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JustMarkets

Frontend Engineer

Ukraine
Level
Senior

Not stated in the posting: salary, work type, visa.

Open. First seen 2 October 2026.

About the role

Responsibilities

  • Develop new features, primarily focused on frontend components
  • Optimize and improve performance across the application
  • Participate in architectural discussions and technical design
  • Conduct code reviews and support production deployments
  • Collaborate in Scrum ceremonies, OKR planning, and team retrospectives
  • Write clear unit/integration tests and maintain documentation for implemented functionality

Requirements

  • 5+ years of experience in frontend development, mainly with ReactJS
  • Strong knowledge of TypeScript and JavaScript
  • Experience with state management tools (Zustand, Redux, etc)
  • Experience working with GraphQL and participating in API design
  • Practical experience with WebSocket
  • Experience writing tests with Vitest or similar frameworks (e.g., Jest)
  • Experience with build tools (Vite, WebPack, etc)
  • Experience adopting AI-assisted development tools in daily workflows and critically evaluating and validating AI-generated results
  • Solid understanding of frontend architecture and scalable solutions
  • Experience in optimizing application performance and user experience
  • Ability to work independently and take full ownership of tasks
  • Experience in writing clean, maintainable code and following development best practices
  • English level: Intermediate and above

Will be a plus

  • Bachelor’s degree in Computer Science or a related discipline
  • Proven contributions to established open-source projects
  • Hands-on experience developing and maintaining real-time applications
  • Professional background in the fintech domain

We offer

  • 20 paid vacation days per year
  • 10 paid sick leave days per year
  • Public holidays as per the company's approved Public holiday list
  • Medical insurance
  • Opportunity to work remotely
  • Professional education budget
  • Language learning budget
  • Wellness budget (gym membership, sports gear and related expenses)

What this role asks for

Standard for frontend roles

JavaScript · React · TypeScript

Common in frontend postings at any company.

Compared with JustMarkets's other open jobs.

The team: Product Engineering HIRES STEADILY

This role is one of 5 open in Product Engineering. 1 was posted in the last 30 days and the oldest in July: a team that hires all year rather than one being built.

WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS

REST (3 of 5), .NET (2 of 5), AWS (2 of 5), C# (2 of 5), CI/CD (2 of 5), GraphQL (2 of 5), JavaScript (2 of 5)

OTHER ROLES ON THIS TEAM

From the team and dates on JustMarkets's own job board.

Salary context

12 other open postings titled Frontend Engineer state a salary: median USD 150,000 to USD 205,000 a year.

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