Alexey

Alexey Chermalykh
FullStack Developer | React | Next.js | Node.js | NestJS |
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 software development experience building
production web applications with React, Next.js, TypeScript, Node.js, and NestJS. Experienced in
delivering end-to-end features across responsive SaaS interfaces, dashboards, complex forms,
REST APIs, GraphQL APIs, microservices, authentication, payment integrations, and real-time
functionality. Skilled in state management, data fetching, server-side rendering, frontend
performance optimization, automated testing, relational and NoSQL databases, event-driven
architecture, Docker, Kubernetes, AWS, CI/CD, and production support.

Professional Experience

Fullstack Developer, Wandry 07/2025 – 04/2026
•Deliver full-stack functionality using TypeScript, Node.js, NestJS, React, and Next.js,
including REST APIs, microservices, responsive interfaces, and third-party integrations.
•Implement JWT/OAuth 2.0 authentication, RBAC, WebSockets, webhooks, validation, and
scheduled jobs.
•Work with PostgreSQL, MySQL, Prisma, TypeORM, Redis, BullMQ, Kafka, and gRPC to build
reliable data and event-driven workflows.
•Add Jest/Supertest tests and Swagger documentation; support Docker, AWS, Kubernetes,
CI/CD, Sentry monitoring, and code reviews.

Part-time Frontend Developer, NDA SAAS Client 04/2025 – 02/2026
Developed SaaS dashboards, reusable UI components, and complex forms using React,
•

Next.js, TypeScript, and Tailwind CSS.
Managed client and server state with Redux Toolkit, Zustand, React Context API, TanStack
•

Query, and Axios.
Integrated REST APIs, authentication, protected routes, role-based interfaces, and validation
•

using React Hook Form, Formik, Zod, and Yup.
Improved SSR/SSG rendering, data fetching, performance, responsiveness, error handling,
•

and frontend test coverage.

Fullstack Developer, Fernir 01/2024 – 07/2025
•Developed full-stack functionality using TypeScript, Node.js, NestJS, React, and Next.js,
including REST and GraphQL APIs.
•Implemented JWT/OAuth 2.0 authentication, RBAC, Stripe payments, subscriptions, refunds,
and webhook processing.
•Worked with PostgreSQL, MySQL, MongoDB, Redis, Prisma, TypeORM, BullMQ, Kafka, gRPC,
and WebSockets.
 Added Jest/Supertest tests, Swagger documentation, Docker environments, and GitLab
•

CI/CD workflows.

Frontend Developer, Aura Digital 2023 – 2024
Developed responsive React applications and reusable interfaces using JavaScript,
•

TypeScript, HTML5, CSS3, and Tailwind CSS.
Integrated REST APIs, authentication, state management, forms, validation, and error-
•

handling flows.
Improved mobile responsiveness, accessibility, cross-browser compatibility, rendering
•

performance, and interface consistency.

Skills

Technical Skills
Frontend: React, Next.js, Vue.js, TypeScript, JavaScript (ES6+), HTML5, CSS3, SCSS/Sass,
Tailwind CSS, CSS Modules, Material UI, Ant Design, Responsive Web Design, Mobile-first
Development, Component-based Architecture, Reusable UI Components, Accessibility, Cross-
browser Compatibility
State Management and Data Fetching: Redux Toolkit, Zustand, React Context API, TanStack
Query (React Query), Axios, REST API Integration, Server State Management, Client-side
Caching, Pagination, Loading States, Error Handling
Next.js and Performance: App Router, Server-side Rendering (SSR), Static Site Generation
(SSG), Incremental Static Regeneration (ISR), Client-side Rendering (CSR), Dynamic Routing,
Middleware, Code Splitting, Lazy Loading, Rendering Performance Optimization
Forms and Validation: React Hook Form, Formik, Zod, Yup, Complex Forms, Client-side
Validation, Server-side Validation, Form Submission, Error Handling
Backend and APIs: Node.js, NestJS, Express.js, TypeScript, RxJS, REST APIs, GraphQL, gRPC,
Microservices, WebSockets, Swagger/OpenAPI, Webhooks, Cron Jobs, Third-party API
Integrations
Databases and ORM: PostgreSQL, MySQL, MongoDB, Redis, Prisma, TypeORM, SQL, Schema
Design, Migrations, Transactions, Query Optimization
Architecture and Messaging: Kafka, BullMQ, Event-driven Architecture, Background Jobs,
Caching, Modular Architecture Authentication and Security: JWT, OAuth 2.0, Refresh Tokens,
RBAC, Passport.js, CORS, Input Validation, Authentication Flows, Protected Routes, Role-based
UI
Payments and Integrations: Stripe, Payments, Subscriptions, Refunds, Payment Webhooks,
OpenAI API, Gemini API
Testing: Jest, Supertest, React Testing Library, Cypress, Playwright, Unit Testing, Integration
Testing, End-to-end Testing DevOps and Monitoring: AWS, Docker, Kubernetes, Nginx, GitLab
CI/CD, GitHub Actions, Sentry
Development 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 09/2019 – 07/2024 | Odesa, Ukraine