Elite English coaching backed by 25+ years of real business expertise — deep industry knowledge, an anthropologist's understanding of culture, and a proven track record across borders.
Most English courses teach grammar. zClass teaches professionals how to communicate, negotiate, and lead — in the language of global business.
With technical knowledge spanning steel, mining, finance, M&A, pharma, GRC, environmental and over ten other sectors, coaching goes far beyond language — it addresses the real communication challenges of your industry.
From boardroom presentations to cross-border negotiations, students leave with the confidence to perform at their highest level — in English, under pressure.
Grounded in anthropology and cross-cultural communication, every program is designed with business outcomes in mind. Better cultural and linguistic fluency drives stronger relationships, sharper decisions, and measurable results across borders.
I'm Zach Mignone Cheibub — expert interpreter, translator, and corporate Business English coach with over 25 years of teaching experience. My work lives at the intersection of language, culture, and real business performance.
With a strong educational background in anthropology and a career built inside some of the world's most demanding industries, I bring genuine technical depth to every session. From steel and mining to mergers & acquisitions, pharmaceuticals, governance risk & compliance (GRC), environmental, supply chain, finance and over ten others — I understand the terminology, the pressures, and the communication stakes of each sector.
I design programs for high-achieving professionals and corporate teams who need more than grammar — they need a cross-cultural strategist and expert communicator in their corner.
Sector Experience
Each program is built around real business outcomes — designed for executives, corporate teams, and ambitious professionals who compete globally.
Personalized 1:1 sessions for high-level professionals. Strategic messaging, executive presence, negotiation language, and cross-cultural fluency — tailored to your industry.
Enquire →Structured Business English programs for teams. From international presentations and high-stakes emails to negotiations and cross-border collaboration. Fully customized to your company's needs.
Request a Proposal →Intensive English immersion programs for accelerated results. Designed for professionals preparing for international roles, relocations, or high-visibility projects.
Learn More →Weekly structured debates that sharpen argumentation, critical thinking, and confident spoken English. Challenging, dynamic, and highly effective for senior professionals.
Join →Expert EN ↔ PT interpretation and translation for business meetings, international events, and corporate documents. Precise, contextually aware, and sector-fluent.
Get a Quote →Curated on-demand video lessons for Business English skills — learn at your pace, aligned with your schedule and professional goals.
Browse Classes →Videos, podcasts and reads selected for professionals who want to think sharper, communicate better, and stay ahead.
Whether you're an executive looking for personal coaching or a company building a team language program — let's find the right solution together.