Kiryl Saldatkin

AppSciense is international B2B retailer with 300 employees and team 5 analytics. It's developing SaaS platform for corporate clients to improve experience during order process.

Manage data from PostgreSQL. Perform pre-processing with SQL and Python.

Offered to build 3-level DWH:

• 1 level - raw data;
• 2 level - simple ETL processes to formalise data types and pre-processing, normalise data-structure;
• 3 level - wide tables for dashboards.

Designed and developed data pipelines to acquire, clean and process data. ETL pipelines runs on AWS Lambda.

Configured and deployed to production Git for rest analytics team.

Implement code-review culture.

Performed:

• Ad-hoc reports.
• Wide-tables for visualisations.
• Utilise data visualisation to present and explain complex data sets with Metabase.
• Analyse time-series, transportation resources, stock balance.
• Deployed prediction analytics model for sales with moving average and ml-algorithm (linear regression).

Skillset:

Python, Pandas, Numpy, SciPy, Scikit-learn, Matplotlib, Seaborn, PostgreSQL, Metabase, Git, AWS.

Deeplay is a product company with more that 1000 employees worldwide. Company develop robot animators for intellectual games such as poker, bridge, etc. to improve engagement and retention.

I managed big data with ClickHouse and Python: preprocessing, check statistic hypothesis, dependency research, calculate business metrics and going deeper for insights.

Performed:

• Ad-hoc analytics.
• Metrics, calculations, sql-queries (agg, stats func).
• Custom complicated visualizations with different level of details for different experience customers.
• Critical tasks for C-level customers.
• Validating A/B hypothesis.
• Research analysis: complex dependencies users metrics on statistical significance edge.

SQL: group by, join, window functions.

Git: branches, resolve conflicts, code review.

Skillset:

Python, Pandas, Numpy, SciPy, Matplotlib, Seaborn и SQL ClickHouse, Tableau, PowerBI.

Yandex International product IT company counts more than 21k employees. Develop own products in different verticals to provide users more possibilities around the world.

• I used Python for data processing and analysis.
• Dealt with preprocessing, visualization, data analysis, A/B tests, etc.

Performed:

• Research on the reliability of borrowers - analysis of bank data. Investigate whether the marital status and the number of children of the client affected the fact of repaying the loan on time basing on the client’s solvency statistics.
• Analysis of the real estate market. Determine the real estate market value and typical parameters of apartments using data from the Yandex.Realty service
• Detection of a favorable tariff for a telecom company, Based on the data about the mobile operator's customers, analyze the behavior of customers and search for an optimal tariff.

Skillset:

Python, Pandas, Numpy, PyMystem3, lemmatization, Matplotlib, SciPy, A/B test.

Launched project from the scratch and reached self-sufficiency with team of 5.

Unfortunately COVID-19 cut most clients and 80% cashflow. We decided to close the project.

Performed:

Analytical tasks:

• Implement new features through A/B-test.
• Measure retention and engagement.
• Statistical approach to revenue changes from technological changes in the product.
• SQL to export raw-data to clients.

Platform.io - SaaS Custom White-Label Programmatic Stack (DSP, SSP, DMP, Ad Exchange) with 200+ employees.

Performed:

• Implemented systems and procedures to increase sales.
• Developed compelling presentation decks to gain approval for ideas and communicate results.
• Negotiated and closed long-term agreements with new clients in assigned territory.
• Achieved sales goals and service targets by cultivating and securing new customer relationships (B2B, B2C).
• Identified and pursued valuable business opportunities to generate new company revenue and improve bottom line profit.

Created a full-cycle web development agency in according services:

• Web pages development.
• SEO
• Paid advertising.
• Clients support.

In 2014 were in top 20 digital business in Belarus marketing rating.

Performed:

• Managed financial, operational and human resources to optimize business performance.
• Secured sufficient funds to cover business obligations by tracking expenses and budgeting accurately.
• Defined company roles and responsibilities to establish and enhance processes.
• Developed innovative sales and marketing strategies to facilitate business expansion.

Created remote web development team of 25 people for freelance projects. As Team and Project leader I performed:

• Search for new clients.
• Customer interview.
• Pre-sales activities: commercial proposal, presentation, work with objections.
• Technical documentation.
• Project: planning, scheduling, management, communication, presentation to client.
• Issue resolution, change management, risk management.
• PHP development, code monitoring, QA.