{"@context":"https://schema.org/","@type":"JobPosting","title":".NET Fullstack Developer

This is not a typical developer role. You'll be working across both technology and business operations, giving you a unique opportunity to understand how a fintech company is built from the ground up.

You'll be responsible for:

• Building and maintaining fullstack applications
• Developing APIs and working with databases
• Contributing to frontend and backend development
• Supporting AI-driven features and data workflows
• Debugging, testing, and improving system performance
• Working closely with the business to help automate operational processes

TECH STACK

• .NET (backend)
• React (frontend)
• MySQL
• AWS
• Python (AI and data models)

• Around 2+ years of experience in software development
• Experience across frontend and backend development (.NET / React) - Angular / Vue is fine
• Good understanding of software engineering fundamentals
• Interested in working in a startup / Have startup experience
• AWS exposure (similar cloud is fine)
• Interested in AI

Why Join?

• Join a startup at launch stage
• Work on AI-driven fintech products
• Gain exposure beyond coding into real business operations
• Fast-track your development with hands-on experience
• High visibility and real impact from day one

Salary is up to £50,000 and you will be required on-site 4 days per week in Central London.

Avanti is working with an exciting early-stage fintech startup based in London that is about to launch its first product in the embedded finance space. Their platform helps businesses unlock working capital through intelligent, AI-driven invoice financing solutions, integrated directly into existing financial workflows. With launch just around the corner, they are now looking for a Mid-Level Fullstack Developer to join their growing team.