SR LEAD SOFTWARE DEVELOPER / High Performance Linux/C Web Caching

Date: May 1, 2019

Location: BROOMFIELD, CO, US, 80021

CenturyLink (NYSE: CTL) is a global communications and IT services company focused on connecting its customers to the power of the digital world. CenturyLink offers network and data systems management, big data analytics, managed security services, hosting, cloud, and IT consulting services. The company provides broadband, voice, video, advanced data and managed network services over a robust 265,000-route-mile U.S. fiber network and a 360,000-route-mile international transport network. Visit CenturyLink for more information.


Job Summary

Be a part of the team that is responsible for the architecture, analysis, design, and development of Content Delivery Network software. Work on high-performance distributed systems deployed on a massive scale unmatched in almost any corporate computing environment.  Responsibilities include analysis, design, and implementation of multiple components or systems.   Development is primarily in event-driven style of C language on Linux.

Job Description

  • Designs, develops, maintains, and supports new and existing code written in multiple languages (one/more of perl, C++, Python, Lua, javascript, Go) on Linux
  • Designs and codes automated unit and system tests using adopted frameworks
  • Reviews peers' designs and code
  • Understands a complex distributed system end-to-end
  • Documents and effectively communicates proposed solutions, and implements them in a reliable, accurate, and performant way
  • Works with stakeholders in Architecture and Engineering teams to ensure requirements and designs meet expectations 
  • Participates in a fast-moving agile planning environment, including planning and estimating work



  • Bachelor's degree or higher in CS or similar field, with 8+ years professional experience, or 6+ years with a Master's Degree
  • Extensive hands-on experience in the architecture, design and development of scalable and secure distributed systems based on high-performance software
  • Strength in fundamental principles of Computer Science
  • Proven ability to work in pure C in a high-performance concurrent event-driven model, on a Linux or similar platform
  • Good understanding of HTTP family protocols
  • Outstanding initiative, self-motivation and drive; excellent written and verbal communication skills; ability to estimate, plan, prioritize and multitask

Ideal candidate will also have:

  • Experience in internals of web server, proxy, or similar code
  • Ability to work in (one or more of) C++, Python, Perl, Lua, and Go
  • Deep knowledge of HTTP family protocols including http2, QUIC
  • Understanding of SSL/TLS
  • Experience tracing and tuning TCP/IP


Bachelors or Equivalent in Computer Science

Masters or Equivalent in Computer Science

Alternate Location: US-Arizona-Phoenix; US-Arizona-Scottsdale; US-Arizona-Sedona; US-Arizona-Tempe; US-Arkansas-Fayetteville; US-California-El Segundo; US-California-Irvine; US-California-Los Angeles; US-California-San Diego; US-California-San Francisco; US-California-San Jose; US-California-Thousand Oak; US-Colorado-Boulder; US-Colorado-Broomfield; US-Colorado-Denver; US-Colorado-Littleton; US-Florida-Ft Lauderdale; US-Florida-Jacksonville; US-Florida-Naples; US-Florida-Orlando; US-Georgia-Alpharetta; US-Georgia-Atlanta; US-Illinois-Chicago; US-Indiana-Indianapolis; US-Kansas-Overland Park; US-Massachusetts-Boston; US-Michigan-Detroit; US-Minnesota-Eagan; US-Minnesota-Eden Prairie; US-Minnesota-Minneapolis; US-Missouri-St Louis; US-Nevada-Las Vegas; US-Nevada-North Las Vegas; US-Oregon-Portland; US-Texas-Austin; US-Texas-Dallas; US-Texas-Fort Worth; US-Texas-Houston; US-Virginia-Fairfax; US-Virginia-Reston; US-Washington-Seattle

Requisition #: 210952

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.

Nearest Major Market: Denver

Job Segment: C#, Developer, Engineer, Consulting, Linux, Technology, Engineering

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