AFRA #72-Senior Full-Stack Developer – Angular 22 & Python / Simulation Platform (PROTON)

Project overview

Senior Full-Stack Developer – Angular 22 & Python / Simulation Platform (PROTON)

Responsibilities

Must-Have Criteria

• Frontend (Angular 22): Further development and maintenance of modern web UIs with Standalone Components, signal-based state management, and an internal design system component library.
• Geospatial Data & Visualization: Further development of high-performance WebGL map visualizations (Deck.gl, Three.js) for infrastructure and train movements, as well as migration of existing Leaflet components.
• Backend & APIs (Python): Development and maintenance of robust REST services (FastAPI, Pydantic, SQLAlchemy, PostgreSQL/Alembic) and extension of GraphQL APIs (Ariadne) for big data queries via AWS Athena / Parquet.
• Data Pipelines & E2E Delivery: Further development of serverless AWS pipelines (Lambda, Batch, S3, Glue) for ETL and simulation runs; holistic feature implementation in "1 Merge Request per End-to-End Feature" mode.
• Architecture & Quality: Reduction of technical debt, consistent layered architecture, module interfaces, and automated QA (unit & E2E tests).
• > 5 years of senior experience in Angular: Excellent knowledge of modern Angular concepts (Signals, Standalone Components, State Management, Architecture & Component Interfaces).
• > 5 years of senior experience in Full-Stack Architecture: Refactoring and architectural evolution of established systems across frontend and backend (layers, dependencies).
• Python Web APIs: Demonstrable experience with FastAPI, Pydantic, SQLAlchemy, and relational DB migrations (min. 2 project references).
• Domain Know-how: Experience in the conception or implementation of algorithms / planning models in rail transport / rail freight transport (min. 1 reference).
• Agentic AI Coding: Practical experience in AI-assisted development in agent mode (e.g., via Claude Code, Cursor, Kiro, OpenCode; min. 2 references).

Requirements

I look forward to your feedback:

• WebGL-based geospatial data visualization of dynamic data via Deck.gl, MapLibre, or Three.js (incl. interactive geometry editing).
• High-performance rendering of large tabular data with AG Grid and charts with Plotly.js.
• Complex UI editors/forms (dirty/undo handling, conflict management).
• AWS Serverless Stack (Lambda, Batch, S3, Athena/Glue).
• UI integration via Figma / Design Tokens (Figma Code Connect).

Project details

The Project

PROTON simulates real railway operations microscopically and network-wide (minute-accurate train runs, dispatching, travel time calculations, disruption and construction site modeling) over periods of up to entire operational years. As a DevOps-oriented full-stack specialist, you will be responsible for features holistically across frontend, backend APIs, and serverless data pipelines.

• Project Start: Immediately / Q4 2026 (latest 01.01.2027)
• Duration: until 31.12.2027 (long-term project)
• Location: Remote (occasional coordination as needed)
• Hourly Rate / Daily Rate (Net): €600 – €700 / day all-in
• Application Deadline (Hard Deadline): 03.11.2026 (Client Submission: 05.11.2026)
• Start: ab sofort
• Duration: 12 Monate
• Remote: hybrid
• Location: Frankfurt, Deutschland, DE
• Rate: 88-88 EUR/h
• Languages: German