You will get AI Developer | Voice AI Developer | OpenAI | ElevenLabs
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Project details
As an AI Developer, I build custom voice cloning and text-to-speech solutions for businesses that need branded AI Voice Developer experiences. My AI Developer expertise combines OpenAI reasoning with ElevenLabs voice synthesis to create unique AI Voice Developer voices matching your brand tone. I deliver AI Developer solutions that convert any text into natural speech — for IVR systems, podcast automation, video narration, and customer-facing AI Voice Developer assistants. Every AI Developer project includes AI Voice Developer voice training, quality tuning, and seamless API integration.
Includes: AI Developer backend, AI Voice Developer voice cloning, TTS pipeline, API integration, quality testing, deployment, and documentation.
Includes: AI Developer backend, AI Voice Developer voice cloning, TTS pipeline, API integration, quality testing, deployment, and documentation.
AI Algorithms
Large Language Model, Transformer Model, YOLOAI Applications
AI Chatbot, Anomaly Detection, Conversational AI, Sentiment Analysis, Text RecognitionAI Development Language
PythonAI Models
GPT-4, LLaMAWhat's included
| Service Tiers |
Starter
$500
|
Standard
$1,100
|
Advanced
$2,200
|
|---|---|---|---|
| Delivery Time | 5 days | 12 days | 20 days |
Number of Revisions | 1 | 2 | 3 |
AI Model Integration | - | - | - |
Batch Normalization | - | - | - |
Database Integration | - | - | - |
Detailed Code Comments | - | - | - |
Image Upscaling | - | - | - |
MLOps | - | - | - |
Model Deployment | - | - | - |
Model Documentation | - | - | - |
Model Monitoring | - | - | - |
Model Testing & Optimization | - | - | - |
Model Tuning | - | - | - |
Natural Language Processing | - | - | - |
NLP Tokenization | - | - | - |
Pre-Training | - | - | - |
Prompt Engineering | - | - | - |
Setup File | - | - | - |
Source Code | - | - | - |
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CB
Chris B.
May 26, 2026
AI Developer / AI Chatbot — Membership Platform Phase 1: Foundation & Sales Page
Viktor is always looking forward on the job. Sees issues and asks for direction before things get completed to make the finished work much better.
CB
Chris B.
May 9, 2026
AI-powered membership platform build — Circle + Claude API + Stripe + Pinecone
Viktor did a test build for an AI system we are building. Built it, stayed on focus and finished a day ahead of needed date. Hiring again shortly!
MP
Mihaela P.
Feb 20, 2026
Backend engineer is needed - Python, Postgresql, Docker, EKS
Victor has a deep knowledge of backend architecture, it was a pleasure working with him
CT
Carlos T.
Jan 24, 2026
Senior Backend Engineer (Twilio + Voice AI) for Restaurant Phone Assistant
JH
Jan H.
Jan 18, 2026
AI Engineer (Python/LangChain/LLM) for Next-Generation Book Recommendation Engine
About Viktor
AI Developer AI Agent AI Developer AI Chatbot AI Voice Developer LLM
100%
Job Success
Baia Mare, Romania - 1:47 am local time
📩 Send your project brief - I'll reply within 2 hours with a concrete action plan.
🏆 Why work with me?
🥇 Technical Reviewer for Manning Publications (Efficient AI in Practice & Enterprise RAG).
🥇 Winner of the Enterprise RAG Challenge.
🥇 Top-Rated AI Developer on Upwork with a focus on ROI.
🥇 Expert LLM Engineer specialising in hallucination-free RAG systems.
Core Specialisations
❇️ AI Voice & Chatbot Development
As a specialised AI developer, I build full voice pipelines: Deepgram/Whisper → GPT-4/Claude → ElevenLabs.
Expert in chatbot development and conversational business logic for WhatsApp, Telegram, and Web.
I work as a dedicated chatbot developer integrating systems with ManyChat, Botpress, and OpenAI API.
Modern chatbot development setups to act as a 24/7 sales engine and support lead.
❇️ AI Agent Architecture & Autonomous Workflows
I am an AI developer who excels in AI Agent architecture using LangGraph and CrewAI.
Multi-AI Agent systems for lead generation, deal tracking, and complex CRM automation.
Autonomous AI Agent workflows connected to Slack, Shopify, and enterprise backends.
Every AI Agent I build is designed to scale and optimise business processes without increasing headcount.
⚙️ LLM Engineering & Advanced RAG
As a senior LLM Engineer, I solve the "hallucination problem" for modern enterprises.
Advanced LLM pipelines designed with a focus on Vector Databases (Pinecone, Weaviate, Milvus).
Custom fine-tuning, prompt engineering, and production-ready LLM infrastructure.
🛠️ FULL-STACK TECH STACK & DATA SCIENCE
As an AI Developer: Python, FastAPI, Docker, AWS, Asyncio.
As a Python Developer: LangChain, LlamaIndex, LangGraph, PyTorch.
As a Web Developer: Frontend frameworks, responsive platforms, and API integration.
As a Data Scientist: Advanced data processing, analytics pipelines, and model evaluation.
❇️ WHAT YOU GET WITH EVERY PROJECT
When you hire me as your AI developer, you get production-ready, scalable, and cleanly documented code. As a professional Python Developer, I ensure your system is robust, while my background as a data scientist guarantees that your data is processed with maximum analytical precision. Whether it's complex chatbot development for support or an AI Agent workflow for outbound sales, I handle the full CI/CD deployment on AWS.
As a skilled web developer and agentic ai developer, I ensure your user interfaces are as smooth as the underlying AI models. By combining the precision of a data analyst with the agility of a Python full stack developer, I create applications that are data-driven. Every Python full stack developer setup I deploy is fully integrated with analytical tools, meaning a data analyst or data scientist on your team can easily track performance.
🌐 EXPERTISE ACROSS THE spectrum
Whether you need a high-performance chatbot developer to automate customer service or a senior LLM expert to architect complex RAG systems, I deliver code that scales:
For Enterprises: I act as a Lead Python Developer and machine learning consultant, building autonomous workflows. My skills as a data scientist allow me to extract valuable insights from your historical enterprise data.
For Startups: As a python full stack developer and agentic AI developer, I focus on rapid deployment of AI Bot solutions. I leverage modern frontend and backend practices as a capable web developer.
For Deep Tech & Analytics: My work as a data scientist and machine learning specialist ensures your systems are backed by solid statistics. From predictive modeling as a data analyst to implementing heavy machine learning algorithms, I cover all your data needs.
From simple Python Developer scripting to high-level architecture, my goal is to provide Enterprise AI solutions that offer a clear ROI. If you are looking for a Senior Python Developer who understands both the business logic and the technical architecture, let’s connect.
As a web developer and chatbot developer, I create complete digital ecosystems. My machine learning pipelines and python full stack developer practices ensure your software is future-proof, while my experience as a web developer guarantees flawless deployment. This unique blend of a python full stack developer skillset makes me the ideal partner for your next project, seamlessly combining the strengths of a data analyst, a machine learning engineer, and a certified data analyst.
👉 Send me your project brief — I’ll get back to you within 2 hours with a free AI visibility audit.
Last update: 04.06.2026
Steps for completing your project
After purchasing the project, send requirements so Viktor can start the project.
Delivery time starts when Viktor receives requirements from you.
Viktor works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Voice AI Requirements
Analyze use case, collect voice samples, define AI Developer architecture and AI Voice Developer voice characteristics.
AI Voice Developer Voice Training
Process voice samples, train custom ElevenLabs voice model, tune quality, emotion range, and speaking pace.