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Update and Enhance TypeScript-Based Express.js Backend API for Telegram Game
Upwork • , US • Remote
Posted on: 19th February, 2025
Employment Type: CONTRACTOR
Job Description
We are seeking a mid-to-senior level TypeScript/JavaScript developer to update and enhance an existing Express.js backend API for a simple Telegram clicker game. The API currently supports core functionalities such as user login, item retrieval, high score display, and PostgreSQL database integration (with ~10 tables of average complexity). The goal is to implement additional Telegram-related features and gameplay mechanics while maintaining the existing codebase.
⭐ Scope of Work ⭐
Telegram Features:
✅ Implement in-app purchases using Telegram Stars (virtual currency).
✅ Add refund tracking functionality (store refund data in a PostgreSQL table).
✅ Enhance existing Telegram command buttons to support new features.
Gameplay Mechanics:
✅ Add bonus multipliers logic (e.g., time-based or achievement-based multipliers).
✅ Introduce new in-game items with associated backend logic.
Code Maintenance:
✅ Write unit and integration tests for new and existing features.
✅ Ensure clean, maintainable, and well-documented code.
📍 Requirements 📍
Technical Skills:
⚬ Strong proficiency in TypeScript and JavaScript (ES6+).
⚬ Experience with Express.js and backend API development.
⚬ Familiarity with PostgreSQL (database design, queries, and migrations).
⚬ Basic understanding of Telegram Bot API and in-app purchase workflows.
Experience Level:
⚬ Mid-to-senior level developer (no need for advanced software architecture expertise).
⚬ Ability to work independently and deliver clean, functional code.
Nice-to-Have:
⚬ Experience with game backend development (e.g., leaderboards, item systems).
⚬ Familiarity with testing frameworks (e.g., Jest, Mocha).
Timeline
⚬ Estimated Duration: 2 weeks (10 business days).
⚬ Deadline: 3 weeks
Budget
⚬ Total Budget: $2000 (fixed price).
⭐ Scope of Work ⭐
Telegram Features:
✅ Implement in-app purchases using Telegram Stars (virtual currency).
✅ Add refund tracking functionality (store refund data in a PostgreSQL table).
✅ Enhance existing Telegram command buttons to support new features.
Gameplay Mechanics:
✅ Add bonus multipliers logic (e.g., time-based or achievement-based multipliers).
✅ Introduce new in-game items with associated backend logic.
Code Maintenance:
✅ Write unit and integration tests for new and existing features.
✅ Ensure clean, maintainable, and well-documented code.
📍 Requirements 📍
Technical Skills:
⚬ Strong proficiency in TypeScript and JavaScript (ES6+).
⚬ Experience with Express.js and backend API development.
⚬ Familiarity with PostgreSQL (database design, queries, and migrations).
⚬ Basic understanding of Telegram Bot API and in-app purchase workflows.
Experience Level:
⚬ Mid-to-senior level developer (no need for advanced software architecture expertise).
⚬ Ability to work independently and deliver clean, functional code.
Nice-to-Have:
⚬ Experience with game backend development (e.g., leaderboards, item systems).
⚬ Familiarity with testing frameworks (e.g., Jest, Mocha).
Timeline
⚬ Estimated Duration: 2 weeks (10 business days).
⚬ Deadline: 3 weeks
Budget
⚬ Total Budget: $2000 (fixed price).
Responsibilities
- The API currently supports core functionalities such as user login, item retrieval, high score display, and PostgreSQL database integration (with ~10 tables of average complexity)
- The goal is to implement additional Telegram-related features and gameplay mechanics while maintaining the existing codebase
- ✅ Add refund tracking functionality (store refund data in a PostgreSQL table)
- ✅ Add bonus multipliers logic (e.g., time-based or achievement-based multipliers)
- ✅ Introduce new in-game items with associated backend logic
- ✅ Write unit and integration tests for new and existing features
- ✅ Ensure clean, maintainable, and well-documented code
Requirements
- 📍 Requirements 📍
- ⚬ Strong proficiency in TypeScript and JavaScript (ES6+)
- ⚬ Experience with Express.js and backend API development
- ⚬ Familiarity with PostgreSQL (database design, queries, and migrations)
- ⚬ Basic understanding of Telegram Bot API and in-app purchase workflows
- ⚬ Mid-to-senior level developer (no need for advanced software architecture expertise)
- ⚬ Ability to work independently and deliver clean, functional code
- ⚬ Experience with game backend development (e.g., leaderboards, item systems)
- ⚬ Familiarity with testing frameworks (e.g., Jest, Mocha)
Upwork
Technology
Job Type
CONTRACTOR
Benefits
- ⚬ Total Budget: $2000 (fixed price)
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