Senior JavaScript (React) Developer

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profile Job Location:

Sofia - Bulgaria

profile Monthly Salary: Not Disclosed
Posted on: 21-08-2025
Vacancies: 1 Vacancy

Job Summary

Senior JavaScript(React) Developer

We are looking for a Senior JavaScript Developer with React to join a well established team.

You will join the team in building a new product tailored for the sewing industry.

The system focuses on optimizing production workflows real-time tracking and improving efficiency.

Job Scope:

As a Senior JavaScript Developer you will play a key role in enhancing our web and mobile applications. If you thrive in a fast-paced startup environment and are passionate about both web and mobile development this opportunity is for you!

Technical Requirements:

Core Skills

React: Proficient in React (Hooks Context API Zustand). Experience with Server Components and performance optimizations.

TypeScript & JavaScript: Strong expertise in TypeScript (types generics interfaces) and modern JavaScript (ES6).

GraphQL & Apollo: Skilled in GraphQL Apollo Client caching strategies and state management.

State Management: Experience with React Query Zustand Redux Toolkit and Apollo Clients local state management.

UI & Performance: Builds responsive accessible UIs with Styled Components Emotion Tailwind. Experience with Ag-Grid and performance tuning (lazy loading bundle optimization).

Additional Requirements (Nice to Have):

  • Experience working with mobile-friendly PWA (Progressive Web Apps).
  • Exposure to React Native for mobile app development.
  • Knowledge of WebSockets real-time data streaming or WebRTC.
  • Experience with Edge Computing & Serverless Architectures (e.g. Vercel).

Soft Skills:

  • Passion for intuitive high-quality user experiences.
  • Strong problem-solving and debugging skills.
  • Attention to detail with a keen eye for UI/UX.
  • Eager to learn and explore new frontend technologies.
  • Collaborates effectively in cross-functional teams with strong communication skills.


Company Offer:

  • Stable long-term employment in a product company
  • Flexible working hours
  • Nurturing and supporting environment
  • Strong team-oriented culture with 1 day office gatherings on Wednesday


Interview Process:

  1. Discovery call
  2. Technical Interview
  3. Final interview
  4. Offer

Apply Now by sending your CV in English with contact details in it ;)

Only shortlisted candidates will be invited to an interview.

Your job search is strictly confidential.

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Required Experience:

Senior IC

Senior JavaScript(React) DeveloperWe are looking for a Senior JavaScript Developer with React to join a well established team.You will join the team in building a new product tailored for the sewing industry.The system focuses on optimizing production workflows real-time tracking and improving effic...
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Key Skills

  • Arm
  • CSS
  • C/C++
  • HTML5
  • React
  • Redux
  • Node.js
  • Angular
  • Ember.js
  • JavaScript
  • backbone.js
  • Operating Systems

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