Senior Frontend (React) Developer
Summary
Senior React developer in Warsaw (hybrid, 3 days/week in office) building and supporting an investment fund order processing admin UI for a financial-sector client, contracted via Optiveum on a B2B basis. Core stack: React 18+, TypeScript, React Query, Material UI, and Tailwind.
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.