Alexey

Alexey Chermalykh
Full-stack Developer | React, Next.js, Node.js, TypeScript
[open contact info](look above in the "contact info" section) [open contact info](look above in the "contact info" section) Odesa, Ukraine

[open contact info](look above in the "contact info" section) github.com/gh0styx

Profile

Full-stack Developer with 3.5+ years of commercial experience building web applications with
React, Next.js, TypeScript, Node.js, and NestJS. Experienced in developing responsive interfaces,
backend APIs, authentication, payment integrations, and real-time functionality. Comfortable
working across implementation, testing, deployment, monitoring, and production support.

Professional Experience

Fullstack Developer, Wandry 07/2025 – 04/2026
•Developed full-stack features using TypeScript, React, Next.js, Node.js, and NestJS.
•Built REST API endpoints and microservice functionality, including validation and third-
party service integrations.
•Implemented authentication and authorization with JWT, OAuth 2.0, and RBAC.
•Worked on WebSocket functionality, webhooks, scheduled jobs, background processing, and
event-driven workflows.
•Added automated tests with Jest and Supertest, maintained Swagger documentation, and
supported CI/CD, monitoring, and production environments.

Fullstack Developer, Fernir 01/2024 – 07/2025
•Delivered frontend and backend features with React, Next.js, Node.js, NestJS, and TypeScript.
•Developed REST and GraphQL APIs for application features and third-party integrations.
•Implemented authentication flows with JWT, OAuth 2.0, and role-based access control.
•Integrated Stripe payments, subscriptions, refunds, and webhook processing.
•Worked with PostgreSQL, MySQL, MongoDB, Redis, Prisma, TypeORM, BullMQ, Kafka, gRPC,
and WebSockets.
•Added Jest and Supertest coverage, Swagger documentation, Docker environments, and
GitLab CI/CD workflows.

Frontend Developer, Aura Digital 2023 – 2024
Developed responsive web interfaces with React, TypeScript, JavaScript, HTML, CSS, and
•

Tailwind CSS.
Integrated REST APIs, authentication, state management, forms, validation, and error-
•

handling flows.
Built reusable UI components and improved interface consistency across application pages.
•

Worked on mobile responsiveness, accessibility, cross-browser compatibility, and rendering
•

performance.

Skills

Technical Skills
Frontend: React, Next.js, Vue.js, Angular, TypeScript, JavaScript, HTML, CSS, SCSS, Tailwind CSS,
CSS Modules, Material UI, Ant Design
State and data fetching: Redux Toolkit, Zustand, React Context, TanStack Query, Axios
Next.js: App Router, SSR, SSG, ISR, CSR, dynamic routing, middleware, code splitting
Backend: Node.js, NestJS, Express.js, REST, GraphQL, WebSockets, Swagger/OpenAPI,
webhooks, cron jobs
Databases: PostgreSQL, MySQL, MongoDB, Redis, Prisma, TypeORM
Messaging and background processing: BullMQ, Kafka, gRPC
Authentication and payments: JWT, OAuth 2.0, RBAC, Passport.js, Stripe
Testing: Jest, Supertest, React Testing Library, Cypress, Playwright
DevOps and monitoring: Docker, Kubernetes, AWS, Nginx, GitLab CI/CD, GitHub Actions,
Sentry
Tools: Git, GitHub, GitLab, Postman, Jira, npm, Yarn, Vite, Webpack

Education

Master of Computer Science, National University "Odesa Polytechnic" 2024 – 2026

Bachelor's degree, IT STEP Computer Academy 2019 – 2024

Languages

English Ukrainian
Intermediate Native