Senior Fullstack Software Engineer - Java
Job in
London, Greater London, W1B, England, UK
Listed on 2026-03-01
Listing for:
Cognizant
Full Time
position Listed on 2026-03-01
Job specializations:
-
Software Development
Java Developer, Software Engineer, Cloud Engineer - Software, Full Stack Developer
Job Description & How to Apply Below
Key Responsibilities Design, develop, and maintain scalable microservices using Java 17 and Spring Boot. Collaborate with cross-functional teams to deliver high-quality software solutions. Participate in architecture discussions and ensure adherence to best practices. Contribute to cloud-native development initiatives on AWS. Support migration of mainframe functionality to modern microservices architecture. Develop new microservices for greenfield projects while maintaining existing systems. Ensure code quality through testing and adherence to development standards.
Required Skills & Capabilities Proficiency in Java 17 and Spring technology stack. Strong understanding of microservice design patterns. Advanced knowledge of application, data, and infrastructure architecture disciplines. Proficient in SQL and database modeling.
Experience with messaging technologies such as Kafka or Rabbit
MQ. Exposure to React JS, Redux, HTML5, CSS3 (approx. 25% frontend involvement). Familiarity with frontend testing tools like Jest. Working proficiency with development toolsets and CI/CD pipelines. Knowledge of industry-wide technology trends and best practices. Ability to work effectively in large, collaborative teams. Exposure to cloud-native development on AWS. Domain knowledge of Investment Banking / Asset & Wealth Management (preferred). Must-Have Skills Java 17 Spring Boot Microservices Kafka AWS SQL Nice-to-Have Skills Kubernetes React JS Additional Details Cloud Platform: AWS Frontend involvement:
Approximately 25% (React JS and testing tools like Jest). Project Context:
Combination of greenfield development and migration from mainframe to microservices.
Position Requirements
10+ Years
work experience
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