L3 Support Engineer – .NET SaaS Troubleshooter (Remote)

Glorium Technologies Corp; Polska; Hybrid; PLN 90,000 - 150,000; Full time

Job summary

Glorium Technologies Corp is seeking a skilled IT support professional to own the L3 escalation layer for a SaaS platform used by US-based providers. You will diagnose deep issues across backend services, APIs, and databases, driving root cause analysis with Dev and DevOps to implement permanent fixes.

The role emphasizes knowledge base upkeep, incident management, and validation of releases from an operational standpoint, with a flexible remote/hybrid setup and strong emphasis on English

Qualifications

• 3-5+ years in IT support roles, preferably SaaS or enterprise apps.
• Hands-on experience troubleshooting .NET-based applications (C# ASP.NET Core).
• Experience with microservices architectures and inter-service communication.
• Ability to diagnose database issues with MySQL or PostgreSQL and read query plans.
• Familiarity with API troubleshooting, tokens, scopes, and auth flows.
• Experience with ticketing and incident workflows (JIRA or similar).
• Excellent written and spoken English (Upper-Intermediate or above).
• Comfort using AI tools to speed diagnostics and document solutions.
• Willingness to start work at 2PM CET for client timezone overlap.

Responsibilities

• Own the L3 escalation layer and minimize needs for escalation to development.
• Diagnose and resolve deep issues across backend services, APIs, and databases.
• Drive root cause analysis with Dev and DevOps for permanent fixes.
• Keep knowledge base updated with incidents, solutions, and patterns.
• Support releases and bug fix validation from an operational perspective, including CI/CD touchpoints.

Skills

L3 escalation

SaaS support

C# / ASP.NET Core

Microservices

DB troubleshooting (MySQL/PostgreSQL)

API troubleshooting

JIRA / incident management

English (Upper-Intermediate)

AI-assisted diagnostics

CI/CD knowledge

Tools

MySQL

PostgreSQL

Job description

Glorium Technologies Corp is seeking a skilled IT support professional to own the L3 escalation layer for a SaaS platform used by US-based providers. You will diagnose deep issues across backend services, APIs, and databases, driving root cause analysis with Dev and DevOps to implement permanent fixes.

The role emphasizes knowledge base upkeep, incident management, and validation of releases from an operational standpoint, with a flexible remote/hybrid setup and strong emphasis on English