Senior Full Stack Java Developer Jobs in Menasha, WI

Summary

Jewelers Mutual is seeking a highly skilled Senior Software Engineer to lead the technical evolution of our agent-facing web applications. As the technical lead for the Partners squad, you will guide the architecture, design, and development of scalable, modern React applications that simplify how agents manage their customers across insurance and non-insurance products. We are at the very beginning of re-imaging our agent experience, which will include modernizing legacy systems and unifying fragmented workflows, with the Partners squad playing a critical role in building an intuitive, cohesive platform for our agent community. While parts of the existing platform leverage older front-end frameworks, the long-term technical direction is firmly focused on React and modern web technologies. We are looking for a leader with deep expertise in React, experience with driving web modernization efforts, and a passion for building intuitive, reliable B2C and B2B applications.

About Jewelers Mutual
Jewelers Mutual Group has been protecting the jewelry industry for over a hundred years, and we’re now pairing that deep domain expertise with a ground-up technology transformation. Our engineering team in Raleigh is building a serverless, event-driven platform on AWS, a modern data stack on Databricks, and an enterprise AI capability designed to change how insurance works. This is Silicon Valley energy inside a company that’s been earning trust since 1913.
What You'll Do

• Lead new agent experience development: Architect, build, and maintain React-based web applications that deliver seamless, reliable, and scalable experiences for our retail jeweler network.
• Drive Technical Excellence in React: Set the technical direction for modern web development, including state management, performance optimization, secure coding practices, and maintainability.
• Modernize the Platform: Play a key role in evolving the platform from legacy front-end frameworks to React, ensuring a smooth transition and scalable foundation for future innovation.
• Collaborate in a Triad Model: Work closely with a Product Manager and Product Designer to define, build, and deliver a cohesive, intuitive Dashboard experience that meets business and user needs.
• Ensure Scalability and Performance: Design resilient, high-performing web architectures capable of supporting large user bases and complex business operations.
• Integrate with Enterprise Services: Build seamless, reliable functionality by integrating with APIs from our serverless Core Services platform.
• Mentor and Grow Engineering Talent: Provide technical leadership and guidance to engineers, sharing React expertise and fostering modern web development practices.
• Elevate the Agent Experience: Collaborate across multiple squads to deliver unified, streamlined experiences that help agents operate and grow their businesses.

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Minimum Qualifications 

• 5+ years of professional software engineering experience, including:
• Deep expertise in React and modern web application development.
• Experience leading technical modernization or platform evolution efforts.
• Proven track record building and maintaining business-critical B2B web applications, ideally for independent businesses, retail networks, or marketplaces.
• Proficiency in JavaScript, TypeScript, state management libraries, and scalable front-end and backend architectural patterns.
• Strong understanding of UI/UX principles and building intuitive, reliable web applications for business users.
• Experience mentoring engineers, influencing architecture decisions, and leading technical projects.
• Familiarity with Agile development methodologies (Scrum/Kanban).
• Proven experience designing, consuming, and troubleshooting secure, performant RESTful and GraphQL APIs.
  

Preferred Qualifications 

• Familiarity with full system migration efforts (e.g., Angular to React, C# to Node) in a production environment.
• Experience integrating with cloud-native, serverless backends and event-driven architectures.
• Knowledge of CI/CD pipelines, automated testing frameworks, and performance optimization for complex apps.
• Interest in contributing to longer-term product evolution.

What We Offer You

• Community & Giving: Benefit from 50% charitable gift matching and paid volunteer time to support nonprofit causes.
• Great Place to Work® Certified: Join a team recognized for an environment of innovation and growth.
• Collaborative Culture: Work alongside talented, passionate peers who value ownership and continuous learning.
• Competitive Compensation & Benefits: Includes performance bonuses, generous paid time off, and a top-tier retirement program with 401(k) matching and additional company contributions.

Accessibility and Accommodations
We are committed to providing an inclusive and accessible recruitment process. If you require accommodation at any stage of the application or interview process, please let us know by contacting jmrecruiting@jminsure.com.