**Job Title:** Senior .NET Developer with React (LATAM, Native English Required)
**Company:** AstroSirens, USA
**Location:** Remote – LATAM Region (US Timezone Working Hours)
**Type:** Full-time, Long-term Contract
**Pay:** $2,500 – $3,500 USD/month (depending on experience)
**Contact:** ezhang@astrosirens.com
AstroSirens is a US-based IT consulting and staffing firm that connects top engineering talent from Latin America with innovative companies in the United States. We specialize in remote placements for long-term software development roles. Our clients range from early-stage startups to large-scale enterprise tech companies. We focus on building distributed teams that thrive in highly collaborative environments.
We are looking for a **Senior .NET Developer with React experience** to join one of our US-based client projects. This is a **full-time, remote** role open to candidates based in the **LATAM region** who can work during **US business hours**. You will be working on a product development team focused on building scalable, user-friendly applications.
> ⚠️ **Note**: Native or near-native English communication skills are **mandatory** for this position. Daily interaction with US clients is required.
* Design and build backend services using **ASP.NET Core** or **MVC**
* Develop frontend components using **React.js**
* Integrate APIs and work with relational databases like **SQL Server**
* Write clean, scalable, and secure code
* Collaborate with cross-functional teams across time zones
* Participate in code reviews, sprint planning, and architecture discussions
* Ensure high-quality delivery through testing and documentation
* **7+ years** of professional experience with **.NET development**
* Strong proficiency in **C#**, **ASP.NET MVC/Core**
* Production-level experience with **React.js**, JavaScript/TypeScript
* Experience working with **Azure**, **Git**, and **CI/CD pipelines**
* Understanding of **RESTful APIs**, database design, and ORM frameworks
* **Fluent English (native or near-native)** — both written and spoken
* Comfortable working independently and proactively in remote teams
* Applicants must be located in **Latin America (LATAM)**
* Must be available to work during **standard US business hours** (9 AM – 5 PM EST/PST depending on the team)
* **Long-term** (12+ months)
* Full-time (40 hours/week)
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