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Sr. Software Engineer B3

00069185252


Job Summary

Sr Software Engineer B3 role focuses on designing and building secure scalable and resilient mobile and backend applications using React Native Java and JavaScript within a hybrid work model The role involves collaborating with cross functional teams to deliver high quality features that improve user experience and align with business goals while ensuring maintainable code and continuous improvement across the software lifecycle


Responsibilities

  • Design and develop scalable React Native mobile applications that deliver a consistent and intuitive user experience across multiple device platforms and screen sizes
  • Implement robust Java based backend services that ensure secure efficient and reliable processing of business logic and data workflows in alignment with enterprise standards
  • Build reusable JavaScript components and utilities that improve development efficiency maintainability and consistency across multiple projects and codebases
  • Collaborate closely with product managers designers and fellow engineers to refine technical requirements clarify use cases and align implementation details with business outcomes
  • Review and refactor existing code to improve performance reliability and readability while maintaining strict adherence to coding standards and engineering best practices
  • Integrate mobile and backend systems with internal and external application programming interfaces to ensure accurate secure and efficient data exchange
  • Develop and maintain automated unit integration and functional tests that increase coverage reduce regressions and support confident delivery of new features
  • Troubleshoot and resolve complex production issues by analyzing logs telemetry and user feedback to identify root causes and implement sustainable fixes
  • Optimize application performance by profiling critical paths reducing unnecessary network calls and tuning database and caching strategies for responsive user experiences
  • Contribute to technical design discussions by proposing pragmatic solutions that balance short term delivery needs with long term system scalability and resilience
  • Mentor junior engineers by providing constructive feedback pairing on complex tasks and sharing practical guidance on React Native Java and JavaScript engineering practices
  • Document system architecture key design decisions and operational runbooks in a clear and concise manner to support knowledge sharing and efficient incident response
  • Collaborate within the hybrid work model by using digital collaboration tools to maintain clear communication alignment and transparency across distributed teams
  • Drive continuous improvement initiatives by identifying process gaps suggesting automation opportunities and supporting adoption of modern engineering tools and practices
  • Ensure all deliverables adhere to security compliance and data privacy guidelines to protect users and support the company reputation in global markets


Qualifications

  • Exhibit strong hands on experience in building and shipping complex React Native applications including state management navigation and offline capabilities
  • Demonstrate deep proficiency in Java language features object oriented design patterns and development of secure and performant backend services
  • Apply solid JavaScript fundamentals including asynchronous programming modular architectures and tooling to deliver maintainable and testable code
  • Utilize practical knowledge of software engineering practices such as version control branching strategies code reviews and continuous integration in daily work
  • Employ working experience with relational or document databases and query optimization techniques to design efficient and reliable data access layers
  • Display familiarity with Agile or iterative delivery methods by participating in planning estimation daily discussions and continuous feedback cycles
  • Leverage exposure to cloud based environments and containerization concepts to support scalable deployment of mobile and backend services even at a foundational level
  • Value strong communication and collaboration skills to work effectively in a hybrid setup and engage constructively with peers stakeholders and partner teams


Certifications Required

Oracle Certified Professional Java Programmer or equivalent Java certification preferred React Native or JavaScript framework certification is an advantage

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.

Your path to Cognizant

Wondering what to expect after you apply? Here’s a peek at our recruitment process—and keep in mind that not all candidates advance through every step and the process may vary depending on your role and location.

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Step 1: Application

Find an open role that aligns with your skills and career goals and show us why you’re the person for the job. Consider joining our Talent Community if you don’t find the right opportunity.

Phone Call Midnight Blue RGB

Step 2: Recruiter call

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

Step 3: Interview(s)

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

Step 4: Final decision

Our hiring team will then review each candidates’ potential to succeed in the role. This process may take some time because we want to get it right—but you can count on us to keep you updated.

Benefits that help you thrive and grow

Our teams achieve incredible things when they feel fully supported. That’s why our benefits program is built around the diverse needs of our people—so they can enjoy a fulfilling, balanced and healthy life.

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Financial wellbeing

Financial wellbeing

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

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Physical and mental wellbeing

Physical and mental wellbeing

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
Your career, your way

Your career, your way

With 90% of our associates building skills through GenAI training, job shadowing, industry certifications and more, you have everything you need to build a full career.

Professionals
Real-world impact

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.

02.2026 Superlearner Debashish
"Cognizant has one of the best learning ecosystems you can ask for. From sponsored certifications to training platforms to mentorship, we have all that we need to grow.”
Debashish Mishra SAP MM Developer
Laura Reynaud
"Cognizant offers me more than a job; it offers a community. We support each other, collaborate across borders and celebrate wins together. If you’re looking for a culture that values flexibility, diversity and growth, this is the place to be."
Laura Reynaud Lead Counsel
Lucas Hoffman
“I’ve had the chance to work on impactful projects and shadow colleagues, all while getting involved in internal initiatives. The world is your oyster at Cognizant—you just need to take advantage of it!”
Lucas Hoffman Consultant
Sujatha’S Journey Main
“When I first joined, I was quiet and hesitant to share my thoughts. The leadership programs and the mentoring I’ve received have helped me find my voice and grow as a leader.”
Sujatha Gopalakrishnan Portfolio Delivery Lead
Paulo Miguel Epili Main
"Nobody here says ‘that’s not my job.’ People just help. That’s the entrepreneurial culture that makes me stay at Cognizant.”
Paulo Miguel Epili Sr. Process Executive

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