Backend Developer (Python / FastAPI) Tech
Backend developer at Aizy building their ad-management SaaS platform end-to-end, from database to screen: integrations with Google Ads, Meta, and TikTok, dashboards, and AI-driven automations. Backend in Python/FastAPI/PostgreSQL, frontend in TypeScript/SvelteKit, working from the office in Breda.
- Compensation
- Not disclosed
- Location
- Netherlands
- Work setup
- Not specified
- Seniority
- Not specified
- Employment
- Not specified
- Experience
- Not specified
- Category
- Backend
- Posted
Skills
Must have
- Experience independently building and maintaining web applications
- Solid foundation in Python and experience with FastAPI or a similar framework
- Can work with TypeScript and a modern frontend framework
- Understands databases and can figure out why a query is slow
- Takes authorization, customer data, and impact of changes into account
- Embraces AI as part of your craft and actively works with AI tools
- Enjoys working with colleagues in the office in Breda
- Speaks and understands Dutch well enough for meetings, technical discussions, and casual conversation
Nice to have
- No need to already know the entire stack; they care about what you've built and learned
Full description
Backend Developer (Python / FastAPI)
Location
Breda
Hours
40
Team
Tech
At Aizy, we build software that helps agencies and webshops manage their online advertising. Our platform collects campaign results, makes recommendations using AI, and can automatically execute changes in ad accounts.
We're looking for a developer who can build features independently, from database to screen. Someone who enjoys thinking along about the product and likes figuring out, together with a growing team, how things can be done better.
What you'll be doing
You’ll work on our own SaaS platform, with integrations to Google Ads, Meta, TikTok, ChatGPT, and more. For example, you’ll build an automation that adjusts ad budgets based on results, including the basic screen where the customer sets conditions and can see what’s been executed.
- Build integrations with advertising platforms and process campaign data.
- Develop dashboards that let customers track their spend, conversions, and ROI.
- Extend our AI assistant, which analyzes data and helps customers prepare and execute changes.
- Keep the platform reliable: from fast queries to preventing duplicate executions and properly separating customer data.
You’ll think along on the approach, build the solution, and follow how it works in practice. Because our software can adjust ad budgets, we pay a lot of attention to checks, clear confirmations, and visibility into what’s happening.
Our stack and way of working
The backend runs on Python, FastAPI, and PostgreSQL. On the frontend we work with TypeScript, SvelteKit, Tailwind, and TanStack Query. We use Docker for the development environment.
We work daily with AI agents like Claude Code and Codex. We’re looking for someone for whom AI is a natural part of development, who keeps up with what’s possible and enjoys trying out what works.
You’ll get the space and encouragement to use AI tools extensively — to test ideas faster, build features, and solve tricky problems. We want to discover together how much more productive we can become with them. You keep the overview and judge the quality of the result.
Found an approach that works well? Share it with the team. That’s how we improve our way of developing together.
What you bring
- You have experience independently building and maintaining web applications.
- You have a solid foundation in Python and have worked with FastAPI or a similar framework.