Built a roulette mini-game and ops tooling across game UI, admin, and Node services.

What changed

Pulled validation, services, animation identity, and cache invalidation into the same delivery path.

Measured outcomes

roulette mini-game shipped

Zero → prod

ops onboarding after bulk import

Hours → mins

product surfaces owned across the stack

4

Highlights

• Built a full-featured roulette mini-game from scratch: drag-and-drop chip placement, Rive state-machine animation, and a chip-identity model that stopped merge/split jitter.
• Shipped missions across backend CRUD, admin UI, nested rewards, goals, conditions, and post-creation locks on economy-critical identifiers.
• Built a spreadsheet import flow for ops with schema checks, business rules, asset-ratio validation, currency validation, and per-row errors mapped back to the source cells.
• Added jackpot image generation and social sharing with the Web Share API, clipboard fallback, Redis TTL based on amount, and locale-aware currency formatting.
• Wired free-rounds from wallet API through mission-start cache invalidation to the UI, including auto-play support and an explicit state model.
• Built assignment management with server-side overlap checks and conflict detection, keeping the authoritative date on the server.
• Added AWS SSO shell helpers and database utilities the team kept using after the feature work was done.

Outcomes

• Delivered missions, roulette, free-rounds, jackpot sharing, and the bulk-import flow across admin, game UI, and backend services.
• Three rounds on chip identity produced a pattern the team could reuse for later animated game components.
• Bulk import took an ops workflow from hours to minutes, with validation on both client and server.

Stack

• TypeScript
• React 18
• Vite
• TanStack Query
• NestJS
• Prisma
• Sequelize
• PostgreSQL
• Redis
• Rive
• AWS
• Turborepo