Remote Frontend Engineer – React/TypeScript & Performance

JustMarkets; United States; Remote; USD 120,000 - 160,000; Full time

Benefits offered by this job

Remote work

Medical insurance

20 vacation days per year

10 sick leave days per year

Public holidays as per company list

Education budget

Language learning budget

Wellness budget

Job summary

JustMarkets is seeking a senior frontend engineer to drive feature development with a focus on React components. You will optimize performance across the application, participate in architectural discussions, and support deployments.

You will collaborate in Scrum ceremonies, write tests with Vitest/Jest, and help maintain documentation. Strong TypeScript/Javascript skills and 5+ years of experience are required.

Qualifications

• 5+ years of frontend development experience, primarily with ReactJS.
• Strong knowledge of TypeScript and JavaScript.
• Experience with state management using Zustand.
• Experience with GraphQL and API design.
• Practical experience with WebSocket.
• Experience writing tests with Vitest or Jest.
• Experience with Vite build tooling.
• Solid understanding of frontend architecture and scalable solutions.
• Experience optimizing performance and user experience.
• Ability to work independently and own tasks.
• Maintainable, clean code and development best practices.
• English level: Intermediate or higher.

Responsibilities

• Develop new frontend features with a focus on React components.
• Optimize application performance and UX across the product.
• Participate in architectural discussions and technical design.
• Conduct code reviews and support production deployments.
• Collaborate in Scrum ceremonies, OKR planning, and retrospectives.
• Write unit/integration tests and maintain documentation.

Skills

ReactJS

TypeScript

JavaScript

Zustand

GraphQL

WebSocket

Vitest/Jest

Vite

Frontend architecture

Performance optimization

Code quality

English communication

Education

Bachelor's degree in Computer Science or related discipline

Job description

JustMarkets is seeking a senior frontend engineer to drive feature development with a focus on React components. You will optimize performance across the application, participate in architectural discussions, and support deployments.

You will collaborate in Scrum ceremonies, write tests with Vitest/Jest, and help maintain documentation. Strong TypeScript/Javascript skills and 5+ years of experience are required.