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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Java Developer (Blockchain) - **Company:** London Stock Exchange Group - **Location:** London, UK - **Experience:** Expert - **Salary:** £62,218.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Agile Methodology, Amazon Web Services, Amazon S3, Cloud Computing, Cloud Engineering, Software Quality, Databases, Continuous Integration, Data Structures, Relational Databases, Event-Driven Programming, Revision Control Systems, Identity and Access Management, Interoperability, Spring Framework, Junit, Key Management, PostgreSQL, Liquibase, Message Broker, Model View Controller (MVC), Object-Oriented Software Development, Cloud Services, Blockchain, Standard Sql, Swagger, Systems Integration, Openapi, Multithreading, Java Application Server, Enterprise Software Applications, Delivery Pipeline, Concurrency, Spring-boot, Gitlab, Event Driven Architecture, Containerization, AWS Aurora, Gherkin, Apache Kafka, Restful APIs, Cucumber (Software), Domain Driven Design, Docker, Microservices - **Published:** July 24, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5796948744 ## About the Role The successful candidate for the Engineer, Post Trade role, will be working with the Director Technical Delivery Solution and Delivery, will form part of a team building a complex, ground-up cloud-based critical market infrastructure service in a bold new venture for LSEG. This opening requires a candidate who takes great pride in delivering excellence with excellent logical and technical skills and a can-do attitude combined with a helpful mentality, and a wish to play a critical role in forming and growing a new business., Event driven microservices architecture * Strong understanding of microservices design, including pitfalls and best practices. * Knowledge of Domain-Driven Design (DDD) and event-driven architecture principles. * Experience with containerization and orchestration using Docker and Kubernetes. * Skilled in event-driven patterns for efficient and robust communication. * Expertise in building and maintaining DevOps pipelines, ideally with GitLab. * Proficient in shift-left testing using tools like JUnit, Cucumber, Gherkin, PACT, and Test Containers. * Working knowledge of event/message brokers such as Kafka and MQ. Advanced Java * Strong experience in Object-Oriented Programming (OOP). * Advanced knowledge of Java 17+ features and practical experience with Spring Boot. * Skilled in developing RESTful services, including REST design principles, Swagger/OpenAPI, and Spring REST MVC. * Proficient in building and delivering enterprise-grade Java applications. * Hands-on experience with data structures, algorithms, concurrency, and multi-threading. Database Management * Strong SQL knowledge with experience in relational databases such as Postgres. * Working knowledge of object storage solutions, e.g., AWS S3. * Familiarity with database version control tools like Flyway and Liquibase. Cloud Architecture * Experience working with major public cloud platforms, preferably AWS. * Hands-on use of cloud-based services such as AWS Aurora, MSK, S3, and IAM. * Basic understanding of cloud networking concepts. Blockchain Integration and Interoperability * Understanding of blockchain fundamentals, including consensus mechanisms and smart contracts. * Knowledge of interoperability protocols * Experience integrating blockchain solutions with existing enterprise systems. * Familiarity with cross-chain communication and bridging technologies. * Awareness of security considerations in blockchain integration (e.g., cryptographic standards, key management). * Knowledge of token standard and transaction lifecycle. Agile Ways of Working * Strong understanding and commitment to the ethos of agile working. * Experience working within Scrum and Kanban frameworks. * Active participation in sprint ceremonies, including Product Backlog Refinement. * Proven collaboration with cross-functional teams in scaled agile environments., * Delivery-focused: Committed to meeting deadlines and managing stakeholder expectations. * Accountable: Takes ownership and responsibility for outcomes. * Collaborative: Works effectively within cross-functional teams and fosters teamwork. * Communicative: Champions clear, respectful, and constructive communication. * Quality-driven: Maintains high standards in code quality, testing, and CI/CD practices. * Adaptable & Innovative: Eager to learn, improve, and embrace new technologies. * Critical yet Respectful: Challenges ideas constructively while maintaining professionalism. * Engineering Mindset: Passionate about solving problems and minimizing complexity. ## Description A strong focus on engineering excellence and coding, adopting an open and hands-on approach to problem-solving and delivery. Engage deeply in technical design and implementation to ensure solutions are robust, scalable, and aligned with industry standards. Actively contribute to all stages of the product engineering life cycle-solutioning, design, coding, and testing-while promoting collaboration and transparency within the team to drive high-quality outcomes. Demonstrate ownership and pride in work, proactively taking on new responsibilities aligned with product engineering needs. Embrace and apply LSEG engineering principles, diving deep technically to build with purpose and foster excellence within the team through open collaboration. 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