About the Position

Senior Full Stack Engineer (React.js / Node.js)

Date published: Aug 12 2026

Location: Halifax / Canada

Job category: Digital

Work model: Hybrid

About the Role

As a Senior Full Stack Engineer, you will make an impact by designing, developing, and delivering modern, scalable, and high-performing web applications using React.js, TypeScript, and Node.js. You will be a valued member of the engineering team and work collaboratively with Product Owners, UX designers, QA teams, architects, and business stakeholders to deliver innovative digital solutions.

Responsibilities

Design, develop, test, and maintain enterprise-grade full-stack web applications using React.js, TypeScript, and Node.js.
Build responsive, reusable, and scalable user interface components that deliver exceptional user experiences.
Develop, maintain, and integrate RESTful and GraphQL APIs to support application and business requirements.
Collaborate with cross-functional teams to analyze requirements, design technical solutions, and deliver high-quality software in Agile environments.
Perform code reviews, troubleshoot complex issues, optimize application performance, and ensure adherence to engineering best practices.

Requirements

7+ years of experience developing modern web applications using React.js, TypeScript, and Node.js.
Strong expertise in React.js, including component-based architecture, state management, and front-end performance optimization.
Hands-on experience developing and integrating RESTful APIs and GraphQL services.
Strong proficiency in JavaScript (ES6+), TypeScript, HTML5, CSS3, and Object-Oriented JavaScript principles.
Experience working with Git version control and modern software development practices.
Strong understanding of software development lifecycle (SDLC) and Agile methodologies.
Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field.

Nice to Have

Experience with GraphQL and Apollo Client.
Experience with cloud platforms such as Microsoft Azure or AWS.
Knowledge of Microservices architecture and distributed systems.
Experience with CI/CD pipelines and DevOps practices.
Familiarity with Redux, Context API, or other modern state management frameworks.
Experience with automated testing frameworks such as Jest, React Testing Library, or Cypress.

We Offer

Competitive salary based on experience and qualifications.
Cognizant’s discretionary annual incentive program, based on performance.
Hybrid work model with flexibility.
Various wellbeing programs to support work-life balance.

About the Company

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 follow us on Twitter.

Additional employment information

Compensation 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.

Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government-issued ID during each interview.

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, state, or local laws.

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.

Benefits that help you thrive and grow

Our benefits program is built with you in mind-so you can enjoy a fulfilling, balanced, and healthy life.

Financial wellbeing

We regularly review market data to ensure compensation reflects the value you bring. Your benefits extend beyond pay and may include retirement plans, financial education, etc.

Physical and mental health

We empower you to prioritize your wellbeing through paid time off, flexible working where possible, healthcare plans, counselling, our Mental Health Allyship program, and more.

Your career, your way

With 350,000+ roles at Cognizant, you’ll have opportunities to explore new technologies, industries, and locations-and build the skills you need to grow your career.

Real-world impact

Think about the biggest brands you rely on. Chances are, they rely on us to help strengthen their business. Here, you’ll turn bold ideas into solutions that improve lives everywhere.

Your path to Cognizant

Here’s what you can expect from our hiring process. Please keep in mind that it may vary by role and location. Explore our FAQs to learn more.

Step 1: Apply to the right opportunity

Find an open role that matches your skills and career goals and show us why you’re the person for the job. Don’t see the right opportunity? Consider joining our Talent Community.

Step 2: Connect with your recruiter

If one of our recruiters sees a fit, they’ll set up a short intro call to learn more about you and how your experiences and skills match the role.

Step 3: Show off your skills

If you and our team would like to continue the process, you’ll interview with our hiring team. Some roles may also require technical assessments and/or client interviews.

Step 4: Decision time

Our team will then review each candidate’s potential to succeed in the role. This step may take some time because we want to find the right fit for both you and us-but you can count on us to keep you updated.

Haven't yet found the right opportunity?

Get the latest updates on job opportunities, recruitment events, and company news-tailored just for you!

Be in the know

We care about your privacy

Thank you, your preferences have been updated.

By clicking "Accept All", you agree to the storing of cookies on your device to give you the most optimal experience using our website. We may also use cookies to enhance performance, analyze site usage, and to personalize your experience.

Manage Preferences

Senior Full Stack Engineer (React.js / Node.js)

Job description