On this page

Case studies

By Mockly English · Last updated:

How a Russian-Speaking Engineer Prepped for a Big Tech Interview

The CV shows the work. The interview asks you to explain it in English, live, without stopping to translate. He was a product manager in Germany. The gap was vocabulary & pronunciation — not the technical content.

At a glance

RoleProduct Manager
LocationGermany
English challengevocabulary & pronunciation
Interview problemInterview English
Targeta global product interview
Preparation~8 weeks
OutcomeGained clearer, more confident English for interviews
7-Day Free Trial

Land your dream tech job. In English.

Practice technical, behavioral & system design interviews with interactive lessons and native-speaking coaches

Start freeNo card needed
MemberMemberMember

500+ tech pros preparing for global roles

Courses · Coaching · Mock Interviews

The Gap Between Knowing and Explaining

The CV shows the work. The interview asks you to explain it in English, live, without stopping to translate. He was a product manager in Germany. The team often spoke Russian, so live English was not daily practice. In the room, vocabulary & pronunciation was what broke down.

Then vs Now

Before coaching

  • Reached for words mid-answer and translated from a first language

After coaching

  • Retrieved a small set of precise terms instead of long approximations

What We Worked On

Practice matched the round he actually had to speak: vocabulary & pronunciation. Each mock got notes on the same answer — where he paused, which words were vague, and where the structure broke.

  • Replaced vague verbs with the words interviewers actually hear (latency, trade-off, shipped)
  • Practised saying numbers, metrics, and product names until they were clear
  • Built a short retrieval list for this role — not a general vocabulary course
  • Repeated the same explanation until the terms came without translating

Useful references along the way: STAR interview framework, Pronouncing numbers and metrics.

What to Practise

  • Write the 20 terms you will actually say in this round. Practise them in full sentences.
  • Say numbers and names out loud until they are clear without slowing down.
  • Stop translating. If the precise word is missing, use a short definition and move on.
  • Record one answer and listen only for searches and approximations.

The Difference

Gained clearer, more confident English for interviews. He could explain the work more clearly when questions got hard. That readiness was the goal — not a promised job offer.

Why Vocabulary Breaks Interviews in English

You can know the work and still lose the round while searching for a word. Interviewers follow a sequence. Long pauses and vague verbs make strong engineering sound unfinished. A small, practised set of role terms is more useful than a general vocabulary list.

Preparing for a similar path? Read How a German PM Prepped for Revolut's Behavioral Interviews.

Starting Point

He prepared for English-language interviews as a product manager. Homework between classes locked in phrases. Written English was stronger than speaking under the clock.

Session snapshot

Prep timeline~8 weeks
FocusInterview English

Frequently Asked Questions

What English should a product manager learn for interviews?

The language of the round you will face — here, vocabulary & pronunciation. Learn full sentences for that format, not a general business-English course.

Do I need to sound like a native speaker?

No. Clarity and structure are the bar. A small accent is fine if they can follow your decisions and numbers.

How do you prepare for a product manager interview in English?

Practise the real format out loud, especially vocabulary & pronunciation. Get notes on pauses and vague wording after each mock — not only on the technical content.

How long does it take to feel ready as a product manager?

This plan ran about ~8 weeks. Keep mocks weekly so the structure stays automatic.

Practise the vocabulary you will actually say in the interview

No card required. Start with a 7-day free trial — a lesson, a mock interview, or both.

Create your Mockly account →