EMPLOYER: Communications Security Establishment (CSE)



Share this page


Reference number: 3521-CSE(OC)2020
Closing Date: 2021-03-31    


Start date is not accurate. It's to be determined depending on how long the security check/clearance takes.

About the Job

Communications Security Establishment (CSE) is Canada's national cryptologic agency. Unique within Canada's security and intelligence community, CSE employs code-makers, codebreakers, and secure system creators to provide the Government of Canada with information technology security (IT Security) and foreign signals intelligence (SIGINT) services. CSE is the national hub for cyber operations to defend Canada and advance national interests, and provides technical and operational assistance to federal law enforcement and security agencies.

We are currently looking for Cryptanalysts and Crypto-Scientists to work in a dynamic and innovative operational environment. As a Cryptanalysts/Crypto-Scientist at CSE, you will be part of a team applying your analytical and problem-solving skills to a variety of problems in support of the SIGINT and Cyber missions. This means you could be working to defeat encryption or working to design and evaluate cryptographic algorithms and protocols. You will learn and apply advanced cryptanalytic techniques and contribute to the development of innovative tools, new techniques, and recommendations for a wide variety of clients both within CSE and from other organizations.

Cryptanalysts and Crypto-Scientists at CSE perform one or more of the following functions:

  • Operations, developing and maintaining decryption capabilities and using them to support Government of Canada Intelligence and Cyber Defense requirements.
  • Cryptologic research, design, develop, assess, and attack cryptographic algorithms and protocols.

We are looking for passionate people from a variety of backgrounds who:

  • have a blend of math and software development skills;
  • have knowledge of and an interest in learning more about cryptography and cryptographic protocols;
  • enjoy reading deep technical documents, like standards and protocol specifications or mathematics papers;
  • are creative and critical thinker who love solving problems;
  • are self-motivated, tenacious and do not give up on a problem at the first sign of adversity;
  • are team players and want to be a part of a great team that delivers results for the Government of Canada and Canadians.


Salaries range from $78,001.00 to 105,060.00, depending on the level. These positions are currently eligible for a market allowance ranging from $8,366.36 to $12,103.35.



All jobs are in Ottawa, Ontario. This selection process will be used to staff positions within the Edward Drake Building (1929 Ogilvie Road). This location meets current accessibility standards.

Language Requirements

English Essential

Required Qualifications

You must clearly demonstrate in your application how you meet these required qualifications:


You must have either one of the following:

  • A University degree in a field related to the position, such as (but not limited to): Computer Science, Engineering (e.g. Computer, Software, Electrical) with a strong math background, Mathematics with programming courses
  • An acceptable combination of education (i.e. college diploma, professional certification) in a field related to the position (as above) and relevant experience.

The educational program must be recognized in Canada and you must be able to provide proof of education credentials. Students graduating within the next twelve (12) months are eligible to apply.


  • Recent* experience developing software using a language such as C, C++, Java, Perl, or Python.
  • Recent* experience applying analytical skills on difficult problems.
  • Recent* experience communicating the results of your work to various stakeholders (e.g. peers, supervisors).
  • Knowledge in one or more of the following: algebra, discrete math, computational number theory, probability and statistics, combinatorics, or cryptography.

*For the purposes of this selection process “Recent” is defined as experience having normally been acquired within the last five (5) years.


Technical competencies

  1. Advanced Knowledge of Mathematics

Knowing, developing, and applying mathematical theories, principles, concepts, techniques, and tools

  1. Knowledge of Cryptanalysis

Developing and applying cryptanalytic theories, principles, and concepts to solve problems.

  1. Application Development

Knowledge and ability to design, define, construct, enhance, support, and maintain application software on one or more platforms.

  1. In addition, UNI 08 candidates must successfully demonstrate one (1) technical asset competency and UNI 09 candidates must successfully demonstrate two (2) technical asset competencies. Technical asset competencies are found under “Asset Qualifications”.

Behavioural competencies

  1. Interactive Communication

Communicating in a compelling, honest, persuasive, effective, and articulate manner, thinking about who you need to communicate with, ensuring the message is clear, understood & consistent with CSE objectives.

  1. Cognitive Thinking Skills

Responding to challenges with innovative solutions, products, or services by questioning conventional means, using intuition, experimentation & fresh perspectives; understanding, analyzing, synthesizing and relating complex information and abstract variables.

  1. Service

Identifies & responds to current & future client needs; provides service that meets or exceeds clients’ expectations.

  1. Working in a Team

Demonstrating effective interpersonal skills & working cooperatively and effectively within & across organizational units to achieve common goals.

Leadership competencies

  1. Achieving Results

Deliver on commitments through actions that reflect personal accountability, sound judgement, decisiveness & business acumen.

  1. Collaboration

Build relationships with traditional & non-traditional partners & stakeholders to develop solutions that reflect the interests of the organization.

  1. Integrity, Respect & Awareness

Create & promote a culture of integrity, transparency, fairness & respect. Recognize one’s own areas of personal & professional strength as well as areas for development & is committed to continuous learning to enhance self-awareness.


Who is eligible:

You must be a Canadian citizen, eligible for Top Secret security clearance, and be prepared to comply with CSE security policies and standards.

Security Requirements:

You must not have a criminal record. The selection process includes a security interview, polygraph exam, psychological assessment, and a ten-year background investigation, including a credit check and financial check.

Asset Qualifications

You should clearly demonstrate in your application any specialized expertise that apply to you, as it will be used to determine best addition within CSE.


  • Graduate Degrees (Master’s or PhD) in Mathematics or Computer Science

Specialized Expertise

  • Experience with mathematical programming, including use of C, C++ or Python or software packages such as Sage, Maple, Mathematica
  • Experience with network protocols, and protocol analysis tools such as Wireshark
  • Demonstrated interest in cyber security;
  • Experience in Software Reverse Engineering;
  • Demonstrated interest in post quantum cryptography and or quantum information theory;


Candidates may be assessed on one or more of the following asset competencies:

Technical competencies

  1. Knowledge of Parallel Programming

Understands and applies general concepts linked to parallel programming.

  1. Research

Understanding what information is needed, how to locate and collect the data from appropriate sources and analyze it to make recommendations and prepare policies.

  1. Network Analysis

Applying understanding of networks to identify, develop and implement network exploitation solutions.

  1. Signals / Protocol Analysis

Applying understanding of electronics and telecommunications systems to identify and resolve problematic signals and protocols from analog and digital data.

How to Apply

For additional information and to apply go to:

START DATE: 06/01/2022

Let us know if you are interested in this position. Complete this short form and we will follow up with you promptly.