Software Developer (.NET)

SEMI SENIOR - Software Developer (.NET) - Payment Integrations Location: Chile or Argentina (remote) Level: Semi Senior Contract: 3 months, with possible extension based on performance Payment: USD About the role We are looking for a Software Developer to join a team working on a payment-focused platform. You will build new features on a modern .NET stack and maintain legacy VB.NET code. A big part of the work is integrating and supporting multiple payment gateways and making those integrations reliable with solid integration testing. What you will do - Build and maintain web applications with ASP.NET on .NET 9 or later. - Support, refactor and extend legacy C# and VB.NET code. - Design, implement and maintain integrations with several payment gateways. - Write and maintain integration tests for payment flows and external services. - Work with SQL Server 2022 on queries, stored procedures and performance tuning. What we are looking for - Commercial experience with ASP.NET on .NET 9+. - Hands-on experience with C# and legacy VB.NET codebases. - Solid skills with SQL Server, ideally the 2022 version. - Proven experience integrating more than one payment gateway. - Experience designing and running integration tests. Equipment requirements You will work on your own laptop, which needs to meet these specs: - Processor: Intel Core 7, Core Ultra or equivalent (x64 architecture) - Memory: 32 GB RAM - Operating system: Windows 11 or later - Storage: SSD with more than 50 GB free for Visual Studio and the applications What we offer - Payment in USD - A 3-month contract that can be extended based on performance Originally posted on Himalayas