Kyrylo

Kirill Kotliarov
Lead / Senior Front-End Engineer
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Professional Summary
Front-End Engineer with 5+ years of experience in building scalable web applications with React, TypeScript,
and modern front-end architecture.
Strong background in design systems, complex data-driven interfaces, reusable UI platforms, and developer
experience improvements. Also experienced with React Native / Expo, backend integration patterns, and
AI-assisted engineering workflows.
Actively using and integrating AI into day-to-day development processes to improve delivery speed, code
quality, prototyping, and engineering efficiency. Proven ability to build maintainable solutions, improve
engineering consistency, and contribute across product, architecture, and delivery workflows.

Core Skills
Front-End: HTML5, CSS3, Tailwind CSS, JavaScript, TypeScript, React, Next.js
Data Fetching and Forms: Axios, TanStack Query (React Query), React Hook Form
Mobile: React Native, Expo
Architecture and Engineering: Monorepos, Design Systems, UI Kits, SSR, Shared Contracts
AI in Engineering Workflow: AI-assisted development workflows, prototyping, code generation support,
engineering automation, developer productivity enhancement
Quality and Delivery: Code Reviews, Performance Optimization, Accessibility, Testing, CI/CD, Developer
Experience

Professional Experience
DEUX VINGT — Senior Front-End Engineer
Seattle, USA | Nov 2025 – Present
Tech: Lenis, Framer Motion, GSAP, Three.js, SPARK.js, Strapi, Cloudflare
● Delivered a multi-page company website with CMS integration, responsive behavior, and custom
animations across key user-facing sections.
● Took ownership of infrastructure and deployment setup, helping establish a scalable, production-ready
web platform.
● Improved technical SEO and cross-device adaptation to support discoverability and a consistent
experience across screen sizes.
● Contributed to a prototype for guided spatial experiences built on top of scanned 3D environments.
● Established an AI-assisted workflow for small internal projects, enabling faster delivery while keeping
generated code aligned with project standards.

Atmospheric School — Senior Front-End Engineer
Kyiv, Ukraine | Jul 2024 – Oct 2025
Tech: Lexical, Livekit, DnD-kit, MobX, ECharts, React Big Calendar, Strapi
● Contributed to a large-scale educational platform with dedicated applications for students, teachers,
mentors, and administrators.
● Worked in a shared monorepo spanning front-end, back-end, and UI kit layers, supporting a scalable
and consistent product ecosystem.
● Applied a contract-driven approach with shared TypeBox schemas to keep front-end and back-end
contracts aligned across the platform.
● Optimized complex form flows and improved front-end integration with backend services through
clearer request and data-fetching patterns.
● Implemented adaptive UI, theming, localization, and real-time video lesson and conferencing features.

Platma — Senior Front-End Engineer
Delaware, USA | Feb 2024 – Jul 2024
Tech: Turborepo, Vite, Legendapp, Ajv, i18next, TanStack Virtual, Mantine, D3.js
● Contributed to a national-scale excise goods track-and-trace platform supporting product traceability
across the supply chain.
● Helped implement a contract-first architecture with shared TypeBox schemas, aligning front-end and
back-end contracts and reducing duplication across the system.
● Built schema-driven front-end functionality, with a significant part of the UI generated from shared
JSON-based schemas.
● Developed a mobile application that allowed users to scan marked products and verify their
authenticity.

Overonix — Front-End Engineer
Kyiv, Ukraine | Apr 2021 – Feb 2023
Tech: Material UI, Lerna, Rollup, Storybook, Jest, React testing library, Sentry
● Developed several crypto-related web applications, including customer-facing products and internal
back-office systems.
● Built and maintained a shared UI kit used across multiple company projects, improving consistency
and accelerating delivery.
● Established reusable front-end patterns across applications to support more scalable and
maintainable product development.

Altrecipe — Front-End Engineer
Kyiv, Ukraine | Aug 2020 – Jan 2021
Tech: Redux Toolkit, Redux-thunk, Formik, Yup, AntDesign, Lodash
● Developed a React-based e-commerce SPA for the US market.
● Implemented core storefront flows, including catalog browsing, cart, and checkout interactions.
● Integrated payment systems and supported transaction flows through front-end and API
communication.
● Contributed to a responsive, production-ready user experience in a client-facing product.

Centrum Kompetencji ECM — Team Lead / Full Stack Engineer
Kyiv, Ukraine | Jun 2014 – Feb 2020
Tech: .NET, C#, SQL, Razor, jQuery
● Delivered customized enterprise content management and workflow automation systems for large
organizations with complex business processes.
● Contributed across backend, databases, integrations, and web interfaces, supporting end-to-end
delivery of enterprise solutions.
● Progressed into a team leadership role, leading a small team, mentoring junior specialists,
participating in interviews, and coordinating delivery across projects.
● Designed internal methodologies, onboarding programs, and client training materials to improve
knowledge transfer, system adoption, and delivery consistency.

Education
Classic Private University, Zaporizhzhia, Ukraine
Master’s Degree in Systems Analysis and Applied Mathematics | 2010 – 2014
Bachelor’s Degree in Systems Analysis and Applied Mathematics | 2007 – 2010

Languages
Ukrainian — Native, Russian — Native, English — B1+