FullStack Middle NextJS developer in Troyan S.V., FLP

The JDI company is looking for a developer in its FullStack Middle NextJS team to work on a project that will last approximately 6 months, with the possibility of continuing cooperation after the project is completed.

General information about the project

The project is being rewritten from React to Next.js with a full migration of functionality.

## Mandatory technical skills

### Next.js and React

- Experience with Next.js 14+ (App Router)

- Server Components and Client Components

- Server Actions and Route Handlers

- Working with API Routes and middleware

- Optimization: ISR, SSG, SSR

- Image Optimization and static assets

- Routing and navigation

### TypeScript

- Experience with TypeScript 5+

- Typing components, API, state

- Generics and utility types

- Working with typing external libraries

### State Management

- Redux Toolkit or Zustand

- Server State (React Query/TanStack Query)

- Client state (useState, useReducer)

- Persist state (localStorage, cookies). authorization (JWT, sessions). with data

- Document and signature processing

- Error handling and retry logic

### Action (Diia) Integration

- Working with certificates and encryption

- P7S/P7E formats

- Integration with Diia API

### Payment systems

- Portmone

- Creation of signatures and validation of payments

- Webhook handling

## Technical requirements

### Performance

- Core Web Vitals optimization

- Code splitting and lazy loading

- Image and asset optimization

- Data caching

### SEO

- Meta tags and Open Graph

- Structured data

- Sitemap and robots.txt - Canonical URLs Color contrast

## Additional skills (preferred)

- Experience with React Hook Form

- Experience with Chart.js or other graphics libraries

- Experience with react-select, react-datepicker and other UI libraries

- Experience with testing (Jest, React Testing Library)

- Experience with CI/CD (GitHub Actions, GitLab CI)

- Experience with Docker

## Personal qualities

- Responsibility and attention to detail

- Ability to work with legacy code and migrations

- Communication and teamwork

- Flexibility and readiness for changes

- Independence in solving problems

## Levelexperience

- Minimum of 1-2 years of commercial experience with React

- Minimum of 2-3 years of experience with Next.js

- Experience with TypeScript (minimum 1 year)

- Experience with third-party API integrations

- Experience with admin panels and complex forms