Roblox Simulator Game Development

I'm looking for an experienced Roblox developer to create a simulator or tycoon game from scratch. The main activity in the game will be collecting pets, items, or characters.

Key Features:
- Players can explore the game world to find and collect pets, items, or characters.
- Implement a system for buying and trading with other players.
Exploration & Collection: Players can roam the map to collect pets, items, and characters. Items/pets should have different rarity tiers (Common to Legendary).

Economy & Trading: A secure, two-way player-to-player trade system with a final confirmation screen to prevent scams. Also, a shop system where players can buy/sell items using in-game currency.

Ideal Skills and Experience:
- Proficiency in Roblox Studio.
- Experience in game design, especially in simulator or tycoon genres.
- Strong scripting skills (Lua).
- Knowledge of player trading systems and in-game economies.
- Creativity in designing engaging game worlds and collectibles.
- Can build full maps

Please provide a portfolio showcasing similar projects.