Hire the Best Speech Synthesis Specialists

AI Voice Agent Developer | Vapi AI & Retell AI | Automated Call Handling & Lead Booking Missed calls and slow follow-up cost businesses real revenue. I build AI voice agents on Vapi AI and Retell AI that answer calls, qualify leads, and book appointments so your business responds instantly, 24/7, without hiring extra staff. ★★★★★ "This is my second time working with Zarah, and once again she delivered exceptional work." repeat client, home services business What I build: Inbound AI voice agents that answer, qualify, and route calls (Twilio, PBX, Asterisk) Outbound AI callers for lead follow-up, re-engagement, and appointment confirmation AI receptionists for healthcare, real estate, hospitality, and local service businesses End-to-end integration with your CRM, calendar, and workflow tools (HubSpot, GoHighLevel, n8n, Make, Zapier) Recent results: Dental clinic: built an AI receptionist handling booking, reminders, and patient inquiries client reported zero missed new-patient calls in the first month Local service business: deployed a Retell AI outbound caller that re-engaged a dormant lead list, booking 18 appointments in the first two weeks Lead workflow client: integrated Retell AI with n8n for fully automated intake eliminated manual data entry and cut lead response time from hours to under a minute How it works: message me with your use case → I'll map your call flow and tell you honestly whether a voice agent fits → if it does, most builds are live within 1-2 weeks. If you're losing leads to missed calls or slow response times, let's talk. Retell AI, Vapi AI, AI Voice Agent, Retell AI Developer, Vapi AI Developer, AI Voice Agent Development, Retell AI Integration, Vapi AI Integration, AI Voice Agent Automation, Retell AI Voice Agent, Vapi AI Voice Agent, AI Voice Agent Expert, Retell AI Solutions, Vapi AI Solutions, Retell AI Automation, Vapi AI Automation, AI Voice Agent Consultant, AI Voice Agent Solutions, Retell AI Expert, Vapi AI ExpertRetell AI, Vapi AI, AI Voice Agent, Retell AI Developer, Vapi AI Developer, AI Voice Agent Development, Retell AI Integration, Vapi AI Integration, AI Voice Agent Automation, Retell AI Voice Agent, Vapi AI Voice Agent, AI Voice Agent Expert, Retell AI Solutions, Vapi AI Solutions, Retell AI Automation, Vapi AI Automation, AI Voice Agent Consultant, AI Voice Agent Solutions, Retell AI Expert, Vapi AI ExpertRetell AI, Vapi AI, AI Voice Agent, Retell AI Developer, Vapi AI Developer, AI Voice Agent Development, Retell AI Integration, Vapi AI Integration, AI Voice Agent Automation, Retell AI Voice Agent, Vapi AI Voice Agent, AI Voice Agent Expert, Retell AI Solutions, Vapi AI Solutions, Retell AI Automation, Vapi AI Automation, AI Voice Agent Consultant, AI Voice Agent Solutions, Retell AI Expert, Vapi AI ExpertRetell AI, Vapi AI, AI Voice Agent, Retell AI Developer, Vapi AI Developer, AI Voice Agent Development, Retell AI Integration, Vapi AI Integration, AI Voice Agent Automation, Retell AI Voice Agent, Vapi AI Voice Agent, AI Voice Agent Expert, Retell AI Solutions, Vapi AI Solutions, Retell AI Automation, Vapi AI Automation, AI Voice Agent Consultant, AI Voice Agent Solutions, Retell AI Expert, Vapi AI ExpertRetell AI, Vapi AI, AI Voice Agent, Retell AI Developer, Vapi AI Developer, AI Voice Agent Development, Retell AI Integration, Vapi AI Integration, AI Voice Agent Automation, Retell AI Voice Agent, Vapi AI Voice Agent, AI Voice Agent Expert, Retell AI Solutions, Vapi AI Solutions, Retell AI Automation, Vapi AI Automation, AI Voice Agent Consultant, AI Voice Agent Solutions, Retell AI Expert, Vapi AI Expert

