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Added 22 days ago
Senior .NET Application Security Developer
Cognizant
Halifax, NS
$61,000 to $100,000 CAD / year
Full-time
Cognizant is seeking a Senior .NET Application Security Developer within 5-7 years of deep expertise in application security, vulnerability remediation, and secure software development…
Added 22 days ago
Senior .NET Application Security Developer
Cognizant
Halifax, NS
$61,000 to $100,000 CAD / year
Full-time
Cognizant is seeking a Senior .NET Application Security Developer within 5-7 years of deep expertise in application security, vulnerability remediation, and secure software development…
Added 22 days ago
Senior Software Engineer - Cloud Platform & Data Architecture
USA Tech Recruit
Toronto, ON
Full-time
We are looking for a Senior Software Engineer: Cloud Platform & Data Architecture to architect and build the foundational cloud services powering this next-generation platform. This is a…
Added 22 days ago
Senior Software Engineer - Full-Stack & Frontend
USA Tech Recruit
Toronto, ON
Full-time
We are looking for a Senior Software Engineer to own the customer-facing experience of the company's cloud platform. You'll work across frontend and backend systems to build intuitive…
Added 22 days ago
Développeur Senior C# / WPF
Amaris Consulting
Brossard, QC
Full-time
You will be supporting different projects through your expertise as Senior C# / WPF Developer.
Added 20 days ago
Sr Software Developer
Royal Bank of Canada
Toronto, ON
Full-time
We are seeking a Senior Java Developer to design, build, and maintain high-performance applications that facilitate basket trading & handle streaming data within Global Equities business.…
Added 23 days ago
Fullstack .NET Engineer | igaming | Base + Benefits
Pentasia
Toronto, ON
$100,000 to $135,000 CAD / year
Full-time
My client is seeking a highly skilled Senior Full Stack .NET Developer to join a fast-paced technology team responsible for developing and enhancing mission-critical platforms. This role…
Added 23 days ago
Senior Dotnet Developer
Tata Consultancy Services
Toronto, ON
$90,000 to $110,000 CAD / year
Full-time
As a Senior Software Developer, you will design, develop, and implement robust internal applications and platforms while leading technical development initiatives.
Added 25 days ago
Sr Software Developer
RBC
Toronto, ON
Full-time
We are seeking a Senior Java Developer to design, build, and maintain high-performance applications that facilitate basket trading & handle streaming data within Global Equities business.…
Added 24 days ago
Principal Enterprise Architect
RBC
Toronto, ON
Full-time
Minimum of 12 years of experience in Microsoft .NET platform development or Java/Linux development.
Added 21 days ago
Principal Enterprise Architect
Royal Bank of Canada
Toronto, ON
Full-time
Minimum of 12 years of experience in Microsoft .NET platform development or Java/Linux development.
Added 23 days ago
Senior Solution Designer, Information Technology
CIBC Mellon
Toronto, ON · Greater Toronto Area, Canada
Full-time
Reporting to the Director, Solution Design the Senior Solution Designer, will be play a key role in shaping CIBC Mellon’s technology and digital landscape. They will be responsible for…
Added 1 month ago
Senior Fullstack Developer
DATA Communications Management Corp
Richmond Hill, ON
$90,000 to $110,000 CAD / year
Full-time
As a Senior Fullstack Developer, you will take ownership of complex, end-to-end development features across our platform. You'll work across the stack from data models and APIs to the React…
Added 21 days ago
Senior Full Stack Engineer
RBC
Toronto, ON
Full-time
Design, develop, and maintain RESTful APIs and microservices using C# and .NET framework.
Added 21 days ago
Senior Full Stack Engineer
Royal Bank of Canada
Toronto, ON
Full-time
Design, develop, and maintain RESTful APIs and microservices using C# and .NET framework.
Added 21 days ago
Senior Backend Software Developer - Data Integration
Coveo
Montreal, QC
As a senior software developer, you’ll tackle a wide range of technical challenges, from building reusable solutions for data transformation and enrichment to evolving distributed cloud…
Added 23 days ago
Senior .NET Developer – Application Security
Cognizant
Halifax, NS
Full-time
As a Senior .NET Developer, you will make an impact by strengthening the security posture of enterprise applications through vulnerability analysis, remediation, and secure software…
Added 23 days ago
Senior .NET Developer – Application Security
Cognizant
Halifax, NS
Full-time
As a Senior .NET Developer, you will make an impact by strengthening the security posture of enterprise applications through vulnerability analysis, remediation, and secure software…
Added 23 days ago
Senior .NET Developer – Application Security
Cognizant
Halifax, NS
Full-time
As a Senior .NET Developer, you will make an impact by strengthening the security posture of enterprise applications through vulnerability analysis, remediation, and secure software…
Added 23 days ago
Staff Engineer - Backend & Architecture
MapsPeople
Toronto, ON
Full-time
This is a senior technical leadership role for an engineer who thinks beyond individual services and features. You will help define our backend architecture, drive technical standards…
Added 21 days ago
Sr. DevOps Engineer
Borrowell
Remote, Canada
$100,000 to $150,000 CAD / year
Full-time · Remote
We are seeking a Senior DevOps Engineer to design, automate, and manage the mission-critical cloud infrastructure supporting our marketplace. As a key member of our DevOps team, you will…
Added 21 days ago
Nvidia Omniverse Developer
Eclipse Automation
Cambridge, ON
The Senior NVIDIA Omniverse Developer will work under the Omniverse lead developer to design, build, test, and scale Omniverse-based tools for industrial automation. This person will be…
Added 21 days ago
Senior Full-Stack Developer / développeurs(-euses) Full-Stack senior
Flinks
Remote, Canada
Full-time · Remote
We're hiring Senior Full-Stack Developers to build and own the client-facing product experiences at Flinks. You'll work across the Angular/TypeScript front end and the C#/.NET back end,…
Added 24 days ago
Senior Technical Architect, Application Development & Support
Canadian Standards Association
Toronto, ON
Full-time
Acts as lead developer and technical design authority for applications in scope, setting coding standards, design patterns, branching strategy, and definition of done for internal and…
Added 21 days ago
Senior Software Engineer, Backend
Tilt Finance
Remote, Canada
$190,000 to $230,000 CAD / year
Full-time · Remote
The Opportunity: Senior Software Engineer, Backend

