.NET / JavaScript Full Stack Software Developer

Our client, TwinEngines, is seeking a Full Stack Software Developers to join their Costa Rica engineering team.

This role is ideal for a developer who enjoys building modern, cloud-connected applications that integrate ERP, CRM, AI, shop-floor tools, and mobile platforms to support real-world business operations in manufacturing, distribution, and industrial environments.

The developer will play a key role in designing, building, and maintaining applications that support mission-critical processes. This includes web, mobile, and desktop development; cloud integrations; and participation in solution architecture alongside engineering teams in Costa Rica and the U.S.

Key Responsibilities

• – Develop Windows, Web, and Mobile (.NET MAUI) applications connected to Azure cloud and AI services.

• – Build features for portals, shop-floor systems, collaboration tools, and mobile modules.

• – Participate in architecture sessions to map systems, processes, and data flows that bridge ERP gaps.

• – Implement AI capabilities such as computer vision, OCR, natural language processing, and predictive analytics.

• – Create custom dashboards and Power BI analytics for data-driven decision-making.

• – Integrate solutions with Office 365, ERP systems, SharePoint, Teams, OneDrive, CRM tools, and third-party applications.

• – Collaborate with cross-border engineering teams to deliver performant, reliable, and maintainable software.

• – Support continuous improvement through Lean Agile practices.

• What the Role Offers

• – Competitive salary and benefits package.

• – Ongoing professional development and certification opportunities.

• – A collaborative, innovation-driven culture.

• – Growth opportunities within a hybrid U.S.–Costa Rica engineering structure.

• – Occasional travel to the headquarters in Atlanta.

• – A chance to contribute to cutting-edge industrial digital transformation solutions.

Requirements

• Required Skills and Experience

• Programming and Development

• C#

• ASP.NET

• SQL Server

• JavaScript (ES6+)

• Front-End / Web Skills

• DOM manipulation

• Asynchronous programming (Promises, async/await)

• Tools & Engineering Practices

• Microsoft Visual Studio

• Git

• Modern SDLC practices

• Architecture & Systems

• Cloud architecture fundamentals

• API-driven systems

Education

• Bachelor’s degree in Software Engineering, Computer Science, or related field

• Language

• Intermediate English (spoken and written)

• Soft Skills / Work Style

• Collaboration

• Self-directed work

• High accountability / ownership mindset

• Preferred Skills (Nice to Have)

• .NET / Web Frameworks

• ASP.NET MVC

• ASP.NET Web API

• RESTful services

• Front-End Frameworks

• Angular

• React

• Vue

• Microsoft Azure Cloud

• Azure App Services

• Azure Functions

• Azure AI Services

• Azure Storage

• Azure SQL

• Mobile Development

• .NET MAUI

• AI / Data Science

• AI/ML workflows

• Computer vision

• Document intelligence

• Predictive models

• Analytics & Reporting

• Power BI

• Data warehousing

• Operational reporting

• Business Systems

• ERP integrations

• Manufacturing systems understanding

• Microsoft Productivity & Automation

• Office 365

• SharePoint

• Workflow automation

• Certifications

• Microsoft developer certifications