Oleksii Y.
Rating
Language proficiency level
Skills and abilities
Programming
Services
Mobile development
Portfolio
- All works 10
- Databases & SQL 1
- Web Programming 1
- Data Parsing 6
- Data Processing 1
- Enterprise Resource Planning (ERP) 1
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250 USD Dashboard for customer and product analytics for the B2C segment
Data ProcessingDevelopment of an analytical report that includes processing raw data in #DWH and visualizing complex business metrics.
Key functionalities:
— Geographic Insights: interactive maps of warehouses and distribution centers;
… — Operational Analytics: monitoring order statuses, analyzing the share of canceled and returned orders;
— Demographics & Sales: cross-analysis of brands and categories by age groups and gender of customers.
Technical part:
— Writing complex SQL queries in BigQuery;
— Cleaning dirty data (processing text null values, normalizing cities).
— Creating #metrics in Looker Studio for dynamic grouping (Age Buckets, ARPU, etc.).
The tool allows the business to see not only "how much we earned" but also "who our customer is" and the load on logistics centers.
#BigQuery, #SQL, #LookerStudio, #DataVisualization, #Analytics, #BusinessIntelligence
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350 USD ETL pipeline for forecasting (ERP -> BigQuery -> Power BI)
Enterprise Resource Planning (ERP)#Data-Platform for automating procurement forecasting in a manufacturing company.
Complete development from scratch: architecture design, building #ETL pipeline, integration with #ERP, and setting up an analytical dashboard.
… Data integration:
— connection to ERP via #REST API
— incremental data loading while preserving history
— API error handling (retry, logging)
— integration of ARIMA model (#R-script) with BigQuery
Storage and processing:
— design of #DWH in BigQuery
— calculation of product balances by warehouses
— transformation of raw data into analytical tables
Automation:
— launching #ETL processes on schedule (#GCP Cloud Scheduler)
— nightly #pipeline: data update —> model execution —> report update
Visualization:
— building new and adapting existing dashboards in Power BI for analysis of balances and forecasts
Features:
— replacement of manual accounting in Excel
— stable daily data updates without manager involvement
— minimized data discrepancies between ERP and #BI after extensive testing
Stack: #Python, #BigQuery, #GoogleCloud, #PowerBI, #RScript, #REST, #Docker
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750 USD Work Accounting System (PWA) with Admin Panel and PDF Reports
Web Programming#PWA application for internal use in a Norwegian construction company.
Full development from scratch: UX/UI design, #Frontend and #Backend.
… Backend:
— development of the system on Django + PostgreSQL
— designing the database structure
— processing and storing data on completed work
Frontend:
— implementation of the interface (HTML, CSS) based on custom design (Figma)
— #mobile-first approach (PWA for use without installation)
Functionality:
— accounting for completed work (time, tasks, details)
— employee work through the mobile interface
— data synchronization between users
Admin panel:
— control and verification of completed work
— management of projects and employees
— automatic generation of daily #PDF reports
Features:
— system optimized for use in field conditions by employees (minimum number of actions for filling out reports)
— #production solution used in real work
Stack: #django, #PostgreSQL, #HTML/CSS/JavaScript, #JavaScript, #Figma.
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101 USD Parser auto.ria.com (+ phone numbers)
Data ParsingParser that collects all active cars from auto.ria.com, + phone numbers of sellers. Data is stored in MySQL.
Stack:
* Python (Requests, Beautiful Soup 4)
… * MySQL.
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41 USD Parser of listings from realtylink.org
Data ParsingMy task was to create an asynchronous real estate listings scraper. The data is stored in a JSON object.
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45 USD ETL pipeline
Databases & SQLMy task was to create an ETL process that loads data from a .CSV file, transforms and cleans it, loads it into a PostgreSQL database, and several SQL queries for analysis. Also, for convenience, the cleaned data is stored in a .CSV.
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45 USD Car parser from auto.ria.com
Data ParsingMy task was to create a parser for a specific car brand and a Telegram bot that will notify the channel about new listings for the sale of this car. If the price of the car changes, the bot informs about it. Each listing was stored in a local database.
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45 USD Parser Advertisements from Olx
Data ParsingProgram for data parsing from “olx.ua/”.
