Fullstack Engineer (Fintech)

TL;DR

Fullstack Engineer (Fintech): Building and maintaining internal tools, infrastructure, and integrations for a business-critical accounting SaaS platform with an accent on .NET backend services and modern frontend components. Focus on refactoring code, optimizing system performance, and developing robust integrations to support the engineering department.

Location: Must be based in or able to work from Rotterdam, Netherlands (Hybrid)

Company

Yuki is a leading innovator in the accounting and financial administration domain, providing a business-critical SaaS solution used by over 130,000 companies and part of the Visma Group.

What you will do

• Implement new components, pages, and backend functionalities using Vue and .NET.
• Maintain a consistent workflow across the full stack, balancing frontend and backend tasks.
• Refactor and optimize existing codebases to improve execution speed and maintainability.
• Build and refine internal tools to enable other development teams to work more efficiently.
• Participate in the full application lifecycle, including debugging and resolving technical bottlenecks.
• Contribute to technical direction and security standards during faculty meetings.

Requirements

• At least 3 years of experience in .NET Technologies (VB.Net or C#).
• Experience with JavaScript frameworks such as React, Vue, or Angular and TypeScript.
• Experience with relational database engines like SQL Server.
• Experience with API development (HTTP, REST, .NET Web API).
• Solid testing experience for both frontend and backend using Jest and nUnit.
• Fluency in English is required.

Nice to have

• Knowledge of AWS.

Culture & Benefits

• Generous training budget for certifications and courses.
• 28 vacation days plus the option to buy 5 extra days.
• Workation policy allowing up to 5 weeks of remote work per year.
• Full pension coverage and competitive base salary.
• Home-office budget to set up your remote workspace.
• Access to lifestyle coaches and healthy lunches.

Hiring process

• Initial contact with the Talent Acquisition Team.
• Second interview with Development Managers.
• Technical assessment and discussion with the Principle Engineer and Software Architect.
• Final interview with the People & Culture Manager.