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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

Do you love applying functional programming to manipulate data in unique ways? Do you like pushing the limits of what code can do? Do you enjoy helping pull a team of other developers together to solve challenging problems that improve the safety of the overall Internet? CenturyLink's Black Lotus Labs is looking for a talented lead software engineer to help build software that is used to find malicious attackers, botnets, and other types of nefarious activity on the Internet.

The mission of this team is to help find and disrupt "bad guys" on the Internet. One of the ways we do this is by leveraging our unique visibility as a very large carrier to track botnets in a big data way. We deal with data at a petabyte scale, and over 100s of billions of records a day. The development part of this team helps write code that computes additional data, tracks reputation of malicious hosts, optimizes underlying execution of distributed queries, acquires and provides additional datasets to leverage, and creates new and unique tools to be used for finding malicious actors on the Internet

Job Description

We primarily write in Scala or Python, and leverage several modern frameworks and systems like Apache Spark, Kafka, HBase, Redis, Akka, Elasticsearch, Gitlab, Jenkins, etc. As one of our software engineers, some of the things you would do on a daily basis are:

  • Write software that solves complex problems and supports millions of transactions a second

  • Engineer applications that facilitate faster access to the data

  • Help lead software development across multiple projects

  • Provide peer code reviews and mentorship

  • Act as the subject matter expert for various code bases and projects the team supports

  • Write and build automated tests to ensure end-to-end functionality


Ideally we're looking for someone that has a strong background in software engineering that exhibits:

  • Extensive experience and prior work in at least two of the three languages: Java, Scala, or Python

  • Experience in at least two out of the three programming paradigms: imperative, object oriented, functional

  • Experience in DevOps, unit testing, test driven development, and continuous integration

  • A strong desire to learn and play with new technologies and techniques

  • Excellent communication and leadership skills

  • Experience with iterative development methodologies and practices

This team works in a pretty unique space, and we don't expect any of the following, but candidates that have one or more raise to the top of the stack:

  • Experience with programming for distributed architectures, ideally, shared nothing architectures like Hadoop

  • Experience with Apache Spark or other distributed computing frameworks

  • Experience with reactive programming

  • Broad information security knowledge

  • Experience with the following SCM tools: Jenkins, Maven, Git, Subversion, Nexus

  • In depth knowledge of UNIX / Linux based systems and/or prior Systems Administration experience

  • Knowledge of Internet scale networking, including protocols, topologies, and security impacts

Alternate Location: US-Colorado-Broomfield

Requisition # : 215762

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.