Open to opportunities

Nazarii Semeniuk

@nazariisemeniuk

Message

Senior Frontend Developer at BillTech, where I led a sub-product frontend and built a reusable payment form module.

Ukraine

Message

At BillTech, I led the creation of a sub-product frontend, including a UIKit built from scratch. I also built a shared payment form module that another team now reuses, and improved the production pipeline to reduce post-release issues.

At Atlasiko Inc, I built an SSR framework based on Native Web Components and Node.js, along with a CLI for creating websites on it. I also improved Node.js server performance using Workers and helped make the main system more modular.

I built and shipped Sayve solo, a voice expense tracker live on the App Store, using Vue 3 and Capacitor with native speech recognition and subscriptions. I also have full ownership of Gameverse, a Ukrainian gaming media site, covering its frontend, content architecture, SEO, infrastructure, and data model.

Experience

Work history, roles, and key accomplishments

Current

Senior Frontend Developer

Current

BillTech

Oct 2023 - Present (3 years)

Developed new features and improved existing functionality, owning the frontend of a sub-product including architecture decisions and code reviews. Led creation of a new sub-product frontend with a UIKit built from scratch, built a shared payment form module, improved production pipeline, and built a Telegram Mini App.

Vue.Js Nuxt TypeScript JavaScript HTML CSS SASS Webpack Vite NodeJS ExpressJS MongoDB Jest Docker Nginx CI CD Git

FullStack Developer

Atlasiko Inc

Jun 2021 - Oct 2023 (2 years 4 months)

Maintained internal systems and public websites, developed a custom SSR framework based on Node.js and Web Components, and provided infrastructure support including CI/CD pipelines and developer CLIs. Achieved increased server performance using Workers and made the main system more modular.

Nuxt.Js NodeJS Web Components CI CD NPM Docker Testing AngularJS ExpressJS Vue.Js

FullStack Web Developer

Freelance

Jun 2019 - Jul 2021 (2 years 1 month)

Converted designs into responsive HTML/CSS, developed custom WordPress themes and Laravel websites, and built a large Vue-based eCommerce platform with a custom CRM. Ranked in the top 10% of freelancers on the platform.