Screening Task for Developer with BC.Game-like Casino/Slots Experience

We are looking for developers or small teams who have real experience building or contributing to a platform similar to BC.Game or other large-scale online casino / slots systems.

This is NOT the main development project.
This is a paid screening task for Stage 1 only.

We plan to hire 2-3 shortlisted candidates for the next paid stages, and one of them may later be selected for the actual development project.

Project roadmap we have in mind:
1) Initial phase: casino + slots
2) Next phase: original games
3) Later phase: sportsbook integration

For this Stage 1 task, we want to verify your real past experience and your actual role in similar systems.

What you need to provide:

1. Tell us whether you have worked on a platform similar to BC.Game, Stake, Roobet, or other online casino / slots systems.
2. Share any portfolio, live site, demo, screenshots, architecture snippets, or references we can review.
3. Clearly explain what YOU personally worked on.
- backend
- frontend
- wallet
- admin panel
- game integration
- DevOps / infrastructure
- architecture
4. If it was a team project, explain:
- team size
- your exact role
- which parts were done by you directly
5. Describe the most difficult technical problem you faced in such a system and how you solved it.
6. Explain the main tech stack used in that project and where each technology was applied.
7. Provide a simple high-level system structure explanation.
This does NOT need to be a full formal architecture document at this stage.

Important:
- We are not looking for generic answers copied from the internet.
- We want answers based on real project experience.
- If you have no direct experience with casino/slots platforms but have experience with other high-load wallet/transaction systems, you may still apply, but please be honest.

Submission format:
- Written response in clear English
- Bullet points are fine
- Optional: links, screenshots, diagrams, or portfolio references

Selection criteria:
- clarity of actual experience
- clear explanation of personal contribution
- realistic technical understanding
- relevant system experience
- ability to explain problems and solutions clearly

Budget:
- USD 10 fixed price for this screening task

If shortlisted, you may be invited to:
- Stage 2: system thinking / expansion structure task
- Stage 3: more practical architecture review
- final paid pilot implementation