Principal Specialist, MES Developer - Manufacturing Operations

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At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. 

Pratt & Whitney is a world leader in the design, manufacture and service of aircraft engines and auxiliary power systems and has been revolutionizing modern flight for over 100 years. Join us and help shape the future of aerospace and defense.

Pratt & Whitney, a Raytheon Technologies Company, is looking for an MES developer to join our Digital Technology (DT) Digital Manufacturing Applications team. This individual will be involved in the delivery of developing, enhancing, and implementing software solutions within Pratt & Whitney’s enterprise Manufacturing Execution System (MES) solutions, as well as integrations with other enterprise products for our internal Operations customers. This role will support the development of back-end and web-based solutions, troubleshooting of problems related to PW’s MES, resolving systems integration and compatibility issues, and supporting the application life cycle Center of Excellence.

The position will be hybrid due to customer locations in different time zones, customer meetings can occur outside normal business work hours.  

What You will Do:

• Actively contribute to the design and implementation of scalable backend services and APIs using C# and .NET 6/8
• Facilitate end-to-end software delivery: requirements analysis, architecture, coding, testing, and deployment
• Enforce coding standards as per guidelines, design patterns, and architectural guidelines for the engineering team
• Conduct thorough code reviews and provide constructive technical feedback
• Work closely with Manufacturing, Engineering, and IT stakeholders to gather requirements and translate them into scalable solutions.
• Develop workflows, forms, UI customizations, and interfaces using pre-defined development framework and tools.
• Support integrations with ERP, PLM, and shop floor systems (e.g., SAP, Teamcenter, IoT devices) via APIs & web services.
• Troubleshoot and resolve complex issues within MES application.
• Participate in sprint reviews, and continuous improvement initiatives.
• Ensure proper documentation of system design, code, and configurations.

Educational Qualifications:

• Bachelor's degree (or higher) in Computer Science, Software Engineering, Information Systems, or a related technical field with 7+ years in software development with C# and the .NET ecosystem (.NET Core / .NET 5+) or Masters degree in Computer Science, Software Engineering, Information Systems, or a related technical field with 5+ years of technical experience.
• Deep understanding of object-oriented design, SOLID principles, and common enterprise design patterns (CQRS, Repository, Factory)
• Proficiency with ASP.NET Core Web API, Entity Framework Core, and async/await concurrency patterns
• Strong experience with relational databases (SQL Server, PostgreSQL) including query optimization and schema design
• Hands-on experience with RESTful API design, OpenAPI/Swagger documentation, and service-to-service authentication (OAuth2, JWT)
• Solid working knowledge of Git-based workflows, branching strategies, and pull-request-driven development
• Familiarity with containerization using Docker and orchestration basics (Kubernetes or Azure Container Apps)
• Experience integrating MES with ERP and/or PLM systems.
• Ability to work independently in an agile development environment.
• Good communication, analytical, and organizational skills

Qualifications We Prefer:

• Experience in Siemens Opcenter Execution (MES) or Opcenter APS modules with enterprise systems (ERP, SCADA, PLM)
• Development of custom Opcenter workflows, business rules, and service extensions using the Opcenter SDK and REST/SOAP APIs
• Development of custom Java actions, REST/OData integrations, and reusable modules within the Mendix platform
• Design and maintain integration layers (REST, OData, message queues) connecting MES, ERP (SAP), and IoT data sources
• Familiarity with CI/CD pipelines (Azure DevOps / GitHub Actions) for both .NET and Mendix deployments

Daycare for young children
Advancement programs to enhance education skills
Flexible work schedules
Leadership and training programs
Comprehensive benefits, savings, and pension plans
Financial support for parental leave
Reward programs for outstanding work

Role type:

Please ensure the role type (defined below) is appropriate for your needs before applying to this role.

Hybrid: Employees who are working in Hybrid roles will work regularly both onsite and offsite. Ratio of time working onsite will be determined in partnership with your leader.

Employment Type:

• Full-time

• This position requires flexibility to support outside the regular office hours as per the need basis

Video Links:

Pratt & Whitney - YouTube

RTX adheres to the principles of equal employment. All qualified applications will be given careful consideration without regard to ethnicity, color, religion, gender, sexual orientation or identity, national origin, age, disability, protected veteran status or any other characteristic protected by law.  

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