Максим

Dyvnych Maksym
* Ukraine [open contact info](look above in the "contact info" section) # [open contact info](look above in the "contact info" section)
ï [open contact info](look above in the "contact info" section) Telegram
PROFESSIONAL SUMMARY
Fullstack Developer with 2 years of hands-on project experience building e-commerce platforms, CRM systems, and
business-oriented web applications using React, Next.js, TypeScript, Node.js/NestJS, and PostgreSQL. Experienced
in implementing end-to-end features, REST APIs, payment integrations, transactional workflows, and role-based
access control. Skilled in AI-assisted development using Claude Code and Codex for feature implementation,
debugging, refactoring, and code review, with a focus on reliable delivery and maintainable architecture.

TECHNICAL SKILLS
• Frontend: React, Next.js, TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS, shadcn/ui
• Backend and Databases: Node.js, NestJS, Express.js, PostgreSQL, Prisma, Drizzle ORM, REST APIs

• State & Client Architecture: TanStack Query, Redux Toolkit, Zustand, optimistic UI, client-server

synchronization
• Commerce & Security: Stripe, JWT authentication, RBAC, authorization, idempotent operations

• Testing & Quality: Playwright, Vitest, Jest, React Testing Library, Lighthouse CI, WCAG accessibility testing

• Engineering Workflow: Git, GitHub Actions, Docker, CI/CD, design patterns, Jira, Agile

• AI-assisted Development: Codex, Claude Code, AI-assisted implementation, debugging, refactoring, code

review
• Languages: Ukrainian (Native), English (B1)

PROFESSIONAL EXPERIENCE
Full-Stack Developer May 2025 - September 2026
ITRex Group Ukraine
• Turned vehicle compatibility into an explainable product decision by integrating Garage context and four reason-coded

fitment outcomes across Catalog and Product Detail Pages.
• Reduced checkout failure risk by implementing server-authoritative price, currency, and inventory validation, with

recoverable UI for stale-cart and concurrent-stock conflicts.
• Lowered purchase friction by delivering persistent Guest Cart and Checkout flows, enabling purchases without upfront

registration.
• Built privacy-aware experiences for Customers, Suppliers, Support Managers, and Administrators, combining RBAC with

identity-isolated TanStack Query caching.
• Implemented reliable Stripe payment processing using verified webhooks, idempotent operations, and transactional

inventory validation to prevent duplicate payments and inconsistent orders.
• Extended NestJS/Prisma APIs to support frontend requirements, replacing client-side workarounds with reusable

server-side filtering, supplier membership, and scoped search.
Frontend Developer October 2024 - March 2025
Binary Studio Ukraine
• Developed internal recruitment CRM features using Next.js, React, TypeScript, and PostgreSQL, automating candidate

management, vacancy tracking, submissions, and team workflows across interconnected business entities.
• Built an 8-stage recruitment pipeline providing visibility into candidate progress, ownership, rejection context, and

recruiter activity.
• Developed actionable analytics dashboards with pipeline conversion metrics, vacancy distribution, hiring activity, and

operational KPIs.
• Designed role-aware CRM interfaces across 4 user roles and 25+ permissions, integrating protected UI workflows with

server-side authorization.
• Improved recruitment workflows through server-side search, pagination, persistent filters, responsive layouts, and clear

loading, validation, and empty states.

EDUCATION
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” 2020 - 2024
Faculty of Informatics and Computer Engineering, Computer Engineering Kyiv, Ukraine
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” 2024 - 2025
Faculty of Informatics and Computer Engineering, Information Management Systems and Technologies Kyiv, Ukraine