Optum is a global organisation that delivers care, aided by technology to help millions of people live healthier lives. The work you do with our team will directly improve health outcomes by connecting people with the care, pharmacy benefits, data and resources they need to feel their best. Here, you will find a culture guided by diversity and inclusion, talented peers, comprehensive benefits and career development opportunities. Come make an impact on the communities we serve as you help us advance health equity on a global scale. Join us to start Caring. Connecting. Growing together.
In healthcare, evolution doesn’t just happen. It takes innovation, imagination, and a passion for solving problems in new and better ways. And innovation is taking place at a lightning-fast pace every day at Optum.
As the fastest growing part of the UnitedHealth Group family of businesses, we’re expanding our team in Ireland and creating excellent opportunities for those who want greater purpose and more impact in their work. We’ll provide the investment, support, and resources to advance your career. You’ll provide the talent, ambition, and drive.
At UnitedHealth Group and Optum, we want to make healthcare work better for everyone. This depends on hiring the best and brightest. With a thriving ecosystem of investment and innovation, our business in Ireland is constantly growing to support the healthcare needs of the future.
Our teams are at the forefront of building and adapting the latest technologies to propel healthcare forward in a way that better serves everyone. With our hands at work across all aspects of health, we use the most advanced development tools, AI, data science and innovative approaches to make the healthcare system work better for everyone.
We’re seeking an experienced Full Stack Engineer with strong JavaScript/TypeScript skills to build secure, high-performance applications using React, Node.js, and SQL databases. You’ll develop complex UI features (e.g., lazy-loading, virtualization), write robust server-side logic, implement CI/CD processes, ensure quality with testing (Jest, Cypress), and mentor at least one junior team member. Deep familiarity with React and React-based design systems (e.g., Material UI, AG Grid, Bootstrap) is essential, prior experience in an Agile environment is a must, and strong Git skills are required.
Schedule: Full-time position with standard working hours of Monday – Friday, 9am – 5pm.
Location: Optum office in Dublin (Hybrid, 2-3 days per week in office)
Careers with Optum offer flexible work arrangements and individuals who live and work in the Republic of Ireland will have the opportunity to split their monthly work hours between our Dublin office and telecommuting from a home-based office in a hybrid work model.

REQUIRED QUALIFICATIONS:

• Advanced level of knowledge in full stack development, with proficiency in JavaScript/TypeScript and Node.js
• Proficiency in React for building complex UI applications
• Intermediate level of knowledge in at least one SQL database (Postgres, MSSQL, or MySQL)
• Hands-on experience with one or more React-based design systems (Material UI, AG Grid, Bootstrap, etc.)
• Expertise in HTML5, CSS3, and responsive design techniques
• Expertise in building and consuming RESTful APIs and web services
• Familiarity with Docker, CI/CD pipelines, and writing tests (Jest, Cypress)

PREFERRED QUALIFICATIONS:

• Understanding and hands-on use of Git (version control) in a collaborative environment
• Experience working in an Agile environment (Scrum, Kanban, etc.)
• Familiarity with cloud platforms (AWS, Azure, or Google Cloud)
• Experience with SSO, 2FA, RBAC, or SOX compliance
• Contributions to open-source projects or a strong project portfolio

SOFT SKILLS:

• Communication, teamwork, and problem-solving skills

• Develop, maintain, and optimize full-stack web applications (React + Node.js)
• Design and manage database schemas (Postgres, MSSQL, or MySQL) for efficient data storage and retrieval
• Collaborate with UX experts to create responsive, intuitive interfaces using React-based design systems
• Implement containerization (e.g., Docker) and CI/CD pipelines for streamlined deployments
• Write and maintain comprehensive tests (unit: Jest, end-to-end: Cypress)
• Troubleshoot performance bottlenecks, fix bugs, and address feature requests
• Mentor at least one junior developer, fostering best practices in coding and Agile workflows
  You will be rewarded and recognised 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 providing development for other roles you may be interested in.