Senior Fullstack Engineer | Tax Technology and Operations | Stockholm

The opportunity

We are looking for a great colleague to join our EY Tech People team as a Senior Fullstack Engineer where you will play a pivotal role in building innovative tax automation tools and AI-integrated platforms across several business-critical products. Our mission is to enhance efficiency quality and satisfaction in tax and compliance workflows serving thousands of clients with accurate and compliant tax filings.

As part of a dynamic organization operating across the Nordics (DK FI SE NO) you will collaborate with a talented group of engineers designers researchers and product managers in a flat informal structure. While experience in tax law is beneficial a passion for technology and collaboration is what we truly value.

Your key responsibilities

• Building end-to-end tax automation features from React frontends to backends
• Developing AI-integrated platforms with seamless user experiences and robust data processing
• Close collaboration with designers product managers and fellow developers as well as sparring with users and researchers to understand tax workflows in detail
• Contributing to internal tooling and developer experience including AI-assisted development workflows MCP server implementations and prompt libraries
• Working across a range of products and problem spaces in the fullstack domain
  
  

Skills and attributes for success

Frontend Expertise (Required):

• React/TypeScript: Extensive experience with modern hooks state management and performance optimization
• Modern Tooling: Experience with build tools (Vite/webpack) testing frameworks (Cypress/Playwright) and Kubernetes deployments
• Complex UI Development: Building multi-step workflows sophisticated form validation and responsive interfaces
  
  

Backend Proficiency (Required):

• : Extensive experience with Express async programming and RESTful API development
• MongoDB: Strong experience with document design aggregation pipelines and performance optimization
• Python Integration: Experience with FastAPI report generation and GenAI pipeline integration
• System Integration: Third-party API integration microservices patterns and MCP implementations

What we offer

EYs Tech People organization works as a focused tech product team driven by user needs and product impact. Youll work closely with tax professionals allowing your fullstack solutions to generate immediate feedback and real value. Youll own features endtoendfrom idea to deploymentwhile developing your skills alongside talented engineers in areas such as React best practices performance and AI integration.

Are you ready to shape your future with confidence Apply today.

Please submit your application no later than 29th of March2026. Selection and interviews are ongoing. For questions regarding the recruitment process contact Maria Thuy Truong at - Start date by agreement. Please note that a background check will be conducted as part of the recruitment process.

At EY we promote an inclusive environment and value diversity. We encourage applications from candidates with different backgrounds and strive for a fair recruitment process. If you need support or adjustments please contact us.