I build AI systems that don’t break in production, don’t crumble at scale, and don’t become your next expensive rewrite. Over the past year I've shipped a voice AI healthcare assistant handling 50,000+ users (cutting staff workload by 70%), built agentic workflows for real-time patient triage and scheduling, and developed LLM infrastructure that runs in live enterprise environments. I currently build tooling for enterprise companies including a platform for deploying and scaling AI models in production. My core stack: → Voice & Real-Time AI: LiveKit, Deepgram, Cartesia → Agentic Systems: LangChain, OpenAI API, multi-agent orchestration → LLM Deployment: vLLM, Ollama, Hugging Face, GPU inference, CUDA → Full-Stack: React.js, Next.js, FastAPI, Django, Node.js → DevOps / Infra: Docker, Kubernetes, Grafana, Linux, Slurm What I build: - AI voice agents for customer-facing and healthcare use cases - Agentic automation pipelines (lead generation, triage, scheduling) - LLM infrastructure including both local and cloud deployment, inference optimization - Full-stack AI-powered applications with real backend systems - GPU clusters and HPC environments for AI research I've been awarded First Prize at the National Tech Expo for edge AI systems and built a 1.2 petaflop GPU cluster for AI research from scratch. If you need AI that integrates cleanly into real operations and delivers measurable output; let's talk.

AI Audio Engineer specializing in ASR, TTS, voice cloning, and generative music systems. I build and deploy production-ready audio AI pipelines — from speech recognition and synthesis to real-time music generation and audio intelligence. Every system is designed for low latency, edge deployment, and real-world scalability. I’m Ustym, an AI & Machine Learning expert and tech lead specializing in real-time speech, music, and audio processing. I help startups and R&D teams design, prototype, and launch AI-powered audio solutions that are robust, scalable, and ready for production. Whether you’re building a TTS voice assistant, enhancing voice quality, or generating music with style conditioning — I’ve got you covered. 🧰 WHAT I OFFER 🔹 Design and train ASR, TTS, voice cloning, and audio generation models 🔹 Build production-ready pipelines for speech, music, and sound AI 🔹 Optimize models for edge devices (ONNX, TensorRT, TFLite) 🔹 Deliver full-cycle ML development: from research to deployment 🔨 WHAT I BUILD I work across the full pipeline: research, data processing, model training, evaluation, and deployment. My solutions are designed for real-time performance, low latency, and production scalability. 🗣️ AI Speech Systems - ASR (speech-to-text), TTS (text-to-speech), voice cloning, speech enhancement - Speaker identification, phoneme recognition, prosody analysis - Robust to accents, emotions, background noise, and multilingual input 🎵 AI Music & Audio Generation - Generative music with mood/style/genre control, BPM/key detection - Instrument transcription, music captioning, stem separation, audio-to-MIDI - Trusted by music tech platforms and sound design teams 🔉 Audio Intelligence & Sound Analysis - Audio event detection, acoustic scene classification, similarity search - Text-to-audio generation, real-time audio understanding - Applied in smart environments, accessibility, health tech 🛠️ TECH STACK 🧠 AI Frameworks: PyTorch, TensorFlow, Keras, JAX, Hugging Face Transformers, Diffusers 🎙️ Speech & Audio Processing: Whisper, NVIDIA NeMo, SpeechBrain, Kaldi, ESPnet, Coqui TTS Librosa, Torchaudio, FFmpeg, SoX, PyDub, PyAudio, PortAudio 🎧 Generative Audio Models: StyleTTS, Bark, ElevenLabs, Descript Overdub, Magenta, MusicLM, AudioLM, Riffusion, DDSP ⚙️ Model Deployment: ONNX, TensorRT, TorchScript, TFLite, Docker, FastAPI ☁️ Cloud & MLOps: AWS (SageMaker, Lambda, EC2), GCP, Azure, MLflow, DVC, GitHub Actions 👨‍💻 Programming & Data Tools: Python, C++, JavaScript, NumPy, Pandas, SciPy, SQL, Git 🎯 INDUSTRIES I SUPPORT ✔️ Media & Entertainment – multilingual dubbing, personalized streaming, voice synthesis ✔️ Music Tech – AI tools for composition, tagging, sound design ✔️ Gaming & XR – dynamic sound, NPC voices, real-time audio events ✔️ Healthcare – assistive tools, voice diagnostics, accessibility ✔️ EdTech – pronunciation feedback, speech tutoring, language training ✔️ Smart Devices & Security – voice authentication, sound-based alerts ✔️ Customer Experience – transcription, voice agents, sentiment detection ✔️ Video & Film – dubbing, adaptive soundtracks, intelligent editing 💡 WHY ME 🔹 Deep Audio AI Focus – I specialize 100% in speech, music, and sound AI 🔹 Research-Driven