Preparing in Warsaw for Friday's Coding Interview

Imagine you are a developer in Warsaw with an English-language coding interview on Friday. You can solve the practice problem, but explaining your solution aloud takes longer than writing it. When someone asks about performance, you know the answer in your first language and struggle to find the English words.

Preparing for this situation means practicing two tasks together: solving a technical problem and making your reasoning understandable. You do not need a new accent or a large collection of impressive words. Start with a small set of explanations you can deliver clearly.

The conversation around the code

In a technical interview, an interviewer may ask you to write code, discuss a previous project, or describe the design of a service. Alongside the technical work, expect questions about your decisions: what you assumed, which alternatives you considered, and how you would check the result.

Check the interview invitation before choosing exercises. A live coding session needs different preparation from a conversation about your past work. If the format is unclear, ask the recruiter what activities to expect and whether you can use your usual programming language.

A vocabulary list from one familiar project

Choose a project you understand well. Write down the words you need to describe its purpose, your contribution, one difficult decision, and the result. Keep the list short enough to review in ten minutes.

• For a database change: query, index, duplicate, migration, rollback.
• For an API: request, response, timeout, retry, authentication.
• For a coding exercise: input, output, loop, lookup, memory.

Turn each word into a sentence you might actually say. For example: “We added an index because this query was slow.” Practice explaining the same decision without the specialist word: “We changed how the database finds these records.” That gives you another route when a word disappears.

Four sentences for a coding exercise

Use one small problem, such as finding duplicate values in a list. Before typing, practice four parts of the conversation:

• Confirm the task: “Should I return each duplicate once?”
• Describe the approach: “I will store the values I have already seen.”
• State a tradeoff: “This uses extra memory to avoid checking every pair.”
• Check the result: “I will test an empty list and a list with repeated values.”

Say these sentences while solving the problem. You do not need to narrate every keystroke. Explain the decisions that help another person follow your work, then pause to concentrate when necessary.

Useful phrases when you need more time

Prepare a few recovery phrases before interview day. “Could you repeat the last part?” asks for repetition. “Do you mean the running time or the response time?” checks a specific ambiguity. “Let me think through that example” gives you a clear way to pause.

If you cannot remember a term, describe the operation. You might say, “the structure that stores keys and values,” then continue. If you misunderstand a question, briefly restate your new understanding before answering. Avoid building a long answer on an uncertain assumption.

A twenty-minute practice session

Spend five minutes explaining your chosen project, ten minutes solving a small problem aloud, and five minutes reviewing a recording. Listen for places where the listener would lose your meaning: an unexplained assumption, an unfinished sentence, or a decision you never described.

An AI conversation can supply follow-up questions. Try: “Act as a technical interviewer. Ask one question at a time about this project. After my answer, suggest one clearer sentence and identify one technical point I left unclear.” Use an invented project summary or remove confidential details.

For repeated practice, RelayVano is a useful option if you already use a compatible developer tool: its pay-as-you-go access lets you budget short sessions without committing to a subscription. Sign up, set a small practice budget, and reuse the same interview prompt so you can compare your answers.

The hour before Friday's interview

Review your project story, recovery phrases, and a few test cases. Check your microphone and coding environment. Then stop rehearsing. During the interview, ask clear questions, explain one decision at a time, and leave yourself room to think.