Application Engineer (Microsoft & Java Technologies)

Role Description
Application Engineer (Microsoft & Java Technologies)
The Role
The Senior Application Engineer is responsible for developing, modernizing, and supporting enterprise applications across Microsoft and Java technology stacks. The role supports application migration, modernization, integration, and production support initiatives while working closely with business, infrastructure, and project teams.
What You’ll Do
Application Development.
Develop and maintain applications using C#, ASP.NET, .NET Framework 4.x, .NET 8/10, Java, Spring Boot, and Microservices.
Build web applications using Angular, React, JavaScript, HTML5, and CSS.
Design and develop APIs, integrations, and reusable application components.
Participate in solution design, code reviews, and technical planning. Modernization & Migration. Assess and modernize legacy applications.
Support application, cloud, and data center migration initiatives.
Analyze dependencies, interfaces, and technical risks.
Improve application performance, scalability, and security. Database & Integration.
Develop and optimize SQL queries, stored procedures, and database objects.
Support SQL Server, Oracle, DB2, MongoDB, Snowflake, and MySQL environments. Develop integrations using REST APIs, Kafka, messaging, and file-based interfaces. Production Support & DevOps.
Provide Level 3 application support and incident resolution.
Perform root cause analysis and implement long-term fixes.
Support CI/CD pipelines, deployments, and release activities.
Implement monitoring, logging, and automation solutions.
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 Skills:
C#, ASP.NET MVC/Core, .NET Framework 4.x, .NET 8/10
Java/J2EE, Spring Boot, Spring MVC, Microservices.
Angular, React, JavaScript, TypeScript, HTML5, CSS
REST APIs, JSON, XML
SQL Server, Oracle, DB2, MongoDB, Snowflake, MySQL
Azure, AWS, Docker, Kubernetes, OpenShift, Git, Azure DevOps, Maven, Gradle, Bamboo, plunk, Kafka
Strong troubleshooting, problem-solving, and communication skills
Preferred Qualifications:
Experience with application migration and modernization programs.
Experience supporting healthcare, insurance, or benefits administration platforms. Knowledge of cloud-native and containerized architectures.
Bachelor's degree in Computer Science, Engineering, or related field.
5+ years of enterprise application development and support experience.
Key Competencies:
Full Stack Development, Application Modernization, Cloud & DevOps Engineering, API & Integration Development, Production Support & Root Cause Analysis, Agile Delivery & Continuous Improvement
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-US
Compensation Range: $68,000-$102,000
Who We Are
Since 1999, UST has worked side by side with the world’s best companies to make a powerful impact through transformation. Headquartered in the United States, UST is powered by technology, driven by AI, inspired by people, and led by our purpose, we partner with our clients from design to operation. Our AI-driven digital solutions, proprietary platforms, engineering, R&D, products, and innovation ecosystem turn core challenges into impactful, disruptive business outcomes. With deep industry knowledge and a future-ready mindset, we infuse expertise, innovation, and agility into our clients’ organizations—delivering measurable value and positive lasting change for them, their customers, and communities around the world. Together, with 30,000+ employees in 30+ countries, we build for boundless impact—touching billions of lives in the process. Visit us at .
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.
Equal Employment Opportunity Statement
UST is an Equal Opportunity Employer.
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other applicable characteristics protected by law. We will consider qualified applicants with arrest or conviction records in accordance with state and local laws and “fair chance” ordinances.
UST reserves the right to periodically redefine your roles and responsibilities based on the requirements of the organization and/or your performance.
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Skills
NET, Application Migration, Splunk, Apache Kafka, C#, JavaScript, React

Work arrangement
Yes