Amsterdam
Permanent
80k, 85k, 90k, 100k
FastAPI, Flask, Docker, Python, CI / CD

Senior Software Engineer (Python) – Build Scalable AI Platforms

Company profile

Our client is a VC-backed SaaS scale-up based in the Netherlands. Their platform combines AI, automation, and workflow orchestration to support smarter decision-making across Europe.

The tech team is compact and works fully in-house, with full ownership over architecture and product direction. The engineering culture is fast, pragmatic and collaborative. Work setup is hybrid: typically 2 days per week in-office (Randstad region).

Job description

  • Build and maintain scalable backends using Python (FastAPI or Flask)

  • Design APIs that power AI workflows and modular decision logic

  • Work with Redis and WebSockets to support real-time features

  • Improve testing, performance, and system security

  • Collaborate with product, frontend and fellow engineers

  • Contribute to architecture, deployment pipelines and monitoring

Requirements

  • 5+ years of backend experience, preferably 3+ in a SaaS or product environment

  • Proficient in Python and familiar with modern API frameworks (FastAPI, Flask)

  • Hands-on experience with Redis, Docker, GitHub Actions or equivalent tools

  • Exposure to LLMs or AI integrations (or interest in working with them)

  • Broad technical knowledge across architecture, CI/CD, security and testing

  • Fluent in English; Dutch is a plus

  • Must be living in the Netherlands with valid EU work authorization

Benefits

  • Monthly salary: €5500 – €7000 gross + 8% holiday allowance

  • Equity via stock plan

  • MacBook Pro and home office setup budget

  • 25 vacation days + 2 additional personal days

  • Hybrid work model (office-first with flexibility)

  • Daily team lunch, internal bootcamps and knowledge sharing

  • Long-term role with clear growth opportunities (e.g. Lead Engineer)

Important

We can only consider candidates who currently live in the Netherlands and hold a valid EU work permit. No visa sponsorship or relocation support available.

Want to apply or explore first?

Email d.gontha@haystackpeople.nl or message us for a confidential conversation.

Keywords:

Python, Backend, FastAPI, Flask, Redis, WebSockets, Docker, GitHub, SaaS, Engineering, APIs, Automation, Realtime Systems, CI/CD, Product Development, €100K+

Senior Software Engineer (Python) – Build Scalable AI Platforms
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