Application Security Engineer

About TCS

TCS is an IT services, consulting, and business solutions organization that has been partnering with many of the world’s largest businesses in their transformation journeys for over 55 years. Its consulting‑led, cognitive‑powered portfolio of business, technology, and engineering services and solutions is delivered through its unique Location Independent Agile delivery model, recognized as a benchmark of excellence in software development. A part of the Tata group, India's largest multinational business group, TCS operates in 55 countries and employs over 607,000 highly skilled individuals, including more than 10,000 in Canada.

Equal Opportunity & Inclusion

TCS is an equal opportunity employer, and embraces diversity in race, nationality, ethnicity, gender, age, physical ability, neurodiversity, and sexual orientation, to create a workforce that reflects the societies we operate in. Our continued commitment to Culture and Diversity is reflected in our people stories across our workforce and implemented through equitable workplace policies and processes.

Additional Information

Note : TCS does not use artificial intelligence tools for candidate screening or evaluation.

Tata Consultancy Services Canada Inc. is committed to meeting the accessibility needs of all individuals in accordance with the Accessibility for Ontarians with Disabilities Act (AODA) and the Ontario Human Rights Code (OHRC). Should you require accommodations during the recruitment and selection process, please inform Human Resources.

Job Summary

The Application Security Engineer will perform end‑to‑end penetration testing on web applications and APIs to identify security vulnerabilities, assess risk, and drive remediation. The role includes planning and executing manual and automated tests, producing clear and actionable reports, collaborating with engineering teams to fix issues, and ensuring all findings are logged and tracked through closure in the vulnerability management system.

Key Responsibilities

Penetration Testing & Assessment

• Plan, scope, and execute web application and API penetration tests across SDLC phases (pre‑release and production).
• Perform recon, threat modeling, and attack surface mapping to prioritize test coverage.
• Identify and validate vulnerabilities including authentication / authorization flaws, injection, XSS, SSRF, deserialization, IDOR, insecure direct object references, logic bugs, misconfigurations, and sensitive data exposure.
• Test API endpoints (REST / Graph QL) for input validation, rate limiting, broken object‑level authorization (BOLA), and schema / serialization issues.
• Use both automated scanning and manual exploitation to confirm impact, reproducibility, and exploit chains.

Reporting & Remediation Support

Tooling & Automation

Required Qualifications & Skills

Preferred Qualifications

Salary Range

CA$100,000 – CA$150,000 per year.

Senior Level

Employment Type

Job Function

Industries

Application Process

Applicants that meet the qualifications for this position will be contacted within a 2‑week period. We invite you to continue to apply for other opportunities that match your profile.

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