Development – I follow the latest ML innovations and apply them fast 🔹 Production-Oriented Mindset – Models are built for deployment, not just demos 🔹 Business Alignment – My work supports real product outcomes and ROI I lead a team of AI/ML audio engineers at It-Jim, where we’ve built systems for voice tech startups, creative tools, medtech products, and smart environments. We bring in strong expertise in ASR, TTS, audio DSP, and full-stack ML delivery. Let’s talk if you need a hands-on expert to build or improve your Audio AI system. Whether it’s voice, music, or sound recognition — I’ll help you go from idea to real-world solution. Let’s build something amazing with sound!

HIPAA-aware AI voice agents for healthcare — built on Synthflow, Retell AI and ElevenLabs. I turn missed calls into booked appointments with 24/7 reception, appointment booking and CRM automation that capture every inquiry and route it into your real systems. I specialize in production voice agents (Synthflow, Retell AI, Voiceflow, ElevenLabs) wired into your real systems — GoHighLevel, HubSpot, EHR / booking tools, Twilio telephony, plus AI chat & WhatsApp assistants (ManyChat, WATI) — with OpenAI / GPT-4o driving the conversation and n8n / Make orchestrating the workflow end to end. Healthcare is where I'm strongest. Recent work includes: Patient growth & booking across a 55-clinic chiropractic network (Australia) 24/7 AI shift-coordination for UK NHS healthcare staffing Bilingual (EN / ES) after-hours patient reception (Miami) Inbound AI receptionists for dental & medical clinics AI voice agent for medical consults (Synthflow + PracticeQ / EHR) I design with compliance in mind: HIPAA-aware architecture, PHI minimization, audit logging, and clear medical-escalation rules — the AI never diagnoses or gives medical advice; it routes to your staff. Beyond healthcare, I deliver the same voice + integration stack for clinics, agencies, startups, and appointment-driven service businesses. What I deliver: AI voice & chat agents: inbound / outbound calls (Twilio, VoIP), WhatsApp & web chat, FAQ, triage, appointment booking Lead qualification, enrichment & conversion bots Knowledge-base & RAG assistants (document / data retrieval, multi-agent) AI automation for business operations (n8n, Make, Zapier) + API / webhook integration CRM & calendar integration (GoHighLevel, HubSpot, Google Calendar) QA & testing for conversation flows and backend logic Backed by 8+ years in project management and backend development (JavaScript, Node.js, Express, serverless, Supabase), I own the full delivery cycle — architecture, conversation design, QA, deployment. Let's build a voice agent that fits your business. Message me to start)

I build production-ready AI systems that automate business workflows, transform unstructured data into actionable insights, and replace repetitive manual processes with intelligent automation. I specialize in Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), Computer Vision, Voice AI, Machine Learning, and workflow automation. My goal is to build scalable AI applications that integrate seamlessly into existing business processes and deliver measurable business value. Recent Projects • Built an industrial computer vision pipeline using YOLOv8 OBB, SORT, PaddleOCR, and ZXing for automated manufacturing line monitoring. • Developed Nexa, a Vapi.ai-powered voice agent that automates appointment scheduling through natural conversations and backend API integrations. • Created IntelliDoc, a multi-document RAG platform using LangChain, FAISS, Hugging Face, and Gemini AI, enabling users to retrieve information from multiple documents using natural language. What I Can Deliver ➤ AI Agents & Chatbots • RAG-based document and knowledge base chatbots using LangChain, FAISS, Hugging Face, and Gemini AI • Custom AI agents powered by OpenAI, Claude, Gemini, and Mistral • Multi-document semantic search and intelligent document Q&A • Voice AI agents using Vapi.ai and Retell AI • Prompt engineering and custom LLM workflows • REST API integrations with third-party platforms ➤ Computer Vision • Real-time object detection