Senior Fullstack Software Engineer - Java

Cognizant; Glasgow; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading technology firm in Glasgow is seeking a Senior Fullstack Software Engineer with strong expertise in Java 17+ and Spring Boot. You will design and maintain scalable microservices and collaborate with cross-functional teams. The ideal candidate will have significant experience in microservice architecture and be proficient in SQL and AWS. This role includes working on innovative greenfield projects as well as migrating legacy systems to modern architectures, fostering a culture of collaboration and continuous learning.

Qualifications

• Proficiency in Java 17+ and Spring technology stack.
• Strong understanding of microservice design patterns.
• Experience with SQL and database modeling.

Responsibilities

• Design, develop, and maintain scalable microservices using Java 17+ and Spring Boot.
• Collaborate with cross-functional teams to deliver high-quality software solutions.
• Support migration of mainframe functionality to modern microservices architecture.

Skills

Java 17+

Spring Boot

Microservices

Kafka

AWS

SQL

React JS

Tools

CI/CD pipelines

Jest

Kubernetes

Job description

Senior Fullstack Software Engineer - Java

As an experienced member of our Software Engineering Group, we seek individuals passionate about solving business challenges through innovation and modern engineering practices. You will leverage your deep expertise across the software development lifecycle while collaborating closely with stakeholders to achieve shared goals. We foster a culture of experimentation, continuous improvement, and learning within a collaborative and trusting environment.

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 RabbitMQ.
• 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.