As a part of the global industrial organization Marmon Holdings—which is backed by Berkshire Hathaway—you’ll be doing things that matter, leading at every level, and winning a better way. We’re committed to making a positive impact on the world, providing you with diverse learning and working opportunities, and fostering a culture where everyone’s empowered to be their best.
Marmon Global Innovation Center (GIC), a division of Marmon Holdings, is seeking a Senior Software Engineer to guide junior engineers and drive long-term projects for Coilmaster Corporation, a leading Marmon company specializing in fin and tube heat exchangers. This senior role is responsible for end-to-end software development of Coilmaster’s EzCoil coil selection and thermal-fluid modelling platform. The Sr. engineer will leverage their domain expertise in thermal-fluid sciences and experience in software engineering to architect, develop, and validate models while ensuring reliable and efficient implementation in code.As a hands-on leader, you will directly contribute to software development and testing while also mentoring junior engineers. Strong project management and scheduling skills are required to coordinate deliverables across multiple initiatives.
Mandatory Skills
- 8-10 years of production software experience for engineering/simulation applications (C#/.NET strongly preferred).
- Proven track record owning design, implementation, and maintenance of engineering tools (e.g., rating/selection software).
- Strong object-oriented design and software architecture skills.
- Proficient with Git-based workflows, code review, and automated unit/integration testing.
- Comfortable working in an iterative/agile environment and translating thermal/ mechanical requirements into robust software features.
Desired Skills
• Experience with Azure / AWS cloud services
• Knowledge of JavaScript frameworks (Angular / React)
• Familiarity with CI/CD pipelines and DevOps tools
• Exposure to microservices architecture
Opportunities for Growth
• Gain exposure to modern .NET technologies and cloud-native development
• Opportunity to work on end-to-end project lifecycles including design, development, testing, and deployment
• Develop deeper expertise in architecture, performance optimization, and system scalability
• Collaborate with cross-functional teams including product management, QA, and DevOps
• Pathway to grow into Senior Developer / Technical Lead roles with leadership and mentoring opportunities
Required Qualifications
• Bachelor’s degree in Computer Science, Information Technology, or a related field
• 8-10 years of professional experience in .NET application development
• Strong command over C#, .NET Core, ASP.NET MVC / Web API, and SQL Server
• Working knowledge of front-end technologies (HTML, CSS, JavaScript)
• Experience in developing, testing, and deploying scalable enterprise applications
• Familiarity with source control and agile practices
• Excellent communication and collaboration skills with a proactive approach to problem-solving
Following receipt of a conditional offer of employment, candidates will be required to complete additional job-related screening processes as permitted or required by applicable law.
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