Application Support Engineer (Level 3)

About the role

We are looking for an Application Support Engineer (L3) to ensure the stability and high availability of our business‑critical applications. You will work in a fast‑paced environment, investigating production incidents, performing root‑cause analysis, and delivering sustainable fixes across distributed systems.

Key responsibilities

• Investigate and resolve complex production incidents in micro‑services based applications.
• Analyze logs, API traffic, SQL data, and system integrations to pinpoint root causes.
• Perform structured Root Cause Analysis (RCA) and document corrective actions.
• Debug and apply small code fixes in Node.js/TypeScript services.
• Collaborate with cross‑functional teams to implement preventive measures.
• Maintain and improve CI/CD pipelines, deployment validation, and release processes.

Required profile

• 4+ years of experience in application or production support, software engineering, or related technical roles.
• Strong analytical and problem‑solving abilities with clear communication skills.
• Advanced English proficiency (B2+).
• Residency in El Salvador, Mexico, or Colombia.

Required skills

• Node.js and TypeScript (ability to read, debug, and implement small fixes).
• REST APIs, HTTP protocols, and API testing tools such as Postman.
• Advanced SQL (queries, joins, stored procedures, performance analysis).
• Git, GitFlow, pull‑request workflow, and hot‑fix handling.
• Microservices architecture, asynchronous messaging, and Azure Service Bus.
• Azure DevOps, Azure App Services, Azure Monitor, and CI/CD pipelines.
• Fundamentals of authentication, authorization, and secrets management.
• Browser developer tools for front‑end troubleshooting (optional).