Cognizant

Senior .NET Application Security Developer

Halifax, NS, Canada

Pay: $61,000 to $100,000 CAD / year
Job type: Full-time
Apply by: Oct 2, 2026
Posting language: English
Posted: Sep 2, 2026

Apply About employer

Applications open in a new tab.

Original job description

Cognizant is seeking a Senior .NET Application Security Developer within 5-7 years of deep expertise in application security, vulnerability remediation, and secure software development practices. This role is ideal for a seasoned .NET professional who can independently analyze, prioritize, and remediate security vulnerabilities across enterprise applications with minimal onboarding support.

The ideal candidate will possess extensive hands-on experience reviewing security scan findings, implementing secure coding standards, and collaborating with cross-functional teams to improve the overall security posture of applications. From Day 1, the candidate should be capable of evaluating security reports and implementing effective remediation strategies across the software development lifecycle.

Key Responsibilities

Analyze and remediate application security vulnerabilities identified through SAST, DAST, SCA, and penetration testing assessments.
Review and address findings generated by security tools such as Checkmarx, Fortify, AppScan, SonarQube, and similar platforms.
Implement secure coding practices following OWASP Top 10 standards and industry best practices.
Perform root cause analysis of security vulnerabilities and provide sustainable remediation solutions.
Collaborate with architects, developers, DevOps engineers, and security stakeholders to ensure timely resolution of security findings.
Support Secure Software Development Lifecycle (SSDLC) initiatives and maintain compliance with security requirements.
Participate in peer code reviews with a focus on security, maintainability, and performance.
Integrate and improve automated security testing and remediation capabilities within CI/CD pipelines.
Provide technical guidance and mentorship to development teams on secure software design and vulnerability prevention.
Assist in establishing application security standards and promoting security awareness across project teams.

