Viktor Shcherban - AI Engineer & Full-Stack Developer

Q: Where is Viktor based?

Viktor is based in Berlin, Germany .

Q: What languages does Viktor speak?

Viktor speaks the following languages: Ukrainian (Native), English (Advanced), German (Intermediate) .

Q: How many years of experience does Viktor have?

Viktor has at least 21 years of experience. During this time, Viktor has worked in at least 7 different roles and for 14 different companies . The average length of individual experience is 2 years and 6 months . Note that Viktor may not have shared all experience and actually has more experience.

Q: What is Viktor's latest experience?

Viktor's most recent position is AI Engineer (Freelance) at Empion .

Q: What companies has Viktor worked for in recent years?

In recent years, Viktor has worked for Empion , Dolittle AI , DocDolittle , Alteos , and SuitePad .

Q: Which industries is Viktor most experienced in?

Viktor is most experienced in industries like Information Technology , Retail , and Tourism . Viktor also has some experience in Agriculture , Government and Administration , and Healthcare .

Q: Which business areas is Viktor most experienced in?

Viktor is most experienced in business areas like Information Technology , Product Development , and Operations . Viktor also has some experience in Marketing , Project Management , and Customer Service .

Q: Which industries has Viktor worked in recently?

Viktor has recently worked in industries like Information Technology , Agriculture , and Government and Administration .

Q: Which business areas has Viktor worked in recently?

Viktor has recently worked in business areas like Product Development , Information Technology , and Operations .

Recommended expert

Berlin, Germany

Check rate

Experience

Jan 2025 - Present

1 year 6 months

Berlin, Germany

Remote

AI Engineer (Freelance)

Empion

Enterprise AI content categorization and AI-powered web research.

Built multi-LLM evaluation framework with annotated data
Iterated LLM error rates based on annotated datasets
Implemented AI-powered web research pipeline Stack: LLM, evals, OpenRouter, Python, Node.js, TypeScript, React

Jan 2025 - Present

1 year 6 months

Berlin, Germany

Remote

AI Engineer (Freelance)

Dolittle AI

Multi-modal AI agents platform.

Built RAG-enabled AI platform features for voice and text agents
Implemented custom LLM evaluation frameworks and agentic workflows
Integrated OpenAI Realtime API and AWS Nova Sonic 2 for voice AI Stack: LLM, RAG, LangChain, Python, Node.js, Supabase, OpenAI Realtime API, AWS Nova Sonic 2, TypeScript, React, AWS

Jan 2025 - Present

1 year 6 months

Berlin, Germany

Remote

AI Engineer (Freelance)

DocDolittle

AI voice phone receptionist for German doctors' practices.

Built multi-modal voice/text agents for incoming call handling
Implemented AI-generated reply suggestions and smart call categorization
Integrated VoIP/FreeSWITCH with ElevenLabs voice synthesis Stack: RAG, LLM, MCP, LangChain, VoIP, FreeSWITCH, ElevenLabs Voice, Supabase, Node.js, React, TypeScript, AWS, Pinecone

Jan 2025 - Present

1 year 6 months

Berlin, Germany

Remote

AI Engineer (Freelance)

Alteos

AI solutions for the insurance industry.

AI strategy consulting and enterprise AI workflow design
Built agentic workflows and LLM-powered automation Stack: Vercel AI SDK, RAG, LLM, MCP, LangChain, Mastra, Langfuse, Node.js, TypeScript

Jan 2024 - Present

2 years 6 months

Berlin, Germany

Remote

AI Engineer (Freelance)

SuitePad

AI concierge platform for hotels — text & voice chatbot grounded in hotel-specific knowledge.

Built RAG pipelines, MCP servers, personalized recommendations, and multi-vendor AI voice integrations
Integrated OpenAI Realtime API and AWS Nova Sonic 2 for voice AI
Built document ingestion and AI evaluation pipelines Stack: Vercel AI SDK, RAG, LangChain, LangSmith, OpenAI Realtime API, AWS Nova Sonic 2, Python, Ruby on Rails, AWS Bedrock, Azure OpenAI, Google Vertex AI, pgvector, MCP

Jan 2023 - Present

3 years 6 months

Berlin, Germany

Remote

GenAI Workshop Author & Trainer (Freelance)

Self-employed

Author and trainer of GenAI workshops for developers. Trained 80+ developers across 4 workshops.

Topics: Claude Code, Codex CLI, Cursor Agent, JetBrains AI, TDD/spec-driven development
Advanced prompting, context engineering, custom AI tools, best practices and anti-patterns
AI-assisted coding with agents and IDEs

Jan 2023 - Dec 2025

3 years

Berlin, Germany

Remote

AI Engineer / Founder (Volunteer)

Ukraine Refugee Support

Telegram AI chatbot helping Ukrainian refugees navigate German bureaucracy.

