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Software Engineer

1 month ago


Nanjing, Jiangsu, China Calix Full time
Job Title: Staff Software Engineer

Calix is a leading provider of cloud and appliance-based platforms and managed services for broadband service providers. We are seeking an experienced Staff Software Engineer to join our team in Nanjing, China.

About the Role

We are looking for a highly skilled software engineer to develop and maintain the Wi-Fi, GPON, EPON, Ethernet, and IoT devices within our Calix Development Center in Nanjing and U.S. sites. The successful candidate will be responsible for implementing management layer protocols, network services, and software security, particularly for Broadband USP/TR69/TR98/TR181 specifications.

Key Responsibilities
  • Analyze use cases and collaborate with cross-functional teams to provide solutions for EXOS services (SmartMDU and SmartBiz and other services).
  • Evaluate solutions and choose the most suitable option based on overall considerations.
  • Develop Linux applications/services on the EXOS platform, perform unit tests, and deliver to the field team.
  • Maintain applications/services and resolve issues found by the field team, CI, ST, and field engineers.
  • Identify bottlenecks in services/applications and optimize them.
  • Develop and maintain the EXOS platform interface to the cloud.
  • Develop and maintain the EXOS configuration and management modules.
  • Develop and maintain the driver manager for captive portal and client isolation.
Requirements
  • Master's or Bachelor's degree in Computer Science, Electrical Engineering, Optical Telecommunication, or a related field.
  • At least 10 years of experience in software development.
  • Strong coding skills, preferably in C/C++.
  • Solid experience with Linux shell tools, busybox, and progress.
  • Ability to analyze and summarize problems quickly.
  • Familiarity with PON protocols: GPON/EPON standard protocol, and private protocol for Calix.
  • Familiarity with AE ONT registration and configuration management.
  • Familiarity with data path of Broadcom.
  • Familiarity with captive portal and related services.
  • Familiarity with Linux internals: network (NAT, firewall, route, bridge, L2/L3 forward), memory management, file system, CPU schedule, sockets, process, and threads.
  • Familiarity with CMS/CSC/E7 and other configuration platforms is a plus.
  • Excellent written and verbal communication skills.
Preferred Qualifications
  • Good ability to multitask, prioritize tasks, and manage time efficiently.
  • Good collaboration and communication skills.
  • Strong thirst for knowledge and exploration spirit.
  • Self-motivation and sense of responsibility.