Life Line Screening

Data engineering at a company that screens and helps prevent around 700,000 people yearly from diseases such as stroke and heart disease

Sr Data Engineer

OmniData

Designed and built data platforms/pipelines for healthcare and other mission-critical sectors; optimized performance and integrated APIs with Spark, Python, and SQL; mentored teammates and authored comprehensive docs

OmniData was acquired by Fresche Solutions in 2025. OmniData Insights is a leading Microsoft-focused partner specializing in Analytics, AI, and Cloud Modernization.

Senior Data Engineer

Playtika

- Led a team of 3 data engineers, driving technical planning and architecture discussion, which resulted in the successful delivery of 27 marketing data pipelines in a dynamic, fast-paced environment.
- Architected highly scalable data pipelines to process real-time and batch petabyte-scale datasets for 10+ event types used by executives to support business decisions and fuel the main dashboard with key business metrics such as DAU, Installs, Payments.
- Influenced product and cross-functional (engineering, marketing, strategy) teams to identify data opportunities and gaps, which led to exceeding the SLA in data quality by increasing data accuracy to 99.99%.
- Improved and maintained Tableau reporting for C-level executives across the organization.

APPREAL contracted me. Playtika is one of the world's pioneers in mobile gaming, with a central office in Israel and 4,000 people.

Senior BI/DWH Engineer

Gamesys

- Collaborated with the Product Owner and contributed approximately 20 new features, including new metrics for the marketing data-driven applications, utilizing DB2, Docker, SQL, and Python.

Senior SQL Engineer

DB Best Technologies

- Developed cost-effective data pipelines in Databricks / Azure for a world-recognized marketing agency to calculate marketing metrics for users, such as CTRs, conversion rates, and visits, by aggregating data from different marketing tools.
- Architected and implemented from scratch logging, monitoring, and alerting flows for Data Pipelines to triage issues and resolve them in Azure, using Databricks, Azure Monitor, and Log Analytics.
- Owned the end-to-end technical implementation of CICD processes from beginning to production in Azure Data Platform, which led to reducing the nightly incidents from 8 per month to 1 per month.

In 2021, DB Best was split, and Amazon acquired one part of it. The second part moved to ABCloudZ.

Database Developer

LLC "Alef Elektro-Komplekt"

- Led a team of 7 people, coordinating their duties.
- Developed and scaled the marketing part of the business, including website, SEO/organic traffic, and Google Ads, which led to 20 daily leads for the retail store.

Project Manager

UBC Corporation

- Led a project for a TOP-8 bank in Ukraine
- Held critical roles as a Senior Consultant, delivering four major successful projects in the Banking, Automotive, and Logistics industries by building reports, dashboards, and operational warehouses using SQL Server, IBM Cognos BI/TM1, and Oracle.

UBC Corp is one of the leading companies in the Ukrainian and Kazakh markets in business consulting.

Senior BI Consultant

My public work is here: https://linktr.ee/4iurchenko

I am a data engineer who thoroughly enjoys my work. My primary goal is to fuel business decisions with high-quality data by building Data Platforms and Pipelines. I am fluent in Spark, SQL, and Python, which enables me to effectively focus on business problems. My target role is Data Engineering in a proactive company that requires robust data with potential for AI applications. I am very familiar with Healthcare, Microsoft Azure (and particularly Fabric), and Marketing.

📌 My EMAIL 📩: 4iurchenko@gmail.com
Please DM me when you think I can assist you as a Sr. Data Engineer in solving your data challenges efficiently. 🤝 

How can I make a difference for your company?

1️⃣ Business first. My primary focus is on how my delivery is suitable for stakeholders. Is it convenient for BA / Product? Is it accurate? Is it future-ready? What are the project's priorities and constraints? I tend to ask 1-3 critical questions before implementation. If needed, I will add a pros and cons/tradeoffs story to prevent misunderstanding. Then, I am fully committed to the results we decided on.

