Neosfera SA

Solutions Architect

EPAM Systems

Google project:
Designed and contribute into a robust, automated migration system to transfer both third-party and proprietary Google libraries from public sources to Google's internal repositories. This streamlined process facilitated better access and management of critical 3d party libraries, provide a clear way for Google colleagues to use them.
 - Collaborated with cross-functional teams to identify, analyze, and prioritize libraries for migration, ensuring seamless integration into Google's development processes.
 - Developed custom scripts and tools to optimize and accelerate the migration process, minimizing disruption to ongoing projects.
 - Conducted thorough testing and validation to ensure the accuracy and reliability of migrated libraries, preserving their functionality and compatibility across diverse platforms.

Lead Software Engineer on Google account

Specific-Group Belarus

German neo-bank
Cutting-edge API layer, bridging the gap between the bank's internal infrastructure and third-party users. My dual role enabled me to provide technical expertise and leadership for development stream, ensuring the timely delivery of a high-quality, well test & documented user-friendly REST- API solution.
 - Dozen microservices was introduced, splited from legacy monoliths, how it can be delivered in modular way. 
 - Identified and resolved performance bottlenecks, optimizing both the internal structure and interaction with external systems. 
 - Configured Jenkins and set up jobs for CI and fully automated the application build & deployment process, and integrated static code analysis tool to enhance the development process. 
 - Design a sophisticated and user-friendly API, providing seamless integration and an exceptional user experience. 
 - Prepare and present PoC and presentation during sale or new customers onboarding

Technical Lead

Programming Components

SCELL, SUniText - both web-based & desktop spreadsheet\document editors.
 - Introduce ANTLR to parce .xlsx and .docx files and build syntax trees. Build specific document model for current file.
 - Design and implement "Formula engine" for treat Excel formulas like Excel does.   
 - Resolved a number of performance issues related to calculating the big amount of cells (in some cases increased performance in tens times and more) and OS-specific issues (like a corrupted mouse pointer on MacOS).
 - Introduce architecture for skinny web document editor with specific web document model and optimize client-server communication

Senior Java Developer / Team lead

Global Network Ltd.

Globalnetwork - push notifications high load advertising serving platform, traffic reseller, CPA\CPM model.

We launched project from the scratch and reached zero balance. COVID-19 cut of most of clients and
80% of cashflow. We decided to close the project.

Technical aspect:
 - Implement via Java 11, Spring, Netty, Nginx
 - Deal with hight-load: 20k-25k rps with low latency
 - Reduce cloud costs, AWS first, migrated to Digital Ocean
 - Bring the team across the project. 
 - Microservice architecture
Analytical tasks:
- implement new features through a/b-test, measure retention and engagement;
- statistical calculation of revenue changes from technological changes in the product;
- Grafana for visualisation.

Co-Owner, CTO

GRIZZLY digital company

I've created a development department: Java and PHP teams, UI\UX designers. Setup (pre)sale, development and delivery process. Negotiations with the customers, team training & hiring
As a co-owner I was responsible for definition of goals, technologies, 
-  KPIs\ROI
- 30+ projects delivered. If was a 6-12 months project via 2-3 members team. 
- 50+ PoC created
- Stack: Java, JS, PHP

Co-owner, Chief technology officer

oDesk

2 long-term partnerships & 5+ project successfully finished
Variety of Java-projects in different fields: Ad serving, e-commerce
 Full development life cycle
 Spring stack
 Cloud deployment

Java developer (Freelancer)

CIB group of companies

CIB jrec is a Java-based rich text editor component, which can be integrated easily into masks and third-party applications using the interface concept known from other CIB modules.
Java Developer

Java Software Engineer

AdServerSoft / AdServerBeans

Java/Flex developer, DBA
An open source ad server (AdServerBeans): at least 6 startups were based on it. At the peak we were making around 25K USD per month (total) \ 100k request per hour

Junior Java Developer

Senior Software Engineer with 10+ years of experience, blending strong technical expertise with exceptional soft skills to deliver outstanding results. Experienced in leading development teams, mentoring, and driving projects from inception to go-live and beyond. As a software architect and engineer, I excel in creating large-scale transactional distributed systems and exceeding customer expectations.

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