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Full Stack Developer

Hackajob

Hackajob

Software Engineering
United States
Posted on Mar 14, 2026
hackajob is collaborating with UnitedHealth Group to connect them with exceptional professionals for this role.

Primary Responsibilities

Develop and maintain server-side and client-side applications using React/Nextjs, TypeScript, Java, Spring Boot, ensuring code quality, efficiency, and adherence to best practices

Design and implement scalable and efficient data structures and algorithms to optimize application performance

Ensure seamless integration of front-end and back-end components to deliver fully functional systems

Collaborate with UI/UX designers to create user-friendly interfaces and ensure a seamless user experience

Design and implement RESTful APIs and microservices architecture to facilitate communication between different components of the system

Utilize design patterns to create modular, reusable, and maintainable code

Collaborate with cross-functional teams to define, design, and deliver new features

Write efficient, testable, and reusable code

Ensure the performance, quality, and responsiveness of applications

Implement security and data protection measures

Proactively identify areas for innovation and optimization

Troubleshoot, debug, and upgrade existing systems

Participate in code reviews to maintain code quality and share knowledge

Stay updated with industry trends and technologies related to Java, React, Spring Boot, CI/CD, Kubernetes, cloud technologies, and microservices

Required Qualifications

2+ years of Proficiency in React and its core principles, including hooks, state management, and component lifecycle

2+ years of Java, Spring Framework, Spring Boot experience

2+ years of proficiency in HTML5, CSS3, TypeScript/JavaScript

2+ years of experience with front-end build tools and package managers

2+ years of experience with RESTful API design and implementation

2+ years of experience with relational databases (e.g., PostgreSQL)

2+ years of experience with unit testing, integration testing, and end-to-end testing frameworks

Experience with containerization technologies such as Docker, Kubernetes

Knowledge of modern authorization mechanisms, such as JSON Web Tokens

Knowledge of security best practices in web development

Understanding of front-end build tools and pipelines

Preferred Qualifications

2+ years of experience with microservices architecture

Experience in messaging and streaming technologies such as Kafka

Experience with Cloud solutions (AWS, Azure, GCP)

Experience with CI/CD pipelines (e.g. Jenkins, GitHub Actions)