.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 …