Staff Backend Engineer - AI Platforms (Health100)

Staff Backend EngineerWe're building a world of health around every individual — shaping a more connected, convenient and compassionate health experience. At CVS Health®, you'll be surrounded by passionate colleagues who care deeply, innovate with purpose, hold ourselves accountable and prioritize safety and quality in everything we do. Join us and be part of something bigger – helping to simplify health care one person, one family and one community at a time.Health100 is America's trusted front door to health and care. The Health100 platform integrates any participating health plan, PBM, pharmacy (retail and specialty), provider, digital health point solution provider, and employer, and addresses the top health care challenges for the consumer.We are seeking a passionate and hands-on Staff Backend Engineer to join a high-impact engineering team focused on building next-generation intelligent platforms. This role requires a strong technologist who can operate both as a technical leader and individual contributor, driving the design and delivery of scalable, production-grade AI solutions.The ideal candidate is enthusiastic about emerging technologies, particularly Generative AI, LLMs, and agentic systems, and can work independently while effectively leading and collaborating with cross-functional teams. You will play a critical role in building AI-powered applications, leveraging advanced techniques such as prompt engineering, Retrieval-Augmented Generation (RAG), model evaluation, and fine-tuning, while integrating them into enterprise-grade systems.This role also requires backend API development, enabling end-to-end ownership of AI-enabled application with strong understanding of frontend frameworks (Angular/React).Key Responsibilities:Design, build, and deploy scalable AI/GenAI applications leveraging LLMs, RAG architectures, and agentic frameworksDevelop and optimize AI prompts, evaluation frameworks, and model pipelines to improve accuracy, performance, and reliabilityArchitect and implement end-to-end solutions, including frontend applications (Angular/React) and backend APIs/servicesIntegrate AI capabilities into enterprise systems using cloud-native and microservices architecturesLead technical design discussions and drive scalable, secure, and high-performance architecture decisionsCollaborate across product, business, and engineering teams to deliver impactful solutions aligned with business goalsBuild reusable frameworks and tooling for LLM evaluation, monitoring, and observabilityEnsure adherence to best practices in software engineering, including CI/CD, testing, code reviews, and securityMentor and guide engineers, fostering a culture of innovation, quality, and continuous improvementStay current with emerging trends in AI/ML, LLM ecosystems, and modern web technologiesRequired Qualifications:7+ years of experience in software engineering, delivering scalable, production-grade applications5+ years experience in backend development, including:API development using Java, Python, or Node.jsExperience in designing and developing microservices and RESTful APIsHands-on experience with cloud platforms (GCP, RKE)Strong understanding of CI/CD pipelines, DevOps practices, and containerization (Docker/Kubernetes)Strong understanding of Frontend frameworks including Angular, React, or similar1+ years of hands-on experience with Generative AI / LLM-based systems, including:Prompt engineering and LLM interactionsRAG (Retrieval-Augmented Generation) architecturesLLM evaluation techniques and frameworksExperience building AI-enabled applications using modern frameworks and toolsPreferred Qualifications:Ability to work independently while leading initiatives and collaborating across teamsExcellent problem-solving, analytical, and communication skillsHands-on experience in model fine-tuning and optimization techniquesExperience building multi-model or multi-provider AI orchestration systemsFamiliarity with vector databases, embeddings, and semantic search architecturesExperience implementing LLM observability, evaluation pipelines, and guardrailsExperience with frontend performance optimization and modern UI/UX practicesExposure to event-driven architectures, message queues, and streaming systemsHealthcare or regulated domain experienceEducation:Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent experience (High School diploma + 4 years of relevant experience)Pay Range:$106,605.00 - $260,590.00This pay range represents the base hourly rate or base annual full-time salary for all positions in the job grade within which this position falls. The actual base salary offer will depend on a variety of factors including experience, education, geography and other relevant factors. This position is eligible for a CVS Health bonus, commission or short-term incentive program in addition to the base pay range listed above. This position also includes an award target in the company's equity award program.Our people fuel our future. Our teams reflect the customers, patients, members and communities we serve and we are committed to fostering a workplace where every colleague feels valued and that they belong.Great benefits for great peopleWe take pride in offering a comprehensive and competitive mix of pay and benefits that reflects our commitment to our colleagues and their families. This full?time position is eligible for a comprehensive benefits package designed to support the physical, emotional, and financial well?being of colleagues and their families. The benefits for this position include medical, dental, and vision coverage, paid time off, retirement savings options, wellness programs, and other resources, based on eligibility. Oak St. Health