Chatbot Developer (WhatsApp, Telegram, Discord) - Freelance

This is a freelance role for a Tendem project. As a Bot Developer, you'll design, build, and refine messaging bots for one or more messaging platforms, including WhatsApp, Telegram, Discord, Slack, and similar platforms - for use cases such as customer service, appointment booking, order taking, content delivery, moderation, and automated notifications.

- Build bots for one or more messaging platforms, such as WhatsApp (Business API / Cloud API), Telegram (Bot API), Discord, Slack and similar messaging platforms. - Design and implement conversational flows, dialogue state, and fallback handling. - Integrate bots with LLMs (OpenAI, Anthropic, or similar) for natural language responses where appropriate. - Connect bots to backend services, databases, CRMs, and third-party APIs (booking systems, payment, content sources). - Handle webhooks, rate limits, and platform-specific message formats (interactive messages, buttons, media, templates). - Review, debug, optimize, and refactor bot implementations to improve correctness, reliability, maintainability, and graceful error handling. - Implement logging, monitoring, and recovery so bots stay healthy in production.

- At least 3 years of relevant experience backend, integration, automation, or bot development experience (required). - Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields is a plus.

Candidates should have a strong foundation in bot development, messaging platform integrations, and building reliable conversational workflows. We are looking for specialists who can design and maintain production-ready bots, work confidently with APIs, webhooks, and backend services, and build stable, user-friendly bot experiences.

Strong problem-solving skills, attention to detail, and the ability to work independently are essential.

- At least 1 year of hands-on experience building bots for at least one major messaging platforms (WhatsApp, Telegram, Discord, Slack, or similar) is required - Strong command of Python or Node.js for backend bot logic. - Solid experience with REST APIs, webhooks, OAuth, and async request handling. - Experience with relational or NoSQL databases for storing conversation state and user data. - Familiarity with LLM APIs (OpenAI, Anthropic) and prompt design for conversational use is a strong plus. - Understanding of platform-specific limits, message templates, and approval flows (e.g., WhatsApp template messages). - Experience with hosting and deployment (Docker, serverless, VPS, or PaaS)

- Strong attention to detail and commitment to bot reliability - no silent failures, no broken flows. - Self-directed work ethic with the ability to design and ship complete bots independently. - Portfolio or examples of bots you've built (required). - English proficiency: Upper-intermediate (B2) or above (required)

Why this freelance opportunity might be a great fit for you?

- Work fully remote on your own schedule with just a laptop and stable internet connection. - Apply your expertise to real-world technology projects while gaining experience building high-quality solutions for a global platform. - Participate in performance-based bonus programs that reward high-quality work and consistent delivery.