Built for engineers who
think in data, speak in code

The problem we solve

Most data engineers, backend developers and architects are highly competent technically. They understand distributed systems, write clean SQL and can design a medallion architecture in their sleep. But when it comes to talking about their work in English — explaining trade-offs to a non-technical stakeholder, answering a behavioural interview question, or presenting at an architecture review — the words don't come as naturally as the code.

Traditional language apps teach tourist phrases. Language tutors are expensive and hard to schedule. Neither gives you real practice in the exact professional contexts you need.

How MentorVoice works

You pick a scenario — a job interview, an architecture discussion, an HR behavioural question — choose your English level (B1 to C2) and start speaking. An AI coach plays the role of interviewer or colleague, responds naturally, and after each turn gives you:

• Grammar corrections — what you said, the correct form, and why
• Pronunciation feedback — scored and broken down by word (Azure Speech)
• Vocabulary coaching — better word choices with example sentences
• Sentence upgrades — a more natural or advanced version of what you said

The whole loop — speak, get feedback, try again — takes seconds, not days. You can practice as many times as you want, at any hour, without feeling judged.

Who uses MentorVoice

• Data engineers preparing for technical interviews at international companies
• Software architects who present system design to English-speaking stakeholders
• Backend developers joining remote teams where English is the working language
• Technical leads who want to sound more fluent and confident in meetings

Most users are at B2–C1 level — technically proficient in English but wanting to close the gap between understanding and speaking naturally under pressure.

The technology

MentorVoice is built on top of Azure Speech Services for pronunciation assessment, Azure OpenAI for conversation and coaching, and a spaced-repetition engine that tracks your vocabulary and grammar patterns over time. Sessions are voice-first, run in the browser and work on both desktop and mobile.