Former professor of biophysics turned Python developer in the Data Science domain, skilled in Mathematics, Statistics, and Physics, I am confident my work will exceed expectations.
Specializing in:
- Projects pertaining to Statistical/Data Analysis, Machine Learning, Mathematics, and Theoretical Physics.
- Open AI machine learning and natural language processing (NLP) techniques to analyze documents and respond user queries in a chatbot.
- Consulting Businesses through Financial/Inventory/Customer Data Analysis and Forecast.
Skills that pertain to this project are the following:
- Excellent Communicator
- Problem-solver
- Attention to detail
- Analytical Thinker
Analysis Skills:
- Multivariate Statistical Analysis
- Regression Analysis
- Factor Analysis & Sensitivity Analysis
- Bayesian Analysis
- Monte Carlo Analysis
- Game Theory
- Experimental Designs
- Time Series Analysis
- Forecasting
- Statistical Quality Control
- Spatial Data Analysis
- Structural Equation Modeling.
Program Proficiency:
- R programming
- Rapidminer
- Matlab
- Python
- Microsoft Excel.
I do not outsource my work; I am a one-man team.
Mostly available from 9 a.m. To 7 p.m. Local time (GMT+2).
Statistical Analysis
R
Mathematics
Python
Data Science
Model Optimization
Data Visualization
Microsoft Excel
Machine Learning
RapidMiner
Chatbot Development
Natural Language Processing
Artificial Intelligence
Neural Network
Large Language Model
Serhii S.
Slavutych, Ukraine
$50/hr
5.0
6 jobs
I help companies turn scattered AI experiments into one working system their team actually owns — and then I train the team to run it without me. 15 years as a FinTech business analyst, now shipping AI automation and business process automation with Claude.
Most AI projects stall because the builder doesn't understand the business. I'm the opposite: a business analyst who ships. I map the process first, build the automation, hand it over in plain English, and coach your team so AI adoption actually sticks.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
WHAT I HELP YOU WITH
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
• AI consulting & AI strategy — AI readiness assessment, AI adoption roadmap, machine learning use-case selection, and tool selection (Claude vs ChatGPT vs Copilot) for non-technical teams.
• Business process automation — process mapping, process optimization, email automation, and end-to-end workflow automation that removes manual, repetitive work.
• AI automation & AI agent development — AI agents, AI assistants, and AI chatbots with memory, tools, and multi-step reasoning.
• AI implementation & API integration — connecting Claude and the OpenAI API to your CRM, email, spreadsheets, databases, and internal tools.
• RAG systems & natural language processing (NLP) — retrieval-augmented generation so your AI answers from your own documents and data.
• AI adoption, enablement & training — team workshops, SOPs, and change management so AI adoption lasts after the project ends.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
TOOLS & PLATFORMS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Claude & Claude Code · OpenAI / ChatGPT API · n8n · Make com · Zapier · Python · Airtable · Google Workspace · HubSpot & other CRMs · REST APIs & webhooks · vector databases for RAG. I build production automation, not happy-path demos — with error handling, documentation, and clean handover.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
INDUSTRIES
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
FinTech, financial services, trading, iGaming, SaaS, and professional services. 15 years translating business requirements in regulated, audited environments — so AI automation matches how your business really runs.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
HOW I WORK (discovery → build → handover → train)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
1. Discovery — a short call + audit of your highest-friction workflow.
2. Build — one automation or AI agent built end-to-end with Claude and n8n / API integration.
3. Handover — documented in plain-English files your team can read, modify, and own (not a node graph nobody understands).
4. Train — I coach your team to run and extend it. I teach AI to non-technical people every week, so the adoption is real, not a slide deck.
I'm not the developer who drops a black box, and I'm not the consultant who only makes slides. I'm the partner in the middle: I think like a business analyst, ship like a builder, and hand over like a teacher.
If your team has the AI tools but no system — let's fix the system. Tell me the one workflow that, if it ran itself, would free up your team the most, and I'll show you how I'd automate it. Happy to do a quick live demo on your real process before you commit to anything.
AI Consulting
Business Process Automation
AI Agent Development
AI Implementation
Automation
API Integration
ChatGPT
Generative AI
Artificial Intelligence
AI Chatbot
n8n
Make.com
CRM Automation
Business Analysis
Retrieval Augmented Generation
Prompt Engineering
Digital Transformation
Oleksii S.
Chernigiv, Ukraine
$25/hr
4.9
199 jobs
𝗜𝗳 𝘆𝗼𝘂 𝗻𝗲𝗲𝗱 𝗵𝗶𝗴𝗵-𝗾𝘂𝗮𝗹𝗶𝘁𝘆 𝗮𝗻𝗮𝗹𝘆𝘀𝗶𝘀 𝘄𝗶𝘁𝗵 𝗰𝗹𝗲𝗮𝗿 𝗱𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝘃𝗶𝘀𝘂𝗮𝗹𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝗶𝗻𝘀𝗶𝗴𝗵𝘁𝘀, 𝗺𝗲𝘁𝗵𝗼𝗱𝗼𝗹𝗼𝗴𝗶𝗰𝗮𝗹 𝘀𝘂𝗽𝗽𝗼𝗿𝘁/𝘀𝗲𝗰𝗼𝗻𝗱 𝘃𝗶𝗲𝘄 𝗳𝗼𝗿 𝗰𝗼𝗺𝗽𝗹𝗲𝘅 𝗮𝗻𝗮𝗹𝘆𝘀𝗶𝘀/𝗽𝗿𝗼𝗯𝗹𝗲𝗺𝘀, 𝗰𝗹𝗲𝗮𝗿 𝗽𝗮𝘁𝘁𝗲𝗿𝗻 𝗮𝗻𝗱 𝗶𝗻𝘀𝗶𝗴𝗵𝘁𝘀 𝗳𝗿𝗼𝗺 𝘆𝗼𝘂 𝗱𝗮𝘁𝗮 - 𝘆𝗼𝘂'𝘃𝗲 𝗰𝗼𝗺𝗲 𝘁𝗼 𝘁𝗵𝗲 𝗿𝗶𝗴𝗵𝘁 𝗽𝗹𝗮𝗰𝗲.
