Sr Software Developer (Strong Exp w/ C# & ASP.NET)

The driving force behind our success has always been the people of AspenTech. What drives us, is our aspiration, our desire and ambition to keep pushing the envelope, overcoming any hurdle, challenging the status quo to continually find a better way. You will experience these qualities of passion, pride and aspiration in many ways - from a rich set of career development programs to support of community service projects to social events that foster fun and relationship building across our global community.

• Provide technical leadership for web application and web services development initiatives.
• Design, develop, maintain, and support new and existing software applications throughout the product lifecycle.
• Lead and contribute to technical and functional design sessions (Architecture, API design, Data modeling, and implementation planning).
• Build and maintain web services / APIs (e.g., REST) with focus on performance, scalability, security, and maintainability.
• Provide creative solutions to complex technical challenges and production issues.
• Participate in the maintenance, refactoring, and enhancement of existing codebases to improve quality and reduce technical debt.
• Provide technical support to Product Management, Product Marketing, Services, and Customer Support on customer activities (troubleshooting, technical guidance, root-cause analysis).
• Promote strong engineering practices including code reviews, testing, documentation, and CI/CD-ready delivery.

• BS in Computer Science (or equivalent experience).
• 5-8 years of professional software development experience with strong proficiency in C#.
• Experience in one or more of the following technologies:
• NET, ASP.NET, ASP.NET MVC
• Web API2, web services, and service-oriented architectures
• HTML5, TypeScript, JavaScript
• SQL Server
• Excellent interpersonal, communication, writing, and presentation skills.
• Demonstrated ability to convey complex information clearly and concisely to both technical and non-technical audiences.
• English fluency (written and verbal) required.

Preferred Qualifications

• Experience building software that supports engineering, scientific, or simulation workflows.
• Familiarity with simulation concepts, numerical methods, or computational workflows.
• Experience modernizing or evolving legacy systems (refactoring, test automation, performance tuning, improved observability).

AspenTech will only employ those who are legally authorized to work in the United States. This is not a position for which sponsorship will be provided. Individuals with temporary visas such as E, F-1(including those with OPT or CPT) , H-1, H-2, L-1, B, J or TN, or who need sponsorship for work authorization now or in the future, are not eligible for hire.

#LI-WJ1