Senior Software Engineer

Our Client, a Credit Card company, is looking for a Senior Software Engineer for their O'Fallon, MO/Hybrid location.

Responsibilities:

• Building a cloud-native payment orchestration platform that enables cardholders to seamlessly access Client digital services directly through their banking applications via a single, streamlined integration.
• 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.
• 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.
• Note: This role will focus on rapid POCs and prototyping, working closely with engineers from a Mastercard-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.

Requirements:

• Frontend: Angular and/or React
• Backend: Java and/or Golang
• Cloud & Platform: AWS, Kubernetes, and cloud-native technologies

Why Should You Apply?

• Health Benefits
• Referral Program
• Excellent growth and advancement opportunities