Role description
Full Stack .NET Application Engineer
The Role
UST is seeking a Full Stack .NET Application Engineer to design, develop, modernize, and support enterprise applications built on Microsoft technologies. The role collaborates with business stakeholders, architects, infrastructure teams, and support organizations to deliver scalable, secure, and high-performing solutions while supporting application modernization and migration initiatives.
What You'll Do
• Design, develop, and maintain applications using C#, ASP.NET, .NET Framework 4.x, .NET 8/10, and Angular.
• Develop APIs, integrations, and reusable application components.
• Translate business requirements into scalable technical solutions.
• Participate in architecture, design, and code reviews.
• Assess and modernize legacy applications.
• Support application migration, platform upgrades, and cloud readiness initiatives.
• Analyze dependencies, interfaces, and technical risks.
• Optimize applications for performance, security, and maintainability.
• Develop and execute unit and integration tests.
• Support SIT, UAT, deployment validation, and defect resolution.
• Ensure compliance with coding, security, and quality standards.
• Provide Level 3 support for critical business applications.
• Troubleshoot application, integration, and performance issues.
• Conduct root cause analysis and implement preventive solutions.
• Support release, deployment, and hypercare activities.
• Contribute to CI/CD pipeline implementation and deployment automation.
• Implement monitoring, logging, and observability solutions.
• Automate repetitive development and operational tasks.
• Maintain technical documentation, deployment guides, and support runbooks.
• Support knowledge transfer and adherence to development standards.
This position description identifies the responsibilities and tasks typically associated with the performance of the position. Other relevant essential functions may be required.
What You Need
Required
• C#.
• ASP.NET MVC and ASP.NET Core.
• .NET Framework 4.x.
• .NET 8/10.
• Angular.
• HTML5, CSS3, JavaScript, and TypeScript.
• REST API development.
• Microsoft SQL Server and T-SQL.
• Git and Azure DevOps.
• IIS and Windows Server.
• PowerShell.
• CI/CD and DevOps practices.
• Application performance tuning.
• Strong problem-solving and communication skills.
Preferred
• Experience with application modernization and migration programs.
• Experience with cloud services.
• Knowledge of ServiceNow, PowerShell, and automation tools.
• Experience supporting healthcare, insurance, or benefits administration platforms.
• Bachelor's degree in computer science, engineering, or a related field.
• 5+ years of enterprise application development experience.
Location & Compensation
Compensation can differ depending on factors including but not limited to the specific office location, role, skill set, education, and level of experience. UST provides a reasonable range of compensation for roles that may be hired in various U.S. markets as set forth below.
Role Location: Remote
Compensation Range: $68,000 - $102,000
Benefits
Full-time, regular employees accrue a minimum of 10 days of paid vacation per year, receive 6 days of paid sick leave each year (pro-rated for new hires throughout the year), 10 paid holidays, and are eligible for paid bereavement leave and jury duty. They are eligible to participate in the Company's 401(k) Retirement Plan with employer matching. They and their dependents residing in the US are eligible for medical, dental, and vision insurance, as well as the following Company-paid Employee Only benefits: basic life insurance, accidental death and disability insurance, and short- and long-term disability benefits. Regular employees may purchase additional voluntary short-term disability benefits, and participate in a Health Savings Account (HSA) as well as a Flexible Spending Account (FSA) for healthcare, dependent child care, and/or commuting expenses as allowable under IRS guidelines. Benefits offerings vary in Puerto Rico.
Part-time employees receive 6 days of paid sick leave each year (pro-rated for new hires throughout the year) and are eligible to participate in the Company's 401(k) Retirement Plan with employer matching.
Full-time temporary employees receive 6 days of paid sick leave each year (pro-rated for new hires throughout the year) and are eligible to participate in the Company's 401(k) program with employer matching. They and their dependents residing in the US are eligible for medical, dental, and vision insurance.
Part-time temporary employees receive 6 days of paid sick leave each year (pro-rated for new hires throughout the year).
All US employees who work in a state or locality with more generous paid sick leave benefits than specified here will receive the benefit of those sick leave laws.
As part of our recruitment process, UST may use AI or automated tools to support activities such as application screening, scheduling, or interview assistance. All hiring decisions are made by our recruitment team. Where applicable law requires it, further notice will be provided separately.
