Full Stack Software Engineer - QA Support Engineer

Full Stack Software Engineer / QA Support Engineer

LMI is seeking a well-rounded, customer-facing Full Stack Software Engineer / QA Support Engineer to support the development, testing, and enhancement of modern web applications within the MG – Military Health and VA.

This role is ideal for someone who is technically strong, proactive and highly communicative — an individual who thrives in dynamic environments, interacts confidently with customers and stakeholders, and contributes meaningfully across the entire software lifecycle.

The selected candidate will work closely with lead engineers, key customers and stakeholders to deliver high-quality software solutions, gather and refine requirements, provide demos and walkthroughs, and support both development and quality assurance activities.

LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.

Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, healthcare, and energy sectors—helping agencies navigate complexity and outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value.

Responsibilities

This role includes both technical engineering and customer/stakeholder engagement. The Full Stack Software Engineer / QA Support Engineer will:

• Support the design, development, testing, and maintenance of full-stack web applications.
• Develop and maintain frontend functionality using TypeScript, HTML, CSS, and modern frameworks such as Angular.
• Support backend API and service development using C# and ASP.NET Web API.
• Assist with SQL Server development, including queries, stored procedures, views, and data validation.
• Perform functional, regression, integration, and usability testing for web applications and APIs.
• Develop or maintain automated test cases, test scripts, and testing documentation.
• Identify, document, reproduce, and track software defects through resolution.
• Support CI/CD pipeline activities and secure coding best practices.
• Participate in Agile ceremonies including backlog refinement, sprint planning, and retrospectives.

• Engage directly with customers, operations teams, and program stakeholders to understand needs, gather requirements, clarify expectations, and ensure alignment with business goals.
• Provide product demos, feature walkthroughs, and technical presentations to customers and internal audiences.
• Collaborate closely with UI/UX designers to translate user insights into intuitive, user-centered interfaces and interactions.
• Communicate clearly and professionally through written documentation, customer updates, user guides, release notes, and internal knowledge sharing.
• Act as a liaison between technical and non-technical stakeholders, ensuring complex issues are explained in a clear, accessible way.
• Help triage customer-reported issues, support root-cause analysis discussions, and guide customers through validation and testing as needed.

This is not a heads-down, isolated engineering role — this is a highly interactive, communicative, and collaborative position where the ideal engineer enjoys building relationships as much as they enjoy building software.

Qualifications

Minimum Qualifications:

• Bachelor's degree in Computer Science, Information Systems, Engineering, or related discipline, or equivalent practical experience.
• 5+ years of professional experience supporting web application development and/or software testing.
• Experience developing or supporting applications using TypeScript, HTML, CSS, and frontend frameworks such as Angular.
• Experience with C# and ASP.NET MVC/Web API development.
• Familiarity with SQL Server, T-SQL queries, stored procedures, and relational database concepts.
• Experience performing manual testing, regression testing, or QA validation activities.
• Understanding of software development lifecycle (SDLC) processes and Agile methodologies.
• Strong troubleshooting, analytical, and communication skills.

Desired Skills:

• Experience supporting enterprise or government application environments.
• Experience with automated testing frameworks and test automation tools.
• Familiarity with Azure cloud services, including App Service and Application Insights.
• Experience working with REST APIs and API testing tools such as Postman or Swagger/OpenAPI.
• Understanding of CI/CD pipelines and source control workflows using Git.
• Exposure to authentication and authorization technologies such as SAML, OAuth, or Okta SSO.
• Familiarity with secure development practices and OWASP principles.
• Experience supporting modernization efforts involving Angular upgrades or .NET migrations.
• Knowledge of Agile or SAFe development methodologies.
• Strong attention to detail and ability to manage multiple priorities in fast-paced environments.
• Background working with UI/UX teams or participating in user-centered design discussions.
• Experience gathering requirements, facilitating customer feedback sessions, or conducting user acceptance test support.

Tools & Technologies (Representative):

• Frontend: TypeScript, Angular, HTML, CSS
• Backend: C#, ASP.NET MVC/Web API,.NET
• Database: SQL Server, T-SQL, SSMS
• Testing: Manual Testing, Regression Testing, API Testing, Test Automation
• Cloud/DevOps: Azure App Service, Application Insights, CI/CD Pipelines
• Collaboration: Git, Agile/Scrum, Jira/Azure Boards

Target salary range: $110,000 - 125,000

Disclaimer: The salary range displayed represents the typical salary range for this position and is not a guarantee of compensation. Individual salaries are determined by various factors including, but not limited to location, internal equity, business considerations, client contract requirements, and candidate qualifications, such as education, experience, skills, and security clearances.

Applicants must meet eligibility requirements for a U.S. Government security clearance. Only US Citizens are eligible for a security clearance. For this position, LMI will only consider applicants with security clearances or applicants who are eligible for security clearances, due to the nature of the work.