Кирилл

Kotliarov Kyrylo [відкрити контакти](див. вище в блоці «контактна інформація»)
[відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація»)
Senior Front-End Developer

Front-End Engineer focused on architecture and DX: monorepos, shared contracts (JSON Schema/TypeBox), and
reusable UI-kits. 5+ years with React/TypeScript and RN/Expo. Lead squads, mentor engineers, and set
testing/performance baselines for fast, accessible, data-heavy apps and predictable releases.

Work Experience
ATMOSPHERIC SCHOOL Jul 2024 - Present
Senior Front-end Developer | Kyiv, Ukraine

Stack: React, JavaScript, TypeScript, HTML/CSS, Axios, React Query, React Hook Form, TypeBox, Tailwind
Built several web applications within a single learning platform ecosystem.
Delivered fully responsive UX for desktop/tablet/mobile with consistent patterns across apps.
Implemented complex form flows (RHF + TypeBox-based validators) and reliable data layer (React Query + Axios)
with caching and error handling.
Introduced platform theming with design tokens (CSS variables/Tailwind tokens): light/dark and multi-brand themes
via a ThemeProvider; SSR-safe toggling and accessible contrast.
Built and maintained a company UI-Kit adopted across the platform

PLATMA Feb 2024 - Jul 2024
Senior Front-end Developer | Delaware, USA

Stack: React, JavaScript, TypeScript, HTML/CSS, Axios, React Query, React Native (Expo)

Built a Track & Trace platform using a contract-first approach (JSON Schema), enabling true parallel FE/BE
development.
Set up a monorepo with shared types/interfaces and utilities for front-end and back-end to improve reuse and
consistency.
Implemented runtime page/form generation on the front-end from JSON schemas and back-end-provided
interfaces.
Shipped a cross-platform mobile app (iOS/Android) with React Native/Expo, sharing modules with the web
codebase.
Delivered scalable, maintainable solutions through typed contracts, modular architecture, and clear separation of
concerns.

OVERONIX Apr 2021 - Feb 2023
Front-end Developer | Kyiv, Ukraine

Stack: React, JavaScript, TypeScript, HTML/CSS, Axios, Redux, React Query
Designed scalable front-end architectures for multiple cryptocurrency web apps, enabling easier maintenance and
faster spin-up of new projects.
Built and maintained a company-wide UI-Kit / design system (versioned package) adopted across most projects,
improving consistency and delivery speed.
Implemented advanced reusable components, including virtualized tables and lists with sorting, filtering, pagination,
and empty/loading/error states.
Established code quality practices (code reviews, unit tests, CI checks) and performance baselines to keep bundles
lean and regressions low.
Standardized data-fetching and state patterns across apps to simplify feature development and reduce duplication.
ALTRECIPE Aug 2020 - Jan 2021
Front-end Developer | Kyiv, Ukraine

Stack: React, JavaScript, HTML/CSS, Axios, Redux

Built a production e-commerce storefront with React (component-driven architecture, routing, form handling).
Shipped responsive, accessible UI (mobile-first, keyboard/focus basics) for a seamless shopping experience.
Integrated payment gateways and checkout flow (authorization/capture, refunds, webhooks) with robust error
handling
Connected catalog & inventory APIs for real-time stock/pricing; implemented product search, filters, and sorting.
Improved performance via code-splitting/lazy loading and image optimization to keep pages fast during peak traffic.

CENTRUM KOMPETENCJI ECM Mar 2019 - Feb 2020
Full Stack Developer | Kyiv, Ukraine

Stack: .NET, C#, Entity Framework, Razor, SQL, T-SQL, HTML, CSS, JavaScript, jQuery;
Integrations: 1C, SAP
Led the delivery of multiple customized ECM systems end-to-end: discovery, architecture, implementation, rollout,
and support.
Coordinated and mentored the development team; ran planning/estimation, code reviews, and technical guidance.
Defined engineering standards (branching, code review, CI), improved delivery predictability and code quality.
Developed methodologies and training programs for company specialists and clients; built onboarding paths and
playbooks.
Trained and upskilled new specialists to meet internal needs; conducted workshops and knowledge-sharing
sessions.

LAN SERVICE Jun 2014 - Feb 2019
Full Stack Developer | Kyiv, Ukraine

Stack: .NET, ISBL, SQL, HTML, CSS, JavaScript, jQuery;
Integrations: 1C, SAP
Delivered multiple customized ECM systems for different clients, from discovery to production rollout.
Developed server- and client-side features (.NET, ISBL, SQL, HTML/CSS/JS/jQuery).
Built and maintained integrations with 1C and SAP for bidirectional data exchange and automated sync.

Core Skills
Main: JavaScript, TypeScript, HTML5, CSS3, Tailwind, React, Next.js, React Native, Expo, Axios, TanStack,
React Hook Form, Feature-Sliced Design, Modular approach, Eslint, Prettier, Husky, Git, clsx, date-fns, lodash, mobx,
echarts

Other: Mantine, Material UI, AntDesign, Redux, Redux Toolkit, Redux-thunk, Redux-saga, Formik, Yup, Ajv, Jest,
React testing library, NPM, PNPM, Yarn, Turborepo, Vite, Webpack, Rollup, Lerna, GitHub, GitLab, Bitbucket, Docker,
Jenkins, Storybook, Sentry, Strapi, i18next, lexical, livekit, react-dnd, Legendapp

Education
CLASSIC PRIVATE UNIVERSITY (ZAPORIZHIA, UKRAINE) Sep 2007 - Feb 2014

Master degree Systems Analysis and Applied Mathematics

Languages
Russian (Native), Ukrainian (Native), English (B1)