View All Jobs/Careers

Search Jobs

Job Information


About CenturyLink

CenturyLink (NYSE: CTL) at is the second largest U.S. communications provider to global enterprise customers. With customers in more than 60 countries and an intense focus on the customer experience, CenturyLink strives to be the world’s best networking company by solving customers’ increased demand for reliable and secure connections. The company also serves as its customers’ trusted partner, helping them manage increased network and IT complexity and providing managed network and cyber security solutions that help protect their business.

Job Summary

This role is within the CenturyLink CDN development team responsible for the DNS platform used as an on-ramp for content requests coming into CenturyLink CDN platform. The software we support takes as input IP localization information, server load statistics, and customer configuration data to determine the best server to deliver the requested content from.

We are looking for a talented and motivated person to join our team to help to continuously improve our systems and help deliver on a number of roadmap projects. Our ideal candidate is an experienced engineer who is an expert in C, strong in Perl, and knowledgeable in various networking protocols.

Job Description

The primary responsibilities for this role include supporting our existing codebase while also designing and developing new features for our CDN systems. The candidate must be able to understand the system end-to-end, document and effectively communicate proposed solutions, and implement them in a reliable, accurate, and performant way. Tasks may include software design, coding, unit testing, and documentation.


Desired candidates will have a strong background in the following:

  • Expert C programmer in Unix-based environments

  • Experience in at least two of the following languages: Perl, Python, Java, GoLang

  • Experience with various testing frameworks (e.g. PyTest)

  • Strong computer science fundamentals (OOP, data structures, algorithms, etc…)

  • Experience using source control (Git preferred)

Highly qualified candidates will possess the following:

  • Knowledge of one or more of the following (preferred): DNS, HTTP, BGP, and Anycast

  • Experience writing large-scale, business-critical, highly-distributed software

  • Experience using NoSQL databases (e.g. Cassandra) considered a plus


Bachelors or Equivalent

Masters or Equivalent

Alternate Location: US-California-San Diego; US-California-Thousand Oak; US-Colorado-Broomfield; US-Oklahoma-Tulsa

Requisition # : 212556

This job may require successful completion of an online assessment. A brief description of the assessments can be viewed on our website at

EEO Statement

We are committed to providing equal employment opportunities to all persons regardless of race, color, ancestry, citizenship, national origin, religion, veteran status, disability, genetic characteristic or information, age, gender, sexual orientation, gender identity, marital status, family status, pregnancy, or other legally protected status (collectively, “protected statuses”). We do not tolerate unlawful discrimination in any employment decisions, including recruiting, hiring, compensation, promotion, benefits, discipline, termination, job assignments or training.


The above job definition information has been designed to indicate the general nature and level of work performed by employees within this classification. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities, and qualifications required of employees assigned to this job. Job duties and responsibilities are subject to change based on changing business needs and conditions.