2️⃣ Architecting & Delivering. I have a solid grasp of fundamentals, data concepts, and diagramming. Additionally, I am fluent in SQL and Python coding. So, I can flexibly switch between coding-focused tasks and higher-level system design challenges. For example, in the morning, I plan to present the architecture diagram for the PoC in LucidChart for the new AI-driven pipeline. After lunch, I will refine the PySpark pipeline to process a dataset of over 1 billion records. Before the evening, I may investigate the production incident and document findings.

3️⃣ Drive to move things further and help others, if they need it. After you talk with me, you will feel the energy. 

THE PROJECTS AND ACTIVITIES I AM PROUD OF
➩ Healthcare Analytics on Azure.
➩ Gaming data warehouse - petabytes of data + incredibly insightful driving data platform with business metrics.
➩ SQL Saturday speaker - 2x selected at a SQL Saturday in San Diego about SQL & Azure Fabric

I am a 2x half-marathoner 🏃. Daily runs are a regular part of my routine, too, as I believe motion is the foundation of a high-quality life.

EXPERTISE
Spark & Databricks · Python · SQL · Microsoft Azure & Fabric · CICD · Data Analysis · Data Modeling · Data Pipelines · Mentoring · Data Quality · Documentation · HL7 / FHIR / OMOP · Metrics Development · Problem-solving · Reporting in Tableau / PowerBI · Unix.

DOMAINS (including)
Marketing · Healthcare · Finance · Logistics

Iurii (Yurri) Iurchenko, FACHDM

Mercury Intermedia

Android App Developer

Pet projects

My pet project which have been released on Play Store, Clients&Visits  bring happiness to users and provide me with a playground to improve my technical skills by experimenting with new tools and combining different technologies.

Android App Developer (Client - BaaS)

Welltech

The product company specializes in creating mobile apps in the field of Health & Fitness, boasting over 200 million downloads and a team of 500+ professionals.

Intellias

Intellias is a leading software engineering company with a team of over 3k employees, providing innovative technology solutions to clients worldwide.

- Collaborated closely with the product and design teams to adapt a previously complex tablet application for seamless usage on mobile phones, achieving a 3x increase in the user base by catering to mobile users.
- Conducted comprehensive code refactoring, employing Constraint Layout and Custom Views for intricate solutions, confirming flawless UI functionality.
- Initiated the transition to Jetpack Compose and Flow, speeding up development through the use of a modern tech stack.

Senior Android App Developer

Daxx Software Development Teams in Ukraine

DAXX, acquired by Grid Dynamics Holdings in 2020, offered the best technology solutions, 1K+ people.

- Conducted project refactoring across Mobile and Android TV platforms, consolidating shared logic into a separate submodule, eradicating code duplication and  leading to a 2x acceleration in development and feature scalability.
- Integrated unit tests and guided Kotlin development, enhancing the product's quality and raising user ratings on the Play Store from 3.8 to 4.1.
- Pioneered and drove streamlined build distribution for the QA  team via Continuous Integration (CI) and Firebase App Distribution, enabling immediate receipt of builds, resulting in a time saving of 20 minutes each day.
- Streamlined the application migration process from billing v2 to billing v3 to meet Play Store upload requirements, guaranteeing seamless functionality and adherence to platform standards.

Ezlo Innovation

Ezlo is a subsidiary of Comodo and partner of MiOS, is a pioneering technology company specializing in advanced smart home solutions and security innovations,  100+ employees.

- Achieved a substantial quality improvement campaign on Crashlytics, elevating it to an impressive 96% through a detailed refactoring initiative for a legacy project. 
- Mentored a small group of developers, enhancing the team's technical proficiency and facilitating the adoption of modern tools, resulting in a 1.5x increase in team productivity. 
- Managed the team's transition to Kotlin, MVVM, and Clean Architecture, ensuring the seamless integration of contemporary technologies resulting in a 2x increase feature delivery.

