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OPTIVEUM sp. z o.o.

Senior Frontend (React) Developer

OPTIVEUM sp. z o.o. Capon Bridge, West Virginia, United States · PLN 270K/yr

Outsourcing and Offshoring Consulting · 2-10 employees

4 h ago
react Senior (5-10 yrs) Full-time United States
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About the role

You will contribute to the development and maintenance of an investment fund administration UI application using modern technologies. The role involves collaborating with cross-functional teams to deliver solutions, troubleshoot issues, and ensure high code quality.

What they look for

React.js TypeScript React Query React Testing Library Material UI Tailwind React Form Hook-oriented programming Java SpringBoot TanStack Jenkins JavaScript Agile

Requirements

Candidates must have strong proficiency in React.js, TypeScript, and modern frontend testing and styling libraries. Experience with hook-oriented programming and a collaborative mindset within an Agile environment are essential.

Benefits

B2B contract support Modern tech stack Financial domain project exposure

Full description

Senior Frontend (React) Developer

  • Rate: up to 130 PLN/h net + VAT (B2B)
  • Work Model: Hybrid (3 days per week from the office)
  • Location: Warsaw, Poland
  • Engagement: Full-time (40 hours/week)

About the Role:

We are Optiveum – your recruitment and contracting partner. We are currently looking for a Senior React Developer to join the team of our client, a renowned organization operating in the financial and investment sector. In this role, you will work alongside the current Frontend Developer on the development, maintenance, and support of an Investment Fund Orders’ processing administration UI application.

Please note: Optiveum is the recruitment and contracting party for this role. You will be signing the cooperation agreement directly with us.

Responsibilities:

  • Contributing to the ongoing development of the redesigned UI application using modern technologies and implementing new business requirements.
  • Supporting the preparation, stabilization, and production rollout of upcoming releases.
  • Providing application support, troubleshooting, and bug fixing for existing and newly delivered functionalities.
  • Taking over day-to-day UI support responsibilities to ensure continuity of operations.
  • Improving and maintaining code quality, including the remediation of identified vulnerabilities and framework dependencies.
  • Collaborating closely with Backend Developers, Business Analysts, Test Engineers, and end-users to clarify requirements, investigate issues, and deliver solutions.
  • Participating in Agile team activities, including backlog refinement, sprint planning, reviews, and production support.

Must-have skills:

  • React.js (v18 or higher)
  • React Query
  • TypeScript
  • React Testing Library
  • Material UI
  • Tailwind
  • React Form
  • Hook-oriented programming
  • Strong communication skills

Nice-to-have skills:

  • Basics of Java and SpringBoot
  • Other TanStack libraries
  • Jenkins
  • General JavaScript proficiency

What we offer:

  • Transparent cooperation—Optiveum will be your dedicated contracting partner.
  • Seamless B2B contract setup and ongoing support.
  • Opportunity to work on a modern tech stack within a complex, financial-domain project.

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