System design interview prep: most engineers lose the loop on one thing they can't see.
I run a timed system design mock, score it the way a real hiring loop does, and tell you what that thing was. In English or Ukrainian.
- Round
- System design mock
- Length
- 60 minutes
“You never sized the write path. That is the one that loses offers.”
An example, not a real candidate. Yours arrives in writing within a day of the session.
Two tracks
Pick the one that matches what you are facing. Both run one-to-one, in English or Ukrainian, at the same price.
Track A — AWS certification coaching
AWS exam prep for engineers sitting any AWS certification, Cloud Practitioner through Professional and Specialty.
- A gap assessment against the official exam guide
- A study plan built around the domains you are weakest in
- Whiteboard drills on those domains
- Exam-technique practice: timing, elimination, question traps
I hold 14 active AWS certifications.
Track B — Architecture and system-design interview coaching
For candidates facing solutions-architect, cloud-engineer or senior-engineer loops.
- A timed mock system-design or architecture interview
- A written scorecard against the signals interviewers actually grade
- Targeted follow-up drills on the weak signals
14 years of interviewing and hiring across EPAM and enterprise clients.
English or Ukrainian. Both tracks run in English or Ukrainian. Pick your language when you book — it changes nothing about the price or the content.
How a session works
Step 1 of 3
Book a slot
Pick an evening or weekend slot and tell me which track and which exam or role.
Step 2 of 3
The session
60 minutes live. Track A drills your weak domains; Track B is a timed mock interview.
Step 3 of 3
Written notes
You get notes and a scorecard afterwards, with what to work on before the next session.
Fees
Sessions are prepaid. Packs include async questions between sessions, so you are not saving up your questions for the next call.
| Package | What you get | Price |
|---|---|---|
| Single session | 60-minute live call plus written notes. | €90 incl. VATPay and book |
| 3-session pack | Three 60-minute calls, plus async questions between sessions for four weeks. | €240 incl. VATPay and book |
| 6-session pack | Six 60-minute calls, async questions for eight weeks, and one final mock. | €450 incl. VATPay and book |
Price includes VAT.
When I run sessions
Sessions run weekday evenings (18:30–21:30 CET) and weekends. I do not offer weekday daytime slots.
What I don't take on
- I do not work with my employer, with any company in its group, or with their competitors, suppliers and business partners.
- I use no employer information, tools, equipment or materials, and I work only outside my working hours. All benchmarks come from public sources and your own data.
- I do not coach or mentor colleagues from my employer or its group, and I do not coach candidates for roles there or discuss any employer's internal hiring process.
- I do not coach or mentor employees of my employer's competitors.
- I do not use or share any material from my employer.
Book a session
Booking form not loading? Open it in a new tab or email me directly.
Questions
Which AWS certifications do you coach?
Every level, from Cloud Practitioner up to the Professional and Specialty exams. I hold 14 active AWS certifications across all four levels.
Read: the AWS certification path, level by levelHow much does an AWS certification exam cost?
AWS lists its exam fees in US dollars: $100 for a Foundational exam, $150 for Associate, and $300 for Professional or Specialty. Once you are certified, AWS gives you a 50% discount voucher for your next exam or a recertification. My coaching fee is separate and does not include the exam.
AWS exam fees and testing policiesDo you guarantee I will pass?
No. Nobody honestly can. I can tell you where you stand against the exam guide, what to study, and whether you are ready to book the exam. The result is still yours.
What is your refund policy?
Sessions are prepaid. If you are a consumer in the EU you can withdraw within 14 days and I refund any sessions you have not used. Used sessions are not refundable.
Can I reschedule a session?
Yes, with at least 24 hours' notice. Inside 24 hours the session counts as used, because the slot cannot realistically be filled.
Can we work in Ukrainian?
Yes. Both tracks run in English or Ukrainian at the same price. Choose the language when you book.
Do you coach in person in Amsterdam?
No. Every session is a live online call, wherever you are. I am based in Amsterdam, and sessions run on weekday evenings (18:30–21:30 CET) and at weekends.
Which system design prompts do you use in a mock?
Widely published ones, such as a URL shortener, a rate limiter or a news feed. I never use a question from any company's real interview loop.
Read: 12 system design interview questions and what each one gradesShould I practise with a friend before booking a mock?
Yes. Peer mocks are free and good for repetitions. Book a session when your scores have stopped moving, or when a loop is two or three weeks away and you want an honest written score.
Read: how to run and score a system design mock