Sr .NET Developer – Part time Contractor

Region: LATAM, EMEA, APAC, and US

Country: Costa Rica

Type: Fully remote

What's the Project?

Newfire Global Partners is a leading technology firm that specializes in building transformative software solutions for some of the world’s most innovative companies. With a presence across four continents, Newfire Global brings deep expertise in digital healthcare, AI-driven analytics, and enterprise technology. The firm’s track record of delivering scalable, high-impact solutions has made it a trusted partner for organizations seeking to drive meaningful change through technology.

We are passionate about the purpose-driven mission to help improve the quality of care for patients and are building a collaborative, innovative, and inclusive culture. We are a fully funded company founded by serial entrepreneurs with a stable client base.

Opportunity for impact

Newfire Global Partners, a leader in developing disruptive healthcare technology, collaborates with Fortune 500 companies and start-ups to drive transformation.

Newfire is seeking a Senior .NET developer

What's the Project?
Newfire Global Partners is a leading technology services firm with a global presence across four continents. We build transformative software solutions for innovative companies, with deep expertise in digital healthcare, AI-driven analytics, and enterprise technology. Founded by serial entrepreneurs and fully funded, we have a strong track record and a stable client base. Our purpose-driven mission is to improve the quality of care for patients, supported by a collaborative, inclusive culture.

Your day-to-day activities:

Design, develop, and maintain .NET-based applications
Write clean, efficient, and maintainable code
Collaborate with cross-functional teams to define technical requirements
Troubleshoot and optimize applications for performance and scalability
Mentor junior developers and ensure code quality through reviews
Participate in planning, deployment, and CI/CD processes

Key Responsibilities

7+ years of experience with .NET Framework and .NET Core
Strong knowledge of C#, ASP.NET, MVC, and Web API development
Experience with SQL Server and other relational databases
Familiarity with front-end technologies like Angular, React, or Blazor is a plus
Solid understanding of OOP, design patterns, and software best practices
Excellent communication and problem-solving skills
Experience with cloud services (Azure or AWS) and microservices is a plus

Ready to dive in?

Alejandro Rodriguez
Recruiter

Mexico/General

alejandro.rodriguez@newfireglobal.com

Hiring Process

Here's what you can expect during our hiring process.

Stage 1

Applied

Stage 2

Interview

Stage 3

Background Check

Stage 4

Hired

1 of X

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How many years of experience do you have in roles similar to the one you are applying for? *
Please specify only the years of experience relevant to similar positions, not your total professional experience. What is your English proficiency level? *
At Newfire, we only hire professionals who can communicate clearly and effectively with native English speakers in meetings, emails, and chat. Your English skills will be assessed during the initial interview.Basic (A1–A2) – Can understand and use some familiar words and very basic phrases. Very limited ability to communicate. Intermediate (B1) – Can deal with some daily situations. Limited ability to communicate in English. Advanced (B2–C1) – Can interact with a degree of fluency and spontaneity in a professional environment. Able to produce clear, well-structured language on complex subjects. Fluent / Native (C2) – Can express themselves effortlessly in all types of communication, including nuanced and abstract language. Comparable to native-level proficiency.

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