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Senior Full Stack Engineer (AI/Backend Focus) – Bonafi B.V.

bonafi • Netherlands
Visa Sponsorship
This Job is No Longer Active This position is no longer accepting applications
AI Summary

Join Bonafi to build the operating system for modern family offices by developing AI-driven financial infrastructure. You’ll design backend systems, document extraction pipelines, and integrate financial platforms while collaborating cross-functionally to solve real-world customer problems. Requires 3+ years of production experience with Python, TypeScript, and LLM-based systems.

Key Highlights
Build AI/ML-powered financial infrastructure for wealth management, including document extraction and structured data modeling.
Work on a high-growth startup with a focus on backend, AI systems, and financial integrations (banks, custodians, etc.).
On-site, full-time role in Rotterdam with competitive salary (€48K–€66K annual), equity, and benefits.

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Key Responsibilities
Develop document extraction pipelines to convert unstructured financial reports into structured data.
Design and implement backend infrastructure for AI systems, including tool routing, guardrails, and human-in-the-loop workflows.
Integrate financial systems (banks, custodians, accounting software) with Bonafi’s platform.
Collaborate cross-functionally to solve customer problems, from problem definition to technical implementation.
Build and optimize frontend components in TypeScript/React/Next.js when needed.
Technical Skills Required
Python TypeScript SQL

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Benefits & Perks
€4,000–€5,500 gross monthly salary (€48K–€66K annual)
0.3%–0.6% equity (vesting: 25% after 1 year, remainder over 3 years)
24 paid holidays (excluding Dutch public holidays)
MacBook Pro for work
Gym membership and Swapfiets (Dutch bike-sharing)
Dinner at the office when working late

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Nice to Have
Experience with financial software, Dutch tax/accounting, or wealth management.
Knowledge of LLM-based systems (retrieval, agent workflows, structured extraction).

Job Description

Full Stack Engineer

Bonafi B.V. · Rotterdam · Full-time, on-site · Start 01/11

Before you apply

  • You need to already live in the Netherlands and have the right to work here.
  • We cannot offer relocation but can offer visa sponsorship for this role
  • We work from our office in Rotterdam five days a week. This is not a remote or hybrid position.
  • We are in an intense stage of the company. The contract is for 40 hours per week, but in practice the team currently works considerably more at times, including some evenings and occasional weekends. We prefer to be transparent about that upfront, so you know what the current reality looks like.

About Bonafi

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Job Overview
Posted Sep 17, 2026
Employment Full-time
Experience Entry level
Location Netherlands
Category Programming
Company bonafi
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