Location : Burgess Hill Work frequency in the office :3 days work from office Job Summary As a Senior Engineer in you will be building core features and functions of card transaction systems on distributed platform deployed in the cloud. Actively participating in agile teams and the latest development practices, writing code and unit tests, working with API specs and automation. Engineers use Java Technologies to drive innovation while also finding opportunities for adopting new technologies. As a part of technical team, you will work to bring ground-breaking and diverse ideas to life that power the digital systems, services, products, and platforms. Developing seamless integrations between vendor products and the environment by developing APIs, utilizing enterprise file transfer, and Identity and Access platforms. Collaborating with product owners, delivery managers, vendors, engineers, architects, and key stakeholders to resolve complex technical problems and create solutions. Maintaining the Platform Health of vendor products through vulnerability remediation, CMDB validation and maintenance, threat modeling, and ensuring enterprise resiliency Technical Skills: Java Spring Spring boot Micro services Openshift cloud Webservices (SOAP and RESTful) GIT Maven work Role Responsibilities What the person will do. This list will be included in the offer letter and should have at least 8 bullet points: Familiar with Agile or other rapid application development methods Strong engineering hands-on experience on the below technical skills:Java, J2EE, vert.xJava Memory Management, Garbage Collection, Multithreading, Immutability & concurrency programming System design & architecture with Spring Framework Familiarity with reactive programming frameworks - Spring Webflux, RXJavaExperience with RESTful and GraphQL based micro-servicesRelational Databases like Oracle, DB2, Postgres NoSql databases like Couchbase, Cassandra, Mongo, S3Microservices design patterns Event driven programming paradigm using Kakfa, Solace, MQ Continuous Integration, and full SDLC Development tools, including Jenkins, Bamboo, GIT, Maven, Junit, SonarCube, Static analysis, Security testing Understanding of SaaS, PaaS, IaaS industry with hands-on experience with public cloud offerings (e.g., AWS, Azure) Experience creating and implementing effective monitoring, tracing and system performance toolingAbility to think and analyse both breadth-wise (client, server, DB, control flow) and depth-wise (threads, sessions, space-time complexity) while designing and implementing services Able to communicate complex data structures and associated components Designs, codes, tests, maintains, and documents applications Defines test conditions based on the requirements and specifications provided Has deep understanding of the core tools used in the planning, analysing, crafting, building, testing, configuring, and maintaining of assigned application(s) Essential Skills: Java Spring, Spring boot Micro services Openshift cloud Webservices (SOAP and RESTful) GIT Maven work Domain Skills Micro services Nice to Have Skills: Couchbase Cassandra Mongo S3 Microservices design patterns Event driven programming paradigm using Kakfa Solace MQContinuous Integration Vert.x GraphQL Spring WebFlux(e.g.,RXJava) Kafka Solace MQ SaaS PaaS LaaS Public cloud (AWS/Azure) Performance monitoring tools Qualifications: Bachelors degree or Higher About us: Cognizant is one of the world's leading professional services companies, transforming clients' business, operating, and technology models for the digital era. Our unique industry-based, consultative approach helps clients envision, build, and run more innovative and efficient businesses. Headquartered in the U.S., Cognizant (a member of the NASDAQ-100 and one of Forbes Worlds Best Employers 2025) is consistently listed among the most admired companies in the world.