Senior React Frontend Engineer — Hybrid (Warsaw)

OPTIVEUM sp. z o.o.; Warszawa; Hybrid; PLN 220,000 - 320,000; Full time

Benefits offered by this job

Hybrid work model (3 days in the офfce

Contracting partner: Optiveum

Financial-domain project

Job summary

Optiveum – your recruitment partner – is seeking a Senior React Developer to join a financial-domain project. You will contribute to the UI renewal, work with Backend and QA teams, and help maintain and support the investment fund orders administration interface.

The role is full-time with a hybrid work model (3 days in the office in Warsaw) and a B2B contract through Optiveum. You will collaborate across agile teams to deliver robust, secure UI solutions.

Qualifications

• Proficient in React.js v18+ and modern UI tech stacks.
• Experience with React Query, TypeScript and RTL for testing.
• Knowledge of Material UI and Tailwind for styling.
• Strong communication and teamwork with cross-functional teams.

Responsibilities

• Develop and maintain the redesigned UI using modern tech and new business requirements.
• Assist in production rollout and stabilization of releases.
• Provide issue troubleshooting and bug fixes for new and existing features.
• Take ownership of day-to-day UI support to ensure operational continuity.
• Improve code quality and address vulnerabilities and dependencies.
• Collaborate with Backend, QA, BA, and end users to clarify requirements.

Skills

React.js (v18+)

React Query

TypeScript

React Testing Library

Material UI

Tailwind

React Form

Hook-oriented programming

Strong communication skills

General JavaScript proficiency

Tools

Jenkins

TanStack libraries

Basics of Java and SpringBoot

Job description

Optiveum – your recruitment partner – is seeking a Senior React Developer to join a financial-domain project. You will contribute to the UI renewal, work with Backend and QA teams, and help maintain and support the investment fund orders administration interface.

The role is full-time with a hybrid work model (3 days in the office in Warsaw) and a B2B contract through Optiveum. You will collaborate across agile teams to deliver robust, secure UI solutions.