English interview phrases for explaining technical work

Short answer

Give the simple version first, then the technical detail. If you do not know something, say what you do know that is close to it. A simple phrase that works: "Think of it like [simple analogy]. In technical terms, this means [explanation]."

Technical interviews, and any time you explain a system, a process or a decision to someone outside your field.

Try these phrases in a practice interview — free — Answer a real question out loud and see how clear it sounds. No card needed.

Why this moment is harder in a second language

Technical vocabulary is often the strongest part of a second-language speaker's English, so the answer becomes a list of terms with no explanation of why.

Simple phrases (B1)

Think of it like [simple analogy]. In technical terms, this means [explanation]. — Explaining a technical concept simply (B1). When: Making complex concepts accessible. Shows you can communicate to non-technical audiences

Everyday professional phrases (B2)

I chose [Option A] over [Option B] because while [Option B] offered [benefit], [Option A] better addressed our primary requirement of [need]. — Trade-off explanation (B2). When: Explaining technical decisions. Shows you can evaluate and decide
I haven't worked directly with [technology], but I'm familiar with [similar technology]. I believe the core concepts are similar, and I'm confident I could learn it quickly. — Unknown answer (B2). When: When asked about something you don't know. Honest but positive. Shows learning ability.

Advanced phrases (C1)

At a high level, the system consists of [component 1], which handles [function], connected to [component 2] via [interface]. The key design decision here was [reasoning], which enables [benefit] but introduces [trade-off]. — Architecture explanation (C1). When: System design or architecture discussions. Structured, comprehensive technical communication

Use them as a starting point

Words in [square brackets] are for your own details. Choose one phrase you can say naturally rather than learning all of them — a phrase you have to remember word by word is harder to say under pressure.

Common questions

What do I say if I don't know the answer to a technical question?

Say honestly that you have not used it, name something similar you have used, and explain how you would learn it.

Do I need advanced English for explaining technical work?

No. The B1 phrases are enough in most interviews. Clear and polite matters more than advanced vocabulary.

All interview English phrases — every situation, from the greeting to the thank-you email
STAR method examples — how to tell a real example in a clear order
Questions to ask in an interview — what to ask at each stage

Practise out loud before the real interview. Try these phrases in a practice interview — free