Viktoria Voloshchuk Senior Frontend Developer | React | TypeScript |

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Senior Frontend Engineer (Project-based)

Independent Contractor

Jun 2025 - Current (1 year)

As a Senior Frontend Engineer, I was responsible for designing and implementing dynamic user interfaces, ensuring optimal performance and responsiveness across various devices. I utilized WebSocket technology to enhance real-time communication features within applications, significantly improving user engagement. Additionally, I leveraged large language model (LLM) capabilities to streamline the coding process, employing AI agents to generate code and automate testing, which accelerated project timelines and improved overall code quality.

Senior Frontend Developer

airSlate

Sep 2023 - Nov 2024 (1 year 3 months)

As a Senior Frontend Developer at PdfFiller, I played a pivotal role in enhancing the mobile web experience of our comprehensive online platform, which enables users to edit, e-sign, manage, and share PDF documents seamlessly. Key achievements included: - Taking ownership of a critical codebase refactor for the 'My Docs' feature during its development, defining a clear roadmap to ensure on-time delivery, and establishing a scalable and extensible foundation for future enhancements. - Investigating an 8-second Largest Contentful Paint (LCP) from field data, diagnosing the root cause as eager-loading micro-frontends. I developed a comprehensive roadmap for dynamic micro-frontend loading and provided key technical guidance on a proof-of-con

Senior Software Engineer

SoftServe

Feb 2020 - Jun 2023 (3 years 5 months)

As a developer for toom.de, a major German e-commerce platform, my work was concentrated on the most critical, high-traffic part of the user journey: the basket and checkout process. My key achievements in this area included: - Led a major technical update by migrating the basket and checkout from an old, single system to modern micro-frontends (reducing code complexity by 36%) and developed the new single-page checkout feature. - Handled all key third-party integrations for the shop, including payment systems (Klarna, Computop) and tracking tools (Google Analytics, FactFinder, Emarsys). - Improved the deployment process by configuring CI/CD pipelines in GitLab and automating JS bundle version updates on production. - Sped up the local dev

Software Engineer

EPAM Systems

Oct 2018 - Feb 2020 (1 year 5 months)

My role as a Software Engineer was focused on a long-term project for Regeneron, a leading biotechnology company. I was responsible for helping their team build and optimize a complex administrative platform used for managing animal research data. My main achievements included: - Incorporated Formik library to facilitate the development process. - Refactored unit tests by introducing utility functions to create mock data, which lessened duplication and enhanced code maintainability. - Optimized extensive list performance by applying virtualization, memoization, and pure components. - Utilized D3.js to create dynamic charts within the admin panel

Javascript Developer

Forma Pro

Aug 2017 - Sep 2018 (1 year 2 months)

Responsibilities: - Developed a customer-facing shipping platform using Angular (NgRx), integrated Google Maps API, and refactored large components for better maintainability. - Developed a professional networking platform using Express/MongoDB for the backend, managing GraphQL APIs, and migrating the frontend from Redux to Apollo Client.

Viktoria Voloshchuk

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