Senior Java Backend Developer

Overview Expleo is a trusted partner for your innovation journey. As a global engineering, technology and consulting service provider, we are ideally positioned to help you achieve your ambitions and future-proof your business. With a smart blend of bold thinking and reliable execution, we’re able to fast-track innovation through each step of your value chain. We are strategically positioned to build value, with global footprint across 30 countries.We are as global and local as you need us to be, with strong best-in-class pan-European technological centres and unique best-shoring capabilities. We leverage a network of high value-adding affiliates in consulting and industrial excellence, and leading partners across multiple sectors to provide you with the most comprehensive services and solutions in an ever-changing environment. Responsibilities -Lead the design and implementation of complex Java Microservices. -Define and promote architectural patterns, coding standards and security best practices. -Take ownership of IAM architecture, including Keycloak, Okta and OIDC. -Drive technical discussions with Product Owners, Architects and engineering teams. -Identify and solve performance, scalability and security challenges. -Lead code reviews and promote engineering quality standards. -Work with tools such as SonarQube and Snyk. -Mentor Junior and Mid-Level developers. -Create and maintain technical documentation, including ADRs and technical runbooks. Essential skills -8+ years of professional experience. -Strong hands-on experience with Java and Microservices. -Solid knowledge of Software Architecture and distributed systems. -Experience making technical and architectural decisions. -Strong experience with IAM / Identity & Access Management. -Hands-on experience with Keycloak, Okta and OIDC. -Knowledge of authentication, authorization and federation. -Experience with code reviews, secure coding and quality practices. -Strong communication and technical leadership skills. -Experience mentoring and guiding other engineers. Desired skills -Experience as a Java Technical Lead, Java Architect or Software Architect. -Experience in E-commerce / Unified Commerce environments. -Experience with cloud-native architectures. -Experience with Keycloak realm architecture and Okta federation. -Experience working with Product Owners and Enterprise/Solution Architects.