Skip to main content

Senior Software Engineer – Java Full Stack

00068983831

Senior Software Engineer – Java Full Stack

We are seeking a Senior Software Engineer to design and build resilient enterprise services and web applications in a hybrid work environment. This role focuses on developing secure, scalable solutions using Java, Spring Boot, JavaScript, SQL, and AWS. The ideal candidate will collaborate with cross-functional teams to enhance cards and payments processing, optimize data flows, and improve customer and business partner experiences across the platform lifecycle.

Key Responsibilities

  • Design and develop robust backend services using Java and Spring Boot to support high-volume transaction processing and integrations
  • Build clean, maintainable, and testable APIs and microservices following coding best practices
  • Develop and optimize SQL / PL-SQL queries in MySQL to ensure performance, data integrity, and efficiency
  • Create responsive and intuitive frontend components using JavaScript for business and operations workflows
  • Configure and leverage AWS services (compute, storage, database, messaging) for scalable and cost-efficient deployments
  • Develop automated unit, integration, and component tests and support CI/CD pipelines
  • Participate in code reviews and technical discussions to ensure engineering standards and continuous improvement
  • Troubleshoot production issues, perform root cause analysis, and implement preventive solutions
  • Collaborate with product owners, business analysts, and QA teams to refine requirements and deliver business value
  • Create and maintain technical documentation, system designs, and architecture diagrams
  • Apply secure coding practices and ensure compliance with payment and data security regulations
  • Mentor junior engineers and promote best practices in full stack development and cloud-native solutions
  • Identify automation opportunities to improve build, deployment, and monitoring processes

Required Qualifications

  • Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience)
  • 6–9 years of experience in software engineering, with a focus on backend or full-stack development
  • Strong expertise in Java and Spring Boot, including RESTful services and microservices architecture
  • Advanced proficiency in SQL / PL-SQL and MySQL (query tuning, schema design, transactional systems)
  • Hands-on experience with AWS services for application hosting, scalability, and monitoring
  • Solid experience with JavaScript for web application development and API integration
  • Experience in cards and payments domain (authorization, settlement, disputes)
  • Strong understanding of software development lifecycle, best practices, and secure coding principles

Preferred Qualifications

  • Experience working in high-volume transaction environments
  • Familiarity with CI/CD tools and DevOps practices
  • Exposure to regulatory and compliance requirements in financial systems

Location: Ontario, Canada
Salary Range: 69,000 - 110,000
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.
-- 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.

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.

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] for roles based in the Americas or [email protected] for roles based in India.

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.

a blue line drawing of a plant with leaves

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.

Stay Healthy Midnight Blue RGB

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. 

Build The Career You Want Midnight Blue RGB

Your career, your way

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

Making A Meaningful Impact Midnight Blue RGB

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.

a person sitting at a table using a laptop

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.

a person holding a tablet and talking on the phone

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.

a person smiling at a table with a laptop

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.

a group of people sitting around a table

Step 4: Decision time

Our team will then review each candidates’ 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.

1 (2)
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
2
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
3
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
4
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

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