Principal Architect

Centurylink Littleton , CO 80121

Posted 4 months ago

About CenturyLink

CenturyLink at (NYSE: CTL) 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

Principal Architect SDN/NFV

The Principal Architect will assume the lead role within the SDN/NFV Architecture, Engineering and Certification team, in developing, engineering and certifying end-to-end cloud-based service delivery architecture transcending multiple Internet/Web technologies and disciplines, consisting of IP based networks from client universal CPE, metro network, IP core to Data Center. The ideal Principal Architect will be a great motivator who can thrive in a fast-changing environment, with consistent drive to find ways to improve architecture, technology, share his or her expertise and inspire fellow employees.

Job Description

Architect, test and certify full-stack private and public cloud infrastructure including NFVi and PaaS applications solutions to meet diverse and complex business opportunities. Provide advanced technical leadership in research, design, analysis, testing and problem-solving efforts to the SDN/NFV products and services. The architecture, engineering, testing and certification scope includes microservices based element management systems, core IP systems (AAA) and IP network infrastructure. The Principal Architect must possess knowledge and hands-on experience in the End-to-End Orchestration, Service Assurance, Virtual Infrastructure Manager (VIM), Network Function Virtualization (NFVi) Infrastructure, SDN Controllers (DC, WAN, ACCESS), and Virtual Network Functions (VNF), SDWAN and Physical Network Function (PNF) Managers. The Principal Architect MUST have strong IP Routing, Switching, Systems Administration, Cloud Operating Systems such as OpenStack, OpenShift, Kubernetes, Automation and Security domain expertise in enterprise and service provider background.

The Principal Architect will interface with various organizational units from Marketing, Products Development to Operations, providing key architectures, engineering, test/certification inputs and solutions to the product requirements. The Principal Architect represents the Virtualization Architecture, Engineering and Certification organization, engaged from product inception to operational hand-off/market deployment of various IP products and services embracing DevOps model.


  • Prototype, Architect, Engineer, Test/integrate/validate and certify orchestration services in an Agile/DevOps paradigm from Build/Development, QA/UAT, Preproduction and Production environments in a continuous testing, integration and delivery.

  • Produce High-Level and Low-Level Design (HLD/LLD) Documents, Test Plans, Executive Presentations of Architectures, Test Results and Designs of Cloud Service Delivery Architecture from the IP Core/Metro, Edge, Universal CPE (uCPE) and Virtual CPE (vCPE).

  • Work with vendor engineers to design and facilitate development of methods, test tools and features to DevOps support SDN/NFV based services across managed and unmanaged networks in support of Proof of Concept (PoC) testing.

  • Architect and Design various types of White-box solutions for Data Center ToR, Metro and Universal CPE platforms.

  • Automate data center framework projects for virtualized and cloud computing core infrastructure including OpenStack, perform code review, continuous development/integration systems and development tools.

  • Establish developer workflow and code review process with Atlassian software tools such as Jira, Confluence, and Bitbucket. Implement continuous integration testing and release systems.

  • Partner and Solve technical engineering and certification issues with Original Equipment Manufacturer (OEM) vendors and suppliers


  • DevOps with Scrum Master certified experience desired

  • Configuration Management: Ansible, Ansible Tower, Puppet, Salt

  • Cloud Operating Systems: OpenStack Queens/OpenShift 3.10/Google Kubernetes 1.12/Docker 1.13

  • Intimately familiar with VMware, VirtualBox, KVM and LXC, Docker/Containers, Linux Bridge, OVS, DPDK, SR-IOV

  • Automate and continuous delivery of applications, container, security, compliance, infrastructure using tools such as Jenkins and Ansible

  • Expert in Scalable & Redundant Network Storage Files Systems: CEPH, S3, GPFS and GlusterFS

  • Core IP Routing and Switching Protocols: IPv4/6, BGP, IS-IS, OSPF, HSRP, Segment Routing, VRRP, MPLS, VPLS, GLBP including Multicast : IGMP v2, v3, PIM SM, SSM

  • Advanced IP networking and systems building, troubleshooting and root-cause analysis

  • SDN/NFV Controllers and SD-WAN (Software Defined Network/WAN).

  • Systems Administration of Unix and Embedded Development platform

  • Policing and Traffic Shaping of IP networks (QoS)

  • Layer 2- Layer 7 Protocols/Applications Analysis and Testing

  • Proficient with Servers, Routers, Switches, Load Balancers, WAN optimization, Firewall and Intrusion Prevention System (IPS) Configurations

  • Systems, Network Architecture, Design, Testing, Implementation, and Operations

  • Proficient in coding, compiling open source tools from various FreeBSD ports, and Linux repositories

  • AAA Security Protocols: RADIUS, TACACS. IPSec, IEEE 802.1X Client Authentication

  • Security monitoring, hardening, penetration testing, vulnerability assessment and security forensics.

  • Well versed with IP and security monitoring tools, analytics and Deep Packet Inspection (DPI), Intrusion Prevention Systems (IPS)

  • Conformance and Benchmark testing of CPE, Access, Edge, Core, Storage and Video Systems

  • Thorough understanding of Standards based documents and proposals: IEEE, ITU-T, ISO, DASHIF, and Internet Standards: W3C and IETF RFCs

Programming Languages and Kernel Development

  • C, C++, C#, Phython, node.js, json, shell scripting

  • Intimately familiar with FreeBSD and Linux Kernel developments, tuning and programing embedded device drivers' concepts and implementation


Bachelor's degree in Computer Science (Master's preferred) or equivalent education with relevant Internet Service Provider (ISP) experience. Minimum of 10+ years related experience.


  • Cisco : Cisco Certified Internetwork Expert CCIE- (Data Center, Service Provider, Security)

  • Juniper : Juniper Network Certified Internetwork Expert JNCIE (Data Center, Service Provider, Security)

  • Redhat : Red Hat Certified Engineer (RHCE), OpenShift (RHCE-OpenShift), OpenStack (RHCE-OpenStack), CEPH (RHCE-CEPH), Ansible (RHCE-Ansible), DevOps (RHCE-DevOps)


Bachelors or Equivalent

Masters or Equivalent

Alternate Location: US-Colorado-Littleton

Requisition # : 203568

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

This position is part of a bargaining unit and represented by a union. Depending upon the applicable collective bargaining agreement under which you may be hired, you may be: (a) required to join the union and pay union dues as a condition of employment; or, (b) required to pay union dues, but not join the union as a condition of employment; or (c) free to chose whether or not to join the union, but if you do join the union you would be obligated to pay union dues.

EEO Statement

We are committed to providing equal employment opportunities to all persons regardless of race, color, ancestry, citizenship, national origin, religion, creed, veteran status, disability, medical condition, genetic characteristic or information, age, sex, 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.

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Principal Architect