Senior_Principal_Agentic_Engineer

At Lilly, the work is demanding because patients are waiting. We unite caring with discovery to help make life better for people around the world, knowing that every decision, every detail, and every day matters. Headquartered in Indianapolis, Indiana, our over 50,000 employees around the globe take on complex challenges to discover and deliver life-changing medicines, strengthen how health is understood and managed, and support the communities we serve. This is hard, urgent, selfless work—but it’s work worth doing. If you’re driven by purpose and ready to bring your best to work that truly matters for patients, we invite you to join us. 

Senior Principal Agentic Engineer Job description About Lilly At Lilly, everything we do starts with patients. We unite caring with discovery to make life better for people around the world. Headquartered in Indianapolis, Indiana, our global team of over 50,000 employees work with urgency and purpose to discover and deliver life-changing medicines, strengthen how health is understood and managed, and support the communities we serve. We bring our best to this work because people depend on it. If you’re driven by purpose and determined to make a meaningful difference for patients, we invite you to bring your skill and your commitment to Lilly.

About Tech@Lilly At Lilly, technology is not a support function. It is how a global medicine company operates, innovates, and delivers. Lilly in Hyderabad builds the capabilities that make this possible, cloud platforms, AI systems, and automation at enterprise scale, all in service of a purpose that makes this technology work genuinely distinctive, from advancing drug discovery to enabling connected clinical trials to keeping a global medicine company running at the standard patients deserve.

Experience 12+ years Location Hyderabad (Onsite) Employment Type Full-time Job Family R4 — Agentic AI / AI Full Stack  / Platform Engineering Time Allocation Majority engineering time · ~20% operational support

About the technology organization Technology at Lilly builds and operates mission-critical digital products and platforms that support the discovery, development, and delivery of medicines that make life better for people around the world. Our teams operate in highly regulated, high-availability environments, where operational excellence, reliability, and quality are non-negotiable. Within Tech@Lilly, the Digital Core organization applies a product, platform, and reliability-first mindset, ensuring that operational capabilities scale sustainably across the enterprise. About the Team Tech@Lilly builds and maintains capabilities using pioneering technologies like the most prominent tech companies. What differentiates Lilly IT is that we redefine what's possible through tech to advance our purpose, creating medicines that make life better for people around the world, including data-driven drug discovery, connected clinical trials, resilient enterprise platforms, and intelligent digital operations. We hire the best technology professionals from a variety of backgrounds, so they can bring an assortment of knowledge, skills, and diverse thinking to deliver creative solutions in every area of our business. The Digital Core team leads Lilly's transformation into the Digital and AI era. They inspire digitally empowered teams to new ways of working and accelerate innovation and agility. This team powers and advances the entire company by building and maintaining world-class technology capabilities and platforms. Lilly Capability Centre India (LCCI), Hyderabad, is Lilly's premier Global Technology Hub, harnessing data, AI, analytics, and digital solutions to revolutionize healthcare and improve patient outcomes worldwide. Role summary You own the agentic resolution platform end to end — both the cloud-native substrate it runs on and the intelligent agents that run on top of it. From Kubernetes, CI/CD, and observability through agent runtime, LLM patterns, retrieval, evaluation, and human-in-the-loop boundaries, you write the production code, design the architecture, and set the engineering bar that lets automation deflect routine operational work before it ever reaches a human. This is a senior individual-contributor role that is both strategic and deeply hands-on. You ship production platform services and agentic capabilities, make the build-vs-buy calls on tooling and model access, and partner with the senior architect on the patterns that scale. Success is measured by rising deflection, sustained toil reduction, platform availability and developer velocity, and the ability to scale agentic intelligence through systems and people — not individual effort. What you'll be doing

