Fullstack Developer – AI Frontend & Backend

Seeking a candidate for the role of Fullstack Developer – AI Frontend & Backend.

Grade: Senior Start: ASAP / as soon as possible Languages: English; German — advantage; Bulgarian or Polish — advantage.

Project: Development of an existing frontend providing access to various Large Language Models and knowledge bases. In the long term, the solution should evolve into a central AI Hub.

The project includes frontend development, integration of services and interfaces, connection of LLMs and knowledge bases, development of backend services and APIs, support of architecture and technical design, development of automated end-to-end tests, analysis of existing components, and rapid immersion into systems.

Tasks:

• Development and improvement of modern frontend components for the AI platform.
• Implementation of new features and integration of existing services and interfaces.
• Connection of various LLMs and knowledge bases.
• Development of the platform towards a central AI Hub.
• Development and integration of backend services and APIs.
• Support of architecture and technical design of solutions.
• Development and improvement of automated end-to-end tests.
• Analysis of existing components and rapid mastering of existing systems and structures.
• Close collaboration with business stakeholders and development teams.

Frontend Technology Focus:

• React
• Redux
• Zustand
• Experience with component frameworks and/or design systems
• Playwright for end-to-end testing

Backend Technology Focus:

• Python
• FastAPI
• Pydantic
• Pydantic AI
• SQLModel
• SQLAlchemy
• PostgreSQL
• Redis

Requirements:

• Several years of professional software development experience.
• Strong expertise in frontend and/or backend development.
• Ideally fullstack experience within the specified technology stack.
• Practical experience with LLMs, Generative AI, or AI platforms.
• Experience integrating APIs, databases, and external services.
• Ability to quickly understand existing applications and business context.
• Strong communication skills and ability to work independently.

Mandatory technologies/tools: React, Redux, Zustand, Playwright, Python, FastAPI, Pydantic, Pydantic AI, SQLModel, SQLAlchemy, PostgreSQL, Redis, LLM/GenAI, API, databases.

Desirable technologies/tools: Component frameworks/design systems, experience with AI platforms, German language, Bulgarian or Polish language.

Location: EU. Contact: TG recruiter contact