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Alexandr Sokolov

Senior Frontend Engineer

Remote · WorldwideEnglish · Русскийspeedo210@gmail.comalexsokol.devgithub.com/assassin0210t.me/sokol_dev

Summary

Senior Frontend Engineer with 7+ years building React, TypeScript, and Next.js applications in production. Strong on performance, design systems, and accessibility. Frontend Lead experience on a US-based SaaS. Open to Senior or Lead remote roles.

Experience

LayersSenior Frontend Engineer · Early-stage work-management platform
2024 — present
  • Contributing across packages — Projects (tasks, sprints, kanban), Pages (rich pages with databases), Flow (visual automations), and Meet (in-app video on LiveKit).
  • Shipped feature work: sprint move across projects/folders, task attachments, project-creation wizard, modal flows, kanban interactions.
  • UX polish across the app — assignee dropdowns, color pickers, badges, share panel; mobile adaptivity for the task detail view.
  • i18n coverage in settings and shared components (Mantine 8, i18next). Stack: React 18 + Vite + Zustand + Redux Toolkit + TanStack Query in a monorepo.
School Bus ManagerSenior Frontend Engineer · Bus-operations SaaS for US school districts
2023 — 2024
  • Led a major frontend refactor — owned architecture decisions, code-review process, and shared patterns across the team.
  • Optimized critical-path screens — up to 7× faster in production through targeted refactors and bundle work.
  • Migrated Webpack → Vite (dev rebuild from ~12s to <1s) and Redux → RTK Query under FSD architecture.
  • Introduced TypeScript across the codebase — safer refactors, earlier error detection.
  • Rolled out Zustand for local state and centralized modal management; set up linting, formatting, and CI automation.
ZoftifySenior Frontend Engineer · Product studio (US clients)
2021 — 2023
  • Tourseta — multi-tenant SaaS for tour operators. Built booking flow and per-operator admin on a Next.js monorepo (Radix UI, Tailwind, TanStack Query).
  • Integrated Stripe + Airwallex payments, NextAuth authentication with role-based access, FeatureHub flags, and next-intl i18n across Tourseta booking and admin surfaces.
  • Optimized Tourseta performance and bundle size — measurable load-time and UX gains on slow networks.
  • Readyhubb — service marketplace. Built admin panels and dashboards with Next.js, Stripe, Chart.js, and Tailwind. Designed flexible interfaces for non-technical content management.
AeroideaFrontend Engineer · Digital product studio
2020 — 2021
  • Joined pre-MVP and shipped to production. Built shared design-system and helper packages reused across multiple projects.
  • Built a content-block builder in the admin panel — sliders, carousels, event grids — letting marketing assemble pages without engineering involvement.
  • Tuned page caching and server/client workload split, improving Next.js load times.
  • Implemented WCAG accessibility — high-contrast themes, font-size and letter-spacing controls. Mentored junior developers and reviewed code.
Helium 10Frontend Developer · US SaaS for Amazon sellers
2018 — 2020
  • Built Adtomic — Amazon advertising automation: keyword campaigns, price and competitor monitoring.
  • Contributed to the internal UI library — components, Storybook documentation, and tests.
  • Engineered dashboards and tooling that let Amazon sellers manage campaigns at scale.

Skills

Frameworks
React (incl. 19), Next.js, TypeScript
State / Data
TanStack Query, Redux Toolkit / RTK Query, Zustand, Jotai
UI / Styling
Tailwind CSS, Mantine, Radix UI, Styled Components
Testing
Playwright, Cypress, Jest, React Testing Library
Build & Tooling
Vite, Webpack, Turbopack, Storybook, ESLint, Prettier
Architecture
FSD, Monorepo, Design Systems, Core Web Vitals, WCAG
Integrations
Stripe / Airwallex, NextAuth, FeatureHub, i18n (next-intl), Socket.IO, Lexical

Selected Projects

  • Work-management platform — pages with databases, projects (tasks/sprints), forms, visual automations (Flow), video meetings on LiveKit (Meet), CRM. Web + desktop (JAR) builds.
  • Multi-tenant SaaS for tour operators — booking flow and per-operator admin. Next.js monorepo, Radix UI, TanStack Query, Stripe + Airwallex, NextAuth.
  • Bus operations SaaS for US school districts. Led a major frontend refactor — up to 7× perf gains, Webpack→Vite, Redux→RTK Query, FSD architecture.
  • Adtomic — Amazon advertising automation: keyword campaigns, price and competitor monitoring. Built dashboards used by Amazon sellers at scale.