
Senior Systems Engineer Stefanini
- $50–$53 Per Hour
- Temporary
- Contractor
| Location | Minnetonka, MN |
Optum is looking for a Senior AI-Native Full-Stack Engineer who can build modern applications using AI coding tools as part of their day-to-day development.
The ideal candidate will have strong full-stack development experience, especially with React/Angular, TypeScript, Java/Spring Boot, REST APIs, databases, and cloud platforms.
This role also involves working directly with business stakeholders to understand requirements, create prototypes, develop solutions, and deliver production-ready applications.
Required Skills7+ years of software engineering experience
4+ years of Full-Stack Development
Strong experience with React or Angular
Strong JavaScript / TypeScript, HTML, and CSS
Experience with Java 17+ and/or Spring Boot
Strong experience building and integrating REST APIs
Experience with SQL or NoSQL databases such as PostgreSQL, MySQL, Oracle, or Cosmos DB
Experience with AWS, Azure, or GCP
Experience with CI/CD
5+ years working in Agile/Scrum environments
Hands-on experience with AI coding tools such as:
GitHub Copilot
Claude Code
Codex
Enterprise ChatGPT
Similar AI coding agents
The candidate should be comfortable using AI tools to:
Generate and modify application code
Break requirements into development tasks
Create prototypes and features
Write and improve tests
Debug and troubleshoot applications
Review AI-generated code
Identify security, performance, and quality issues
Guide AI agents when the generated solution is incomplete or incorrect
Candidates should have real hands-on experience using AI coding tools in software development, not just basic ChatGPT experience.
ResponsibilitiesDesign and develop full-stack applications using AI-assisted development
Build user interfaces using React, Angular, or similar frameworks
Develop and integrate backend services and REST APIs
Work with databases and cloud platforms
Understand business requirements and convert them into technical solutions
Work directly with stakeholders to develop prototypes and demonstrate solutions
Participate in Agile ceremonies, planning, refinement, and delivery
Review, test, debug, and improve AI-generated code
Ensure applications meet security, performance, accessibility, and maintainability standards
Support CI/CD and production releases
Create reusable AI prompts, specifications, instructions, and development practices
Docker and Kubernetes
Automated testing
Observability and production support
Experience with enterprise-scale applications
Healthcare, insurance, financial services, or other regulated-industry experience
Experience with AI/agentic development frameworks such as Spec Kit, BMAD, or multi-agent workflows
Must be currently located in Minnesota
Must be available for local collaboration when required
Strong communication and stakeholder-facing skills
Ability to work independently and solve ambiguous business problems
Strong combination of Full-Stack Development + AI-assisted development
AI: GitHub Copilot | Claude Code | Codex | ChatGPT
Frontend: React | Angular | JavaScript | TypeScript | HTML | CSS
Backend: Java 17+ | Spring Boot | REST APIs
Database: PostgreSQL | MySQL | Oracle | Cosmos DB
Cloud: AWS | Azure | GCP
DevOps: CI/CD | Docker | Kubernetes | Automated Testing
Methodology: Agile | Scrum | AI-Native Development





