AI Full-Stack Software Engineer

Rate, USD
$50 / hour
Work schedule
Full Time, Contract, Part Time, Temporary,
Language skills
English
Available for Hire
Yes
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About me

I am an AI Full-Stack Software Engineer specializing in Voice AI agents, generative video and multimodal systems, and LLM-powered SaaS solutions tailored for healthcare, retail analytics, and social platforms. My expertise lies in architecting real-time communication systems using technologies such as LiveKit and WebRTC, alongside event-driven microservices and compliant production deployments on cloud platforms like AWS and GCP with a strong focus on HIPAA and SOC2 compliance.

Throughout my career, I have delivered significant efficiency gains, ranging from 35% to 60%, by automating complex workflows at companies like Theoria Medical and Dayta AI. I pioneered AI social networks at Butterflies AI, developing character generation, autonomous chatbots, and cross-platform experiences that enhance user engagement and interaction.

I am a collaborative builder who prioritizes security, scalability, low-latency performance, and revenue-driving AI features. My technical stack includes TypeScript, Python, and cloud infrastructure, with extensive experience integrating OpenAI models and other LLMs into production environments.

In my current role as a Senior Software Engineer, I architect and optimize real-time voice AI agents, improving call quality and responsiveness through advanced audio pipelines and telephony integrations. I have successfully integrated voice AI into healthcare workflows, reducing manual effort and improving patient interactions.

Previously, I led full-stack development for an AI social network, creating realistic AI personas and chatbots powered by advanced diffusion models and LLMs. I also developed generative AI solutions for healthcare operations, including AI medical agents and telemedicine assistants, improving accessibility and operational efficiency.

My experience extends to AI video analytics and script-to-video workflows for retail clients, enabling rapid insights and reducing analytics delivery times significantly. I am passionate about leveraging AI to build innovative, user-centric products that drive measurable business outcomes.


Professional area



Education

08/2013 – 08/2017 Bachelor of Science in Computer Science @ Hong Kong College of Technology (HKCT)

Experience

07/2025 – Present Senior Software Engineer @ Self Employed

Architected and optimized real-time voice AI agents using LiveKit, TTS/STT services (Deepgram, Cartesia) and GPT-4/5 for low-latency interactions. Improved call quality with a 4.8/5 satisfaction rating. Developed real-time audio pipelines managing interruptions, silence detection, and turn-taking. Led integration of LiveKit with telephony systems (Twilio, FreeSWITCH) enhancing call stability and reducing latency. Implemented jitter and packet loss reduction strategies. Utilized LiveKit analytics for debugging and resource management. Built adaptive dialogue pipelines with VAD, ASR → LLM → TTS improving automation accuracy by 40%. Integrated voice AI into healthcare workflows reducing manual effort by 45%. Orchestrated and fine-tuned LLMs leveraging Amazon Bedrock and Bedrock Data Automation.

12/2023 – 06/2025 Senior Software Engineer @ Butterflies AI

Led full-stack development for the first AI social network enabling humans and AI characters to coexist through posts, comments, DMs, and interactive experiences. Built core features for realistic character generation using ComfyUI, Stable Diffusion, and custom training pipelines. Designed and implemented LLM-powered AI chatbots, story generation, and prompt management systems. Developed text-to-image generation workflows integrated with social feed. Engineered cross-platform mobile experiences with React Native and iOS development. Architected scalable backend services using Node.js, Supabase, and AWS. Optimized event-driven microservices for scaling, low-latency, and secure multimodal AI outputs. Collaborated on product launches increasing user adoption.

02/2019 – 11/2023 Software Engineer @ Theoria Medical

Built generative AI solutions for healthcare operations including automatic email drafting, clinical note summarization, and visual content generation. Designed internal automation systems reducing manual effort by 35%. Developed voice-interactive AI medical agents, receptionists, and telemedicine assistants using ASR and TTS. Created AI receptionist handling inbound calls, verifying patient info, and routing calls. Built telemedicine AI agent for pre-visit info collection and note generation. Integrated AI microservices into production SaaS with secure data handling and role-based access. Exposed AI capabilities as APIs consumed by web apps and internal tools. Collaborated with clinical and operations teams to translate requirements into AI features. Implemented monitoring and experimentation for AI features.

08/2017 – 01/2019 Software Engineer @ Dayta AI

Built AI video analytics features for Cyclops including automated avatar overlays, voice narration syncing, and rapid localization of insights for retail clients. Created script-to-video workflows generating narrative reports from store camera data. Developed real-time preview pipelines for visitor traffic and cloud rendering for BI reports, reducing delivery time by 60%. Implemented secure backend for RTSP camera streams, demographic tracking, and role-based dashboards. Integrated real-time alerts and POS data for staffing and campaign evaluation. Partnered with product teams to scale video-to-insights pipelines supporting 150k+ daily videos.


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