Hi, I'm Oleksandr
I am a Senior Software Engineer with over 15 years of experience building large-scale systems across some of the world's leading tech companies, including Amazon, eBay, Etsy, and EPAM Systems.
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About

I began my career on the business side, but quickly realized my true passion was in creating things that make a difference - software that empowers people and scales globally. That curiosity and drive led me into engineering, where I've since designed distributed video systems for millions of concurrent viewers at Amazon, deployed machine learning–powered ad platforms at eBay, and modernized Etsy's frontend architecture serving millions of creative entrepreneurs worldwide. Today, I'll be collaborating with teams and founders who share ambitious ideas, whether it's scaling systems, optimizing performance, or building thoughtful digital experiences. If it means building something meaningful, I'll be involved.

Work Experience

Amazon

May 2023 - Present
Software Development Engineer
Designed and built high-performance distributed video systems for live content ingestion and global delivery to millions of concurrent viewers. Developed scalable backend microservices in Golang, optimizing video pipelines for latency and reliability with AWS infrastructure. Enhanced resiliency and observability through automated failover, health checks, and real-time telemetry dashboards. Led protocol-level optimizations (HLS/RTMP) that reduced stream latency by 20% and improved global delivery efficiency. Collaborated across data, product, and infra teams to align architecture with user and business requirements.

eBay Inc

August 2020 - April 2023
Staff Software Engineer
Partnered with data science teams to design and deploy machine learning-based ranking models powering Promoted Listings Ads. Built ELT pipelines using Spark, Hive, and Airflow to process and validate massive datasets for algorithmic experiments. Developed and integrated REST APIs within eBay's search infrastructure (Cassini) to support ad personalization and data retrieval. Created real-time dashboards and alerts with Kafka streams, Grafana, and Tableau to monitor search relevance and monetization metrics. Automated data workflows and deployments, reducing pipeline downtime and increasing experimentation velocity by 25%.

Etsy, Inc

October 2017 - March 2020
Staff Software Engineer
Led the design and modernization of Etsy's web frontend architecture, supporting millions of global users. Defined the technical roadmap for React-based UI systems, integrating modern build tools (Vite, Webpack) and GraphQL APIs. Mentored frontend engineers in code quality, performance optimization, and scalable design patterns. Partnered with UX and backend teams to ensure seamless buyer and seller experiences across platforms. Enhanced site performance through bundle splitting, caching, and responsive design improvements.

EPAM Systems

October 2008 - March 2014
Full Stack Software Engineer
Built responsive financial web applications with Angular and Material Design, modernizing legacy systems into cloud-native AWS environments. Developed Node.js backend APIs for real-time analytics and portfolio insights. Advocated for TDD practices, raising test coverage above 90%. Mentored engineers in clean architecture, CI/CD automation, and component reuse. Improved frontend performance by 30% through optimization and code refactoring.

Skills

Go
Java
Scala
Python
React
TypeScript
JavaScript
Node.js
Angular
AWS
ECS
EC2
Lambda
CloudFront
DynamoDB
Spark
Hive
Airflow
Kafka
Docker
Kubernetes
Prometheus
Grafana
CloudWatch
Jenkins
GitHub Actions
GraphQL
Redux
Webpack
Vite
Jest
Cypress
PostgreSQL
Rust
Ruby on Rails
C++
C#
N8N
Web3
Web Scrapping
Automation
My Projects

Check out my latest work

I've worked on a variety of projects, from simple websites to complex web applications. Here are a few of my favorites.

AVA Rafting & Zipline

AVA Rafting & Zipline

This website belongs to AVA Rafting & Zipline, a Colorado adventure company offering guided white-water rafting, zip-lining, rock climbing, fly fishing and other outdoor trips across multiple rivers and mountain locations.

Yokohama Tire

Yokohama Tire

This is the official U.S. site for Yokohama tires, offering product information across performance, passenger, SUV, EV and commercial tire categories, dealer-locators, and company details.

New York Racing Association (NYRA)

New York Racing Association (NYRA)

This site is the official portal for NYRA, the not-for-profit organization running major thoroughbred race tracks in New York, providing race schedules, live streaming, wagering services and event information.

Adore Beauty

Adore Beauty

This is the official site of Adore Beauty, an Australian-owned online beauty store offering over 260 global brands, free shipping, and a wide range of skincare, haircare and cosmetics.

TreeRing Yearbooks (Official Site)

TreeRing Yearbooks (Official Site)

This site is the official platform where schools, students, and families can create, customize, and order personalized yearbooks through TreeRing's web-based system.

Commercial Real Estate Platform

Commercial Real Estate Platform

A leading platform where users can search for, list, or lease commercial properties (office, retail, industrial, land etc.), offering advanced filters, listing tools and broad exposure through its parent company CoStar Group.

WeChalet

WeChalet

A platform that connects travellers with unique homes, cottages and chalets situated in nature-rich settings (originally based in Quebec, Canada) with a focus on outdoor experiences and eco-friendly stays

Socialbnb

Socialbnb

Socialbnb is a travel platform that offers unique accommodations and multi-day experiences where over 85% of the travel price goes directly toward supporting local social or environmental projects

Sonder

Sonder

Sonder provides thoughtfully designed, apartment-style and boutique hotel accommodations across 40+ cities worldwide, combining simple mobile-check-in, designer interiors, and 24/7 support via their app.

Plasmic

Plasmic

Plasmic is a visual, drag-and-drop platform designed for building websites and web apps (including full-stack and internal tools) while allowing you to bring your own code components, data sources, and deployment pipeline.

Typedream

Typedream

Typedream lets you build websites, landing pages, blogs, "link in bio" microsites and simple online stores quickly — all via a drag-and-drop, Notion-style editor without needing to code.

Taskade

Taskade

Taskade is a collaborative productivity platform that combines to-do lists, outlines, mind-maps, real-time collaboration, and built-in AI agents/workflows to help individuals and teams plan, organize and execute projects.

Jambys

Jambys

Jambys is a loungewear brand focused on ultra-soft, unisex "at-home" apparel made from premium fabrics and thoughtful design details. They describe themselves as "performance inactivewear" built for maximum comfort.

Argil.ai

Argil.ai

Argil.ai enables you to generate studio-quality videos in minutes using either your own "AI clone" or one of its generic avatars, with tools to script, edit, and scale video content with minimal camera work.

Phind

Phind

Phind is a specialized AI search platform that delivers code-centric answers with web-citations and integrates with development workflows — essentially, "search + AI" optimized for software engineering.

Hexomatic

Hexomatic

Hexomatic is a platform that lets you extract data from any website without coding and then automate tasks (e.g., lead generation, research, content enrichment) via drag-and-drop workflows