Corporate English·AI Fluency

The English that gets you promoted — and gets more from your AI.

Two things are now decided by your English: whether you get the room, and whether your AI delivers. English4B2B is practice-first, built for Portuguese-speaking professionals who need both.

See the courses
The Method

Practice, not lessons.

English4B2B is not another conversation app, and not a school. Each course is a focused practice tool — built around the English moments your career turns on.

i.

Specific situations

Every drill is drawn from the English that corporate and international work actually requires — meeting status updates, presentation Q&A, interview questions, AI prompts — not textbook dialogues about restaurants and weather.

ii.

AI-native feedback

You speak or write a response. The AI returns commentary specific enough to act on — clarity, register, word choice, structure — within seconds, not days. Repeat until the pattern holds.

iii.

Self-paced. Lifetime access.

Buy a course once; come back whenever the next high-stakes moment is on your calendar. No cohort dates. No waitlists. The tool waits for you, not the other way around.

The Courses

Three focused tools, built around the moments your career turns on.

Each course is self-contained, self-paced, and yours for life. Buy one, or stack them as a ladder.

Course I

AI English

For the professional whose AI outputs are generic, whose prompts aren't landing, and who suspects the language is part of the problem.

~5 hours · 20 AI-native drills · Lifetime access
  • Prompt in English and get measurably better outputs from any AI tool
  • Tune AI responses to your voice and professional register
  • The specific vocabulary and syntax that makes AI work harder for you
  • Why English prompts outperform — and how to make that your edge at work
US$49
Self-paced · Instant access
Get AI English
Course II

Meeting & Presentation English

For the status update that goes flat, the briefing deck that got rewritten by someone else, the follow-up questions you weren't ready for.

~8 hours · 30 AI-native drills · Lifetime access
  • Status updates that sound like the person leading, not the person reporting
  • Opening a briefing so the senior audience leans in — not tunes out
  • Executive-summary register — the one-paragraph version of anything
  • Handling hostile follow-ups, Q&A, and executive interruptions
  • AI feedback on clarity, register, pacing, and hesitation markers
US$59
Self-paced · Instant access
Get Meeting & Presentation English
Course III

Interview English

For the international interview, the internal promotion conversation, the moment the English has to hold under pressure.

Unlimited simulator runs · 30+ behavioral prompts · Lifetime access
  • AI interview simulator — behavioral, technical, and executive-facing prompts
  • Per-answer feedback on structure, specificity, and senior register
  • Tell-me-about-a-time answers that sound like leadership, not rehearsal
  • Compensation and offer conversations — the English of the last five minutes
US$79
Self-paced · Instant access
Get Interview English
Marcio, founder of English4B2B
Marcio — Founder, English4B2B
About

Built from inside the rooms where corporate English is actually used.

I studied business strategy at Harvard Business School, built a marketing agency, and work in Global Sales at Delta Air Lines on Strategic Global Sales Programs — the English of board reviews, international partner meetings, and cross-border negotiation is the English I use every week.

The people whose careers moved fastest around me were not always the best English speakers — but they were the ones whose English held up in the rooms that mattered. And increasingly, they are the ones who know how to work with AI in English.

I grew up between Portuguese and English, am fluent in Spanish, and hold a B1 certification in Italian from the University of Parma. I designed English4B2B for the Portuguese-speaking professionals I know well, because I am one.

Business Strategy · Harvard Business School Delta Air Lines · Global Sales Fluent · EN · PT · ES Italian B1 · University of Parma
Follow Marcio on LinkedIn
Questions

Common questions, answered directly.

What level of English do I need?
Intermediate to advanced. These are practice tools for professionals already working in English who want the language to hold up in higher-stakes moments — not a beginner course.
How is this different from ChatGPT or a conversation app?
The drills, prompts, and feedback rubrics are the product. Every exercise is built around a specific corporate moment, and the AI is instructed to evaluate the answer the way a senior colleague would — not as a friendly chat partner. You get pattern-level feedback, not just a reply.
In what language is the material?
In English, with Portuguese notes where useful. The objective is to think and work in English; Portuguese is there to shorten the bridge, not to live on.
How does access work?
Buy a course once, come back whenever you need it. Lifetime access to the drills, simulator, and any future additions to that course. No subscription, no renewal.
Is there a company / team option?
Yes. For teams of six or more, English4B2B runs private workshops with curriculum tailored to the company's sector and stage. Contact directly to discuss.
Begin

Start with the course your next week needs.

Meeting, presentation, interview, or AI English — each course is $49–$79, instant access, yours for life. Follow on LinkedIn for free tips and new releases.

Follow English4B2B on LinkedIn for free tips