Junior UI Developer

Company Description Craxel is at the forefront of innovation in data analytics and artificial intelligence. Our revolutionary Black Forest™ technology provides an advanced knowledge infrastructure that enables AI-driven decision-making at any scale with unmatched speed and efficiency. By consolidating vast, complex, and fragmented datasets into AI-ready knowledge graphs, Black Forest empowers organisations to gain instant, actionable insights. From national security to financial intelligence, Craxel delivers transformative solutions for data-driven decision-making. We are seeking a Frontend Developer for a full-time hybrid role based in Belfast, with flexibility for some remote work. In this role, you will build and maintain the UI to our Black Forest™ data platform, you will also be responsible for the design and implementation of user interfaces for web applications, ensuring a seamless user experience. Day-to-day responsibilities include developing responsive web designs, collaborating with back-end developers to integrate APIs, and enhancing application performance. You will contribute to building scalable and innovative web solutions while working within a collaborative and fast-paced environment. REST API integration against BFKI query, config, and data endpoints Data exploration UI: charts, geo maps, time-series, tabular query results Async operation handling: service start-up feedback, connection testing, error states Unit and component testing Languages and Frameworks JavaScript/TypeScript HTML CSS Understanding of query construction and result rendering from API responses Role-aware UI patterns (permission-based rendering, route guards) Data Vocabulary Familiarity with common visualization types: geo maps, time series, pie/bar/line charts, tabular data Ability to translate customer data requirements into appropriate frontend implementations Agile, Jira React, Angular D3.js, Chart.js Modern UI Design Patterns UX/CX design (e.g.

Testing Framework Experience Unit: Jest AWS or GCP Bonus Points Public GitHub with meaningful frontend contributions Technical blog posts, conference talks, or published writing on data visualization or frontend architecture A competitive salary and bonus plan ~ Salary ranging from £40-50k depending on experience ~25 days holidays plus 9 UK public holidays ~ Private medical insurance including family cover, Dental and Optical ~5% employer-matched pension to invest in your future ~ Personal and business travel insurance ~ A dedicated training and development allowance ~ A health and well-being allowance to support life inside and outside of work ~ Hybrid working, with flexibility