Built RAG-enabled bureaucracy assistant with document understanding
Implemented image recognition for document processing
Added web-search grounding for up-to-date information Stack: RAG, LLM, React, DynamoDB, Terraform, Serverless, TypeScript, Node.js, AWS, OpenAI

Sep 2020 - Sep 2023

3 years 1 month

Berlin, Germany

CTO & co-founder

TimberBase

TimberBase.com is a global marketplace for the digital timber trade.
Building an engineering team from scratch to 7 people.
Building a timber trading platform vision together with stakeholders.
Aligning the tech team with the company vision and setting up delivery processes according to ever-changing market requirements. Achieved predictable releases with trustable delivery estimations.
Developing roles and levels requirements. Coaching team members to perform and grow.
Building healthy engineering habits - agile, code review, git flow.
Fostering best practices discussions. Raising the bar for clean architecture that reflects business needs.
Tech Stack: TypeScript/JavaScript, React, Redux, NoCode/LowCode, AWS, Git, Postgres, Kotlin, CI/CD, Terraform.

Sep 2017 - Sep 2020

3 years 1 month

Berlin, Germany

CTO & co-founder

Uberblick

Uberblick is an internal communication app for hotels.
Building the startup from scratch. Starting with 2 co-founders and a PowerPoint presentation Uberblick has grown into 15 people company in 2.5 years.
Hiring and growing engineering. Retaining talents.
Building and rolling out the first MVP (Web+iOS+Android) in 3 months (from zero to production).
Setting up agile processes together with the team.
Developing the product roadmap.
Tech Stack: JS, Redux, React-Native, Expo, AWS(Elastic Beanstalk, S3, etc), Kotlin, JOOQ, WebSockets, Git, Postgres, Firebase.

Jan 2014 - Sep 2017

3 years 9 months

Berlin, Germany

Software Architect

Bonial International Group

Joined Bonial as an iOS developer and eventually led a team of iOS, Android, and React Native developers as part of the company's startup incubator initiative.
Designing systems and software architecture for a suit of company products (established and experimental).
Fostering clean architecture patterns and coding best practices (CI, DDD, code conventions, etc).
Interviewing developers.
Tech Stack: Xcode, Swift, Git, React-Native, VIPER, Redux, AWS, Couchbase, TDD, DI, CI.

Jun 2011 - Dec 2013

2 years 7 months

Kyiv, Ukraine

CTO & Founder

asdCode Mobile Development Agency

Managing team of 4 developers (Asana, JIRA).
Communication with customers, requirements, estimation, project management.
Architecture, implementation, and testing.
Tech Stack: Xcode, Objective-C, Cocoa Touch, Foundation, UIKit, MapKit, Git.

Apr 2010 - Dec 2013

3 years 9 months

Kyiv, Ukraine

CTO & co-founder

iStat24 Call-Tracking

Managing team of 4 developers.
Giving ~20 presentations at industry conferences, from 20 to 400 people audiences over two years.
Customer development, following lean startup principles.
Team management, project strategy, architecture.
Introducing Scrum to the team.
Communicating with customers.
Tech Stack: AWS, Perl, Ruby (RoR), MySQL/PostgreSQL, Redis, JIRA, Scrum.

Jun 2006 - Oct 2012

6 years 5 months

Kyiv, Ukraine

CTO & co-founder

Vint.com.ua e-commerce store

Singlehandedly created an e-commerce shop company from scratch.
Developing website, back-office, internal ERP.
Hiring and managing team (up to 10 employees).
Online marketing, accounting, protecting from DDoS attacks, operations.
Creating iOS and Android App.
Tech Stack: Xcode, Objective-C, FreeBSD, Apache, Perl, MySQL, Html, CSS.

Mar 2005 - Jun 2006

1 year 4 months

Kyiv, Ukraine

Full-stack Developer

LND Web Agency

Developing websites, designing database structure, working closely with the sales department.
Tech Stack: Perl, MySQL, Apache, JS, Html, Unix.

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Retail, Tourism, Government and Administration, Agriculture, and Healthcare.

Information Technology

Retail

Tourism

Government and Administration

Agriculture

Healthcare

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Operations, Marketing, Project Management, and Customer Service.

Information Technology

Product Development

Operations

Marketing

Project Management

Customer Service

Summary

AI engineer and engineering leader with 19+ years of software experience and 3+ years shipping production GenAI systems. Former CTO at multiple startups — one acquired by UFP (NASDAQ).

