Full Stack Developer

Overview A career with us means you’ll work alongside exceptional people and be empowered to reach your professional and personal goals. Our employees are at the foundation of what enables MassMutual to deliver on our purpose to help people secure their futures and protect the ones they love. We embrace the idea that we all are stronger and better through our support for one another. We strive to create a culture where employees feel valued and are celebrated for who they are. Job Description Full Stack Developer Web Application Development Full time, Springfield/Boston The Opportunity This role offers the opportunity to build and evolve the digital platforms that support MassMutual's marketing, customer engagement, advisor experience, and business growth objectives. As a Full Stack Developer, you'll work across the entire application stack, designing and delivering modern, scalable web solutions using technologies such as React, Node.js, AWS, and Kubernetes. You'll own features from concept to production, solving complex technical challenges while ensuring applications are secure, performant, reliable, and maintainable. You'll collaborate closely with product owners, UX designers, architects, and fellow developers to deliver high-quality digital experiences that create measurable business value. This role requires both strong technical expertise and the ability to influence technical direction, lead complex initiatives, and drive engineering best practices. In addition to developing new capabilities, you'll mentor other developers, participate in architecture and code reviews, and help continuously improve our development processes, automation, and delivery pipelines. Within Marketing Technology, you'll have the opportunity to work on a diverse portfolio of high-visibility websites and digital products while gaining exposure to modern cloud architectures, AI-enabled capabilities, personalization, experimentation, analytics, and large-scale platform modernization efforts. This is an ideal opportunity for a developer who enjoys learning emerging technologies, taking ownership of meaningful work, and helping shape the future of MassMutual's digital ecosystem. The Team You'll join a collaborative, globally distributed team of developers based in Springfield, Boston, and India who are passionate about building exceptional digital experiences and supporting one another's success. We foster a culture of ownership, continuous learning, knowledge sharing, and open communication, where team members are encouraged to contribute ideas, challenge assumptions, and help drive technical innovation. The team works closely with product owners, UX and design partners, architects, marketing stakeholders, analytics teams, and risk and compliance partners to deliver secure, high-quality digital solutions that create meaningful business and customer impact. The Impact 1. Design, develop, and maintain modern web applications Build and enhance scalable, responsive web applications that directly power potential customer- and advisor-facing digital experiences. 2. Lead the delivery of complex technical features and solutions Own the technical implementation of features from design through deployment, collaborating with product, design, and architecture teams to deliver high-quality solutions that ensure alignment with business goals and technical standards. 3. Ensure application performance, reliability, and quality Monitor, troubleshoot, and optimize applications by identifying performance bottlenecks, resolving defects, and implementing observability and monitoring solutions to help maintain a secure, reliable, and seamless experience for potential customers. 4. Champion engineering best practices and continuous delivery Participate in architecture reviews, code reviews, automated testing, and CI/CD processes to improve software quality and deployment efficiency to help the team deliver features faster, more consistently, and with greater confidence. 5. Mentor and support other developers Provide technical guidance, coaching, and knowledge sharing to team members, help developers solve problems, estimate work, and grow their skills to grow a culture of continuous learning and collaboration. 6. Collaborate across business and technology teams Partner closely with product owners, UX designers, architects, marketing stakeholders, analytics teams, and risk and compliance partners to define solutions that meet customer and business needs to ensure we deliver secure, accessible, and impactful digital experiences that drive measurable value for the organization. The Minimum Qualifications (Required) Bachelor’s degree in computer engineering, computer science, information systems, or a similar technical field. 5+ years of software engineering/development experience. 4+ years working on modern front-end JavaScript frameworks. 2+ years working in a mature agile environment. 