and tracking using YOLO and SORT • OCR pipelines using PaddleOCR and ZXing • Image classification using CNNs and Transfer Learning (MobileNetV2) • Facial emotion recognition and AI-powered image analytics • Deep learning solutions using TensorFlow and PyTorch ➤ Workflow Automation • Intelligent automation using Python, n8n, Make, and Zapier • CRM, Gmail, Slack, and API integrations • Lead management, reporting, and business process automation • End-to-end workflow automation to eliminate repetitive tasks ➤ Machine Learning & Data Science • NLP, text classification, predictive modeling, and recommendation systems • Resume-job matching and intelligent document processing • Data preprocessing, feature engineering, and model optimization • Model deployment using Flask, FastAPI, and Django Technical Stack Languages: Python, JavaScript, SQL AI & Machine Learning: OpenAI API, Gemini AI, Claude, Hugging Face, LangChain, FAISS, TensorFlow, PyTorch, Scikit-learn, Keras, LLMs, RAG, NLP, Computer Vision Backend: FastAPI, Flask, Django, React Automation: n8n, Make, Zapier, REST APIs, Workflow Automation, API Integrations Tools & Deployment: Docker, Git, GitHub, Jupyter Notebook, Google Colab, Vapi.ai, Retell AI How I Work Every project starts with understanding your business goals before designing the technical solution. I prioritize clean architecture, scalable development, and production-ready implementations that are easy to maintain and integrate seamlessly into your existing workflows. Whether you need an AI chatbot, a RAG application, a Voice AI agent, a Computer Vision solution, or workflow automation, I build reliable AI systems that improve efficiency, reduce manual effort, and create long-term business value. Available for short-term & long-term projects | Production-Ready AI Solutions | Reliable Communication | Clean Code | Scalable Architecture AI Engineer | LLM | RAG | AI Agents | AI Chatbots | LangChain | OpenAI API | Gemini AI | Claude | Hugging Face | Computer Vision | YOLO | OCR | TensorFlow | PyTorch | NLP | Machine Learning | Voice AI | Vapi.ai | Retell AI | Workflow Automation | n8n | Make | FastAPI | Flask | Django | React | Python | SQL | Docker

High-quality language data can make the difference between an AI system that performs well and one that fails to understand real users. I help AI companies, research teams, and technology projects improve the quality of their language datasets through accurate data annotation, speech evaluation, voice recording, transcription review, linguistic validation, and content quality assurance. I am a native Spanish speaker with English proficiency and a background in journalism, content creation, and language-focused projects. In addition to AI training and data annotation, I have professional experience as a journalist and content writer for Spanish newspapers including Granada Hoy and Ideal, where I developed strong research, writing, editing, proofreading, and editorial review skills. What I can help you with: ✔ Spanish & English AI Training and Data Annotation ✔ Speech Data Collection, Evaluation, and Quality Control ✔ Voice Recording for AI Models and Digital Products ✔ Transcription Review, Dataset Filtering, and Quality Assurance ✔ Linguistic Validation and Data Labeling ✔ Content Writing, Editing, and Editorial Review ✔ Proofreading and Localization for Spanish Content ✔ Social Media and Blog Content Creation Why clients work with me: • Strong attention to detail and data quality • Excellent written communication skills • Professional, reliable, and deadline-oriented • Experience working with language-sensitive projects • Background in journalism, media, and content production Additional expertise: • Voice-over and speech recording • Article writing and editorial content • Blog and social media content creation • Customer support and administrative assistance • Photography and multimedia content creation Whether you need support for AI training, language data projects, transcription quality control, content writing, or editorial review, I am committed to delivering accurate, high-quality work that helps your project succeed.