Deep hands-on expertise in LLM/RAG/voice AI: I build RAG pipelines, agentic workflows, MCP servers, AI voice systems (OpenAI Realtime API, AWS Nova Sonic, ElevenLabs, FreeSWITCH/VoIP), and LLM evaluation frameworks. Recent projects include an AI hotel concierge (SuitePad), an AI voice receptionist for German doctors (DocDolittle), enterprise AI workflows for insurance (Alteos), and a Telegram chatbot helping Ukrainian refugees navigate German bureaucracy.

Full-stack capable across Node.js, TypeScript, Python, React, PostgreSQL, and AWS. I work end-to-end, fast, and at a senior level — independently or embedded in your team.

Currently available for freelance engagements in Berlin and remotely.

Skills

Ai / Genai: Rag Pipelines, Llm Apps, Mcp Servers, Agentic Workflows, Ai Voice Systems (Openai Realtime Api, Aws Nova Sonic, Elevenlabs, Freeswitch/Voip), Llm Evaluation Frameworks, Ai Strategy Consulting, Langchain, Langsmith, Langfuse, Mastra, Vercel Ai Sdk, Openrouter, Aws Bedrock, Azure Openai, Google Vertex Ai

Backend: Node.Js, Typescript, Python, Ruby On Rails, Java, Kotlin

Frontend: React, React Native, Tailwind Css

Databases: Postgresql, Supabase, Redis, Dynamodb, Firebase, Pgvector, Pinecone

Cloud & Infra: Aws (Fargate, Bedrock), Docker, Terraform, Vercel, Serverless

Monitoring & Observability: Datadog, Sentry, Langfuse

Engineering Leadership: Fractional Cto, Team Setup & Hiring, Architecture Decisions, Code Review Culture, Agile Processes

Languages

Ukrainian

Native

English

Advanced

German

Intermediate

Education

Sep 2000 - Jun 2005

Kyiv Polytechnic Institute

Master of Science (MS) · Computer Science · Kyiv, Ukraine

MS in Computer Science. Focused on software engineering, algorithms, and system design.

Statistics

Experience

Total positions 14

Experience in Information Technology 15 y

Avg length 2 y 8 m

Longest experience 6 y 4 m

Global Experience

Countries worked in 2 (Germany, Ukraine)

Primary country Germany

Expertise

Recent roles AI Engineer (Freelance), GenAI Workshop Author & Trainer (Freelance), AI Engineer / Founder (Volunteer)

Main industries Information Technology, Retail, Tourism

Main business areas Information Technology, Product Development, Operations

Qualifications

Highest degree Master

Profile

Created

January 2024

Last Update

June 2026

Need a freelancer? Find your match in seconds.

Try FRATCH GPT

Frequently asked questions

Have questions? Find more information here.

Where is Viktor based?

Viktor is based in Berlin, Germany.

What languages does Viktor speak?

Viktor speaks the following languages: Ukrainian (Native), English (Advanced), German (Intermediate).

How many years of experience does Viktor have?

Viktor has at least 21 years of experience. During this time, Viktor has worked in at least 7 different roles and for 14 different companies. The average length of individual experience is 2 years and 6 months. Note that Viktor may not have shared all experience and actually has more experience.

What roles would Viktor be best suited for?

Based on recent experience, Viktor would be well-suited for roles such as: AI Engineer (Freelance), GenAI Workshop Author & Trainer (Freelance), AI Engineer / Founder (Volunteer).

What is Viktor's latest experience?

Viktor's most recent position is AI Engineer (Freelance) at Empion.

What companies has Viktor worked for in recent years?

In recent years, Viktor has worked for Empion, Dolittle AI, DocDolittle, Alteos, and SuitePad.

Which industries is Viktor most experienced in?

Viktor is most experienced in industries like Information Technology, Retail, and Tourism. Viktor also has some experience in Agriculture, Government and Administration, and Healthcare.

Which business areas is Viktor most experienced in?

Viktor is most experienced in business areas like Information Technology, Product Development, and Operations. Viktor also has some experience in Marketing, Project Management, and Customer Service.

Which industries has Viktor worked in recently?

Viktor has recently worked in industries like Information Technology, Agriculture, and Government and Administration.

Which business areas has Viktor worked in recently?

Viktor has recently worked in business areas like Product Development, Information Technology, and Operations.

What is Viktor's education?

Viktor holds a Master in Computer Science from Kyiv Polytechnic Institute.

What is the availability of Viktor?

Viktor is immediately available full-time for suitable projects.

What is the rate of Viktor?

Viktor's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.