Practice - CIS - Cloud, Infrastructure, and Security Services
About Cloud Infrastructure & Security Services: Cognizant’s Cloud, Infrastructure, and Security Services Practice (CIS), is all about embracing digital transformation by driving core modernization holistically across layers. We help customers transform infrastructure and workplace to meet the rapidly evolving needs of the digital era. Our holistic approach delivers key results for our customers by achieving cloud driven modernization and workplace and operational transformation to run the business in a secure environment.
Job Summary
We are seeking a Senior Offensive Security Engineer to support advanced penetration testing, red team operations, and custom security tool development initiatives. This role combines offensive security expertise with strong software engineering capabilities to identify vulnerabilities, simulate real-world attack scenarios, and develop automation solutions that enhance enterprise security testing. The ideal candidate will have hands-on experience in penetration testing, red teaming, exploit research, and security tooling, with the ability to both assess and improve organizational security posture through custom-built solutions.
*Please note, this role is not able to offer visa transfer or sponsorship now or in the future*
In this role, you will:
· Design and develop custom security tools, automation frameworks, and scripts to support penetration testing and vulnerability assessment activities.
· Conduct comprehensive penetration tests against web applications, APIs, cloud environments, networks, and enterprise infrastructure.
· Participate in red team engagements that simulate realistic adversary behavior and attack scenarios.
· Identify, validate, and document vulnerabilities, attack paths, and security weaknesses with actionable remediation recommendations.
· Build integrations between security tools and enterprise platforms to improve testing efficiency and automation capabilities.
· Research emerging attack techniques, offensive security methodologies, and exploit development opportunities.
· Develop proof-of-concept exploits, attack simulations, and offensive testing frameworks where appropriate.
· Collaborate with development, infrastructure, and security teams to address identified vulnerabilities and improve security controls.
· Maintain technical documentation, testing methodologies, tooling standards, and security assessment reports.
· Contribute to continuous improvement of offensive security capabilities, red team operations, and security engineering practices.
What you need to have to be considered
· 5-8 years of experience in Penetration Testing, Red Teaming, Security Engineering, or Software Development with a strong security focus.
· Strong programming and scripting expertise in languages such as Python, Go, Java, C#, PowerShell, or similar technologies.
· Hands-on experience conducting penetration testing using industry-standard methodologies and frameworks.
· Experience participating in red team engagements and adversary simulation exercises.
· Proficiency with offensive security tools such as Burp Suite, Metasploit, Nmap, Cobalt Strike, BloodHound, or equivalent platforms.
· Strong understanding of web application security, API security, cloud security, network security, and vulnerability assessment techniques.
· Experience developing custom security tooling, automation frameworks, and offensive testing solutions.
· Familiarity with security frameworks such as MITRE ATT&CK, OWASP Top 10, and penetration testing best practices.
· Strong analytical, troubleshooting, communication, and documentation skills.
· Security certifications such as OSCP, CRTO, PNPT, GPEN, CEH, or equivalent are highly desirable.
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Applications will be accepted until 8 Sep 2026.
Salary and Other Compensation:
The annual salary for this position is between $[105,500 - 124,000] depending on experience and other qualifications of the successful candidate.
This position is also eligible for Cognizant’s discretionary annual incentive program, based on performance and subject to the terms of Cognizant’s applicable plans.
Benefits: Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:
· Medical/Dental/Vision/Life Insurance
· Paid holidays plus Paid Time Off
· Long-term/Short-term Disability
· Paid Parental Leave
About Cognizant
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization’s unique context into technology systems that amplify human potential, drive tangible outcomes and keep global enterprises ahead in a fast-changing world. See how at cognizant.ai or @cognizant.
Things to know before you apply
- Work authorization: Cognizant will only consider applicants for this position who are legally authorized to work in Canada without requiring employer sponsorship, now or at any time in the future.
- Accommodations: If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] with your request and contact information.
- AI in hiring: We use artificial intelligence (AI) tools to help us screen and assess applications more efficiently. Our team performs additional human review and ultimately decides who moves forward in our hiring process.
- Open position: Unless otherwise stated, this job posting is for an open position on our team.
- Language proficiency: We ask that all candidates have basic English proficiency for company-wide communications purposes. For roles based in Quebec, professional English proficiency is required, as you’ll deliver services to and collaborate with stakeholders outside the province who may not speak French.
- Inclusion: Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, provincial or local laws.
