NTT DATA Services strives to hire exceptional, innovative, and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now. We are currently seeking a .Net Developer to join our team in Heredia, Costa Rica. *NOTE* If you are open to Remote/ Work from Home please just indicate only the Country. .Net Developer We are seeking a highly skilled Senior Software Developer with 10+ Yrs. Of deep expertise in .NET, C#,VB,.NET to lead the design, modernization, and integration of our Manufacturing Execution System (MES). Position overview Candidate will act as the crucial bridge between Information Technology (IT) and Operational Technology (OT), building scalable solutions that connect shop-floor machinery with enterprise systems like SAP, Oracle, or custom ERPs. Position's General Duties and Tasks: MES Development & Modernization: Architect and build advanced MES modules using C# and .NET. Safely modernize and migrate legacy, factory-critical VB.NET and ASP applications into modern .NET frameworks. System Integration: Design robust integration layers connecting the MES layer with ERP (SAP/Oracle), SCADA, PLCs, and WMS (Warehouse Management Systems) using APIs and Web Services. OT/IT Convergence: Develop software that interacts with hardware controls, machine interfaces, and OPC servers to automate real-time data collection on the factory floor. Database & Reporting: Architect and optimize complex T-SQL queries, stored procedures, and triggers using MS SQL Server and/or Oracle databases to ensure high data integrity. Technical Leadership & Mentorship: Act as the technical lead on MES projects, reviewing code, writing technical specifications, and mentoring junior developers on engineering best practices. Support & Maintenance: Provide tier-3, on-call support for critical production issues, minimizing equipment downtime and ensuring 24/7 system reliability.

Qualifications

Must have Skills: Core Languages: 7+ years of professional object-oriented programming experience heavily focused on C# and VB.NET. Manufacturing/MES Expertise: 5+ years of experience working in discrete or continuous manufacturing environments. Deep understanding of MES workflows, batch processing, and industry standards. Database Skills: Expert-level capability with MS SQL Server, SSIS, SSRS, and/or Oracle databases. Integration Experience: Hands-on experience with OPC DA/UA, REST/SOAP APIs, message queues (MSMQ), and connecting MES platforms to ERP systems. Tools & Platforms: Experience with Visual Studio, Git, and Azure DevOps for CI/CD environments. Education Requirements Bachelor’s degree in Computer Science, Software Engineering, or a related Engineering discipline. About NTT DATA Services NTT DATA Services is a global business and IT services provider specializing in digital, cloud and automation across a comprehensive portfolio of consulting, applications, infrastructure and business process services. We are part of the NTT family of companies, a partner to 85 % of the Fortune 100. NTT DATA Services is an equal opportunity employer and will consider all qualified applicants for employment without regard to race, gender, disability, age, veteran-status, sexual orientation, gender identity, or any other class protected by law. To learn more, please visit https://us.nttdata.com/en/about-us/content/diversity-and-inclusion. Furthermore, NTT DATA Services will make accommodations for eligible applicants on a case-by-case basis. Please email [email protected] for assistance.