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.NET Application Maintenance Engineer L3 Senior
Bogotá, Bogota, COPosted 1 months ago
hybrid
Job Description
.NET Application Maintenance Engineer L3 Senior
Requirements:
Must have:
Senior experience in application maintenance and production support at L3 level
Strong expertise in C# and .NET Core Framework
Solid experience debugging and troubleshooting end‑to‑end application flows
Advanced SQL knowledge, query analysis, optimization, ODBC, OPENQUERY
Experience diagnosing performance and latency issues in production systems
Experience analyzing APIs, integrations, and database interactions
Ability to operate in high‑impact production environments with low fault tolerance
Strong root cause analysis (RCA) capabilities
Experience applying hotfixes and mitigations in critical systems
Ability to work under pressure and make technical decisions in uncertain scenarios
Strong collaboration and communication skills with technical and business stakeholders
Nice to Have:
Experience with containerized environments, Docker
Experience maintaining integrations with Zapier and HubSpot CRM
Experience implementing incremental improvements, caching, async processing
Experience working with ticketing systems and advanced support workflows
Responsibilities:
Diagnose and resolve complex L3 production incidents
Perform end‑to‑end analysis across APIs, integrations, and databases
Debug and correct issues in C# and .NET applications
Execute and optimize SQL queries, including ODBC and OPENQUERY
Identify and resolve performance degradation and latency issues
Apply hotfixes and mitigation strategies in production systems
Maintain and adjust integrations with Zapier and HubSpot CRM
Validate, correct, and synchronize data across integrated systems
Perform root cause analysis and document findings
Implement incremental technical improvements, caching, asynchronous processing
Handle advanced support tickets and escalations
Coordinate with stakeholders to ensure rapid diagnosis and resolution
Ensure service continuity in high‑availability production environments
Contribute to operational stability and long‑term system resilience
Required Languages
Advanced English 80-95%
Location
Bogotá and surroundings (Hybrid), Rest of Colombia (Remote)