Senior Java Full Stack Developer / Tech Lead (On-site)

Cognizant’s Digital Engineering

Our practice is seeking a highly qualified Senior Java Full Stack Developer / Tech Lead with experience developing and building impactful, scalable, enterprise applications. Our Developers have a passion for high-quality, reliable, and maintainable code. You will work side by side with product managers, designers, and clients, making decisions together to quickly deliver valuable working software to clients and their users. Our developers are agile and retrospective, and not afraid to identify what we’re doing wrong, so we can fix it, so we can improve on it. Above all, we judge success by the success of our team and the happiness of our customers.

Location: Riverwoods, IL (On-site)

**Candidate must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future**

Responsibilities
• Java FSE Senior Developer / Tech Lead Profile.
• Strong Scrum background.
• Delivering superior Engineering outcomes.
• Strong expertise in Core Java with special focus on performance.
• Preferably in Banking / Payments industry experience.
• Particularly with recent versions of JDK, ensuring up-to-date knowledge of Java 8 through the latest versions.

Qualifications
• Experience with functional and reactive programming and framework such as Akka.
• Experience with Quarkus and vertx for developing high- performance, cloud-native Java applications with fast startup times and low memory footprint.
• Experience with gRPC for high-performance, cross-platform RPC (Remote Procedure Call) framework for efficient inter-service communication.
• Solid understanding of serialization and deserialization payload formats such as Protocol Buffers, Avro.
• Proven experience in analyzing and optimizing Java-based microservices for performance and scalability.
• Familiarity with NoSQL databases (e.g., MongoDB, Cassandra) for handling large volumes of structured and unstructured data.
• In-depth knowledge of techniques for optimizing applications to achieve low latency and high throughput.
• Experience in transitioning from monolithic architectures to microservices, focusing on modularity, scalability, and maintainability.
• Proficiency in using micro services design patterns for building scalable Java applications.
• Experience with message brokers like Kafka or RabbitMQ for building scalable, event-driven architectures.
• Proficiency in containerization (e.g., Docker) and orchestration (e.g., Kubernetes) to deploy and manage distributed applications efficiently.
• Experience in implementing low latency and multi-threading techniques.
• Insight into key areas for performance improvement in Java applications, such as garbage collection tuning, memory management, and efficient use of data structures.
• Knowledge of open-source tools to minimize costs while achieving high performance.
• Core Java: Solid Foundation in Latest version of Java (17 ), Java Memory Models, JVM Performance Tuning, concurrency). Knowing other functional language is a plus.
• Database: SQL (Postgres) / NoSQL (Cassandra).
• Caching: Familiarity with Redis or Similar is desirable.
• Event Streaming: Kafka/RabbitMQ.
• Cloud Native: Docker/Kubernetes/Ansible/Helm/AWS/OCP.
• Frameworks: Reactive Programming/Spring.
• Cloud Migration: CDC / ACLs / Hybrid Deployments.
• DevOps: Pipelines/CICD/Git/TDD/Automated Testing/Chaos Engineering.
• US Degree would be an advantage.

Travel: 0-5%

Why Choose Cognizant?

Our associates enjoy robust benefits and training opportunities from our industry recognized, award winning Academy team. You will have access to hundreds of technical trainings to keep your abilities fresh and have opportunities to acquire certifications on the newest technologies.

If you became comfortable with ambiguity, delight by change, and excel through autonomy, we’d love to hear from you!

Cognizant is an equal opportunity employer provider and committed to creating a diverse environment. We consider all applicants without regard to race, creed, color, national origin, ancestry, age, marital and family status, disabilities, sexual orientation or preference, veteran status or any other classification protected by state, federal or local law.

About Cognizant:
Headquartered in the U.S, Cognizant leverages a highly flexible business model, a flawless global delivery network, and deep domain expertise to deliver to a long list of world-class companies that are leaders in their own space.

www.cognizant.com
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