Valeriya is available for hire
Hire ValeriyaValeriya Zarutska
Verified Expert in Engineering
API Integration Developer
Alicante, Spain
Toptal member since November 4, 2015
Bio
Valeriya is a senior developer with experience building and evolving web platforms. She has delivered scalable features end-to-end, integrated complex third-party systems, and improved the performance, reliability, and maintainability of production software. Valeriya is comfortable taking ownership of projects from architecture through delivery.
Portfolio
Netcentric
React, Java, GitHub Copilot
Snigel
TypeScript, Vue 3, Pinia, Karma, Vitest, API Integration, OpenAPI, Swagger...
Gorilla
JavaScript, PHP, Redis, MySQL
Experience
- JavaScript - 12 years
- SCSS - 12 years
- API Integration - 10 years
- TypeScript - 6 years
- Vue 3 - 5 years
- Node.js - 5 years
- Full-stack - 5 years
- React - 3 years
Preferred Environment
Git, GitHub Copilot, Codex
The most amazing...
...things I've worked on were delivery recommendation system and real-time analytics dashboard.
Work Experience
Senior Developer
2025 - 2026
Netcentric
- Integrated a 3rd‑party Unreal image provider service to deliver high‑fidelity visualization.
- Delivered accessibility features in line with WCAG standards, including semantic structure, keyboard navigation, and screen reader support.
- Developed interactive product launch experiences for a global automotive brand, building custom GSAP-powered animations and multimedia components for video-rich, high-traffic marketing campaigns.
Technologies: React, Java, GitHub Copilot
Senior Software Engineer
2023 - 2025
Snigel
- Owned the development of analytics dashboards, delivering interactive reporting interfaces capable of visualizing and filtering over a year of historical business data.
- Applied TDD practices to deliver highly testable software, maintaining 98% test coverage across the application.
- Refactored performance-critical data flows and aggregation logic, expanding dashboard reporting capabilities from 3 months to 1 year of historical data.
Technologies: TypeScript, Vue 3, Pinia, Karma, Vitest, API Integration, OpenAPI, Swagger, PhalconPHP, Sentry, PHP, Python, Grafana
Senior Front-end Developer
2021 - 2023
Gorilla
- Led the development of a custom one‑page checkout, handling both front‑end and back‑end tasks to replace the default checkout.
- Developed a custom search functionality with server‑side validation and dynamic availability checks.
- Implemented a preference system that prioritized frequently used delivery addresses to streamline checkout.
Technologies: JavaScript, PHP, Redis, MySQL
Senior Front-end Engineer
2020 - 2021
Clean Origin
- Implemented virtual appointment scheduling for a high‑end jewellery retailer.
- Integrated pay‑by‑installments APIs (ID.me, Affirm, AfterPay).
- Built reusable storefront features, including banners, sliders, custom forms, and content blocks, alongside performance improvements for media-rich pages.
Technologies: JavaScript, PHP, Ajax, REST APIs
Front-end Developer
2019 - 2020
space48
- Implemented dynamic delivery options and optimized checkout logic through custom validations and data processing.
- Integrated search, store finder, and POS pages using 3rd‑party APIs (Trustpilot, Google Maps, Bazaarvoice).
- Developed product listing, comparison, and display logic, including warranty, promotions, refurbished, and discount pricing.
Technologies: JavaScript, PHP, PayPal API, Ajax, REST APIs
Front-end Developer
2018 - 2019
Swarming Technology
- Implemented new features and fixes across multiple Magento e-commerce projects.
- Handled version upgrades and integration of third‑party modules and libraries.
- Built UI features such as calculators, sliders, modals, and galleries, and custom search features.
Technologies: JavaScript, Knockout (Knockout.js), PHP, Magento 2, Magento 1, WordPress
Front-end Developer (via Toptal)
2016 - 2017
ARS Type
- Built responsive layouts for a Ruby on Rails application.
- Developed a rich Internet application for font testing in AngularJS.
- Developed license upgrade functionality allowing customers to expand existing font licenses from individual to broader usage tiers based on seats, devices, and website requirements.
- Implemented end-to-end invoice generation workflows, integrating order processing, tax calculations, and customer billing data.
- Built various UI components: custom slider, gallery, infinite scroll, and social sharing.
Technologies: JavaScript, AngularJS, Sass, HTML5, Ruby on Rails (RoR), Front-end, API Integration, PostgreSQL
Senior Front-end Engineer (via Toptal)
2016 - 2016
Savoteur
- Refactored and revised Ruby on Rails application layouts.
- Integrated 3rd-party APIs for various purposes, including social sharing, URL shortening, and Google Maps.
- Implemented URL encoding for query string parameters.
Technologies: Ruby on Rails (RoR), SCSS, JavaScript, jQuery, Google Maps API
UI Developer (via Toptal)
2015 - 2016
Silent Auction Pro
- Completed a full UI makeover for existing pages of a charity website, including layout design and integration.
- Added video upload with in‑page previews and improved media management functionality.
- Developed and integrated a one-page image editor, allowing users to upload, edit, and preview images before saving.
Technologies: PHP, CSS3, Ajax, JavaScript, MySQL
Front-end Developer
2014 - 2015
Innovecs (ClickMeIn project)
- Developed the UI for a Chromium-based client.
- Built the front-end for the application's web portion.
- Created a responsive theme for the application, as well as a number of plugins for WordPress blogs.
- Developed landing pages and HTML-email templates.
- Integrated third-party services, including statistic counters, social sharing (Facebook, Twitter, etc.) buttons, and payment gateways.
Technologies: PHP, AngularJS, JavaScript, CSS3, HTML5
Experience
Hyundai Car Configurator
https://www.hyundai.com/es/es/modelos/tucson-hibrido/configuracion.htmlAn application that allows potential car buyers to select and preview their preferred car model, color, and accessories. UI is React, FastAPI, and AEM integration. It has Unreal image integration, fetching car model images, and live renders from a 3rd-party provider. The app is available for all markets.
Bettys Checkout and Delivery Recommendation System
https://www.bettys.co.uk/Rebuilt the existing checkout to enhance and simplify the purchase process. Implemented a delivery recommendation system based on product shelf-life and customer location. The client reported a 48% reduction in abandoned cart occasions.
Education
2011 - 2015
Bachelor's Degree in Computer Science
NTUU “Kyiv Polytechnic Institute” - Kyiv, Ukraine
Skills
Libraries/APIs
Vue 3, React, Node.js, REST APIs, OpenAPI, jQuery, Google Maps API, PayPal API
Tools
Git, GitHub Copilot, Codex, Karma, Vitest, Sentry, Grafana, Adobe Experience Manager (AEM)
Languages
SCSS, HTML5, CSS3, Sass, JavaScript, TypeScript, PHP, Python, GraphQL, Java
Frameworks
Tailwind CSS, Ruby on Rails (RoR), AngularJS, Next.js, Laravel, Swagger, PhalconPHP, Knockout (Knockout.js)
Paradigms
REST, Automated Testing, Object-oriented Programming (OOP)
Storage
PostgreSQL, Redis, MySQL
Platforms
Amazon Web Services (AWS), Magento 2, Magento 1, WordPress
Other
Front-end, API Integration, APIs, Vite, Large Language Models (LLMs), Full-stack, FastAPI, Computer Science, Neural Networks, Algorithms, Data Structures, Networks, Pinia, Ajax
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