Required Qualifications

Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field, or equivalent professional experience.
Strong experience developing enterprise applications using Microsoft .NET Framework and/or .NET Core/.NET 8+.
Extensive experience identifying and remediating application security vulnerabilities.
Strong understanding of:

OWASP Top 10
Secure Coding Practices
Authentication and Authorization
Session Management
Input Validation
Encryption and Data Protection

Hands-on experience with security scanning tools such as:

Checkmarx
Fortify
SonarQube
AppScan
Veracode or similar platforms

Experience analyzing findings from:

Static Application Security Testing (SAST)
Dynamic Application Security Testing (DAST)
Software Composition Analysis (SCA)
Penetration Testing Reports

Experience working in Agile software development environments.
Strong troubleshooting, analytical, and problem-solving skills.
Excellent verbal and written communication skills.

Work Authorization

Candidate must be legally authorized to work in Canada without the need for employer sponsorship now or in the future.

Why Apply?

At Cognizant, you will work alongside some of the world's leading technology experts to solve complex business challenges while helping organizations strengthen their security posture. We are committed to fostering an inclusive environment where innovation, collaboration, and professional growth are encouraged.

We're excited to meet people who share our mission and can make an impact in a variety of ways. Don't hesitate to apply, even if you only meet the minimum requirements listed. Consider your transferable experiences and unique skills that make you stand out as someone who can bring new and exciting perspectives to this role.

Salary And Other Compensation

The annual salary for this position is between CAD $61,000 and CAD $100,000, 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, and Life Insurance
Paid Holidays plus Paid Time Off
401(k) Plan and Company Contributions
Long-Term and Short-Term Disability Coverage
Paid Parental Leave
Employee Stock Purchase Plan

Application Deadline

Applications for this position will be accepted until 9/17/2026. Candidates are encouraged to apply as early as possible, as the posting may close sooner if a sufficient pool of qualified applicants is identified.

Disclaimer

The salary, other compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.

Please note: Some roles may require in-person interviews at Cognizant offices or client locations, depending on project or client requirements.

Cognizant is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity, sexual orientation, national origin, disability, veteran status, or any other characteristic protected by applicable law.

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More about this job

Responsibilities

Analyze and remediate application security vulnerabilities identified through various scanning tools and penetration testing. Collaborate with cross-functional teams to implement secure coding standards and improve the overall security posture of enterprise applications.

Requirements

Requires a Bachelor's degree and 5-7 years of expertise in .NET development and application security. Candidates must be proficient in OWASP standards and experienced with security tools like Checkmarx, Fortify, and SonarQube.

Skills

Application Security
Vulnerability Remediation
.NET Framework
.NET Core
Secure Coding
OWASP Top 10
SAST
DAST
SCA
Checkmarx
Fortify
SonarQube
AppScan
Veracode
CI/CD Pipelines
SSDLC

Benefits

Medical Insurance
Dental Insurance
Vision Insurance
Life Insurance
Paid Holidays
Paid Time Off
401(k) Plan
Company Contributions
Long-Term Disability Coverage
Short-Term Disability Coverage
Paid Parental Leave
Employee Stock Purchase Plan

Visa sponsorship

Not detected in the job text

Keywords

Application Security
Vulnerability Remediation
.NET Framework
.NET Core
.NET 8+
OWASP Top 10
SAST
DAST
SCA
Penetration Testing
Checkmarx
Fortify
AppScan
SonarQube
Veracode
SSDLC
CI/CD
Agile
Authentication
Authorization
Session Management
Input Validation
Encryption
Data Protection
Enterprise Applications
Secure Software Development
Root Cause Analysis
Code Review
IT Services
Consulting

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