Certified
Self-directed project
Frontend Engineering with Prediction Game
Junior Front-End Engineer · Software Engineering · August 2026
92/ 100
A ProoV case study · educational project, not employment
Built a complete World Cup prediction game end to end: rendered the fixture board, scored picks with the exact 5/2/0 rules, computed team attack/defense strengths from real results, and used those strengths to generate bot predictions. Also implemented a persistent ranked leaderboard and shipped the project on a live HTTPS deployment.
Graded against
- Scoring engine correctness30%
- Prediction model genuinely from real data25%
- Game completeness and leaderboard soundness25%
- Shipped and shareable: live deployed URL20%
Passed · pass mark 60/100
What stood out6
- Rendered each fixture as a card with two numeric inputs and visible team names
- Implemented scorePick with correct exact-score, result-only, and draw handling
- Computed team strengths from real results and used both teams' strengths in botPredict
- Persisted leaderboard data to one localStorage key and re-sorted it after reload
- Leakage-Free Feature Engineering
- Honest Model Evaluation
The work I submitted16 tasks
8 tasks · 10 lines · JavaScript · 8 written answers · 575 words
- Lab Orientation669 characters
- Act1 Fixtures FormJavaScript · 3.8k characters
- Act2 Scoring FunctionJavaScript · 2.4k characters
- Act3 Compute Strength108 characters
- Act3 House Bot108 characters
- Act4 LeaderboardJavaScript · 2 lines
- Act5 Assemble2 lines
- Final Submission79 characters
- Lab Orientation65 words
- Act1 Fixtures Form143 words
- Act2 Scoring Function118 words
- Act3 Compute Strength1 word
- Act3 House Bot1 word
- Act4 Leaderboard138 words
- Act5 Assemble108 words
- Final Submission1 word
Summarised on purpose — the submitted code and writing stay private so this page cannot be reused as an answer key. The full submission sits behind the verified certificate.