Technical Support Specialist - Developer

ManilaHybridmid

Customer SupportTechnical Support Specialist

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Quick Summary

Key Responsibilities

Advanced Technical Troubleshooting Diagnose and resolve escalated cases requiring deep knowledge of .NET Core, ASP.NET, MVC, Web API , microservices, WebSockets, distributed systems,

Requirements Summary

4–8 years of experience in Technical Support, Application Support, Escalation Engineering, Dev Support, or related advanced technical role. Strong hands-on experience with: HTTP NET, .NET Core, MVC,

Technical Tools

Customer SupportTechnical Support Specialist

Join us in bringing joy to customer experience. Five9 is a leading provider of cloud contact center software, bringing the power of cloud innovation to customers worldwide.

Living our values everyday results in our team-first culture and enables us to innovate, grow, and thrive while enjoying the journey together. We celebrate diversity and foster an inclusive environment, empowering our employees to be their authentic selves.

Responsibilities

~1 min read

Diagnose and resolve escalated cases requiring deep knowledge of .NET Core, ASP.NET, MVC, Web API, microservices, WebSockets, distributed systems, and backend integrations.
Perform code-level analysis, including interpretation of C#, .NET logic, service dependencies, object models, and API flows.
Troubleshoot across the full stack: backend services, API layers, client–server communication, SQL queries, cloud components, and containerized applications.
Reproduce complex scenarios, isolate defects, evaluate performance issues, and validate engineering patches or workarounds.

Apply working knowledge of C#, .NET, JavaScript, TypeScript, SQL, and other relevant programming languages to diagnose technical issues.
Understand software architecture, including SOLID principles, design patterns, multithreading, and asynchronous programming.
Analyze stack traces, logs, exceptions, and code behaviors to identify underlying problems.
Utilize tools such as Postman, Fiddler, Wireshark, Splunk, Kibana, CloudWatch, and debugger utilities.

Partner with Engineering teams to provide complete defect reports with reproducible steps, environment details, logs, and recommended hypotheses.
Participate in triage meetings, RCA discussions, sprint reviews, and pre-release validation activities.
Work closely with Product, Cloud Ops, Security, and QA to maintain product stability and drive continuous improvement.

Act as a technical liaison for key customer accounts needing elevated, specialized support.
Provide clear explanations of root causes, product behavior, architectural constraints, and long-term remediation plans.
Anticipate potential issues by analyzing trends and proactively recommending configuration, usage, or architectural optimizations.

Requirements

~1 min read

4–8 years of experience in Technical Support, Application Support, Escalation Engineering, Dev Support, or related advanced technical role.
Strong hands-on experience with:
- HTTP
- NET, .NET Core, MVC, Web API
- REST APIs, Postman/API tools, JSON APIs
- SQL databases (MSSQL, MySQL)
- Python, Bash
- AWS or other cloud environments
- Log analysis using Splunk, Kibana, CloudWatch, or similar tools
Solid understanding of:
- Microservices architecture
- Distributed systems and integrations
- Data structures, SOLID principles, design patterns
- Performance monitoring and multithreaded application behavior
Ability to read, understand and write code samples
Strong analytical diagnostic, and problem-solving abilities
Excellent written and verbal communication skills
Ability to work independently and manage multiple escalations concurrently
High level of attention to detail and documentation discipline