Senior Frontend Developer

Hello, We are looking for an experienced Senior Frontend Developer Work is generally performed remotely and independently of location.The project location is Frankfurt am Main, and services must be delivered onshore in Germany.On-site attendance may occasionally be required in justified exceptional cases.Project duration: 01 September 2026 to 31 December 2026 Description We are seeking a Senior Frontend Developer for the further development of a web-based railway traffic simulation platform using Angular, data-driven analytics views, interactive editors, and modern visualization components Mandatory Requirements Proven senior Angular development experience with more than 5 years of professional frontend development experience, primarily with Angular, including a leading role in component/module architecture and state management strategy design.Practical experience with modern Angular (version 16 or later), including Standalone Components, Angular Signals, and signal-based state management such as NgRx Signal Store or similar solutions. One reference required.Practical experience with AI-assisted agentic software development (not just code completion) using tools such as Kiro, Claude Code, Cursor, or comparable tools. One reference required.Experience integrating REST and GraphQL APIs into Angular frontend applications. Two references required.Experience independently designing user interfaces, including complete screens and interaction flows in Figma (or similar tools) based on an existing design system, followed by Angular implementation. Two references required. Desired Requirements Experience with WebGL-based geospatial and map visualization of large dynamic datasets, including editing map objects using Deck.gl, MapLibre, Three.js, or similar technologies.Experience displaying large datasets using charting libraries such as Plotly.js, D3, ECharts, or similar tools, especially for time series and interactive dashboards.Experience developing complex editor and form interfaces, including dynamic forms, validation, dirty-state handling, undo functionality, and conflict handling in concurrent editing scenarios.Experience with high-performance table/grid components such as AG Grid Community, AG Grid Enterprise, or similar solutions, including virtualization, server-side data models, and custom cell renderers.Experience with test-driven frontend development, including Unit Testing with Vitest/Jest and E2E testing with Playwright or comparable tools.Experience implementing user interfaces based on design systems in Figma, including design tokens, variables, and design-to-code integration solutions such as Figma Code Connect.