.NET Dev (Start-up)

Avanti is working with an exciting early-stage 5-person 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 their launch just around the corner, they are now looking for a Mid-Level FullStack Developer to join their growing team.

THE ROLE

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. Around 70-80% of your time will be focused on development, with the other 20-30% focused on working closely with the COO to understand the operational side of the business.

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)

Experience Required

• 3+ years of experience in software development
• Strong .NET experience
• Some front-end (React ideally) – however 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

Desirable:

• Previously worked in a start-up
• Python experience (Data / 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.

If interested then click Apply Now!!