About Mockly
Mockly is run by two UK-based data engineers who also teach English to tech professionals (BSc Mathematics, British English, 8+ years teaching each). We coach tech interview English and business English for tech roles — because the usual advice treats English as a language problem, when it is also a technical-communication problem.
- Based
- United Kingdom
- Coaches
- Tom and Sophie — practising data engineers and English coaches
- Lessons delivered
- 1,840+ (Tom) · 920+ (Sophie)
- Rating
- 4.9 / 5 from 7 published reviews
- Coaching
- Interview English + business English for tech · from $50 · free trial
- Who it is for
- Non-native tech professionals — interviews and workplace English
Everything here - the guides, the articles, and the mock sessions - is written by people who sit on both sides of that problem: we work as engineers, and we teach English for a living.
Mockly English is a product of Speak Tech Eng Ltd, a company registered in England and Wales (company no. 16104904).
Tom O.
Data Engineer & English Coach
- BSc Mathematics
- British · UK-based
- 1,840+ lessons delivered
Tom is a practising data engineer in the UK with 8+ years teaching English to tech professionals. He coaches tech interview English — narrating a system design diagram out loud, structuring a STAR answer so the result lands, senior ownership stories — and business English for tech roles on the job. He writes most of the system design and behavioural material on this site.
Coaches
- · Technical English for system design rounds
- · STAR-based behavioural preparation
- · Business English for tech professionals
- · Storytelling for senior and staff-level roles
Sophie F.
Data Engineer & English Coach
- BSc Mathematics
- British · UK-based
- 920+ lessons delivered
Sophie is a practising data engineer in the UK with 8+ years teaching English to tech professionals. She works on fluency under pressure — the tone, pacing, and confidence that decide how a technically correct answer sounds to a British or American panel — in interviews and in business English at work.
Coaches
- · British English fluency under interview pressure
- · Behavioural and leadership round coaching
- · Business English for tech professionals
- · Tone, pacing, and confidence for non-native speakers
What people say about the coaching
Across published reviews, engineers consistently highlight three things: coaches who pair language teaching with real experience in the IT industry, preparation that covers behavioural, algorithm, and system design rounds rather than English in isolation, and tangible outcomes - several reviewers report passing interviews and accepting offers after coaching. Reviewers also mention practical extras such as CV and cover-letter feedback, and describe the coaching as tailored to their specific weak points rather than a fixed curriculum.
Read the full reviewsHow we write what's on this site
Every guide and article comes from sessions we've actually run. When we write that a phrase fails in a system design round, it's because we've heard it fail. We update posts when the advice changes rather than leaving stale pages up, and each article carries a Quick Answer at the top so you can get the short version without reading the whole thing.