> Markdown version of [/jobs/ext/4707131-senior-principal-ai-ml-product-engineer-full-stack](https://www.wearedevelopers.com/jobs/ext/4707131-senior-principal-ai-ml-product-engineer-full-stack). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Principal AI/ML Product Engineer- Full Stack - **Company:** Optum, Inc - **Location:** Washington, DC, United States (Remote available) - **Experience:** Expert - **Salary:** $184,600 - $316,500 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Automation of Tests, Cloud Computing, Code Review, Continuous Integration, Data Stores, Github, EClinicalWorks, Software Engineering, Fast Healthcare Interoperability Resources, Delivery Pipeline, Electronic Medical Records, Backend, Agentic-AI, Information Technology, Production Code, Health Level Seven International, Front End Software Development, Data Pipelines - **Published:** November 13, 2026 - **Apply:** https://arc.dev/remote-jobs/j/redirect/pyvy3rejl1 ## About the Role * 10+ years of professional software engineering experience shipping and operating production systems * Experience in the healthcare industry and/or within a large, complex, matrixed organization. * Full-stack experience: backend services, APIs, and data stores, and enough front-end or mobile to ship a complete product without waiting on another team * Experience building and shipping a large language model application or agent to real users, and can explain how it was evaluated * Ability to use AI coding and agent tools in your own work every day, and has built with them: an agent, automation, or large language model tool you designed, built, and ran, at work or as a personal project * Demonstrated solid testing and operational discipline: automated tests, continuous integration, observability, and on-call ownership of what you ship * Experience with owned cloud infrastructure and deployment for a production system: infrastructure as code, continuous integration and deployment, and security controls that pass an enterprise review * Ability to work at the enterprise level and at a single market's level, and to tell which one a given decision belongs to * Demonstrated clear writing skills: design decisions and findings on this team are written down where the next engineer will find them * Ability working proficiency in GitHub, AI coding and agent tools, cloud platforms, and infrastructure as code * Experience as a senior individual contributor, hands-on: writes production code every day and owns hard problems end to end, working across functions to deliver them * Ability to be a technical owner of a system other engineers built on, including its architecture and the decisions that were hard to reverse, * Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent experience * Experience with healthcare data and integration: FHIR, HL7, SMART on FHIR, or Epic, athenahealth, or eClinicalWorks APIs * Experience building on HIPAA-regulated systems handling protected health information * Experience with evaluation frameworks for large language model systems, including building evaluation sets with domain experts * Production experience with voice or SMS agents * Experience taking an AI capability through an enterprise governance or review process in healthcare * Experience on a small, early-stage product team where engineers owned the whole stack Core Competencies * Building with AI: uses agents and automation to do the job, not only to describe it * End-to-end product engineering and deployment * Healthcare systems integration: FHIR, HL7, and electronic health record APIs * Evaluation and measurement of AI systems * Operational ownership and reliability * Security and privacy by design * Enterprise and market-level judgment * Partnership with Optum Health engineering teams * Technical writing and documentation * Technical architecture and platform ownership * All employees working remotely will be required to adhere to UnitedHealth Group's Telecommuter Policy. ## Description Build & Deploy * Design, build, test, and deploy production software end to end, from backend services and data pipelines to the interfaces care teams and patients use * Own how the team deploys: cloud infrastructure as code, continuous integration and deployment, environments, and release practices safe for software that touches patient care * Build integrations that read from and write to electronic health records and care systems, including Epic, athenahealth, eClinicalWorks, and home care platforms, using FHIR, HL7, and vendor APIs, in partnership with the teams that own those systems * Build AI agents and large language model features across the channels patients and staff already use, including SMS and voice, with the prompt and tool design, retrieval, and guardrails that keep an agent inside what it is approved to do * Prototype against real systems in days, and take what works to production * Build the shared foundation the team builds on with great Optum Health engineering teams: integrations, the deployment pipeline, and the evaluation harness Evaluate & Operate * Build evaluation into the product from the start: automated evaluations of model and agent behavior, tests that fail when behavior breaks, and monitoring for drift after launch. Measuring a non-deterministic system is a first-class engineering job on this team, not a testing afterthought * Operate what you ship: instrumentation, alerting, incident response, and continuous improvement after launch * Define "done" as proven: a change is complete when there is evidence it works, not when the code is merged, and report what did not work as quickly as what did * Partner with technology, data, security, legal, privacy, compliance, care teams, and other stakeholders to deliver products that are responsible, secure, and enterprise-ready, protecting patient data by design through data minimization, access control, and audit Partner & Multiply * Work with great Optum Health engineering teams to accelerate and augment each other's work, and write the documentation, tests, and runbooks another team needs to run what you built without you * Set the team's engineering practices, including code review, AI-assisted development, and the evaluation standard, and improve them as the team grows * Determine which technical decisions belong to a single market and which belong to the enterprise platform, and build accordingly * Write down what the team learns each week so it is reviewed on cadence and turned into decisions. * Raise the AI fluency of the market teams you work with by contributing to shared templates, evaluation bars, and a supported way to ship, so care teams can use and build with AI safely * Own the team's technical architecture and the decisions that are expensive to reverse, and write each one down with what would change it You'll be rewarded and recognized for your performance in an environment that will challenge you and give you clear direction on what it takes to succeed in your role as well as provide development for other roles you may be interested in.