rich experience;
attention to details;
timely completion;
clear insights,
basic and advanced analysis/statistics/visualisation for business and academic purposes;
12 years experience, 200+ successful projects, each client was satisfied.
I serve both 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗮𝗻𝗱 𝗮𝗰𝗮𝗱𝗲𝗺𝗶𝗰 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 providing analysis based on the most suitable approaches and tests.
𝗜 𝗮𝗹𝘄𝗮𝘆𝘀 𝘁𝗿𝗮𝗻𝘀𝗳𝗼𝗿𝗺 𝗱𝗮𝘁𝗮 𝗶𝗻𝘁𝗼 𝗮𝗰𝘁𝗶𝗼𝗻𝗮𝗯𝗹𝗲 𝘀𝘁𝗼𝗿𝗶𝗲𝘀 𝘄𝗶𝘁𝗵 𝗰𝗹𝗲𝗮𝗿 𝗱𝗲𝗰𝗶𝘀𝗶𝗼𝗻 𝗽𝗼𝗶𝗻𝘁𝘀. All my clients receive comprehensive support: full documentation, visualization, and ongoing assistance.
In addition for 𝗮𝗰𝗮𝗱𝗲𝗺𝗶𝗰 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗜 𝗽𝗿𝗼𝘃𝗶𝗱𝗲 𝗿𝗼𝗯𝘂𝘀𝘁 𝗮𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝗮𝗹 𝘀𝘂𝗽𝗽𝗼𝗿𝘁 𝗳𝗼𝗿 𝗿𝗲𝘀𝗲𝗮𝗿𝗰𝗵 𝗶𝗻𝗰𝗹𝘂𝗱𝗶𝗻𝗴:
Clinical trial analysis;
Dissertation and thesis statistical analysis;
Preparation for peer-reviewed publications and handling reviewers’ comments;
Research design consultation;
Complex analysis according to all academic standards with documentation.
𝗔𝗻𝗮𝗹𝘆𝘀𝗶𝘀 𝘁𝗼𝗼𝗹𝘀: R (primary),Excel, Python, SPSS, Stata, EViews Visualization: Excel, Power BI, Tableau.
𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗮𝘁𝗶𝗼𝗻: Survey Analysis, SEM, CFA, EFA, Multigroup CFA, Regression Analysis, Moderation, Mediation, Time Series, Predictive Modeling, Cluster Analysis, Churn/retention, Sales forecasting, demand prediction, Market segmentation, Customer behavior analysis, Performance metrics, KPI development and many other.
I consistently go beyond the initial scope to extract maximum insights, identifying patterns that provide additional value. Every analysis includes clear explanation of methodologies and results, ensuring you can confidently use the findings.
𝗟𝗲𝘁'𝘀 𝗱𝗶𝘀𝗰𝘂𝘀𝘀 𝘆𝗼𝘂𝗿 𝗻𝗲𝗲𝗱𝘀. 𝗜 𝗮𝗹𝘄𝗮𝘆𝘀 𝘄𝗶𝗹𝗹 𝗳𝗶𝗻𝗱 𝗮 𝘄𝗮𝘆 𝘁𝗼 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂.
Tell us what you need. Create your own job post or generate one with AI then filter talent matches.
Hire top talent fast
Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.
Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
Payment simplified
Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.
Don't just take our word for it
“Upwork provides an umbrella-level of security. I can see a talent’s work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.”
KD
Kim Darling
Emerald Tiger
“Upwork is the best platform to hire skilled professionals when we're not looking for a full-time employee. All the companies in our portfolio use Upwork to find talent across a wide range of fields.”
DM
David Merry
Kinetic Investments
“Our very specific requirements can be a challenge—With Upwork, we’re able to access a bigger community to ensure the success of our projects.”
KK
Katja Krohn
Summa Linguae
How do I hire a Quantitative Analyst in Ukraine on Upwork?
You can hire a Quantitative Analyst in Ukraine on Upwork in four simple steps:
Create a job post tailored to your Quantitative Analyst project scope. We'll walk you through the process step by step.
Browse top Quantitative Analyst talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top Quantitative Analyst profiles and interview.
Hire the right Quantitative Analyst for your project from Upwork, the world's largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a Quantitative Analyst?
Rates charged by Quantitative Analysts on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a Quantitative Analyst in Ukraine on Upwork?
As the world's work marketplace, we connect highly-skilled freelance Quantitative Analysts and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Quantitative Analyst team you need to succeed.
Can I hire a Quantitative Analyst in Ukraine within 24 hours on Upwork?
Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Quantitative Analyst proposals within 24 hours of posting a job description.