Senior Software Engineer

Mastech Digital is a company focused on shaping the digital manufacturing landscape, and they are seeking a MES Software Engineer. This role involves designing, developing, integrating, and supporting MES solutions to enhance shop floor operations and streamline manufacturing processes.

Responsibilities:

• Design, develop, and support MES applications using .NET, C#, ASP.NET, and Web APIs
• Configure and enhance Siemens Opcenter Execution solutions to meet evolving manufacturing and business needs
• Build and maintain integrations between MES, enterprise systems, and shop floor equipment to ensure seamless data flow and operational continuity
• Partner closely with manufacturing stakeholders, business teams, and IT colleagues to understand requirements and translate them into practical, high-quality technical solutions
• Provide technical input on solution design, implementation approach, and system improvements across MES-related initiatives
• Help drive major system changes, enhancements, and integration efforts by identifying risks, recommending solutions, and executing effectively
• Implement and support messaging technologies such as MSMQ, ActiveMQ, RabbitMQ, or similar tools to enable reliable communication across manufacturing systems
• Ensure the integrity, consistency, and reliability of data across integrated applications and platforms
• Troubleshoot complex issues in production and non-production environments, identify root causes, and implement effective long-term solutions
• Test and validate applications, integrations, and system changes to ensure performance, stability, and business readiness
• Contribute to project planning, technical estimates, and delivery schedules to support successful implementation of MES initiatives
• Create and maintain clear technical documentation and provide user support and knowledge sharing as needed
• Participate in an on-call support rotation after onboarding and training are complete

Requirements:

• Bachelor's degree in Computer Science, Information Technology, Information Systems, Engineering, or a related field
• 7+ years of experience developing software solutions using .NET, C#, and ASP.NET
• Experience building and supporting enterprise applications using RESTful APIs and modern integration patterns
• Hands-on experience with messaging technologies such as MSMQ, ActiveMQ, RabbitMQ, or similar middleware
• Strong understanding of software engineering fundamentals and the Software Development Life Cycle (SDLC)
• Experience with source control and development tools such as Git, Azure DevOps/TFS, or similar platforms
• Strong understanding of relational databases such as Oracle or SQL Server
• Experience working in or supporting systems within a 24/7 manufacturing, industrial, or operational environment
• Demonstrated ability to work independently, manage complex technical work, and contribute to large-scale system changes
• Strong analytical, problem-solving, and communication skills, with the ability to work effectively across technical and business teams
• Experience with Siemens Opcenter Execution Designer and Portal (formerly Camstar)
• Experience working with other Manufacturing Execution Systems (MES) platforms
• Experience contributing to or driving significant system implementations, upgrades, or integration initiatives
• Familiarity with TDD, CI/CD, and automated deployment practices
• Experience with CI/CD tools such as GitLab, GitHub Actions, Jenkins, or similar
• Experience working in a Scrum/Agile team environment
• Familiarity with modern developer productivity tools, including AI-assisted coding tools
• A track record of delivering solutions that are both technically sound and aligned with business needs
• The ability to adapt quickly, manage competing priorities, and thrive in a dynamic manufacturing environment