1. Agentic resolution platform — intake to action Architect the agentic resolution platform end to end: intake, classification, action execution, verification, and human-in-the-loop fallback. Build the agent runtime and orchestration layer: agent state and memory, tool integration, multi-agent coordination patterns, and confidence-thresholded handoffs to humans. Define agent-decision observability, audit-ready posture, and the data contracts that let the platform consume durable fixes from upstream engineering teams.
2. LLM application patterns, knowledge, and evaluation rigor Design production LLM patterns: prompt engineering, retrieval-augmented generation (RAG), structured outputs, multi-model routing, and hybrid retrieval over the knowledge corpus. Own the knowledge-base strategy as a compounding deflection lever — every resolved incident becomes training data and structured retrieval input for future automation. Establish evaluation and guardrail frameworks for non-deterministic systems: automated evals, quality scoring, drift detection, and feedback loops that compound agent quality over time.
3. Cloud-native platform — build and operate Architect and operate Kubernetes (EKS or equivalent) at scale for container and serverless workloads supporting agentic and LLM inference traffic patterns. Write production platform services and internal tooling (Python or Go) that automate provisioning, deployment, and operational workflows — not just infrastructure configuration. Define and maintain infrastructure as code (Terraform) integrated with a major cloud's AI stack (AWS Bedrock/SageMaker, Azure AI Foundry, or Vertex AI), with secrets management and audit-ready posture for regulated environments.
4. CI/CD, observability, and developer experience Build and maintain CI/CD pipelines tuned for agentic and AI workloads: model and agent versioning, canary rollouts, evaluation gates, and rollback. Own the observability stack (Prometheus/Grafana/OpenTelemetry plus enterprise tooling) and instrument platform health, agent-decision telemetry, and model-inference metrics. Establish SLOs, SLIs, and reliability standards for both platform and agentic system health; design self-service patterns and golden-path templates that accelerate delivery.
5. Cross-team partnership, security, and talent development Partner with the Reliability Engineering team on which production patterns become agent-assisted automations, and with senior architects on the patterns that scale. Own security posture: network policies, pod security, secrets rotation, vulnerability scanning, and access controls in a regulated pharmaceutical environment. Set the engineering bar through code quality standards, architectural reviews, and role modeling; mentor senior engineers in agentic AI, LLM application patterns, and platform engineering. Influence engineering leaders to adopt automation-friendly patterns at the source, not just downstream. How you will succeed Be recognized as the senior technical authority for agentic platform engineering in your area. Demonstrate measurable, sustained improvements: rising deflection rates, reduced toil, fewer recurring incidents, faster resolution, platform uptime, and deployment velocity. Ship production platform services and agentic capabilities that tangibly move the deflection and developer-experience numbers. Scale agentic intelligence through systems, standards, and people — not individual heroics. What you should bring Required 12+ years of progressive technology experience with substantial hands-on architecture and delivery of automation, AIOps, agentic systems, or cloud-native platforms at enterprise scale. Demonstrated ownership of measurable deflection or operational-toil-reduction outcomes in a production environment — with the numbers to show it. Deep technical fluency in agentic system design: agent runtimes, multi-agent orchestration, tool integration, memory and state management. Practical experience with at least one major framework (LangGraph, LangChain, LlamaIndex, or MCP). Production experience with LLM application patterns: prompt engineering, retrieval-augmented generation (RAG), structured outputs, and multi-model routing. Deep cloud-native background: Kubernetes (EKS or equivalent) at scale, container workloads, infrastructure as code (Terraform), and at least one major cloud's AI stack (AWS Bedrock/SageMaker, Azure AI Foundry, or Vertex AI). Proven ability to build and ship production platform services and tooling — not just configure infrastructure. Expert-level Python (async, packaging, performance) for production services; Go also welcome. Strong CI/CD engineering experience for AI and agentic workloads: model and agent deployment, versioning, canary/blue-green strategies, evaluation gates, and rollback. Observability for AI systems: metrics, logs, traces, and agent-decision telemetry using Prometheus/Grafana/OpenTelemetry, plus at least one enterprise stack (Splunk, Datadog, or Dynatrace). Demonstrated rigor in evaluation and guardrails for non-deterministic systems — automated evals, drift detection, human-in-the-loop verification, and feedback loops. Strong security engineering foundation: network policies, secrets management, vulnerability scanning, and access controls in regulated environments. Bachelor's degree or higher in Computer Science, Information Technology, or a closely related field. Exceptional communication skills, including the ability to translate technical strategy for senior business and technology leadership. This is a hybrid role spanning agentic AI, LLM patterns, cloud-native platform, and developer tooling. We expect strong depth in 2–3 of these areas with the breadth and judgment to learn adjacent domains. Not every tool listed is required. Preferred Working knowledge of operational ML: anomaly detection, event correlation, alert-noise reduction, and model/agent monitoring in production. Experience with AI observability tooling (e.g., LangSmith, Weights & Biases, custom telemetry pipelines). Hands-on experience with ServiceNow integration patterns and chat-based intake platforms (e.g., Microsoft Teams). Experience with vector databases and hybrid retrieval architectures. Experience building internal developer platforms (IDP), self-service provisioning, or platform-as-a-product tooling. Backend development skills beyond infrastructure tooling: REST/gRPC API design, database design, message queues, distributed systems patterns. Experience with policy-as-code, automated compliance checks, or shift-left security tooling. AWS cloud platform fluency, including EKS, Bedrock, SageMaker, and cost-optimization tooling. Familiarity with FinOps practices and cloud cost governance. Experience operating in highly regulated industries (life sciences, financial services, healthcare). Prior experience standing up a new engineering capability from a small founding team. Frontend experience (React, TypeScript) for internal dashboards and developer portals. Leadership expectations Acts with enterprise-first mindset, beyond individual products or teams. Drives accountability, clarity, and engineering rigor across the team. Builds trust through consistency, technical depth, and follow-through. Raises the capability of the organization, not just personal output. Leads through what they build and how they write, not through org-chart authority. Additional information Availability to work flexible work hours is/may be required. This team supports continuous operations and may require non-standard work hours, including some work on weekends and holidays. Appropriate adjustments in benefits will be provided for employees working non-standard hours where applicable. This is an onsite role based in Hyderabad. Candidates should be open to working different shifts when required to align with global delivery partners.

At Lilly, caring is not only what we do for patients. It is how we work. We believe the people who dedicate themselves to making medicines better deserve an environment that makes their lives better too, one where they are supported, respected, and given the space to do their best work. This is not just a policy. It is who we are.

Lilly is dedicated to helping individuals with disabilities to actively engage in the workforce, ensuring equal opportunities when vying for positions. If you require accommodation to submit a resume for a position at Lilly, please complete the accommodation request form for further assistance. Lilly does not discriminate on the basis of age, race, color, religion, gender, sexual orientation, gender identity, gender expression, national origin, protected veteran status, disability, or any other legally protected status.

Lilly is dedicated to helping individuals with disabilities to actively engage in the workforce, ensuring equal opportunities when vying for positions. If you require accommodation to submit a resume for a position at Lilly, please complete the accommodation request form ( https://careers.lilly.com/us/en/workplace-accommodation ) for further assistance. Please note this is for individuals to request an accommodation as part of the application process and any other correspondence will not receive a response.

Lilly does not discriminate on the basis of age, race, color, religion, gender, sexual orientation, gender identity, gender expression, national origin, protected veteran status, disability or any other legally protected status.

#WeAreLilly