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
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Build and maintain scalable backends using Python (FastAPI or Flask)
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Design APIs that power AI workflows and modular decision logic
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Work with Redis and WebSockets to support real-time features
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Improve testing, performance, and system security
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Collaborate with product, frontend and fellow engineers
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Contribute to architecture, deployment pipelines and monitoring
Requirements
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5+ years of backend experience, preferably 3+ in a SaaS or product environment
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Proficient in Python and familiar with modern API frameworks (FastAPI, Flask)
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Hands-on experience with Redis, Docker, GitHub Actions or equivalent tools
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Exposure to LLMs or AI integrations (or interest in working with them)
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Broad technical knowledge across architecture, CI/CD, security and testing
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Fluent in English; Dutch is a plus
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Must be living in the Netherlands with valid EU work authorization
Benefits
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Monthly salary: €5500 – €7000 gross + 8% holiday allowance
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Equity via stock plan
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MacBook Pro and home office setup budget
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25 vacation days + 2 additional personal days
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Hybrid work model (office-first with flexibility)
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Daily team lunch, internal bootcamps and knowledge sharing
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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+
