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Dmytro Herasymenko

@dmytroherasymenko

Senior Frontend Engineer at Trinetix building AI streaming interfaces and migrating enterprise applications to modern architectures.

Poland

Message

What I'm looking for

I'm open to relocation and remote work.

At Trinetix, I built a reusable AI chat widget for MDM Copilot as an Angular Web Component, so it could be integrated across enterprise applications. I implemented streaming responses with Server-Sent Events and later GraphQL subscriptions over WebSockets.

On Omnia, I designed a fault-tolerant export workflow for a React microfrontend, moving status tracking from polling to Azure Web PubSub events. I also synchronized state across microfrontends to support job recovery and prevent duplicate requests.

For the Nike Learning Platform, I migrated business-critical features from a legacy Vue and Quasar application to Nuxt while preserving enrollment and learning workflows. Across these projects, I’ve worked on frontend architecture, real-time applications, and large-scale migrations.

Experience

Work history, roles, and key accomplishments

Current

Senior/Lead Front-End Engineer

Current

Trinetix

Nov 2021 - Present (5 years)

Led frontend engineering for enterprise projects including an investment management platform, an AI assistant, and a learning platform migration. Designed and implemented scalable frontend architectures and real-time features.

React TypeScript Module Federation Azure Web PubSub Angular Signals GraphQL SSE WebSockets Angular Elements Vue.Js Nuxt Quasar Framework Vuex REST APIs RxJS NgRX Ogma

Senior Front-End Developer

Zoolatech

Mar 2021 - Oct 2021 (7 months)

Introduced Vue.js using a microfrontend architecture and rewrote core modules from a legacy application. Collaborated on frontend architecture and code reviews.

Vue.Js TypeScript Vuex Microfrontends

Senior Front-End Developer

Fiver London LTD

Jun 2020 - Mar 2021 (9 months)

Developed a production-ready e-commerce storefront from scratch using React (Falcon) and later migrated it to Angular Spartacus. Implemented GraphQL-driven features and responsive mobile-first interfaces.

React Falcon Angular Spartacus TypeScript GraphQL Redux CSS in JS HTML5 SCSS

Front-End Engineer

Trinetix

Nov 2016 - May 2020 (3 years 6 months)

Worked on multiple enterprise web applications for Fortune 500 clients using Angular, React, and TypeScript. Designed reusable UI components and participated in frontend architecture discussions.

Angular React TypeScript UI Components Agile

Front-End Developer

White Rhino

Jan 2015 - Nov 2016 (1 year 10 months)

Developed client-facing web applications using JavaScript, AngularJS, HTML5, and SCSS. Implemented responsive user interfaces and reusable frontend components.

JavaScript AngularJS HTML5 SCSS Responsive Design

Front-End Developer/HTML Coder

NodeArt

May 2013 - Jan 2015 (1 year 8 months)

Built responsive websites and web applications using HTML5, CSS, JavaScript, jQuery, and AngularJS. Worked closely with designers to convert UI mockups into production-ready interfaces.

HTML5 CSS JavaScript jQuery AngularJS