Java Full Stack Developer

Date Posted: 10/16/2026
Hiring Organization: Rose International
Position Number: 509321
Industry: Financial Services
Job Title: Java Full Stack Developer
Job Location: O Fallon, MO, USA, 63368
Work Model: Hybrid
Work Model Details: Onsite 3 days per week
Shift: Standard Work Hours (CST)
Employment Type: Temporary
FT/PT: Full-Time
Estimated Duration (In months): 7
Min Hourly Rate($): 80.00
Max Hourly Rate($): 85.00
Must Have Skills/Attributes: Angular, AWS, Java
Experience Desired:
Experience with infrastructure as code using Terraform and/or AWS CloudFormation (6+ yrs),
Experience integrating APIs and troubleshooting distributed applications (6+ yrs)
Preferred Education: Bachelor's Degree
Job Description

• **Only qualified Senior Java Full Stack Developer located near O'Fallon MO to be considered due to the position requiring a hybrid presence. ***

Required Education:
Bachelor's Degree or equivalent experience required

Required Skills, Experience, & Abilities

Frontend: Angular and/or React
Backend: Java and/or Golang
Cloud & Platform: AWS, Kubernetes, and cloud-native technologies
Job Overview:
We are the Priceless Platform Engineering team, building and operating solutions for affluent client cardholders across World, World Elite, and World Legend products. Operating with a startup mindset, the team requires multidisciplinary engineering skills spanning front-end, backend, cloud, platform, and AI-native engineering. We run the global Priceless Platform on AWS across four regions.

The team is primarily responsible for Cloud, Backend, and AI-native Engineering, requiring strong hands-on AWS expertise and backend engineering experience building microservices in Golang and deploying them on Amazon ECS using Fargate on ARM64 architecture. The role also involves integrating mobile SDKs with backend APIs and troubleshooting complex end-to-end integration issues across mobile front ends, backend microservices, AWS ECS, and AgentCore Runtime environments.

AI-native engineering experience with Amazon Bedrock and AgentCore is an important part of the team's evolving technology foundation. The role also involves building a cloud-native payment orchestration platform that enables cardholders to seamlessly access digital services directly through their banking applications via a single, streamlined integration.

Responsibilities

Build scalable, domain driven microservices using Golang and Python FastAPI, integrating backend APIs with mobile SDKs to establish a reliable orchestration layer. Deploy and operate cloud-native services on AWS ECS, Fargate, and ARM64 on AWS Graviton, with hands-on infrastructure provisioning and automation using CloudFormation and Terraform. Build and integrate AI-native capabilities using Amazon Bedrock and AgentCore Runtime, with end-to-end troubleshooting across mobile, backend, cloud infrastructure, and AI runtime layers.

This role will focus on rapid POCs and prototyping, working closely with engineers from an acquired startup and provide broad access to AWS Cloud and AI environments for hands-on experimentation. The engineer is expected to independently build, deploy, run, troubleshoot, and demonstrate end-to-end solutions to internal and external stakeholders.

Benefits

For information and details on employment benefits offered with this position, please visit here. Should you have any questions/concerns, please contact our HR Department via our secure website.

California Pay Equity

For information and details on pay equity laws in California, please visit the State of California Department of Industrial Relations' website here.
Rose International is an

Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex, sexual orientation, gender (expression or identity), national origin, arrest and conviction records, disability, veteran status or any other characteristic protected by law. Positions located in San Francisco and Los Angeles, California will be administered in accordance with their respective Fair Chance Ordinances.

If you need assistance in completing this application, or during any phase of the application, interview, hiring, or employment process, whether due to a disability or otherwise, please contact our HR Department. Rose International has an official agreement (ID #132522), effective June 30, 2008, with the U.S. Department of Homeland Security, U.S. Citizenship and Immigration Services, Employment Verification Program (E-Verify). (Posting required by OCGA 13/10-91.).