Looking for a job

Oleksii Khivrenko

@oleksiikhivrenko

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I build high-performance React and TypeScript products with complex business logic and scalable frontend architecture.

Poland

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What I'm looking for

I'm looking for frontend work where I can build or modernize complex products, shape architecture, improve performance and testing, and collaborate with strong teams in remote, hybrid, or on-site EU environments.

I've built React and TypeScript products for SoftServe clients across UK grocery retail, construction SaaS, pharmacy management, and real estate. On a greenfield supply-chain planning platform, I shaped frontend architecture, delivered 20+ configurable data tables, KPI dashboards, and financial-period logic, while pushing page-load performance above a 90 Lighthouse score.

Before that at Codeit, I built real-time trading interfaces for hedge funds and asset managers, plus exposure-management tools for (re)insurers. My work included live market-data dashboards, complex financial data models, maps, charts, large-data tables, and rendering optimizations for streaming updates.

I enjoy building from scratch, modernizing legacy systems, and solving complex frontend business logic. I care about clean architecture, testing, performance, and helping teammates through code reviews and mentoring.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

SoftServe

Aug 2021 - Present (5 years 1 month)

Senior frontend engineer on long-term client projects across retail, construction SaaS, pharma, and real estate. Take part in architecture decisions, mentor teammates, and handle work from requirements all the way to production.