AI/ML Developer

Optum, a UnitedHealth Group Company; Metro Manila; Hybrid; PHP 2,000,000 - 3,500,000; Full time

Benefits offered by this job

Hybrid

Laptop provided by the company

Market total rewards package

Medical plan from day 1

Dental, medical, and optical reimburse

Life and disability insurance

Paid time-off benefits

Sick leave conversion

Tuition reimbursement

EAP

Job summary

Optum is seeking an ML/AI engineer to design, develop, test, and deploy AI/ML models and LLM-based agent applications for consumer-facing pharmacy and benefits experiences.

You will build multi-tool agent workflows, integrate LLMs with APIs and enterprise systems, and design robust conversation state management for multi-turn interactions. Collaboration across teams will be essential to drive scalable cloud infrastructure and strong governance for production AI deployments.

Qualifications

• 4+ years of software engineering experience, including 2+ years building AI/ML or LLM-enabled applications.
• Strong Python engineering skills for production backend services and APIs.
• Hands-on experience with cloud-native development on a major cloud platform.
• Experience building and integrating LLM-based applications (prompting, tool/function calling, retrieval, evaluation).
• Experience with CI/CD pipelines, code quality controls, and production incident support.
• Experience with observability and debugging in distributed systems.
• Strong ability to work collaboratively across diverse groups of business and technical stakeholders.
• Exceptional ability to communicate with both technical and non-technical people.

Responsibilities

• Take ownership of designing, developing, testing, deploying, and maintaining AI/ML models and LLM-based agent apps for consumer-facing pharmacy and benefits management experiences.
• Build and improve multi-tool agent workflows that integrate LLMs with APIs, serverless backends, and enterprise systems.
• Design and implement conversation state, memory and context handling, and response personalization for multi-turn interactions.
• Contribute to architecture, implementation, and management of cloud infrastructure for AI solutions using IaC principles.
• Improve model and agent quality via evaluation loops, prompt tuning, and continuous experimentation.
• Design and build reusable AI/ML platforms, components, and frameworks to accelerate innovation across engineering teams.
• Exhibit technical best practices for AI systems in regulated environments.
• Stay current with generative AI and agent frameworks; propose innovative healthcare-focused solutions.

Skills

Python

AI/ML development

Cloud-native

LLM-based apps

CI/CD

Observability

Collaboration

Communication

Tools

AWS Bedrock

Azure OpenAI

LangGraph

Strands

OpenSearch

Pinecone

FastAPI

Job description

Primary Responsibilities

• Take ownership of designing, developing, testing, deploying, and maintaining AI/ML models and large language model-based agent applications for consumer-facing pharmacy and benefits management experiences.

• Build and improve multi-tool agent workflows that integrate large language models with APIs, serverless backend services, and enterprise pharmacy and benefits systems.

• Design and implement conversation state, memory and context handling, and response personalization for multi-turn user interactions.

• Contribute significantly to the architecture, implementation, and management of cloud infrastructure for AI solutions, utilizing Infrastructure as Code principles for reliable deployments.

• Improve model and agent quality through evaluation loops, error analysis, prompt and tool tuning, and continuous experimentation.

• Design and build reusable AI/ML platforms, components, and frameworks to accelerate innovation across the engineering team.

• Exhibit technical best practices for AI systems in regulated environments.

• Stay current with advancements in generative AI, large language model tooling, and agentic frameworks; propose innovative ways to tackle healthcare challenges.

What skills/attributes are a must have

• 4+ years of software engineering experience, including 2+ years building AI/ML or LLM-enabled applications.

• Strong Python engineering skills and experience building production backend services and APIs.

• Hands‑on experience with cloud-native development on a major cloud platform.

• Experience building and integrating LLM-based applications (prompting, tool/function calling, retrieval, evaluation).

• Experience with CI/CD pipelines, code quality controls, and production incident support.

• Experience with observability and debugging in distributed systems.

• Strong ability to work collaboratively across diverse groups of business and technical stakeholders.

• Exceptional ability to communicate with both technical and non-technical people.

Nice to Have / Preferred Skills and Tools

• Experience with managed large language model platforms such as AWS Bedrock or Azure OpenAI, and cloud-hosted agent runtime services.

• Experience with agent orchestration frameworks such as Strands, LangGraph, or comparable tooling.

• Experience with retrieval‑augmented generation (RAG) patterns, vector stores, and semantic search systems such as OpenSearch or Pinecone.

• Experience with conversational AI for chat channels, including multi‑intent flow handling and session memory management.

• Experience with inter‑agent communication patterns and tool orchestration protocols.

• Familiarity with async Python API frameworks such as FastAPI for serving AI applications.

• Experience with healthcare, pharmacy, or pharmacy benefits management domain workflows.

• Familiarity with secure handling of protected health and personally identifiable information, and delivery standards for regulated healthcare environments.

• Experience with AI experimentation, model quality dashboards, and governance review processes for production AI releases.

WHAT WE OFFER

• Hybrid

• Laptop/Computer Provided by the Company

• Market Total Rewards Package

• Retirement Plan

• Medical Plan (HMO) from Day 1 of employment

• Dental, Medical, and Optical Reimbursements

• Life and Disability Insurance

• Paid Time-Off Benefits

• Sick Leave Conversion

• Tuition Fee Reimbursement

• Employee Assistance Program (EAP)

• Annual Performance Based Merit Increases

• Employee Recognition

• Training and Staff Development

• Employee Referral Program

• Employee Volunteerism Opportunity

• All Mandatory Statutory Benefits

WHO WE ARE

• Optumis the health care technology and innovation company of the UnitedHealth Group enterprise along with UnitedHealthcare.

• UnitedHealth Groupis a health care and well-being company with a mission to help people live healthier lives and help make the health system work better for everyone.

• We’re a leading health solution and care delivery organization. Our work is complex, but our mission is simple: create a healthier world, with you at the center.

• As part of a Fortune 5 enterprise, we are improving the health care experience of over 125 million people around the world.

• Elevate your career with a leading health care company while improving lives