.Net Developer

Engineering & Development
|
Senior
Senior
Brazil
Colombia
|
Brazil
Colombia
open
July 18, 2025

About the company

At First Line Software, we build custom software solutions that help global businesses grow, innovate, and stay ahead of the curve. With a team of experienced professionals and a focus on quality and collaboration, we work across industries to turn complex challenges into powerful, scalable applications.

The project and your role

We're looking for a Senior .NET Developer to join our team and contribute to the design and development of scalable, cloud-based backend solutions. In this role, you'll work with a modern tech stack to build and maintain APIs and services that power web applications. You'll be part of a collaborative environment that values clean architecture, performance, and maintainability. This role requires strong Azure experience and solid backend engineering skills, with an emphasis on C# and .NET technologies.

Responsibilities

  • Design, develop, and maintain robust Web APIs using .NET technologies
  • Build scalable backend services within a cloud-native architecture
  • Collaborate with frontend developers and DevOps engineers to deliver end-to-end solutions
  • Optimize application performance and database queries
  • Ensure code quality through testing, code reviews, and clean architecture principles
  • Contribute to CI/CD workflows and participate in deployment processes
  • Document APIs using OpenAPI/Swagger standards
  • Monitor, debug, and improve system performance and reliability

Your skills

  • Strong experience with C#, .NET Core / Framework, Entity Framework, and LINQ
  • Proficient in Web API development and RESTful services
  • Solid knowledge of T-SQL and relational database design
  • Experience with Azure services.
  • Familiar with Swagger / OpenAPI for API documentation
  • Skilled in Git version control and CI/CD processes using Azure DevOps or GitHub Actions
  • Hands-on experience with Docker for containerization

Nice to have:

  • .NET Aspire
  • Microsoft Fabric
  • Dapr
  • Understanding of database administration and migrations (both Code-first and DB-first)

What we can offer

  • 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
Start Application

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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

Let’s talk!

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

Let’s talk!

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