Lead Fullstack Engineer / St Louis / Java / React / Mongodb

Lead Fullstack Engineer

We are looking for a Lead Fullstack Engineer with strong experience in Java, React, and MongoDB to join a Wealth and Investment Management Technology team. This role is part of a major initiative to modernize a core financial advisor platform. The project will streamline account maintenance for financial advisors, reducing legal documentation and improving workflow efficiency. If you're excited about building scalable applications, working across both frontend and backend (50/50 split), and leading efforts to modernize mission-critical platforms, this is an opportunity to make a large-scale impact. You'll join a highly collaborative engineering team working in agile ceremonies while spending the majority of time hands-on coding.

Required Skills & Experience:

• 7+ years of professional software engineering experience
• Strong expertise with Java Spring Boot for backend development
• Proficiency with React for frontend development
• Experience working with MongoDB or other NoSQL databases
• Fullstack development background with a balance of frontend and backend work
• Ability to write clean, maintainable, well-tested code in a collaborative environment
• Experience working in agile teams (stand-ups, retrospectives, sprint planning)

Desired Skills & Experience:

• Familiarity with SQL (Oracle or SQL Server) for cross-team interaction
• Experience modernizing or rebuilding legacy platforms
• Background in microservices-based architecture
• Experience gathering requirements and collaborating with stakeholders across engineering, product, compliance, or risk
• Leadership experience (mentoring junior engineers, defining technical approaches, guiding design decisions)
• Strong problem-solving skills and ability to identify work independently

What You Will Be Doing:

• Designing and maintaining backend services in Go
• Leading development of fullstack features with Java Spring Boot and React
• Collaborating with financial advisors, engineers, legal, compliance, and risk teams to define requirements
• Supporting modernization of a legacy financial advisor platform into a microservices-based application
• Designing and maintaining backend services, APIs, and data integrations with MongoDB
• Building user-friendly frontends to simplify workflows and improve efficiency
• Participating in agile ceremonies while dedicating ~90% of time to coding
• Contributing to long-term architectural decisions and system scalability

The Offer:

You will receive the following benefits:

• Competitive compensation package
• Medical, Dental and Vision Insurance
• Hybrid work flexibility with location preference for St. Louis or Charlotte
• Opportunity to lead within a smaller engineering pod (4–7 engineers) while part of a larger 17-person group
• Exposure to greenfield modernization work on a high-impact platform

Applicants must be authorized to work in the U.S. on a full-time basis now and in the future. Motion Recruitment Partners (MRP) is an Equal Opportunity Employer. All applicants must be currently authorized to work on a full-time basis in the country for which they are applying, and no sponsorship is currently available. Employment is subject to the successful completion of a pre-employment screening. Accommodation will be provided in all parts of the hiring process as required under MRP's Employment Accommodation policy. Applicants need to make their needs known in advance.