Senior Java Dev (Java, Kafka)
Cognizant’s Digital Engineering practice is seeking a highly qualified Senior Java Dev ( Java, Kafka) with min 8+ years’ experience developing and building high-performing, scalable, enterprise applications. As a Sr. Software Engineer B2, you will play a pivotal role in designing, developing, and maintaining high-quality software solutions. You will leverage your expertise in Kafka, Database and SQL, Hibernate, Spring Boot, Spring Framework, Java MQ, Rest API, and Java to drive innovation and efficiency. This role offers the opportunity to work in a dynamic environment, contributing to impactful projects that align with the company’s vision.
Cognizant Digital Engineering If you’re like us, you’ve got big ideas. At Cognizant, we’re exploring new ideas every day. We help industry leading companies reinvent their business models and innovate products that create new value—by connecting people with things, insights, and experiences. Cognizant digital engineering designs, engineers and deliver digital products and experiences that drive digital-first business models. We offer the most comprehensive digital engineering expertise and client-centric methodology for sustainable innovation.
Location: Toronto, ON, CANADA (Hybrid)
You must be legally authorized to work in Canada without the need for employer sponsorship, now or at any time in the future.

Responsibilities:
Design scalable event driven backend services using Kafka and Core Java to support high volume transaction processing in a secure and efficient manner
Develop robust Spring Boot microservices that enable reusable payment and card processing capabilities aligned with enterprise architecture standards
Implement reliable Kafka producers and consumers that ensure exactly once or appropriate delivery semantics for critical financial events
Optimize application performance by profiling Java code tuning threads and memory and improving response times for latency sensitive operations
Create modular and testable service components that promote clean separation of concerns and ease of maintenance across the codebase
Collaborate with product owners and business partners to translate complex cards and payments requirements into clear technical solutions
Integrate services with upstream and downstream systems using secure APIs and messaging while maintaining data consistency and observability
Apply secure coding practices and relevant compliance guidelines to protect customer information and transaction data throughout the solution lifecycle
Develop automated unit and integration tests that increase coverage and ensure regression free deployments for critical payment workflows
Troubleshoot production incidents by analyzing logs metrics and traces and implement durable fixes that improve platform stability and customer trust
Contribute to code reviews by providing constructive feedback that improves code quality maintainability and alignment to engineering standards
Document technical designs service contracts and operational runbooks that support smooth onboarding support activities and future enhancements
Mentor peers through knowledge sharing sessions on Kafka patterns Spring Boot best practices and resilient design techniques that uplift team capability

Qualifications:
Possess strong hands on expertise in Core Java including collections concurrency and functional constructs used to build enterprise grade services
Demonstrate advanced proficiency in Spring Boot including dependency injection data access configuration management and production ready features
Exhibit practical experience designing and operating Kafka based solutions with topics partitions consumer groups and message serialization patterns
Bring experience in developing secure and scalable APIs that integrate with internal systems or partner platforms in a financial services context
Show familiarity with cards and payments domain concepts such as authorization clearing settlement and dispute handling as a desirable advantage
Apply solid understanding of software engineering practices including version control continuous integration code review and automated testing
Display experience working in hybrid work environments with distributed teams using collaboration tools and clear communication to ensure alignment
Canadian Pay Transparency Statement
We regularly assess market data to ensure we offer a competitive compensation package for our associates. The base salary for this position ranges between $ 84,183 – 135,500 per year. Where the successful candidate may fall within the range depends on relevant education, work and/or management experience and other business-related and job-necessary qualifications. This position is also eligible for Cognizant’s discretionary annual performance-based bonus, as well as benefits that support your physical, mental and financial wellbeing.
Why Choose Cognizant?
It takes a lot to succeed in today’s fast-paced market, and Cognizant Technology Solutions has become a leader in the industry. We love big ideas and even bigger dreams! We stand out because we put human experiences at the core. Our associates enjoy robust benefits and training opportunities from our industry-recognized, award-winning Academy team. You will have access to hundreds of technical training courses to keep your skillsets fresh and have opportunities to acquire certifications on the newest technologies.