Full Stack Senior Engineer (.NET​/React

Join to apply for the Full Stack Senior Engineer (.NET/React) role at Great Gray Trust Company

At Great Gray Group, we strive to set the bar for the retirement services industry. Our goal is to deliver advanced retirement solutions that combine our core fiduciary services with robust investment options, innovative technology, and dedicated client service. We focus on making choices clearer, transitions smoother, and the client experience more delightful. Complacency isn't in our vocabulary. Every day, we look for opportunities to better serve our clients, be an excellent business partner, and earn the trust of those who rely on us.

If you believe in Dev Ops principles, value continuous delivery, and understand that quality is a shared responsibility you will do well here. Our team members are expected to take full ownership of our products as well as embrace efficiency and continuous improvement. We are not looking for a few rock stars, but rather very strong team players that wish to collaborate to create fantastic software.

This is an exciting opportunity to grow alongside Great Gray as we expand, integrate, and build cutting-edge solutions. Your ability to mentor, solve complex technical challenges, and drive results will multiply the effectiveness of your team and shape the future of our technology.

This position will work from our Boston, MA office. Great Gray currently supports a hybrid work model with 4 days onsite, and 1 day remote.

Visa sponsorship or transfer of an existing visa is not available for this position. Applicants must be authorized to work directly for any employer in the United States without visa sponsorship or transfer.

• Develop and enhance scalable, maintainable, cost-effective cloud solutions using .NET Core, ensuring high performance and reliability.
• Collaborate closely with cross-functional teams to translate business requirements into efficient, maintainable, scalable, and high-quality solutions.
• Drive technical excellence through thorough code reviews, identifying opportunities for optimization, and enforcing best practices in code quality, security, and performance.
• Proactively monitor and maintain business-critical platforms and services, ensuring high availability and seamless user experiences.
• Diagnose and resolve complex technical issues, minimizing downtime and continuously improving system efficiency.
• Contribute to innovation by exploring emerging technologies, design patterns, and architectural improvements to keep our solutions cutting-edge.
• A problem‑solving mindset and the ability to contribute to technical discussions.
• Strong collaboration skills, fostering an environment of shared learning and innovation.
• A passion for best practices, design patterns, and driving excellence in development.
• The ability to balance multiple priorities while maintaining high-quality outcomes.
• Complete other related duties as assigned.

• Exhibits our Great Gray values:
  Growth Mindset, Disciplined Curiosity, Grit, Results Ownership, Collaboration.
• 5+ years of software engineering or development experience with 3+ years of experience in a compiled language (ex. .NET, Java).
• Strong experience with RESTful APIs, microservices architecture, and event‑driven systems.
• Strong proficiency in SQL Server, Postgre
  
  SQL, or MySQL.
• Experience with front‑end technologies like Angular, React, or Next.js.

• A solid understanding of software architecture principles and experience implementing design patterns.
• Ability to thrive in a fast‑paced, dynamic environment and manage multiple priorities effectively.
• A growth mindset with an eagerness to learn new technologies and adapt to evolving challenges.
• Comfortable navigating ambiguity.
• Entrepreneurial mindset to bring best practice ideas to the team.
• Hands‑on experience with Azure services and designing scalable, cost‑effective cloud solutions.

Our current tech stack is a blend of existing and next‑gen tools/languages, and like our company itself, our software is always evolving.

• Frontend:
  Angular, React
• Tooling:
  Cypress, Docker, Git Hub, Cursor,…