Senior Java Engineer

Company description Publicis Sapient is looking for a Senior Java Engineer to build and scale high-performance, cloud-native applications for our global clients. In this role, you’ll bring deep expertise in Java, multithreading, and Spring Boot to design modern microservices architectures deployed on AWS . You will collaborate with distributed agile teams, solve complex business challenges, and play a critical role in delivering secure, scalable, and resilient enterprise systems. Overview Your Impact Design & Build Modern Java Services Lead the development of Java-based microservices using Spring Boot and industry-standard design patterns. Apply strong knowledge of multithreading, ExecutorService, and thread-safe collections to build high-performance systems. Use advanced features of Java 17/21 to enhance performance, maintainability, and scalability. Cloud-Native Engineering on AWS Design and deploy cloud-native services on AWS (Lambda, ECS/EKS, S3, CloudWatch, RDS/NoSQL, etc.). Implement AWS best practices for security, scalability, and resiliency. Performance, Security & Reliability Optimize SQL queries, REST APIs, data processing flows, and microservices performance. Leverage interceptors, filters, reactive programming (WebFlux) , and streaming APIs for high-throughput systems. Implement secure authentication and authorization using Spring Security, OAuth, JWT . Collaboration & Delivery Excellence Participate in Agile ceremonies, sprint planning, and technical design discussions with global teams. Communicate effectively with client stakeholders—translating technical details into business-aligned insights. Assist in CI/CD automation, DevOps best practices, and containerized deployments. Mentorship & Leadership Conduct code reviews, provide technical guidance, and elevate engineering best practices across the team. Contribute to a culture of continuous learning, innovation, and engineering excellence. Responsibilities Skills & Experience Must Have 5+ years of hands-on experience in Java development (Core Java + advanced topics). Strong expertise in multithreading , concurrency, ExecutorService, Collections, and Streams API. Deep experience building Spring Boot microservices following distributed design principles. Hands‑on experience with AWS cloud services (required). Experience with SQL query optimization and relational database performance tuning. Familiarity with NoSQL databases (MongoDB preferred). Strong understanding of Kafka or other event-driven messaging platforms. Proficiency in CI/CD pipelines, Git workflows, and DevOps practices. Excellent English communication skills—comfortable working directly with clients . Nice to Have Experience with Python for automation or backend tasks. Reactive programming (WebFlux) experience. Familiarity with API gateways, microservices security, OAuth/JWT. Hands‑on experience with containerization (Docker, Kubernetes). Strong debugging skills and ability to troubleshoot distributed systems. Qualifications Set Yourself Apart With Experience profiling and tuning JVM performance, memory management, and thread optimization. Strong grasp of enterprise design patterns and architectural decision‑making. Exposure to multi‑cloud or hybrid cloud environments. Demonstrated ability to mentor junior developers or lead small engineering pods. Additional information What you will get: Full time/ Indefinite term contract Remote work environment Local Holidays, Vacations Private medical insurance E-Learning platforms (Udemy, Marcel) Exclusive discounts English lessons *This position is ONLY available for candidates based in Colombia* #J-18808-Ljbffr