Flowfinity Wireless is a proven provider of flexible enterprise mobile app software. We help businesses across industries run more efficiently by replacing paper and spreadsheets with fully customizable workflow apps. Our software enables teams in the field to access, report, and share information where and when they need to.
12 травня 2026
Middle Frontend Data Visualization Engineer (D3, Charts, Dashboards) (вакансія неактивна)
Київ
We are seeking a Middle Frontend Engineer or Full-stack Engineer with frontend focus to join our product-engineering team (based in Kyiv).
Responsibilities
- Design, develop, and integrate dashboard components and new chart types to enhance the functionality and versatility of our charting library
- Implement performance improvements for both new and existing components, focusing on load times, responsiveness, and overall efficiency with large datasets
- Design and implement APIs for efficient data retrieval and processing, ensuring they meet performance and security standards
- Work closely with backend developers to integrate APIs with frontend components, ensuring smooth data flow and interaction between frontend dashboards and backend systems
Requirements
- Solid experience building interactive visualizations with D3.js or similar low-level tools, including custom chart elements and interactions
- Proficiency in modern JavaScript/TypeScript (ES6+, modules, async/await, performance patterns)
- Proficiency with HTML5, CSS3, SASS/SCSS for complex data-heavy UIs
- Hands-on experience with Canvas and SVG for custom graphics; familiarity with WebSockets for real-time data updates
- Practical knowledge of Canvas/SVG rendering optimizations, hit-testing, zooming/panning, handling medium-to-large datasets
- Experience designing reusable APIs and components for data visualization, focusing on extensibility and maintainability
- Experience in performance profiling for interactive UIs
- Experience with design/UX principles and ability to participate in design discussions
- Strong analytical skills; ability to debug complex rendering/performance issues
- Comfort working with existing complex codebases and extending charting libraries
Considered as a plus
- Knowledge of dataviz best practices (perceptual encoding, color scales, accessibility for charts)
- Experience with API development (REST/GraphQL)
- Experience building UIs for data-heavy applications (dashboards, analytics platforms)
Location
This opportunity can be remotely based within Ukraine or hybrid/remote in Kyiv (our office is located next to the Livoberezhna metro station)