Senior Full Stack Engineer Jobs in New Jersey

INTRODUCTION

Optum is a global organization 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, and data 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.

Position Summary

Join our engineering team as a Senior Software Engineer and play a vital role in designing, developing, and delivering modern enterprise applications that directly impact millions of lives. In this role, you will be key in building high-scale solutions that support workflow management, integrations, analytics, and AI-enabled capabilities using cloud technologies and enterprise-approved advanced automation to streamline workflows and solve complex business problems.

As a seasoned full-stack engineer, you will leverage your expertise in Java Spring Boot, React, AWS cloud technologies, and modern software engineering practices to contribute across architecture, development, code reviews, technical leadership, and cross-functional collaboration. A critical component of this role involves a strategic modernization initiative where our team is transitioning from a legacy Salesforce-based platform to a cloud-native React and Java architecture. Your familiarity with Salesforce will help bridge business processes and support these migration efforts.

We are looking for a professional, collaborative, and proactive engineer who is excited to apply modern engineering practices, leverage advanced intelligent tools, and work effectively with architects, product owners, business stakeholders, and fellow peers. This is an exciting opportunity to collaborate with talented team members, build robust applications that improve operational efficiency, and drive meaningful technical innovation.

You will enjoy the flexibility to telecommute* from anywhere within the U.S. as you take on some tough challenges.

PRIMARY RESPONSIBILITIES

• Full-Stack Development: Design, develop, test, and maintain scalable, high-performance, and secure enterprise applications using Java Spring Boot, React, and TypeScript
• Modernization & Migration: Play a key role in transitioning legacy platforms (e.g., Salesforce-based architectures) into modern, cloud-native Java and React platforms
• Cloud & DevOps: Design and deploy solutions on AWS using cloud-native patterns, while supporting containerization (Docker, Kubernetes), event-driven systems (Kafka), and automated CI/CD pipelines
• Database & API Integration: Design and optimize relational databases (PostgreSQL) and build secure, highly available RESTful APIs to integrate internal and external systems
• AI & Automation: Design, develop, and deploy AI-enabled platform capabilities and automate complex enterprise workflows using enterprise-approved AI tools to drive efficiency and innovation
• Technical Leadership & Mentorship: Participate in architecture discussions, perform technical code reviews, promote engineering excellence, and mentor junior and mid-level software engineers
• Agile Collaboration: Work proactively in an Agile/Scrum environment, collaborating with architects, product owners, and stakeholders to deliver accurate estimations and robust product features
• Operational Excellence: Troubleshoot, debug, and optimize complex production systems to ensure applications meet strict security, scalability, performance, and high-availability requirements

Design, develop, and deploy AI-powered solutions to address complex business challenges with emphasis on responsible use of AI

You'll be rewarded and recognized for your performance in an environment that will challenge you and give you clear directions on what it takes to succeed in your role as well as provide development for other roles you may be interested in.

REQUIRED QUALIFICATIONS

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or IT related field
• 7+ years of professional software engineering experience
• 7+ years of experience developing enterprise applications using Java (including modern versions such as Java 17/21) and Spring Boot
• 3+ years of experience developing modern web applications using React and TypeScript
• 3+ years of experience designing and consuming RESTful APIs
• 3+ years of experience working with relational databases such as PostgreSQL or similar

PREFERRED QUALIFICATIONS

• Experience with workflow management platforms and enterprise business process automation
• Experience with key AWS services, such as ECS/EKS, Lambda, API Gateway, S3, RDS, CloudWatch, SNS/SQS, and EventBridge
• Experience with containerization technologies (such as Docker and Kubernetes) and event-driven architectures utilizing Apache Kafka
• Experience building AI-enabled or data-driven applications, including familiarity with generative AI concepts, fine-tuning, retrieval-augmented generation (RAG), or prompt design/engineering
• Experience writing scripts or developing applications using Python, especially for AI, machine learning, automation, or data processing initiatives
• Experience working within healthcare, payer, provider, or other regulated industries
• Experience with GitHub, CI/CD pipelines, modern DevOps automation practices, and working in Agile/Scrum environments
• Strong knowledge of software design patterns, object-oriented design, and engineering best practices
• Excellent problem-solving, analytical, troubleshooting, communication, and stakeholder engagement skills
• Experience with Salesforce Platform (Sales Cloud, Service Cloud, Experience Cloud, or custom applications), including participating in Salesforce modernization or migration initiatives
• 2+ years of experience integrating modern automation tools, APIs, or predictive/generative AI models into enterprise applications to optimize workflows or build intelligent software features
• All Telecommuters will be required to adhere to UnitedHealth Group's Telecommuter Policy.

Pay is based on several factors including but not limited to local labor markets, education, work experience, certifications, etc. In addition to your salary, we offer benefits such as, a comprehensive benefits package, incentive and recognition programs, equity stock purchase and 401k contribution (all benefits are subject to eligibility requirements). No matter where or when you begin a career with us, you'll find a far-reaching choice of benefits and incentives. The salary for this role will range from $91,700 to $163,700 annually based on full-time employment. We comply with all minimum wage laws as applicable.

Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

Application Deadline: This will be posted for a minimum of 2 business days or until a sufficient candidate pool has been collected. Job posting may come down early due to volume of applicants.

At UnitedHealth Group, our mission is to help people live healthier lives and make the health system work better for everyone. We believe everyone - of every race, gender, sexuality, age, location, and income - deserves the opportunity to live their healthiest life. Today, however, there are still far too many barriers to good health which are disproportionately experienced by people of color, historically marginalized groups, and those with lower incomes. We are committed to mitigating our impact on the environment and enabling and delivering equitable care that addresses health disparities and improves health outcomes - an enterprise priority reflected in our mission.

UnitedHealth Group is an Equal Employment Opportunity employer under applicable law and qualified applicants will receive consideration for employment without regard to race, national origin, religion, age, color, sex, sexual orientation, gender identity, disability, or protected veteran status, or any other characteristic protected by local, state, or federal laws, rules, or regulations.

UnitedHealth Group is a drug-free workplace. Candidates are required to pass a drug test before beginning employment.