New 
Software Support & Maintenance Engineer
 Quadrant, Inc. | |
 United States, Virginia, Fairfax | |
 Jan 20, 2026 | |
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Software Support & Maintenance Engineer Fairfax, VA Pay From: $100,000 per year MUST: Experienced Software Support & Maintenance Engineer 3-6 years of experience in software support, operations, or maintenance engineering. Strong practical experience with: .NET / C#, Python, Angular Experience with relational databases and SQL Hands on experience with REST API's. Git, ITSM tools Knowledge of aviation systems or aeronautical data standards (AIM, AIXM, NOTAM, SWIM). Bachelor's degree in Computer Science, Software Engineering, or equivalent experience. DUTIES: Resolve complex L2/L2+ incidents involving application logic, cloud infrastructure, and database layers. Perform deep technical analysis using logs, metrics, traces, and database diagnostics. Identify root causes for recurring incidents and implement corrective and preventive measures. Escalate architectural or core code issues to L3 with well-documented findings and impact analysis. Application Support & Maintenance Troubleshoot backend services (.NET / C#, Python) and frontend applications (Angular). Implement minor code fixes, configuration changes, and controlled data corrections under change management. Support application releases, hotfixes, and post-deployment validation in Azure environments. Assist with CI/CD pipeline validation and deployment troubleshooting. Quadrant is an affirmative action/equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, status as a protected veteran, or status as an individual with a disability. "Healthcare benefits are offered to all eligible employees according to compliance mandated by the Affordable Care Act". | |