Senior Software Engineer

Haystack People
Amsterdam, Netherlands
10 days ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Experience required
3 years minimum
Working hours
Regular working hours
Languages
Dutch, English
Job source

Tech stack

Application Programming Interfaces (APIs) Artificial Intelligence Software as a Service Continuous Integration Github Python (Programming Language) Redis WebSocket Workflow Management Systems Flask (Web Framework) Large Language Models Backend
+5 more
Fastapi Front End Software Development Restful APIs Automation Anywhere Docker

Job description

Build the backend of a fast-growing VC-backed SaaS platform. As a Python Backend Developer, you’ll design scalable APIs, integrate LLM workflows, and power real-time infrastructure - all in a lean, product-focused engineering team. Bedrijfsprofiel 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 -

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 Terms of Employment -

Benefits & conditions

Monthly salary: €5500 - €9000 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) - Dail…

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