Senior Chatbot Developer – Remote Prototype

Twine; Singapore; Remote; SGD 69,000 - 122,000; Part time

Job summary

A leading freelance marketplace is looking for a developer to create a sentiment-sensitive chatbot prototype for healthcare applications. The role involves ensuring empathetic interactions, sentiment detection, and compliance with GDPR standards. The engagement is short-term and remote, with potential for future opportunities. Candidates should have proven experience in conversational AI, natural language processing, and accessibility standards, and be able to work UK hours.

Qualifications

• Experience developing chatbot solutions, preferably in healthcare.
• Strong proficiency in sentiment analysis and voice recognition.
• Demonstrated ability in designing empathetic conversational flows.

Responsibilities

• Develop a prototype of a sentiment-aware healthcare chatbot.
• Implement multimodal interaction with sentiment detection.
• Ensure GDPR-compliant data collection and user consent.

Skills

Conversational AI development

Natural language processing

Sentiment analysis

Voice recognition technologies

User-centric design

GDPR compliance knowledge

Multimodal interfaces

Attention to detail

Job description

Overview

This role involves developing a sentiment-sensitive chatbot prototype for a healthcare-focused application. The chatbot must engage users with empathy, ask thoughtful questions, and suggest actionable solutions while collecting structured data. The system should detect sentiment from both text and voice inputs, adapt its responses accordingly, and remember previous user interactions to foster trust. Accessibility is a priority, with support for multiple languages and low-literacy users. The prototype must comply with GDPR standards, explicitly request user consent for data storage, and provide clear escalation pathways for safeguarding concerns. The engagement is short-term, remote, and may lead to future opportunities based on the success of the prototype trial.

Deliverables

• Design and develop a functional prototype of a sentiment-aware chatbot for healthcare use.
• Implement multimodal interaction (text and voice) with sentiment detection and adaptive response logic.
• Integrate features for empathetic, supportive conversation, including reflective listening and permission-based prompts.
• Enable the chatbot to remember and reference previous user interactions.
• Provide actionable tips and surface relevant content during conversations.
• Build secure, GDPR-compliant data collection and storage workflows, including explicit consent mechanisms.
• Develop accessible UX for users with varying literacy levels and language needs.
• Prepare the prototype for trial deployment and feedback collection.

Requirements

• Proven experience developing conversational AI or chatbot solutions, preferably in healthcare or sensitive domains.
• Strong proficiency in natural language processing, sentiment analysis, and voice recognition technologies.
• Demonstrated ability to design empathetic, user-centric conversational flows.
• Deep understanding of GDPR and best practices for data privacy and consent management.
• Experience with multimodal interfaces (text and voice) and accessibility standards.
• Ability to deliver high-quality prototypes within tight timelines.
• Excellent communication skills and attention to detail.
• Based in the UK or able to work UK hours preferred; remote work supported.

About Twine

Twine is a leading freelance marketplace connecting top freelancers, consultants, and contractors with companies needing creative and tech expertise. Trusted by Fortune 500 companies and innovative startups alike, Twine enables companies to scale their teams globally.

Our Mission

Twine's mission is to empower creators and businesses to thrive in an AI-driven, freelance-first world.