About us: Elsevier is a global leader in advanced information and decision support for science and healthcare. We believe that by working together with the communities we serve, we can shape human progress to go further, happen faster, and benefit all. We support continuous discovery and uphold the highest standards of content integrity, reliability, and reproducibility so the communities we serve can advance their field of science, healthcare or innovation with confidence. By combining high-quality content with powerful analytics, we transform complexity into clarity and deliver mission-critical insights that help professionals make better decisions when it matters most. We deliver insights that help research institutions, governments and funders achieve their goals. We help researchers discover and share knowledge, collaborate, and accelerate innovation. We help librarians provide verified, quality information to universities. We help innovators turn knowledge into new products. We help health professionals improve patient care and educators train the next generation of doctors and nurses. Connecting quality content and innovative technologies, we make progress go further and happen faster. And by championing inclusion and sustainability we ensure progress benefits all. With 9,500 employees, over 2,300 technologists in 5 major tech hubs, and more than 60 locations across the globe, we are committed to supporting the scientific and healthcare communities around the world. We offer a diverse range of opportunities across technology, commercial, business, and early career jobs. If you are looking for a career that inspires progress in science, innovation and health, and allows you to grow every day, find your team at Elsevier. Elsevier is part of RELX Group. About the team : Elsevier is a global leader in advanced information and decision support for science and healthcare. We believe that by working together with the communities we serve, we can shape human progress to go further, happen faster, and benefit all. For more than 140 years, we’ve helped impact makers to advance science and healthcare to advance human progress, and that same mission drives us today. If you are looking for a career that inspires progress in science, innovation and health, and allows you to grow every day, join us. Let’s shape progress together. About the Role: + We are seeking a Senior Software Engineer II with deep expertise in search infrastructure and modern retrieval systems. You’ll design, build, and optimize high-performance search services using technologies like OpenSearch and ElasticSearch, deployed at scale on EKS. You will contribute to the development of new RAG-based search workflows and ensure our platform delivers fast, relevant, and reliable results. Responsibilities: + Design and implement scalable search systems leveraging ElasticSearch/OpenSearch and container orchestration via EKS. + Develop retrieval-augmented generation (RAG) pipelines that integrate search with generative AI tools. + Write clean, modular, and testable code in Python and Java. + Diagnose and resolve complex issues across distributed search infrastructure. + Collaborate with cross-functional teams to align engineering efforts with product goals. + Mentor less-experienced engineers and participate in code reviews and technical design discussions. + Support CI/CD pipelines and implement observability for search performance and reliability. + Stay up-to-date on advancements in retrieval models, semantic search, and generative AI integration. + Requirements: + 5+ years of experience in software engineering with a focus on distributed systems or search technologies + Expertise in Python and Java + Strong experience with ElasticSearch or OpenSearch in production environments + Familiarity with Kubernetes and EKS deployments + Deep understanding of performance optimization in large-scale search systems + Solid grasp of test-driven development and CI/CD practices + Ability to work independently on complex problems and deliver production-ready code + Comfortable working in Agile or iterative environments + Experience building or integrating RAG pipelines is a plus. + Familiarity with semantic search, embeddings, or vector databases is a plus. + Knowledge of logging, alerting, and observability in search infrastructure is a plus. Work in a way that works for you: We promote a healthy work/life balance across the organisation. We offer an appealing working prospect for our people. With numerous wellbeing initiatives, shared parental leave, study assistance and sabbaticals, we will help you meet your immediate responsibilities and your long-term goals. This is a hybrid role. Our teams operate in a flexible hybrid work model, combining in-person collaboration with remote flexibility. You’ll be expected to participate in regular team meetings and engineering rituals in line with your team’s cadence. Working for you: "We know that your well-being and happiness are key to a long and successful career. These are some of the benefits we are delighted to offer: ● Private Medical/Dental Plan ● Savings Fund ● Life Insurance ● Meal/Grocery Voucher" About the business: A global leader in information and analytics, we help researchers and healthcare professionals advance science and improve health outcomes for the benefit of society. Building on our publishing heritage, we combine quality information and vast data sets with analytics to support visionary science and research, health education and interactive learning, as well as exceptional healthcare and clinical practice. What you do every day will help advance science and healthcare to advance human progress. . We are committed to providing a fair and accessible hiring process. If you have a disability or other need that requires accommodation or adjustment, please let us know by completing our Applicant Request Support Form or please contact 1-855-833-5120. Criminals may pose as recruiters asking for money or personal information. We never request money or banking details from job applicants. Learn more about spotting and avoiding scams here . Please read our Candidate Privacy Policy . We are an equal opportunity employer: qualified applicants are considered for and treated during employment without regard to race, color, creed, religion, sex, national origin, citizenship status, disability status, protected veteran status, age, marital status, sexual orientation, gender identity, genetic information, or any other characteristic protected by law. USA Job Seekers: EEO Know Your Rights . RELX is a global provider of information-based analytics and decision tools for professional and business customers, enabling them to make better decisions, get better results and be more productive. Our purpose is to benefit society by developing products that help researchers advance scientific knowledge; doctors and nurses improve the lives of patients; lawyers promote the rule of law and achieve justice and fair results for their clients; businesses and governments prevent fraud; consumers access financial services and get fair prices on insurance; and customers learn about markets and complete transactions. Our purpose guides our actions beyond the products that we develop. It defines us as a company. Every day across RELX our employees are inspired to undertake initiatives that make unique contributions to society and the communities in which we operate.