Senior Software Engineer

Senior Software Engineer CVS Health, Ireland (Galway) CVS Health, the parent company of Signify Health, is increasing investments in digital, data, analytics and technology and Signify Health is excited to be involvedWe are hiring for a dynamic new initiative for CVS Health that will run out of our state-of-the-art offices at Bonham Quay.This is your opportunity to be involved with a pioneering business that is transforming health care in the United States by making customer experiences more seamless, convenient and personalised.CVS Health is focused on driving business agility and growth through technology, data, digital and experiential innovations.Digital First, Technology Forward and Data Driven is not simply an aspirational goal for the company, but a prerequisite to accelerated growth.Bring your heart to CVS Health.Every one of us at CVS Health shares a single, clear purpose: Bringing our heart to every moment of your health.This purpose guides our commitment to deliver enhanced human-centric health care for a rapidly changing world.Anchored in our brand with heart at its center our purpose sends a personal message that how we deliver our services is just as important as what we deliver.Our Heart At Work Behaviors support this purpose.We want everyone who works at CVS Health to feel empowered by the role they play in transforming our culture and accelerating our ability to innovate and deliver solutions to make health care more personal, convenient and affordable.As we reflect on our learnings and successes from remote work, we aim to provide a new state of the art flexible work environment in our Galway facility at Bonham Quay to support those objectives.Careers with offer flexible work arrangements and individuals who live and work in the Republic of Ireland will have the opportunity to divide their time between our Galway office and their home office.POSITION SUMMARY CVS is seeking a highly skilled and experienced Senior Software Development Engineer to join our growing team and revolutionize our e-commerce search experience.You will be responsible for developing and implementing innovative Neural Networks, kNN, natural language processing (NLP), learn-to-rank (LTR) solutions to power our search engine, ensuring our customers find the products they need quickly and efficiently.What you will do Designs and defines the technical architecture and infrastructure required for digital solutions Writes code, develops software components, and implements complex functionalities according to project requirements Collaborates with other members of the development team and stakeholders to make high-level architectural decisions, proposes design patterns, and ensures scalability, performance, and maintainability of digital solutions Leverages advanced programming skills to design and implement complex features, optimize performance, and ensure code efficiency Integrates various software components or systems, ensuring seamless communication and interoperability between different parts of the digital solution Writes and executes comprehensive test cases, conducts code reviews, performs debugging, and troubleshoots issues to ensure the reliability, stability, and high quality of digital solutions Participates in agile or other development methodologies, attends meetings, contributes to project planning, and helps drive the progress and success of digital projects Explores new tools, frameworks, and techniques to improve digital solutions and drive innovation within the development team Creates and maintains technical documentation, including system designs, architecture diagrams, code documentation, and other relevant documentation while sharing their knowledge and expertise with team members, ensuring effective knowledge transfer and collaboration REQUIRED QUALIFICATIONS 5+ years of total IT experience, with a few years preferably focused within Data Science 3+ years developing and implementing Neural Networks, kNN, natural language processing (NLP), learn-to-rank (LTR) solutions in a production environment Deep understanding of various LTR algorithms, including LambdaMART, RankNet, and LightGBM Strong programming skills in Python and experience with machine learning libraries such as scikit-learn, TensorFlow,and PyTorch Experience working with large datasets and developing scalable data pipelines Experience with A/B testing and data analysis for measuring model performance PREFERRED QUALIFICATIONS Experience with eCommerce platforms and user behavior modeling Familiarity with LLMs and generative AI applications in search Knowledge of MLOps practices and model deployment pipelines Passion for e-commerce and a deep understanding of user behavior Contributions to open-source search or ML projects EDUCATION Bachelors degree or, equivalent experience (HS diploma + 4 years relevant experience)