Senior Software Engineer-C#

Job summary

Design, build, and maintain stable, scalable enterprise applications, APIs, and microservices, primarily using C#, .NET, and AWS. Collaborate with product, QA, project management, and engineering colleagues to deliver quality solutions, improve engineering practices, adopt useful technologies, and help shape product vision.

Job details

Morningstar is seeking a Senior Software Engineer (Backend) to design, build, and maintain scalable enterprise applications and APIs. The role focuses on backend development using C#, .NET, cloud technologies (AWS), microservices, and modern software engineering practices. The engineer will collaborate closely with Product Managers, QA, Project Managers, and other developers to deliver high-quality solutions that support Morningstar's investment research and technology platforms. Job Responsibilities : Build well-designed, well-engineered, stable, and scalable products. Follow software design best practices such as continuous integration, test-driven development, and regular deployments. Be passionate about quality, process, programming, and investing in general Find opportunities for improvement, seize them, and then share your findings with others. Take ownership of the success of the team with a "gets things done" attitude. Seek understanding of and opportunities to leverage new technologies. Have or desire to become an AWS certified developer Help to shape product vision Qualifications: A bachelor's degree in computer science or a related field in software development with 5+ years of experience. Highly motivated individual with the potential and desire to learn new technologies and take on increasing levels of responsibility. Advanced knowledge of C# and the Microsoft .NET Stack. Solid experience with Entity Framework, LINQ. Experience in Web APIs, MVC, Dependency Injection, Asynchronous programming. Experience with supporting technologies: Databases (SQL Server, AWS Aurora, MySQL, Postgres, NoSQL), Python, REST API’s Demonstrated ability to use AI tools responsibly for code generation, refactoring, unit test creation, documentation, debugging, and software design while maintaining strong engineering judgment and code ownership. Ability to critically evaluate AI-generated code for correctness, security, performance, maintainability, and compliance with software development standards. Proven knowledge of enterprise software concerns such as security, scalability, transaction management, and concurrency. Demonstrable experience architecting and building micro service solutions hosted on AWS. An understanding of how to protect software solutions from common security vulnerabilities. Exposure to and understanding of DevOps with tools like Harness. Knowledge of object-oriented design, domain modeling, design patterns, and building highly scalable and available systems. Base Salary Compensation Range $93,200.00-$136,696.00 Incentive Target Percentage 12.5% Annual Morningstar's hybrid work environment gives you the opportunity to collaborate in-person each week as we've found that we're at our best when we're purposely together on a regular basis. In most of our locations, our hybrid work model is four days in-office each week. A range of other benefits are also available to enhance flexibility as needs change. No matter where you are, you'll have tools and resources to engage meaningfully with your global colleagues. 100_MstarResCanad Morningstar Research, Inc. (Canada) Legal Entity

What you’ll do

Design, build, and maintain stable, scalable enterprise applications, APIs, and microservices, primarily using C#, .NET, and AWS. Collaborate with product, QA, project management, and engineering colleagues to deliver quality solutions, improve engineering practices, adopt useful technologies, and help shape product vision.

Requirements

Requires a bachelor's degree in computer science or a related field and at least five years of software development experience, with advanced C# and .NET knowledge. Candidates should have experience with APIs, databases, AWS-hosted microservices, enterprise security and scalability, DevOps, and responsible use and evaluation of AI development tools.

Listed skills

• C++ · Preferred
• .NET · Preferred
• Amazon Web Services · Preferred
• REST APIs · Preferred
• Python · Preferred
• AI-assisted development · Preferred

Other relevant skills

Identified from the job description. Confirm important requirements above.

• C#
• .NET
• AWS
• Microservices
• Entity Framework
• LINQ
• Web APIs
• MVC
• Dependency Injection
• Asynchronous Programming
• SQL Server
• REST APIs
• Python
• DevOps
• Software Architecture
• AI-Assisted Development
• SQL (Programming Language)
• Project Management
• Amazon Web Services
• Research
• Application Programming Interface (API)
• .NET Framework
• Python (Programming Language)
• Software Engineering
• Safety Assurance
• Willingness To Learn
• Scalability
• Computer Science
• Self-Motivation
• RESTful API
• Enterprise Application Software
• NoSQL
• MySQL
• Software Design Patterns
• Unit Testing
• Debugging
• PostgreSQL
• Continuous Integration
• Back End (Software Engineering)
• Securities Research
• Software Solutions
• Software Development
• Model View Controller
• Software Design
• C# (Programming Language)
• Object-Oriented Design
• Cloud Technologies
• AI-Generated Code
• AWS Certified Developer
• Test-Driven Development (TDD)

Job areas

• Software
• Technology
• Engineering
• Software Engineer
• Software Developer / Engineer
• Software Developers

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