.NET Developer

Engineering & Development
|
Middle
Middle
Colombia
El Salvador
Brazil
|
Colombia
El Salvador
Brazil
|
Remote
open
October 10, 2025

About the company

First Line Software works with some of the worlds top businesses and organisations in industries like healthcare, real estate, data engineering, warehouse automation, retail digitalisation, mobile app development, and e-commerce. Our projects are as varied as our people, and our people are as talented as they come.

We prefer working as a transparent and supportive team, who shares our knowledge as well as our success.

Lets see what we can create together!

‍

The project and your role

We are seeking a versatile and proactive .NET Developer to join our team, focusing on high-impact projects within complex, mission critical enterprise systems.

You will primarily contribute to two critical software initiatives:

  1. Legacy Automation Platform: Maintenance and extension of a high volume document workflow system running on .NET Framework 4.8, built on a COTS solution.
  2. Modern Forms Portal: Greenfield CRUD web application development running on .NET 8 for managing a large, user friendly system of enterprise forms.

The ideal candidate will balance supporting the immediate needs of the legacy system with driving the forward development of the modern application.

Key Responsibilities

  • Lead the development and maintenance of the Modern Forms Management Portal backend (.NET 8).
  • Actively participate in the planning, design, and initial stages of upcoming .NET projects.
  • Contribute to the implementation of new features and provide essential support for the legacy document automation platform.
  • Collaborate with cross-functional teams to define requirements, estimate tasks, and ensure timely delivery.
  • Optional: Support and extend the development infrastructure within Azure environments.
  • Optional: Development and maintenance of the existing Angular frontend, as well as development of the frontend for upcoming .NET projects.

‍

Your skills

Essential Qualifications:

  • Proven experience in building and maintaining modern C# applications, specifically .NET 8.
  • Strong expertise in database development, querying, and schema design using SQL Server & EF (Entity Framework).
  • Proficiency in version control and collaborative development workflows using Git.

Desired Skills & Knowledge (Nice to Have):

  • Experience with .NET Framework 4.8, ASP.NET MVC, ASPX, and troubleshooting older systems (Legacy .NET).
  • Hands-on experience with Angular, JavaScript (JS), and jQuery (Frontend Technologies).
  • Familiarity with Azure cloud services and IIS web server configuration/management (DevOps & Infrastructure).

‍

What we can offer

The FLS difference

  • Our modern stack projects are the right mix of exciting and challenging
  • Gain access to our diverse range of training programs, courses, and certifications;
  • Choose your work style - remote, on-site or hybrid in one of our stunning offices. We offer the freedom of flexible working hours.
  • Enhance your language skills with our corporate English classes
  • Work from anywhere and explore the world with our Workation program
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Our Hiring Process

Getting started with us

Here's what you can expect when you send us your application

Step 0

Tech Talent Hunt

Be scouted or apply for your role

Step 1

Meeting & Connecting

Our first step to building lasting relationships

Step 2

Uncovering Potential

Your HR interview

Step 3

The Code Challenge or Technical Interview

It's time to show what you can do best!

Step 4

Client’s Interview

Demonstrating expertise to our future partners

Final

The Last Piece of the Puzzle

Job offer to finalize our tech team

Join our team of innovative thinkers

Apply now!

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First Line Software, 2025

Let’s talk!

Have any questions? Fill out the form and our team will be in touch!
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