Android TL App Developer

- Led the successful launch of 2 MVPs using BLE and Mesh Nets technology for smart home solutions, offering valuable insights crucial for steering product development in the right direction.

InTechSoft

InTechSoft company provides outsourcing services in development of web applications, 60+ people

- provided consultation and conducted technical assessments for potential projects on the mobile platform. Facilitated the company in expanding its customer base by diversifying its scope of activities.

Android App Consultant

Apps-O-Rama

Apps-O-Rama is a development consulting company that specializes in providing development solutions for brands, tech companies and startups, 50+ employees.

- Implemented a resources-shared approach for similar 5 applications, reducing development time in 5 times and enabling simultaneous releases through logic decomposition. 
- Engineered and processed the end-to-end development process of 2 mobile applications from scratch to completion (religious social network, audio player).

Seanetix

Seanetix  company provides outsourcing services in development of mobile and web applications, 30+ people.

- Crafted a social network application for mutual aid services, from scratch on the Play Store within a span of 3 months. 
- Revamped the cross-platform application from Titanium SDK to native Android app, resulting in a 25% surge in user base within 3 months; enhanced product quality and reliability, driving exponential growth.

Junior Android App Developer

👋 Greetings! I'm Oleksandr, a 𝑺𝒆𝒂𝒔𝒐𝒏𝒆𝒅 𝑨𝒏𝒅𝒓𝒐𝒊𝒅 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒆𝒓 with a fervor for creating remarkable mobile experiences. 

🚀 Over the past 11 years, I've dedicated myself to native 𝑨𝒏𝒅𝒓𝒐𝒊𝒅 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕, continuously pushing the boundaries of what's possible in the mobile landscape. My journey has continually evolved, involving leadership positions where I directed a committed team of developers. I spearheaded the creation of successful a few MVPs and led the transformation of legacy projects into modern stacks like 𝑴𝑽𝑽𝑴/𝑴𝑽𝑰, 𝑪𝒐𝒎𝒑𝒐𝒔𝒆, 𝑭𝒍𝒐𝒘.

🛠️ My Skills spans a wide range of areas, including:
- 𝑨𝒏𝒅𝒓𝒐𝒊𝒅 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕: playground for creating intuitive, user-centric mobile solutions.
- 𝑲𝒐𝒕𝒍𝒊𝒏: The heart of my coding canvas, enabling me to paint elegant and efficient applications.
- 𝑪𝒐𝒎𝒑𝒐𝒔𝒆 (𝑱𝒆𝒕𝒑𝒂𝒄𝒌): My current muse for crafting dynamic and captivating UIs.
- 𝑴𝑽𝑽𝑴 𝒂𝒏𝒅 𝑴𝑽𝑰: Architecting scalable and maintainable app structures.
- 𝑭𝒍𝒐𝒘 and 𝑪𝒐𝒓𝒐𝒖𝒕𝒊𝒏𝒆𝒔/𝑹𝒙𝑱𝒂𝒗𝒂2: Tackling asynchronous challenges with poise and efficiency.
- 𝑼𝒏𝒊𝒕 𝑻𝒆𝒔𝒕𝒔: Ensuring app reliability and performance through rigorous testing.
- 𝑨/𝑩 𝑻𝒆𝒔𝒕𝒊𝒏𝒈: Implementing data-driven strategies to optimize user engagement and satisfaction.

⚽ Outside the realm of code, you might find me playing in sports like tennis, bowling, billiards, and even conquering slopes with snowboarding.

💬 Interested in collaborating on groundbreaking projects or discussing the evolving landscape of Android development?  Feel free to connect via LinkedIn or contact me directly at 
✉️  𝒂𝒍𝒆𝒌𝒔.𝒑𝒍𝒆𝒌𝒉𝒐𝒗.𝒅𝒆𝒗@𝒈𝒎𝒂𝒊𝒍.𝒄𝒐𝒎.

taplio

The Battle

Iurii (Yurri) Iurchenko, FACHDM

Oleksandr Pliekhov

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