Senior UI Engineer - Hybrid (Belfast) React & Data Viz

Congruity360; Belfast City District; Hybrid; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Pension scheme.

Flexible working hours and hybrid work

Health insurance and wellness programs

Generous holiday leave and paid time

Flexible working policy

Volunteer policy

Job summary

Congruity360 is seeking a Senior UI Engineer to join our engineering team in Belfast. You will focus on React-based interfaces, collaborate with designers and product managers, and contribute to a fast-paced development cycle delivering secure, data-rich applications.

The role requires strong JavaScript/TypeScript, 3+ years React, WCAG, and experience with component libraries. Hybrid work with at least two days in the Belfast office, and a passion for creating accessible, high-performance UI.

Qualifications

• 5+ years of experience in front-end development.
• Experience translating complex requirements into intuitive UI.

Responsibilities

• Own and drive UI decisions for React-based interfaces.
• Collaborate with designers and product managers to translate requirements into deliverables.
• Code in a fast-paced development environment with a focus on quality and performance.
• Ensure accessibility and responsive design across data-rich interfaces.

Skills

TypeScript

JavaScript

React

UX design

WCAG

Semantic HTML

Component libraries

Tailwind CSS

REST APIs

State management

Data-rich interfaces

Performance optimization

Education

University degree in Computer Science, Mathematics, Physics, or related field

Tools

React Aria

Radix

Tailwind CSS

D3

visx

ECharts

TanStack Table

Job description

Congruity360 is seeking a Senior UI Engineer to join our engineering team in Belfast. You will focus on React-based interfaces, collaborate with designers and product managers, and contribute to a fast-paced development cycle delivering secure, data-rich applications.

The role requires strong JavaScript/TypeScript, 3+ years React, WCAG, and experience with component libraries. Hybrid work with at least two days in the Belfast office, and a passion for creating accessible, high-performance UI.