The console enters a link to the category of ads from which you need to get information, after which data collection begins. The following data were collected: name, category, price, number of reviews, date, area and link to the current announcement.
… All information is added to the database (PostgreSQL).
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34 USD Parser reviews from eldorado
Data ParsingThe program collects all reviews from the eldorado.ua store products and collects data in json.
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45 USD Parser with data storage in XML file
Data ParsingMy task was to create an online store parser that will store all the data in the XML file. Parser collected products from different categories that are available, and added only those that are not yet in the base.
Reviews and compliments on completed projects 9
31 December 2025
169 USD
Development of Data Platform solution and automation of forecasting (ERP -> DWH -> Power BI)
Olexiy is a attentive and client-oriented specialist. He did an excellent job with setting up the API exchange and writing a custom script for our needs. I recommend him for collaboration.
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26 September 2025
143 USD
Need help with inmport google sheets
Working with this specialist was an excellent experience. He quickly understood the task, delivered everything exactly as agreed, and documented the process clearly with a well-structured solution. Communication was professional, responses were fast and precise, and the project was completed on time without any issues. I can confidently recommend him if you are looking for a reliable and responsible developer.
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6 August 2025
140 USD
We’re looking for a UI/UX designer to create a simple and modern design
Oleksii did a fantastic job designing our internal reporting web app for a construction company. He delivered clean, modern, and mobile-first layouts that perfectly matched our brief – blue/gray/white style, rounded UI elements, and simple structure for login, dashboard, and report submission.
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24 June 2025
130 USD
We need to develop a custom shipping method similar to Omniva
We are very satisfied with the developer’s work on this project. The custom shipping method was implemented in line with our expectations and integrates seamlessly with our existing phone buy-back form.
✅ Parcel terminal list was successfully pulled from Omniva (or a similar service),
✅ The user experience is smooth — customers can easily select a terminal during the phone submission process,
✅ Terminal selection is fully functional and works well both in dropdown and interactive mode (if map-based was used),
✅ The optional phone number input feature was also included and works properly for tracking and/or confirmation SMS.
Communication throughout the project was clear and professional. Deadlines were respected, and the developer proactively offered improvements that enhanced the final result. We appreciated the attention to detail and understanding of our workflow.
Would definitely recommend and work together again on similar custom integrations.
⭐️⭐️⭐️⭐️⭐️
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11 June 2025
40 USD
Adding new features and improvements to the XML feed Product project.
Oleksii is a smart and reliable programmer. He quickly understood the technical requirements and delivered exactly what I needed. Communication was easy and professional, and the work was done on time. Highly recommended!
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12 May 2025
80 USD
Adding new features and improvements to the XML feed Product project.
Absolutely Outstanding Experience!
Oleksii was incredibly patient and professional throughout the entire project. We had several requests and changes along the way, and he handled everything with calm, precision, and excellent communication. His technical knowledge and dedication are top-tier. We are truly grateful for his work and will definitely be hiring him again for future tasks. Highly recommended!
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25 April 2025
120 USD
Automate XML Feed Product Update for WooCommerce
Working with Oleksii has been an excellent experience. He is extremely patient, detail-oriented, and truly committed to delivering high-quality results. Throughout the project, he communicated clearly and consistently, ensuring every part of the task was completed perfectly. His professionalism and dedication make him stand out—highly recommended for any project!
11 March 2025
23 USD
Parsing
A good approach to work, diligently and on time completed the parser.
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7 January 2024
11 USD
Software to save screenshots from the site
Very pleased with the work and the approach to details. I'm glad I got to Alexy because the work was done quickly and as it was right.
Activity
| Latest proposals 10 | Budget | Added | Deadlines | Proposal | |
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Olx notification
90 USD
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Parsing supplier prices
113 USD
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Development of Data Platform solution and automation of forecasting (ERP -> DWH -> Power BI)
169 USD
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Looking for experienced developer
4996 USD
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Need help with inmport google sheets
143 USD
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We’re looking for a UI/UX designer to create a simple and modern design
140 USD
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We need to develop a custom shipping method similar to Omniva
130 USD
|
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Adding new features and improvements to the XML feed Product project.
40 USD
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Adding new features and improvements to the XML feed Product project.
80 USD
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Automate XML Feed Product Update for WooCommerce
120 USD
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