Олексій

OLEKSII Full Stack Software Developer

SHAKHIN ​ [відкрити контакти](див. вище в блоці «контактна інформація») ​ LinkedIn ​ Github ​ Khmelnytskyi, Ukraine

SUMMARY EXPERIENCE
Senior JavaScript Engineer with 10+ Frontend Engineer 2024 - 2026
years of experience building complex,
high-performance web applications LIQUiDITY Group
across fintech, healthcare, and 3D • Built complex dashboards and visualization systems for large-scale financial datasets
systems. Specialized in data-heavy using React and Highcharts.
applications, real-time systems, and • Enhanced rendering performance of data-heavy dashboards (handling 500k–1M+
advanced visualization (including data rows), reducing UI response time by ~30–40%.
3D/geometry tooling with Three.js). • Integrated AI-generated insights into UI workflows, ensuring accurate and usable data
presentation.
Strong product mindset with full • Contributed to scalable frontend architecture and reusable component systems.
ownership of features from architecture https://www.liquidity.com
to production. Recently focused on AI-
integrated workflows, including LLM- Fullstack Engineer 2023 - 2024
powered systems and diffusion-based
image pipelines. Jama Ltd
• Developed end-to-end features across frontend and backend (React + Node.js +
Looking to contribute to technically MongoDB), improving scalability and reducing API bottlenecks under load.
challenging products where • Delivered a cross-platform mobile app from scratch and reduced API response latency
performance, scalability, and rich user by ~25% through backend and data flow optimizations.
interaction are critical. • Built a cross-platform mobile app (React Native) from scratch, including architecture,
API integration, and deployment.
• Designed REST APIs and improved backend performance and data flow.
EDUCATION • Integrated Google Cloud services for storage and scalability.
Master's degree Frontend Engineer 2022 - 2023
Khmelnitsky National University Deutsche Bahn
09/2014 - 12/2019 • Developed UI for an internal cloud-based system detecting train equipment failures.
Khmelnytskyi, Ukraine • Implemented real-time monitoring interfaces processing live equipment data streams,
reducing update latency and improving issue detection responsiveness by almost a
half.
SKILLS • Built real-time interfaces using WebSockets for monitoring and management.
• Delivered admin tools for infrastructure and equipment tracking.
Core Technologies
JavaScript TypeScript React Angular
Frontend Engineer 2021 - 2022

React Native Node.js Redis MongoDB
Team International
• Developed complex UI systems for business process management platforms.
MySQL Express Meteor NestJs • Improved stability and performance of complex legacy UI workflows, reducing
frontend-related bugs in production and improving load times for key views.
NextJs WebSockets REST APIs • Built adaptive, data-driven components and improved system reliability.
Angular Firebase Three.js Expo • Diagnosed and resolved performance and UI issues across the application.

HTML CSS SQL NoSQL gRCP AWS Fullstack Engineer 2021 - 2021

Google Cloud Services Java C# Amwell
• Contributed to telehealth ecosystem including video communication and scheduling
Python Webpack Vitest Jest Docker systems.
Kubernets • Improved database performance by introducing read replicas and load balancing,
reducing query latency and improving system scalability under load.
• Developed real-time communication features (RTC), improving call reliability and
reducing connection/setup issues in production environments.
LANGUAGES • Built and maintained parts of mobile and web applications.
English Proficient https://business.amwell.com

Ukrainian Native Fullstack Engineer 2018 - 2021

Russian Native Desktop Metal
• Built web-based 3D tools using Three.js for model visualization and analysis.
• Implemented geometry analysis tools (wall thickness, measurements, cross-sections).
• Automated cost estimation and workflow systems for 3D printing processes, reducing
manual processing time for orders.
• Developed systems for comparing model versions and highlighting structural issues.
• Designed systems for cost estimation and production workflows.
• Developed data models and communication systems between users and
organizations.
https://www.desktopmetal.com/products/livestudio