Senior Software Engineer (Java)

# Senior Software Engineer - Nottingham Engineering Hub At LSEG, we're transforming financial markets through data, technology, and innovation. Our teams build resilient, scalable platforms that power global finance. If you're passionate about writing clean, maintainable code, building cloud-native applications, and delivering software that makes an impact, we invite you to bring your skills to our collaborative tech hub in Nottingham. About the Role As a Senior Software Engineer , you will: Design and develop Java-based microservices for cloud-native applications on AWS . Work in an Agile environment , embracing trunk-based development , continuous delivery , and a shift-left approach to quality . Collaborate closely with engineers and quality specialists to ensure microservices testing strategy is applied effectively: + Unit tests for logic correctness. + Component tests for service boundaries. + Contract tests for service interactions. + Simple, maintainable end-to-end tests for critical workflows. Have an appetite to run containerized services locally (e.g. Docker, Podman) to prevent integration issues and keep pipelines clean. Contribute to CI/CD pipelines , ensuring fast, reliable deployments. Participate in code reviews, refinement sessions, and planning to improve design, testability, and maintainability. Take ownership of your work and help the team continuously improve through retrospectives and knowledge sharing. # Main Responsibilities Build and maintain efficient, reusable, reliable, and secure Java code based on user stories and software designs. Develop and integrate RESTful APIs and microservices architectures. Ensure quality through automated testing and a shift-left approach . Contribute to trunk-based development workflows and maintain healthy continuous delivery pipelines. Participate in Agile ceremonies and provide timely updates on progress. Analyse requirements, provide design input, and estimate complexity. # Essential Skills Solid experience with Java and the JVM ecosystem. Strong understanding of object-oriented programming , design patterns, and microservices architecture. Experience with unit testing and writing clean, maintainable code. Familiarity with microservices testing strategy (unit, component, contract, end-to-end). Knowledge of AWS services (SQS, Lambda, API Gateway, S3, CloudWatch, IAM). Experience with CI/CD pipelines and trunk-based development. Good communication skills and a collaborative mindset. Familiarity with Git and modern branching workflows. # Desirable Skills Experience working with Elasticsearch Experience with containerization (Docker, Kubernetes, EKS, ECS). Familiarity with CI/CD tooling (Jenkins, GitLab). Experience with BDD practices Knowledge of secure coding practices and observability (distributed tracing, monitoring). Infrastructure as Code: Terraform , CloudFormation. Career Stage: Senior Associate London Stock Exchange Group (LSEG) Information: Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership , Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone's race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.Please take a moment to read this carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it's used for, and how it's obtained, .If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.LSEG (London Stock Exchange Group) is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth. Our culture of connecting, creating opportunity and delivering excellence shapes how we think, how we do things and how we help our people fulfil their potential.