1+ years working with AI technologies like Claude or Copilot. The Ideal Qualifications (Preferred) Strong understanding of modern web application architecture, including scalability, performance optimization, security, observability, and maintainability. Experience designing and implementing cloud-native solutions, including containerized applications, microservices, and distributed systems. Proficiency in modern content management systems. Knowledge of modern software engineering practices such as CI/CD, automated testing, infrastructure as code, and DevSecOps principles. Experience integrating and optimizing APIs, monitoring platforms, analytics tools, and other third-party services within enterprise applications. Ability to troubleshoot complex production issues, identify root causes, and implement sustainable solutions that improve application reliability and user experience. Experience evaluating and adopting emerging technologies, frameworks, and development tools to improve team productivity and platform capabilities. Experience working with relational and document-based database systems. Strong collaboration and communication skills, with the ability to work effectively across technical teams and business partners to achieve shared outcomes. Ability to mentor and support other developers through technical leadership, knowledge sharing, and constructive feedback while contributing to a culture of continuous learning and accountability. What You Can Expect at MassMutual MassMutual offers the opportunity to do meaningful work within a purpose-driven organization that values long-term impact over short-term outcomes. In this role, you can expect: Clear areas of ownership and accountability, with work that connects directly to company and customer outcomes A collaborative environment where perspectives are welcomed Access to learning, development, and internal networks that support continuous growth and skill-building over time Employee-led communities and forums that foster connection, learning, and inclusion across the organization A culture grounded in integrity, responsibility, and stewardship—supported by a company with a strong legacy and a future-focused mindset #LI-RK1 MassMutual is an equal employment opportunity employer. We welcome all persons to apply. If you need an accommodation to complete the application process, please contact us and share the specifics of the assistance you need. California residents: For detailed information about your rights under the California Consumer Privacy Act (CCPA), please visit our California Consumer Privacy Act Disclosures page. MassMutual will accept applications on an ongoing basis until such time as a candidate has been offered employment. The job description includes the main duties of this position, which may evolve over time. You may be required to perform other duties not listed. It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. Salary Range: $128,000-$168,000 Award-Winning Culture MassMutual is guided by a single purpose: We help people secure their future and protect the ones they love. As a company operated for the benefit of our members and participating policyowners, we are defined by mutuality and our vision to provide financial well-being for all Americans. It’s more than our company structure — it’s our way of life. We are a company of people protecting people. Our company exists because people are willing to share risk and resources and rely on each other when it counts. We strive to build a thriving community where everyone is valued, included, and feels that they belong. At MassMutual, we Live Mutual. How We Work MassMutual’s flexible workplace approach combines the importance of connecting in person and the flexibility of working remotely. Our hybrid model puts collaboration first with employees coming in at least three days per week to our spectacular campus settings and also enjoying the flexibility of remote Fridays, company-wide remote weeks, and a bank of flexible remote weeks to use throughout the year. Benefits for the whole you (and your loved ones) There’s more to your life than your job and there’s more to your aspirations than a paycheck. We take a holistic view of compensation and benefits that provides the flexibility to create a healthy balance in your life for work, family, and community. We offer the benefits you’d expect, like medical, dental, 401(k), and generous vacation time, but we also offer ones you might not expect, like three paid days for volunteering, a $1,250 annual Well-Being Wallet, and up to 320 hours of caregiver leave. Explore some of our offerings below. Paid Time Off In addition to generous vacation time, paid holidays, and flexible holidays, MassMutual offers 'take care' time to care for yourself or someone you love—whether for physical illness or mental health. Health & Well-Being In addition to top-line medical and dental coverage, personalized mental health solutions, on-site and virtual health coaching, and much more, MassMutual reimburses employees up to $1,250 per year for eligible expenses supporting mental, physical, and financial well-being. Financial Well-Being In addition to competitive salaries and bonuses, educational assistance programs, and much more, MassMutual offers up to a 10% total 401(k) benefit, consisting of a 5% company match and a 5% annual contribution. Taking Care MassMutual offers generous maternity and parental leaves, as well as bereavement leave to mourn the loss of a loved one (and the employee defines 'loved one'). In addition, we offer up to 320 hours of caregiver leave to help employees support loved ones in times of need. Giving Back MassMutual offers three paid days for employees to volunteer with eligible nonprofits of their choice, and the MassMutual Foundation matches employee donation dollars to eligible nonprofit organizations up to $5,000 annually. Commuter Benefits MassMutual offers a Qualified Commuter Program through which eligible employees can pay qualified workplace commuting expenses with before-tax dollars, as well as a commuter wallet option for employees based at Boston and NYC campuses.