Full-Stack Developer Angular / Python / AWS Remote and Frankfurt am Main

Project overview

We are currently looking for support for one of our major clients who meets the following requirements:

Responsibilities

• Further development and maintenance of an Angular 22 web application with Standalone Components and signal-based state management
• Implementation of data-driven analysis views (time series, maps, tables, timetable images) based on a generic KPI framework with GraphQL connection
• Further development of WebGL-based map visualization (Deck.gl) for infrastructure and train movement data
• Development of editor interfaces for timetable, infrastructure, and model parameters, as well as other structured data objects
• Development and maintenance of reusable UI components based on a company-wide design system
• Connection and maintenance of REST and GraphQL interfaces, as well as Protobuf-based data communication
• Reduction of technical debt and migration (e.g., Leaflet ? Deck.gl), increasing test coverage
• Conception and execution of automated quality assurance measures (unit tests, E2E tests)
• Development and maintenance of Python web APIs (FastAPI, Pydantic, SQLAlchemy) and participation in serverless data pipelines (AWS Lambda, AWS Batch, S3, Glue) and database schema migrations

Requirements

Framework parameters:

Your GECO contact person looks forward to hearing from you and receiving your meaningful project history as well as your fee/salary/price expectations.

• More than 5 years of experience in Angular development: professional frontend development, primarily with Angular, including a leading role in module and component interfaces and state management strategy
• More than 5 years of experience in the architectural further development of grown applications across frontend and backend: module and component interfaces, dependency directions and layer boundaries, as well as resolution of existing architectural violations
• Practical experience with agentic, AI-supported software development (agent mode, not just code autocompletion) with tools like Kiro, Claude Code, Cursor, OpenCode (Proof: 2 references)
• Experience in developing productive Python web APIs with FastAPI and Pydantic, as well as relational data management with SQLAlchemy including schema migrations (Proof: 2 references)
• Experience in developing and implementing algorithms for railway freight transport planning (Proof: 1 reference)
• Experience with WebGL-based map and geodata visualization of large, dynamic datasets, as well as interactive editing of map objects (e.g., Deck.gl, MapLibre, Three.js) (Proof: 2 references)
• Experience with complex, performant table representations of large datasets using AG Grid (Proof: 2 references)
• Experience in developing complex, interactive editor and form interfaces for structured data objects (dynamic forms, validation, dirty/undo handling, conflict resolution during simultaneous editing) (Proof: 2 references)
• Experience with performant display of large datasets using Plotly.js, especially time series and interactive charts (Proof: 2 references)
• Proven depth in developing productive Python web services with FastAPI: authentication and role/permission-based authorization (OIDC/JWT, API keys), versioned schema migrations on a running relational database (Proof: 2 references)
• Experience in implementing UI based on a design system with Figma, including working with design tokens/variables and integrating design and code (e.g., Figma Code Connect) (Proof: 1 reference)
• Location: Remote and by arrangement in Frankfurt am Main
• Duration: 01.01.2027
• 31.12.2027
• Utilization: Full utilization

Project details

• Start: flexible
• Remote: remote
• Location: Frankfurt am Main, Deutschland, DE
• Languages: German