Senior Full Stack Developer (Node.js, React.js, GraphQL)

Cognizant; Halifax; Hybrid; CAD 90,000 - 100,000; Full time

Benefits offered by this job

Hybrid work model

Discretionary annual incentive program

Job summary

Cognizant in Halifax, Canada is seeking a Senior Full Stack Developer to design, build, and optimize scalable web applications and APIs using Node.js and React.js. You will collaborate with architects, product owners, and UX designers to deliver high-quality digital solutions.

The role emphasizes GraphQL API design and performance optimization, with a hybrid work model of 2-3 days per week in the Cognizant office. A strong foundation in Agile development is essential.

Qualifications

• Strong hands-on experience developing backend applications with Node.js.
• Proven experience building modern frontend applications using React.js.
• Experience designing and implementing GraphQL APIs and schema development.
• Solid understanding of RESTful services, API integration, and web application architecture.
• Experience with asynchronous programming, performance optimization, and application troubleshooting.
• Strong problem‑solving skills and ability to work in Agile development environments.
• Bachelor's degree in Computer Science, Engineering, or related field, or equivalent practical experience.

Responsibilities

• Design, develop, and maintain scalable backend services and APIs using Node.js.
• Build responsive and user-friendly web applications using React.js.
• Develop and consume GraphQL APIs while ensuring performance, security, and maintainability.
• Collaborate with cross-functional teams to translate business requirements into technical solutions.
• Optimize application performance, troubleshoot production issues, and drive continuous improvement initiatives.

Skills

Node.js

React.js

GraphQL

RESTful APIs

Asynchronous programming

Agile development

Education

Bachelor's degree in Computer Science, Engineering, or related field

Tools

DataLoader

CI/CD pipelines

DevOps practices

TypeScript

AWS

Azure

Google Cloud Platform

Job description

About The Role

As a Senior Full Stack Developer, you will make an impact by designing, developing, and enhancing scalable web applications and APIs using modern frontend and backend technologies. You will be a valued member of the engineering team and collaborate closely with architects, product owners, UX designers, and fellow developers to deliver high-quality digital solutions.

In This Role, You Will

• Design, develop, and maintain scalable backend services and APIs using Node.js.
• Build responsive and user‑friendly web applications using React.js.
• Develop and consume GraphQL APIs while ensuring performance, security, and maintainability.
• Collaborate with cross-functional teams to translate business requirements into technical solutions.
• Optimize application performance, troubleshoot production issues, and drive continuous improvement initiatives.

Work model

We believe hybrid work is the way forward as we strive to provide flexibility wherever possible. Based on this role's business requirements, this is a hybrid position requiring 2-3 days per week in a Cognizant office. Regardless of your working arrangement, we are here to support a healthy work-life balance through our various wellbeing programs. The working arrangements for this role are accurate as of the date of posting. This may change based on the project you are engaged in, as well as business and client requirements. Rest assured; we will always be clear about role expectations.

What You Need To Have To Be Considered

• Strong hands‑on experience developing backend applications with Node.js.
• Proven experience building modern frontend applications using React.js.
• Experience designing and implementing GraphQL APIs and schema development.
• Solid understanding of RESTful services, API integration, and web application architecture.
• Experience with asynchronous programming, performance optimization, and application troubleshooting.
• Strong problem‑solving skills and ability to work in Agile development environments.
• Bachelor's degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience.

These will help you stand out

• Experience working with microservices‑based architectures.
• Knowledge of GraphQL performance optimization techniques, including DataLoader and query optimization.
• Experience with cloud platforms such as AWS, Azure, or Google Cloud Platform.
• Familiarity with CI/CD pipelines, automated testing, and DevOps practices.
• Experience with TypeScript and modern frontend development tools.

Compensation

The annual salary for this position ranges from $90,000 to $100,000, depending on experience and qualifications. This role is also eligible for Cognizant's discretionary annual incentive program, subject to performance and applicable plan terms.

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.