Владислав

Vladislav Tkhorenko
Senior Full-Stack Engineer / Tech Lead · React, Next.js, NestJS, AI Tooling
Dnipro, Ukraine | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | GitHub: VladThorenco

SUMMARY
Senior Full-Stack Engineer and Tech Lead with 6+ years of experience designing and shipping scalable,
production-grade web platforms end-to-end. Deep expertise across the modern React/Next.js stack and a
strong backend track record with NestJS, PostgreSQL, Prisma, Redis and BullMQ. Currently leading frontend
architecture at BSG while independently architecting and operating ARTBIT — a commercial cross-platform
social media management SaaS built end-to-end. Hands-on with AI-assisted engineering — building custom
Claude Code agents, skills and hooks to accelerate team workflows, automate code review and standardize
delivery. Comfortable owning architecture, infrastructure (Docker, Hetzner VPS, Nginx, Cloudflare), and
mentoring engineers on clean architecture and pragmatic delivery.

CORE SKILLS
Frontend React 18/19 (Hooks, HOC, Context, Server Components), Next.js 14/15/16 (App Router, SSR,
ISR, SSG, Middleware, Edge Runtime), TypeScript, Redux Toolkit, Redux-Saga, MobX,
Zustand, Ant Design 5, Material UI 5, Tailwind CSS, Styled Components, GraphQL (Apollo,
URQL), REST
Mobile React Native, Expo, Zustand state management, native module integration
Backend Node.js, NestJS (modular architecture, guards, interceptors, pipes), Express, REST &
GraphQL APIs, WebSockets / Socket.io, BullMQ workers & queues, OAuth 2.0 / OpenID,
JWT, NextAuth v5, OAuth integrations with Meta / TikTok / LinkedIn / YouTube
Data & Infra PostgreSQL, Prisma (multi-schema), MongoDB, Redis, Docker & Docker Compose, Hetzner
VPS, Nginx, Cloudflare, GitHub Actions / Bitbucket Pipelines, Swagger / Scalar API docs
AI Engineering Claude Code — designing custom agents, authoring reusable skills, configuring hooks for
workflow automation (notifications, lint/test gates, WebStorm integration); integrating LLM
APIs into product features; prompt design and evaluation for production use cases
Quality & React rendering optimization (memo, lazy loading, code-splitting, bundle analysis), Lighthouse
Performance / Core Web Vitals tuning, Jest, React Testing Library, Cypress, ESLint, Prettier
Architecture Multi-tenant SaaS, RBAC + 2FA (otplib), audit logging, centralized error tracking, monorepos
(Turborepo), microservices, rate limiting, DDoS protection, partial-failure orchestration

PROFESSIONAL EXPERIENCE
Senior React Developer / Tech Lead · BSG April 2023 — Present
● Lead frontend architecture across multiple admin panels and a high-load testing platform; drove an architecture
redesign that reduced technical debt by ~30% and cut initial load time by 50% via SSR/ISR migration in Next.js,
rendering optimizations and bundle splitting.
● Designed and maintain an internal component library (Ant Design 5 + Tailwind), standardizing UI primitives and

accelerating delivery across product teams.
● Integrated Socket.io / WebSockets for real-time dashboards and analytics streams; introduced Docker-based

local environments and CI pipelines for predictable deployments.
● Currently delivering an AI-powered product line — integrating LLMs and ML models into a React/Next.js

application for automation, content workflows and assisted UX.
● Mentor engineers, run code reviews, set frontend standards (ESLint, testing, accessibility) and own

architectural decisions for new features.
Full-Stack Engineer — Cross-Platform Social Media Management · 2024 — Present
ARTBIT (independent SaaS, founder & lead engineer)
● Architected and shipped a multi-tenant SaaS for cross-platform publishing across Instagram, TikTok, LinkedIn,
Threads and YouTube via official APIs.
● Built end-to-end OAuth 2.0 flows and content publishing pipelines with NestJS + BullMQ workers, handling
partial failures, retries and idempotent cross-platform orchestration.
● Implemented authentication with NextAuth v5 (split Edge Runtime configuration), RBAC with 2FA via otplib,

device-aware session management and rate limiting.
● Owned platform compliance: Meta App Review & Business Verification, TikTok production review, and LinkedIn

developer verification.
● Built internal infrastructure: real-time updates via Socket.io, notification system (Telegram / Viber fan-out), audit

logging, centralized error tracking with a /dev/errors dashboard, and a typed retry utility.
● Authored Swagger / Scalar API documentation and a URL-driven filter hook (useUrlFilters) for Ant Design

tables, making admin UX deeply linkable.
● Hardened security: investigated and remediated a critical Next.js CVE (GHSA-9qr9-h5gf-34mp) including

incident response on a compromised container.
● Operate production infrastructure on Hetzner VPS with Docker Compose, Nginx and Cloudflare.

● Stack: Next.js App Router, TypeScript, NestJS, PostgreSQL, Prisma, Redis, BullMQ, Docker.

React Developer · AGCSOFT August 2022 — April 2023
● Built complex state flows with Redux + RxJS and refactored legacy class components into reusable, optimized
hooks.
● Improved accessibility (a11y) and lifted Lighthouse scores from ~60 to 90+ across key pages.

● Collaborated closely with backend on GraphQL query design and caching.

React Developer · Lanars September 2021 — August 2022
● Built and maintained a high-load real-time analytics dashboard.
● Implemented code-splitting and lazy loading for measurable speed gains.
● Partnered with UI/UX to deliver mobile-first interactive interfaces.

React Developer · Lardi March 2021 — September 2021
● Migrated a legacy codebase to React + TypeScript, improving maintainability and DX.
● Built dynamic dashboards with Chart.js / D3.js.
● Implemented authentication via NextAuth.js and JWT.

React Developer · Wirards Dev May 2019 — April 2021
● Developed an admin panel with Ant Design 5 and Redux Toolkit.
● Refactored and modularized SCSS, improving performance and maintainability.

AI & OPEN-SOURCE WORK
• Author of custom Claude Code agents and reusable skills tailored to ARTBIT delivery workflows — covering
code review, migration generation, release notes and incident triage.
• Built Claude Code hooks for delivery automation: completion sounds, WebStorm integration, and lint/test gates
that run before commits.
• Prototyped a fitness React Native app with Expo and a Zustand-based auth store; covers token refresh,
secure storage and offline-first UX.

LEADERSHIP & SOFT SKILLS
Tech leadership and mentorship · architectural decision-making · owning production incidents end-to-end · clear
technical writing and code review · pragmatic over clever — bias toward clean architecture and shipping ·
self-directed learning and continuous improvement.

EDUCATION
Front-end Development — Step Academy (JavaScript, Node.js, React), 1 year
Computer Engineering — Dnipropetrovsk National University of Railway Transport, 2015–2018

ADDITIONAL
• Open to Senior / Principal / Tech Lead roles — remote or relocation.
• Comfortable owning a product from idea to production infrastructure.
• Active in open-source and continuous learning — sharing patterns and notes from production work on GitHub.