MongoDB Developer

MongoDB Developer

About the role

As a Developer specializing in MongoDB (NoSQL), Redis, ElasticSearch, NodeJS, and GenAI basics, you will make an impact by designing and implementing scalable enterprise applications that enhance customer experiences and support data-driven decisions across the organization. You will be a valued member of our engineering team and work collaboratively with cross-functional teams to deliver secure, high-performance services.

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 4 days a week in a client or Cognizant office in Toronto, Ontario. 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’re engaged in, as well as business and client requirements. Rest assured; we will always be clear about role expectations.

In this role, you will:

• Design and implement robust application components that integrate GenAI capabilities with NoSQL data stores to deliver responsive and reliable business features.

• Collaborate with product analysts and architects to translate user stories into technical designs using MongoDB patterns aligned to enterprise standards.

• Implement secure data access patterns that protect sensitive information while enabling responsible GenAI-based insights for internal and external stakeholders.

• Develop automated unit and integration tests that validate GenAI prompt handling, NoSQL schema design, and data consistency under realistic scenarios.

• Troubleshoot complex production incidents by analyzing logs, queries, and GenAI responses to rapidly identify root causes and define preventive measures.

What you need to have to be considered

• 5+ years of professional software development experience with end-to-end ownership of features from design through deployment and support.

• Advanced proficiency in NodeJS or a comparable modern programming language to build modular services interfacing with GenAI endpoints and NoSQL repositories.

• Hands-on experience with MongoDB, Redis, and ElasticSearch, including schema design that supports high-throughput, enterprise-scale applications.

• Strong working knowledge of GenAI basics, including prompt construction, model selection, and evaluation of generated outputs for quality and bias.

• Solid understanding of distributed systems concepts – consistency, partitioning, and replication – when designing NoSQL-backed services.

These will help you stand out

• Practical familiarity with cloud-native development practices such as containerization, continuous integration, and automated deployment.

• Experience with automated testing frameworks and version control systems to maintain high code quality and reliable release cycles.

• Strong debugging and performance tuning skills to optimize queries, indexes, and GenAI calls for predictable latency in production environments.

• Knowledge of data privacy principles and ethical AI practices to design solutions that respect user rights and meet compliance requirements.

• Effective communication skills to clearly explain GenAI and NoSQL design choices to non-technical partners and stakeholders.

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. Think about your transferable experiences and unique skills that make you stand out as someone who can bring new and exciting things to this role.

What we offer

• The chance to work with impact. Here, you’re empowered to bring your biggest thinking to help our company and clients improve everyday life.
• Ownership over your career. Stay at the top of your game through our award-winning learning and development ecosystem. And when your ambitions change or we offer new opportunities, we help you pivot by providing reskilling, on-the-job learning and guidance to find new roles that might be a better fit.
• The opportunity to thrive on a high caliber team with heart. We celebrate each other’s experiences and perspectives and promote a sense of belonging through our affinity groups and diversity and inclusion initiatives.
• A comprehensive total rewards package, including a competitive salary and a pension plan with matching contributions.
• Flexible health and financial benefits to support you and your eligible dependents—from day one.
• True work-life balance. Be at your best through paid time off, flexible work arrangements, volunteering opportunities, social events, and so much more.  

About us
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, building the bridge 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, realize tangible returns and keep global enterprises ahead in a fast-changing world. See how at www.cognizant.com or @cognizant.

Other employment-related information
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.

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.

Language requirements vary depending on roles, but 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.