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.
Role Description
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.
What You Will Work On
- REST API integration against BFKI query, config, and data endpoints
- Data exploration UI: charts, geo maps, time-series, tabular query results
- Complex form design and validation: nested config forms, credential inputs
- Async operation handling: service start-up feedback, connection testing, error states
- Unit and component testing
- Evolving the UI as BFKI APIs and capabilities expand
Must Have
2+ Years experience in a relevant role
Languages and Frameworks
- JavaScript/TypeScript
- HTML
- CSS
API Integration
- Experience with REST
- Understanding of query construction and result rendering from API responses
UI Patterns
- Complex form design and validation
- Role-aware UI patterns (permission-based rendering, route guards)
- Async operation handling and error state management
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
General
Git, GitHub Actions
Agile, Jira
Good to Know
- Modern Framework Experience
- React, Angular
- Modern Library Experience
- D3.js, Chart.js
- Modern UI Design Patterns
- WebSocket experience
- UX/CX design (e.g. Figma)
- OpenTelemetry
- Testing Framework Experience
- Unit: Jest
- E2E:Selenium, Playwright, Cypress
- Experience designing for WCAG compliance
- 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
What we offer
- 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
- Death in service cover and income protection
- 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
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.
Role Description
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.
What You Will Work On
- REST API integration against BFKI query, config, and data endpoints
- Data exploration UI: charts, geo maps, time-series, tabular query results
- Complex form design and validation: nested config forms, credential inputs
- Async operation handling: service start-up feedback, connection testing, error states
- Unit and component testing
- Evolving the UI as BFKI APIs and capabilities expand
Must Have
2+ Years experience in a relevant role
Languages and Frameworks
- JavaScript/TypeScript
- HTML
- CSS
API Integration
- Experience with REST
- Understanding of query construction and result rendering from API responses
UI Patterns
- Complex form design and validation
- Role-aware UI patterns (permission-based rendering, route guards)
- Async operation handling and error state management
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
General
Git, GitHub Actions
Agile, Jira
Good to Know
- Modern Framework Experience
- React, Angular
- Modern Library Experience
- D3.js, Chart.js
- Modern UI Design Patterns
- WebSocket experience
- UX/CX design (e.g. Figma)
- OpenTelemetry
- Testing Framework Experience
- Unit: Jest
- E2E:Selenium, Playwright, Cypress
- Experience designing for WCAG compliance
- 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
What we offer
- 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
- Death in service cover and income protection
- 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
…