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
Full-Stack Developer with 3 years of hands-on project experience building e-commerce platforms and internal
business applications using React, Next.js, TypeScript, Node.js, and NestJS. Experienced in developing product
catalogs, search and filtering, checkout workflows, payment integrations, REST APIs, role-based admin interfaces,
and database-driven business processes. Comfortable working across frontend and backend, improving existing
functionality, designing reusable components, and collaborating on application architecture and code quality.

TECHNICAL SKILLS
• Frontend: React, Next.js, JavaScript, TypeScript, HTML5, CSS3, Tailwind CSS, shadcn/ui
• Backend and Databases: Node.js, NestJS, Express.js, PostgreSQL, MongoDB / Mongoose, Prisma, Drizzle
ORM, REST APIs
• State & Client Architecture: Redux Toolkit / RTK Query, TanStack Query, 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, code review

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

PROFESSIONAL EXPERIENCE
Full-Stack Developer May 2024 - September 2026
ITRex Group Ukraine
• Built automotive catalog and product-discovery experiences in Next.js, connecting a 5-step vehicle selector, Customer

Garage, catalog filtering, and PDP compatibility flows.
• Designed a vehicle-fitment contract with engine- and generation-level rules, returning 4 explainable outcomes instead of

treating incomplete compatibility data as a successful match.
• Built a server-authoritative checkout flow that revalidated price, currency, listing status, and stock before inventory

reservation and pending-order creation.
• Implemented repeat-safe payment processing using checkout idempotency, transactional stock validation, verified Stripe

webhooks, and duplicate-event protection.
• Prevented lost inventory updates with optimistic concurrency using expectedVersion checks and recoverable 409 Conflict

handling across supplier and checkout operations.
• Extended NestJS/Prisma contracts for catalog filtering, supplier membership, and scoped variant search, replacing

frontend workarounds with reusable backend capabilities.
Frontend Developer October 2023 - March 2024
Binary Studio Ukraine
• Delivered end-to-end features for a data-intensive recruitment CRM using Next.js, React, and TypeScript, covering

interconnected candidate, vacancy, client, submission, and team-management workflows.
• Built an 8-stage candidate pipeline with role-aware transitions, rejection feedback, stage history, and recruiter activity

tracking, giving teams clear visibility into candidate progress.
• Implemented role-aware CRM experiences across 4 user roles and 25+ permissions, integrating protected UI flows with

server-side authorization and tenant-scoped data access.
• Developed a server-rendered analytics dashboard with recruitment KPIs, pipeline conversion, vacancy distribution, recent

submissions, and team activity data.
• Improved high-frequency recruitment workflows with server-side search, filtering, pagination, persistent filters, responsive

layouts, and clear loading, validation, and empty states.
• Contributed to reliable full-stack workflows using PostgreSQL and Drizzle ORM, including transactional mutations,

audit history, scoped queries, and targeted cache invalidation across interconnected CRM entities.

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