.NET / JavaScript Full Stack Software Developer

Doris Peters & Associates · San José

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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

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