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Vlad Kost

Senior Software Engineer

Denver, CO · vlad@vlad-kost.com · 646-706-3785

LinkedIn · GitHub · https://vlad-kost.com

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Summary

I'm a Senior Software Engineer with 10+ years of experience building backend services, APIs, and distributed systems in C#/.NET and Java. I spent 4 years at Google shipping production systems at scale — from integration test infrastructure across all Workspace products to performance tooling for Google Assistant.

Technical Skills

Languages & Frameworks:
C#, .NET 8, .NET Core, WCF, ASP.NET, Java, Spring, Hibernate, TypeScript, Python
Backend Systems:
RESTful APIs, API-first architecture, Microservices, SOA, Distributed systems, tRPC
Databases:
SQL Server, PostgreSQL (Neon), Spanner, Drizzle ORM, Data modeling
Cloud & DevOps:
Azure, AWS, Vercel, CI/CD
AI-Native Development:
Claude Code (daily use), AI-assisted development, Prompt engineering
Frontend:
React, Next.js 15, Tailwind CSS, HTML/CSS

Experience

Research Software Engineer

Google

2021 – 2025

Shipped production systems across Google Workspace and Google Assistant. Built integration test infrastructure that reduced memory by 4%, disk space by 6%, and build time by 4.8% across all Workspace integration tests. Designed and launched developer tooling for bug management and performance regression detection.

  • Designed & launched Tin Test Crawler — reduced build time by 4.8% across Workspace
  • Built Hall Monitor Tool for bug management and automation
  • Performance regression detection for Google Assistant on Pixel Tablet
  • Google Readability: C++, Java, PLX

Senior Software Engineer / Team Lead

Fareportal

2019 – 2020

Led a team of 8 engineers. Redesigned project architecture from monolithic to SOA, refactoring 90% of the codebase. Migrated WCF services to .NET Core REST APIs on Azure.

  • Led team of 6 developers + 2 test engineers
  • Monolith to SOA migration — 90% codebase refactored
  • WCF to .NET Core REST API migration on Azure Pipeline
  • 100% API test coverage via Postman monitors

Software Engineer

Endeavor Streaming

2016 – 2019

Built backend services and native applications for NBA, UFC, and NFL streaming platforms. Contributed to React-based web applications.

  • Backend services for NBA, UFC, NFL streaming (C#/.NET Core)
  • React web applications for NBA and NFL platforms
  • Full development lifecycle through Microsoft Store submission

Earlier Experience

2015 – 2016

Limosys (2015–2016) and Redwerk (2015) — Java server-side (Spring, Hibernate), SQL, Python/Django, Android development

Certifications

  • Oracle Certified Professional, Java SE 8 Programmer
  • Programming in C# — Microsoft

Education

Master's in Computer Science

Kharkiv National University of Radio Electronics

Information Security in Computer Systems and Networks

2002 – 2007