Network Support Engineer

A10 Networks, Inc.; San Jose (CA); On-site; USD 115,000 - 120,000; Full time

Job summary

A10 Networks, Inc. is seeking a Network Support Engineer in San Jose, California. In this role, you will troubleshoot and resolve complex network issues, ensuring customer satisfaction with A10's products. You will analyze traffic issues and optimize application performance in multi-cloud environments.

The ideal candidate has a Bachelor's degree in Computer Science and at least 3 years of technical experience. Networking certifications preferred.

Qualifications

• Bachelor’s degree in Computer Science, Engineering or related field, or equivalent practical experience.
• 3+ years of hands-on experience in network support or system administration.
• Networking certifications preferred (e.g., CCNA, CCNP, JNCIE, JNCIP).

Responsibilities

• Identify and troubleshoot L4–L7 traffic issues involving SSL and HTTP.
• Analyze performance related issues such as TCP retransmissions.
• Work with customer teams to resolve integration and configuration issues.

Skills

Troubleshooting L4–L7 traffic issues

Packet analysis using tcpdump/Wireshark

Network and application testing with Ixia/Spirent

Understanding of TCP/IP, HTTP/S, DNS

Education

Bachelor's degree in Computer Science or related field

3+ years of experience in network support

Tools

Wireshark

tcpdump

Ixia

Spirent

Job description

Network Support Engineer

As a Senior Network Engineer, you will directly interact with customers and other functional groups within A10 Networks to troubleshoot, identify and resolve product, configuration or network related issues. You will capture and document details and events in the CRM application throughout the solution discovery process. You will also participate in the bug verification process before a software patch code is released to the customers. You are the key resource to ensure customer satisfaction with A10’s products and services.

Key Responsibilities

• Identify and troubleshoot L4–L7 traffic issues involving SSL, HTTP, and other standard application layer protocols.
• Analyze performance related issues related to TCP retransmissions, session drops, and common HTTP errors.
• Work with customer network, application, and DevOps teams to resolve integration issues and identify configuration errors.
• Troubleshoot ACOS issues across hybrid and multi‑cloud deployments like AWS, Azure, OCI, and GCP.
• Resolve application layer security issues related to WAF, SSLi and perform traffic analysis to detect DDoS attacks.
• Use tools such as tcpdump, Wireshark to conduct packet‑level analysis to debug issues.
• Use traffic generation tools such as Ixia, Spirent or Apache JMeter for simulating network and application traffic during testing and troubleshooting scenarios.
• Reproduce customer issues in lab environments and verify software behavior.
• Contribute to KBs, FAQs and troubleshooting playbooks by summarizing resolved issues or lessons learned.
• Participate in internal training sessions and actively develop skills in packet analysis and advanced troubleshooting practices.

Qualifications

• Bachelor’s degree in Computer Science, Engineering or related technical field, or equivalent practical experience.
• Relevant education and 3+ years of hands‑on experience in network support, system administration or a similar technical role.
• Networking certifications preferred (e.g., CCNA, CCNP, JNCIE, JNCIP).
• Foundational understanding of networking concepts such as TCP/IP, HTTP/S, DNS, and SSL/TLS.
• Experience using packet capture tools like Wireshark or tcpdump.
• Exposure to load balancing or ADC platforms.
• Familiarity with cloud environments such as AWS, Azure, OCI or GCP.
• Familiarity or foundational experience with WAF, DDoS protection, or SSLi.

A10 Networks is an equal opportunity employer and a VEVRAA federal subcontractor. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law. A10 also complies with all applicable state and local laws governing nondiscrimination in employment.

Targeted compensation guideline: $115,000 - $120,000. Compensation will vary based on a number of factors, including market demand for specific skills, role type, job level, and individual qualifications. Final salary offers are determined by considerations including, but not limited to, subject matter expertise, demonstrated skill level, relevant experience, geographic location, education, certifications, and training.