Full Stack Web Development Intern Jobs in Austin, TX

Who We Are

Thermon is a global industrial technology leader and the world's foremost provider of mission-critical heating solutions. From power generation and semiconductors to oil & gas and food processing, our systems keep essential industries running safely, efficiently, and reliably.

We don't just make heaters-we deliver complete, end-to-end solutions that include design, installation, controls, and monitoring. Our people and products transfer the warmth needed to make life work.

Headquartered in Austin, Texas, and operating in 18 countries, Thermon is built on the values of Care, Commit, and Collaborate. We're a team of innovators and problem-solvers, united by our mission and driven by a culture of ownership and impact.

Who We Want

We're looking for a Senior Full-Stack Software Engineer to join our R&D Platforms Team and help build Genesis, our next-generation IIoT controls and monitoring platform. Genesis provides real-time visibility into the performance of industrial heating systems, enabling smarter, safer, and more sustainable operations.

This role is ideal for someone who thrives in the backend-fluent in C#/ASP.NET Core, SQL Server, and system architecture-but who can also move up the stack to shape APIs and contribute to a modern React front-end. You'll work to deliver scalable, high-performance solutions that power critical infrastructure around the world.

You'll thrive here if you:

• Want to make a real impact on a small, empowered team.

• Enjoy building a product that solves real-world problems and improves continuously through customer feedback.

• Are energized by the challenge of integrating industrial controls hardware into a modern software platform.

• Love designing elegant systems and modeling complex data.

• Take pride in writing clean, maintainable, and performant code.

What You'll Do

• Contribute to a robust C#/ASP.NET Core codebase with architectural insight and hands-on development.

• Design and evolve scalable, performant system architecture.

• Model relational data in SQL Server, optimizing schema and queries for efficiency.

• Build and maintain RESTful APIs that expose well-structured data models.

• Implement asynchronous messaging patterns (e.g., MQTT, pub/sub) for real-time telemetry and control.

• Drive best practices through code reviews, mentorship, and continuous improvement.

• Collaborate with hardware teams to integrate legacy and modern control protocols.

• Contribute to system documentation (UML, C4) and architectural clarity.

• Develop CI/CD pipelines and automated testing systems.

What You Bring

• 5+ years of professional experience building full-stack web applications.

• Strong expertise in C#/ASP.NET Core, SQL Server, and web technologies, e.g., React.

• Solid understanding of software architecture, best practices and design patterns (MVC, repository/unit-of-work, CQRS, Domain-Driven Design).

• Experience with asynchronous/event-driven architectures (e.g., MQTT).

• Familiarity with DevOps best practices, unit testing, and agile development.

• Bachelor's degree in Computer Science, Engineering, or related field.
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• This position is not eligible for employer-sponsored work authorization now or in the future. Applicants must be legally authorized to work in the United States without requiring current or future employer sponsorship.

Bonus Points For

Experience with containerization and orchestration (Docker, Kubernetes).

Familiarity with cloud-native services and serverless patterns (Azure Functions, AWS Lambda).

Experience with front-end testing and C# testing frameworks.

Knowledge of security best practices (OAuth, LDAP).

Understanding of industrial control protocols (Modbus, CAN Bus).

Experience with microservices.

Experience with DevOps tools (e.g., Jenkins).

Why You'll Love Working at Thermon

Team Impact: Small, agile team where your contributions matter.

Global Reach: Your work will power critical infrastructure around the world.

Collaborative Culture: Cross-functional teams that value creativity, feedback, and growth.

Comprehensive Benefits: Competitive salary, health coverage, 401(k) with match, and more.

Austin-Based: Work in one of the most vibrant tech hubs in the country.