EK

Eugene Kolesnik

Available to hire

I’m Eugene Kolesnik, a senior full-stack engineer with 13+ years building production software for enterprise platforms and high-scale products.

About

I’m Eugene Kolesnik, a senior full-stack engineer with 13+ years building production software for enterprise platforms and high-scale products. I’ve shipped React and Python applications across domains like financial technology, healthcare, and gaming, with deep experience in AWS/Azure, microservices, CI/CD, and modern API-driven development.

In recent work, I’ve transitioned into AI-augmented engineering—building and shipping multiple production applications using AI agent orchestration, LLM integrations, and automated QA. I enjoy turning complex requirements into reliable systems, improving developer workflows, and delivering outcomes from architecture through deployment and iteration.

  • 11 years' experience
  • Joined November 2026

Languages

  • JavaneseAdvanced

Industry experience

  • Financial Services
  • Healthcare
  • Gaming
  • Software & Internet
  • Professional Services
  • Media & Entertainment

More experts in Atlanta, United States

Work experience· 7 roles

Independent Contractor · Kolesnik IncJan 2024 – Jan 2025 · 1 yr 1 mo

Delivered e-commerce projects on Shopify Hydrogen; built AI-powered SEO optimization, content generation, and social media pipelines using Make.com and custom tooling; implemented conversational AI chatbots and experimental assistants using Discord and ChatGPT/xAI APIs.

Lead Developer · LoanStreetJul 2022 – Oct 2023 · 1 yr 4 mos

Led implementation of bulk file upload pipeline to AWS S3 with progress tracking and fault tolerance; migrated shared types/interfaces across repositories to reduce build times and improve developer experience; built staging environments mirroring production for stakeholder pre-release review.

Senior Software Developer · ClearSpendDec 2021 – Jul 2022 · 8 mos

Built end-to-end onboarding flow with KYC/KYB collection for multiple business entity types; integrated Stripe and Plaid across the full stack for payment processing and bank linking; developed an accounting module with export/filtering, mobile notifications, and receipt management.

Senior Software Developer · Intercontinental Exchange (ICE) – BakktAug 2020 – Nov 2021 · 1 yr 4 mos
Lead Developer / Co-Founder · Sonar SoftwareJan 2019 – Apr 2020 · 1 yr 4 mos
Lead Software Developer · Kindly CareMar 2018 – Nov 2019 · 1 yr 9 mos
Staff Software Developer · athenaHealthMar 2012 – Dec 2017 · 5 yrs 10 mos

Education

Bachelor of Business Administration, Finance · Georgia State University2010

Certifications and awards

CFA Level I passed2010 – 2026
CFA Level I2010 – 2026

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