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Urgent! Lead Fullstack Engineer / St Louis / Java / React / MongoDB Job Opening In St. Louis – Now Hiring Motion Recruitment Partners
Lead Fullstack Engineer / St Louis / Java / React / MongoDB
St. Louis, Missouri
**Hybrid**
Contract
$69.5/hr - $78.31/hr
We are seeking a Lead Fullstack Engineer with strong experience in Java, React, and MongoDB to join a Wealth and Investment Management Technology team modernizing a core financial advisor platform.
This role is part of a major initiative to overhaul a 25+ year-old legacy system, replacing outdated infrastructure with a modern Spring Boot and microservices-based architecture.
The project will streamline account maintenance for financial advisors, reducing legal documentation from 90+ pages to just eight, and significantly 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.
#LI-OP
**You will receive the following benefits:**
+ Medical Insurance - Four medical plans to choose from for you and your family
+ Dental & Orthodontia Benefits
+ Vision Benefits
+ Health Savings Account (HSA)
+ Health and Dependent Care Flexible Spending Accounts
+ Voluntary Life Insurance, Long-Term & Short-Term Disability Insurance
+ Hospital Indemnity Insurance
+ 401(k) including match with pre and post-tax options
+ Paid Sick Time Leave
+ Legal and Identity Protection Plans
+ Pre-tax Commuter Benefit
+ 529 College Saver Plan
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.
**Posted by:** Olivia Policastro
**Specialization:**
+ Javascript
+ Java
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Unlock Your Lead Fullstack Potential: Insight & Career Growth Guide
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Great news! Motion Recruitment Partners is currently hiring and seeking a Lead Fullstack Engineer / St Louis / Java / React / MongoDB to join their team. Feel free to download the job details.
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