic goals with clarity and impact — all through a truly international perspective. Whether you're pivoting, accelerating growth, or expanding internationally, we build a concrete and measurable roadmap that delivers tangible results.

  • A close-up of four black binders with colorful tab labels on a white background.

    Investor Documents & Strategic Agreements

    Investor presentations and shareholder agreements can vary widely from one country to another. We help you understand the structure and practices behind the documents you work with.

  • A statue of Lady Justice holding scales in her right hand and a sword in her left, standing on a decorated column against a clear blue sky.

    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.

  • A laptop, printed financial charts, and a glass of water on a black desk.

    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.

  • Close-up of a book titled 'Brand' with a yellow spine that has the phrase 'REDEFINE YOUR BRAND' printed in black.

    Corporate Communication & Brand Identity

    Your brand should resonate world wide. We help craft messaging and positioning strategies that build credibility, consistency, and connection in any market.

  • A person sitting at a table filling out a health insurance form with a pen, with a coffee cup nearby.

    Human Resources

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

  • Red shopping bag with red ribbon handles on a tiled floor, illuminated by sunlight.

    Sales & Marketing

    We help you develop clear, effective strategies to reach international markets. We work with you to showcase your offering and build trusted relationships with global audiences.

  • Disassembled smartphone components laid out on a white surface, including circuit boards, connectors, and camera modules.

    Technical Communication & Collaboration

    We work with technical teams — including data scientists and architects — to communicate clearly about complex projects and facilitate communication between technical experts and corporate decision-makers.

Meet the Team

A woman with short blonde hair, wearing a black blazer, pearl necklace, and gold bracelet, smiling outdoors near a brick building.

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.

Person with short blonde hair wearing a dark button-up shirt and patterned pants, posing against a black background.

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.”