Full-Stack Developer (.NET / Vue.js) – Crypto Trading Platform to $4500

We build a modern fintech platform integrating with international payment providers.

The system processes real financial transactions and includes:

.NET 10 backend services

ASP.NET Core APIs

Real-time updates via SignalR

MS SQL data layer

Razor / Blazor UI

Vue.js components

Azure-based infrastructure

We continuously upgrade the stack and avoid legacy technologies.

What you will do

Develop backend services using C# and .NET 10

Design and implement REST integrations with payment providers

Handle webhooks, callbacks, and signature validation

Implement retry, idempotency, and error-handling strategies

Work with MS SQL (query optimization, indexing)

Develop UI using Razor / Blazor and Vue.js

Implement real-time features with SignalR

Contribute to architectural and performance improvements

Requirements

Must have

Strong C# knowledge

Experience with modern .NET (Core / 6+; .NET 8+ preferred)

Solid REST API design experience

Experience with MS SQL

Experience with Razor or Blazor

Experience with Vue.js

Understanding of authentication (JWT, OAuth) and API security

English — Intermediate+

Nice to have

Experience with .NET 9/10

Azure experience

Docker

Experience with fintech or payment integrations

Experience with distributed systems