I am a Senior Frontend Engineer with 7 years of experience building production-grade web applications, including fintech platforms, data-heavy dashboards, and e-commerce systems. I specialize in React and TypeScript, and I have hands-on experience delivering end-to-end features using Node.js, APIs, and Playwright-based test automation. I’ve led frontend architecture decisions across multiple production platforms, built robust rendering systems, and designed integrations with complex external APIs. I’ve also developed cross-platform mobile apps with shared architecture, focusing on performance, reliability, and polished user experiences.

Michael Raginsky

I am a Senior Frontend Engineer with 7 years of experience building production-grade web applications, including fintech platforms, data-heavy dashboards, and e-commerce systems. I specialize in React and TypeScript, and I have hands-on experience delivering end-to-end features using Node.js, APIs, and Playwright-based test automation. I’ve led frontend architecture decisions across multiple production platforms, built robust rendering systems, and designed integrations with complex external APIs. I’ve also developed cross-platform mobile apps with shared architecture, focusing on performance, reliability, and polished user experiences.

Available to hire

I am a Senior Frontend Engineer with 7 years of experience building production-grade web applications, including fintech platforms, data-heavy dashboards, and e-commerce systems. I specialize in React and TypeScript, and I have hands-on experience delivering end-to-end features using Node.js, APIs, and Playwright-based test automation.

I’ve led frontend architecture decisions across multiple production platforms, built robust rendering systems, and designed integrations with complex external APIs. I’ve also developed cross-platform mobile apps with shared architecture, focusing on performance, reliability, and polished user experiences.

See more

Experience Level

Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate

Language

English
Fluent
Hebrew (modern)
Fluent
Ukrainian
Fluent
Russian
Fluent

Work Experience

Senior Front End Engineer at Jewish Heritage Network
August 1, 2025 - Present
Led frontend architecture and technical decisions across multiple production platforms. Built custom rendering systems (virtualized canvas, infinite layouts). Designed robust integrations with complex external APIs (data normalization, caching, retry strategies, resilience). Built data-heavy React/TypeScript interfaces with complex rendering and performance constraints. Led cross-platform mobile app development for iOS/Android with shared architecture and parity with web.
Front End Engineer at ProfitIT
December 1, 2019 - July 1, 2022
Implemented fintech web applications and CRM-integrated client platforms from prototype to production. Built end-to-end frontend using React, Node.js/NestJS, and PostgreSQL. Developed a crypto payment gateway with custom REST APIs, blockchain synchronization, webhooks, and transaction processing. Led frontend architecture and deployment for core wallet, CRM, and transaction systems.
Frontend Web Developer at Tech | Digital Powerhouse
November 1, 2018 - November 1, 2019
Created responsive websites and landing pages using HTML/CSS/JS and evolved into dynamic apps with Vue.js, Laravel, and WordPress. Collaborated closely with designers and PMs, translating UI specs into responsive, production-ready interfaces using Git, Jira, and Zeplin.
Senior Frontend Engineer at Jewish Heritage Network
August 20, 2025 - Present
Led frontend architecture decisions across multiple production platforms. Built custom rendering systems (virtualized canvases, infinite layouts) and designed robust integrations with complex external APIs including data normalization, caching, retry strategies, and resilience. Implemented data-heavy React/TypeScript interfaces with performance constraints. Delivered end-to-end features using Node.js, REST APIs, and Playwright-based test automation. Contributed to cross-platform mobile apps with a shared architecture and parity with web. Key technologies included React, TypeScript, Zustand, REST APIs, Data Visualization, and Virtualization.
Full Stack Engineer
July 20, 2022 - August 20, 2025
Self-custodial crypto infrastructure platform for payments, wallets, and digital asset operations (React UI, Node.js/NestJS APIs, PostgreSQL). Developed a crypto payment gateway with custom REST APIs, blockchain synchronization, webhook handling, and transaction processing. Designed wallet infrastructure with dynamic fee logic and multi-asset withdrawal flows. Led Playwright-based end-to-end and API automation for core wallet, CRM, and transaction systems.
Frontend Engineer at Profit IT
December 20, 2019 - July 20, 2022
Built fintech web applications and CRM-integrated client platforms from prototype to production. Implemented end-to-end development environments from bare server to production (Docker, PHP/Composer, deployment scripts, client-specific configs). Built and maintained E2E and API tests using Playwright and Jest for CRM, trading, and payment systems.

Education

Full Stack Development at HackerU
January 1, 2018 - April 10, 2026
Full Stack Development at HackerU
January 1, 2018 - April 10, 2026
Bachelor of Arts in Graphic Design at Lviv National Academy of Arts
January 1, 2009 - December 31, 2013

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services, Media & Entertainment, Financial Services, Other

Experience Level

Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate

Hire a Front-End Developer

We have the best front-end developer experts on Twine. Hire a front-end developer today.